text:
2012 was a really weird year in sports, but there were a few things worthy of mentioning, both good and bad. Here goes:
Worst collapse of a supposedly good team: (Tie) Southern Cal's 2012 football team that was tabbed pre-season number one, only to finish the season outside the top 25. And the New York Yankees anemic offensive performance in the Major League Baseball post-season.
Best performance of a supposedly washed-up NFL quarterback: Peyton Manning of the Denver Broncos. Peyton missed the entire 2011 season after four separate neck surgeries, was released by the Indianapolis Colts, signed as a free agent by the Broncos, and the rest they say is history. He should be a lock for an unprecedented fifth NFL Most Valuable Player Award.
Worst college coaching performance of 2012 by a head coach: Derek Dooley of Tennessee.
Worst college coaching performance by an assistant coach: Sal Sunseri, Dooley's Defensive Coordinator at Tennessee.
Worst handling of a legendary coach stepping down: Tennessee's debacle of Lady Vols' Coach Pat Summitt's resignation. Regardless of what actually happened, the fact that there were too many differing stories made U.T. look really bad.
Best possible two-team match up for the BCS National Championship: Alabama versus Notre Dame. College football's two most storied programs meeting for the title is almost too good to be true.
Best news for college football teams who still like to play defense: Alabama and Notre Dame are meeting for the National Championship.
Best possible news about a playoff to determine a BCS Champion: In 2014, four teams will be selected to play for the national title.
Worst possible news about a playoff to determine a BCS Champion: We still must wait until 2014 to see it.
Best win for the UTC Lady Mocs' basketball program: The season opening win over the Tennessee Lady Vols. Needless to say it's also the biggest win in the program's storied history.
Worst news regarding scheduling for women's college softball: Still no meeting between UTC and the Tennessee Lady Vols. This really should be corrected. Fast pitch softball in our area needs a big boost and an annual meeting or two between these two schools would provide it.
Worst Major League Baseball Playoff change: The early wild-card playoff round is a one game, winner goes on and loser goes home. Every round should at least be a best two out of three situation. (How about two out of three, then three out of five, then four out of seven?) You don't play 162 regular season games just to make the playoffs and play a one and done scenario. Just ask the Atlanta Braves.)
Worst ending to a once admired athlete's career: Lance Armstrong's fall from grace following the release of his full involvement in doping and illegal steroid use while participating in the Tour De France.
Best "Local Sports Story" of 2012: UTC's Steven Fox winning the 2012 U.S. Amateur Golf Title.
Best "Making the best out your current situation" performance of 2012: New Tennessee Head Football Coach Butch Jones, while appearing to be the Vols' fourth choice behind Jon Gruden, Charlie Strong and Kevin Gundy, has said all the right things so far as he tries to bring together the Vols disheveled fan base. (Actually he may be as good as any one of those above mentioned, including Gruden, who never really considered the job anyway.)
Best wishes for 2013: Mine to all of you! Happy New Year!
Randy Smith has been covering sports in Tennessee for the last 43 years. After leaving WRCB-TV in 2009, he has continued his broadcasting career as a free-lance play-by-play announcer. He is also an author and is a media concepts teacher at Brainerd High School in Chattanooga. He is also the Head Softball Coach at Brainerd. Randy Smith's career has included a 17-year stint as scoreboard host and pre-game talk show host on the widely regarded "Vol Network". He has also done play by play of more than 500 college football, basketball, baseball and softball games on ESPN, ESPN2, Fox Sports, CSS and Tennessee Pay Per View telecasts. He was selected as "Tennessee's Best Sports Talk Show Host" in 1998 by the Associated Press. He has won other major awards including, "Best Sports Story" in Tennessee and his "Friday Night Football" shows on WRCB-TV twice won "Best Sports Talk Show In Tennessee" awards. He has also been the host of "Inside Lee University Basketball" on CSS for the past 11 years. He was the first television broadcaster to ever be elected to the "Greater Chattanooga Area Sports Hall of Fame", in 2003. Randy and his wife, Shelia, reside in Hixson. They have two married children (Christi and Chris Perry; Davey and Alison Smith). They also have three grandchildren (Coleman, Boone, and DellaMae).
July 28, 2016
July 27, 2016
Homeruns by Edgar Corcino and Mitch Garver helped lead the Lookouts over the Tennessee Smokies by a score of 8-4. Tennessee jumped out to an early 3-1 lead against Lookouts starting pitcher ... (click for more)
Ben Wolcott shot 69 Wednesday and won the Choo Choo Invitational men's golf tournament at Council Fire. Wolcott finished one shot ahead of Michael Nagy. Wes Gosselin finished five shots ... (click for more)
The University of Tennessee at Chattanooga put a league-high 10 student-athletes on the preseason All-Southern Conference Football Team, picked by the league coaches and released as part of SoCon ... (click for more)
Homeruns by Edgar Corcino and Mitch Garver helped lead the Lookouts over the Tennessee Smokies by a score of 8-4. Tennessee jumped out to an early 3-1 lead against Lookouts starting pitcher Kohl Stewart. Though his ERA went up a little bit to 3.38, Stewart improved to 5-4 on the season. The right-hander gave up three runs (two earned) on seven hits over five innings. He ... (click for more)
Ben Wolcott shot 69 Wednesday and won the Choo Choo Invitational men's golf tournament at Council Fire. Wolcott finished one shot ahead of Michael Nagy. Wes Gosselin finished five shots back. Wolcott entered Wednesday's final round with a five-shot lead. He made a birdie on No. 18 to seal the win. Chattanooga Choo Choo Invitational Tournament Council Fire ... (click for more)
Fire destroyed a vacant house in the Valleybrook Community early Thursday morning. The Chattanooga Fire Department received the alarm at 5:35 a.m. and responded to a reported fire at the Valleybrook Golf and Country Club off Hixson Pike. When the first firefighters from Station 19 arrived on the scene, they could not find the fire. Lt. Scott Sheets with Quint 19 said that ... (click for more)
The Chattanooga Whiskey Company has begun construction on a larger production distillery in the former Newton Chevrolet property at the corner of MLK Boulevard and Riverfront Parkway near the Tennessee River. Once fully operational, the Riverfront Parkway facility will be capable of producing upwards of 14 (53-gallon) barrels per day, making it one of the largest craft bourbon ... (click for more)
We are blessed to have freedom of speech in our society, but I am always amazed at the number of folks who voice such strong antagonistic opinions about things without any apparent first-hand knowledge. As any who wish to criticize the system should know, people get arrested and charged for criminal offenses every day. The ultimate charge and penalty which results ... (click for more)
After studying the Hamilton County School Board quite harshly during the last seven most-tumultuous months in its history, it is only proper that I share my belief that Rhonda is its Most Valuable Player. Four of the school board's nine members are up for re-election, with Rhonda facing capable opponents in Jason Moses and Dr. Patti Skates in District 1, but let's never forget that ... (click for more)


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text:
Global Positioning Systems, Inertial Navigation, and Integration / Edition 1by Mohinder S. Grewal, Lawrence R. Weill, Angus P. Andrews
Pub. Date: 01/28/2001
Publisher: Wiley
Written by recognized authorities in the field, this book provides engineers, computer scientists, and others with a working familiarity with the theory and contemporary applications of Global Positioning Systems (GPS), Inertial Navigational Systems, and Kalman
The only comprehensive guide to Kalman filtering and its applications to real-world GPS/INS problems
Written by recognized authorities in the field, this book provides engineers, computer scientists, and others with a working familiarity with the theory and contemporary applications of Global Positioning Systems (GPS), Inertial Navigational Systems, and Kalman filters. Throughout, the focus is on solving real-world problems, with an emphasis on the effective use of state-of-the-art integration techniques for those systems, especially the application of Kalman filtering. To that end, the authors explore the various subtleties, common failures, and inherent limitations of the theory as it applies to real-world situations, and provide numerous detailed application examples and practice problems, including GPS-aided INS, modeling of gyros and accelerometers, and WAAS and LAAS.
Drawing upon their many years of experience with GPS, INS, and the Kalman filter, the authors present numerous design and implementation techniques not found in other professional references, including original techniques for:
* Representing the problem in a mathematical model
* Analyzing the performance of the GPS sensor as a function of model parameters
* Implementing the mechanization equations in numerically stable algorithms
* Assessing computation requirements
* Testing the validity of results
* Monitoring GPS, INS, and Kalman filter performance in operation
In order to enhance comprehension of the subjects covered, the authors have included software in MATLAB, demonstrating the workings of the GPS, INS, and filter algorithms. In addition to showing the Kalman filter in action, the software also demonstrates various practical aspects of finite word length arithmetic and the need for alternative algorithms to preserve result accuracy.
An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.
Product Details
- 9780471350323
- Publisher:
- Wiley
- Publication date:
- 01/28/2001
- Edition description:
- Older Edition
- Pages:
- 416
- Product dimensions:
- 6.54(w) x 9.61(h) x 1.08(d)
Table of Contents
Fundamentals of Satellite and Inertial Navigation.
Signal Characteristics and Information Extraction.
Receiver and Antenna Design.
GPS Data Errors.
Inertial Navigation.
Kalman Filter Basics.
Kalman Filter Engineering.
Differential GPS.
Appendix A: Software.
Appendix B: Vectors and Matrices.
Appendix C: Coordinate Transformations.
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text:
|Publication number
|Publication type
|Application number
|Publication date
|Mar 22, 1983
|Filing date
|Aug 17, 1981
|Priority date
|Aug 17, 1981
|Fee status
|Publication number
|Eric A. Udren
|Original Assignee
|Electric Power Research Institute, Inc.
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (5), Referenced by (23), Classifications (10), Legal Events (7)
|External Links: USPTO, USPTO Assignment, Espacenet
1. Field of the Invention
The invention relates in general to the protection of electrical reactors, and more specifically to the detection of shorted turns in an electrical reactor.
2. Description of the Prior Art
An EHV transmission line produces certain VAR requirements upon the two end systems. These requirements increase as the square of the voltage, and they are a function of the line capacitance and length. If the systems are unable to absorb the VARs with inductive loads or underexcited machines, terminal voltages may rise excessively under light load conditions. A common arrangement for absorbing these VARs is by the use of shunt reactors located near the ends of the EHV line sections. Shunt compensation may be in the form of electrical reactors connected directly to the line being compensated, to the tertiary windings of the step-up or step-down transformers at the terminals of the line, or on the lower voltage bus to which the transformers are connected.
Shunt reactors are conventionally protected in the prior art by a variety of complementary and/or overlapping protective relay functions, including overcurrent, differential, and impedance relays. Overcurrent relays respond to all types of faults, but they have limited sensitivity. Differential relays are very sensitive to winding-to-ground faults, but they do not respond to turn-to-turn faults. Impedance relays, looking into the reactor from the line side, can detect a drop in impedance caused by a turn-to-turn fault, as long as enough turns are shorted. In other words, the impedance relay must be set such that it will not trip the associated circuit breaker, or breakers, for the minimum normal impedance of the reactor. The normal impedance of a reactor varies significantly with heating and voltage. Thus, a turn-to-turn fault which does not drop the reactor impedance below the lower end of the normal impedance range will go undetected. It would thus be desirable to be able to supplement these conventional forms of reactor protection with a protective function which is sensitive to turn-to-turn faults, even when the shorted turns do not drop the impedance below the lower end of the normal impedance range of the protected reactor.
Briefly, the present invention includes methods of, and apparatus for, detecting shorted turns in an electrical reactor, which methods and apparatus are applicable to any of the shunt reactor protection arrangements, as long as the voltage across, and the current through, the reactor can be measured. In addition to conventional reactor protection arrangements, the rate of change of the reactor impedance is monitored, and it is compared with a predetermined setting. A sudden drop in apparent impedance which exceeds the setting, i.e., the rate of change exceeds a predetermined magnitude, causes a signal to be provided which may be used to trip the local circuit breaker, and to provide a direct transfer trip signal for a remote circuit breaker at the other end of the line section.
When protecting an iron core reactor, the invention also specifically monitors the voltage applied to the reactor. A sudden voltage increase, such as may be caused by external fault clearing, or a switching operation, temporarily modifies the "reach" of the relay's tripping characteristic, to suppress operation due to a drop in apparent impedance caused by a voltage jump, but not for faults. This less sensitive impedance change detection characteristic persists for only about one power cycle, and then the normal boundary of the characteristic is restored. In a preferred embodiment of the invention, this dynamic characteristic or boundary shift is proportional to the magnitude of the voltage increase.
The impedance change detection is disabled upon energization of the reactor for about one power cycle, in order to establish an impedance value required to start the comparison or rate-of-change detection. Auxiliary protection is provided, though not as sensitively, as in addition to the impedance change detection, the invention also compares each impedance determination of the reactor with a fixed impedance characteristic.
The invention also detects when the transmission line is deenergized, to prevent the impedance change detection from generating trip signals due to ring-down of the line.
The invention may be better understood, and further advantages and uses thereof more readily apparent, when considered in view of the following detailed description of exemplary embodiments, taken with the accompanying drawings in which:
FIG. 1 is a schematic diagram of protective relay apparatus for protecting a shunt reactor according to the teachings of the invention, including very sensitive detection of shorted turns;
FIG. 2 illustrates a sinusoidal waveform and exemplary sampling intervals which may be used to obtain voltage and current samples used in the determination of reactor impedance;
FIG. 3 is a graph which illustrates how a clock sequencer shown in FIG. 1 controls the transfer of the voltage and current samples in the protective relay apparatus shown in FIG. 1;
FIGS. 4A, 4B, and 4C may be assembled to provide a detailed program and logic for directing the operation of the protective relay apparatus shown in FIG. 1 according to the teachings and methods of the invention;
FIG. 5 is a RAM map which illustrates a suitable format for certain of the monitored data, and information developed by the program shown in FIGS. 4A, 4B, and 4C;
FIG. 6 is a ROM map which illustrates suitable formats for various look-up tables used by the program shown in FIGS. 4A, 4B, and 4C;
FIG. 7 is a R-X diagram which illustrates an exemplary operating characteristic of an impedance relaying function of the invention; and
FIG. 8 is an impedance change diagram which illustrates an exemplary operating characteristic of the impedance change relaying function of the invention.
The present invention relates to new and improved protective relaying methods and apparatus for protecting large shunt electrical reactors of the type used by electrical utilities to provide VAR compensation on EHV transmission lines. In general, the new method includes the steps of providing voltage and current signals representative of the voltage across, and the current through, the reactor to be protected, and determining the apparent impedance of the reactor by using the voltage and current signals. The rate of change of the apparent impedance is then determined and monitored. A percent sudden drop of apparent impedance, which change exceeds a predetermined setting, indicates a turn-to-turn fault.
FIG. 1 is a schematic diagram of new and improved protective relay apparatus 10 which embodies a preferred implementation of this method, wherein the voltage and current signals are provided at a predetermined sampling rate. Impedance determinations may be made by using these samples, with the impedance determinations being made at the same rate as the sampling rate, or at some predetermined lesser rate. In any event, the impedance determinations are made at a predetermined rate, and each determination is compared with a predetermined prior impedance determination, to determine the rate of change. Since the time between the latest determination and the earlier determination it is compared with will always be the same, the rate of change of impedance can be monitored and compared with a boundary value simply by comparing each difference value in apparent impedance with a predetermined value selected to reflect the maximum allowable rate of change.
Protective relay apparatus 10 is associated with a three-phase electrical power transmission line 12, with VAR compensation being provided for the line by shunt reactors. For purposes of describing the invention, it is sufficient to illustrate a single shunt reactor 14 connected to one of the three phases near the local end of the transmission line. It will be understood that similar reactors would also be connected to the other phases, and that reactors may also be connected at other points of the transmission line, such as near the remote end of the transmission line 12. While shunt reactor 14 is illustrated as being connected directly to the high voltage (HV), or extra high voltage (EHV) line 12, it is to be understood that the invention is equally applicable to protecting tertiary connected reactors, and reactors which are connected to the lower voltage buses. The local end of transmission line 12 is connected to a three-phase bus 16 via three single-phase circuit breakers, or a single three-phase circuit breaker, with the circuit breakers being shown generally at 18. The remote end of transmission line 12 is connected to a three-phase bus 20 via a circuit breaker 22. A source of alternating three-phase electrical potential, usually having a power frequency of 50 or 60 Hz, is connected to at least one of the buses 16 or 20.
It is important to provide information relative to the voltage across, and the current through, reactor 14, measured from the line side. A capacitive type voltage divider 24, a potential transformer 26, and an isolating potential transformer 28, may be used to provide an analog signal V1 proportional to the voltage applied to reactor 14. A current transformer 30 connected to measure the current flowing between reactor 14 and the line, an isolating current transformer 32, and a resistor 34, are connected to provide a signal I1, in voltage form, proportional to the reactor current.
In the preferred embodiment of the invention, the impedance calculations are made with the aid of a digital computer 35, such as a microprocessor, and the logic of the invention is also conveniently implemented by the same digital computer. Thus, the analog voltage and current signals V1 and I1 are converted to digital form for use by the digital computer. However, it is to be understood that the invention may also performed by dedicated solid state circuits.
The voltage and current signals V1 and I1 may be converted to digital form by any suitable process. For example, after the voltage and current signals V1 and I1 are passed through low pass, anti-aliasing filters 36 and 38, respectively, they are applied to sample and hold circuits 40 and 42, respectively. The filter outputs are sampled and held at a predetermined rate, such as 12 or 16 times per power frequency cycle. For purposes of example, the 12 samples per cycle will be assumed, with the waveforms being sampled every 30 degrees. FIG. 2 illustrates a sinusoidal waveform 44 and twelve uniformly spaced sampling points referenced f0 through f11. While the Figure illustrates the samples in-phase with the waveform, i.e., starting at a zero point, in practice no attempt is made, or required, to synchronize the sampling with the waveform it is sampling.
A clock 46, also called a sequencer, provides the signals for operating the sample and hold circuits 40 and 42, as well as the signals for further processing of the sampled and held signals. FIG. 3 is an exemplary timing diagram which illustrates the sequencing of the various functions. FIG. 3 illustrates the sample and hold functions simultaneously sampling and holding the voltage and current waveforms of all three phases, to make it clear that the samples being processed are taken simultaneously, and that there is adequate time between samples to process the signals from all three phases.
Since analog to digital converters are relatively costly, the analog voltage and current samples may be multiplexed through a single A/D converter 48 via an analog multiplexer 50. The output of the A/D converter stores each of the voltage and current samples in digital form in a search pad memory 52. Thus, as shown in FIG. 3, the sequencer 46, after providing signals for the sample and hold functions, provides a signal for the analog multiplexer which connects the output of one of the sample and hold functions to the input of the A/D converter 48. The sequencer then provides a signal for the A/D converter to perform the conversion, and a signal from the sequencer 46 stores the digitized value at the next empty location in memory 52. The multiplexing, the A/D converting, and storing signals are repeated until all sampled and held values are stored in memory 52.
Computer 35 includes a central processing unit or CPU 54, an input port 56, an output port 58, a read-only memory or ROM 60, and a random access memory or RAM 62.
After all of the sampled and held values of the present sampling period are stored in memory 52, the sequencer 46 provides an interrupt signal for the input port 56 of computer 35. The input port 56 reads the first memory word and stores it in RAM 62, and it then provides a signal for memory 52 to put the next binary word on its output bus, etc., until all of the memory words have been transferred into RAM 62. Sequencer 46 repeats the process every 1.389 ms to provide the 12 samples per 60 Hz power cycle selected for purposes of example. Instead of using interrupts as the mode for transferring the data, other techniques, such as polling, or direct memory access (dma), may be used.
FIGS. 4A, 4B, and 4C may be assembled to provide a detailed flow chart which may be used to write a program for the digital computer 35 to implement the teachings of the invention. The program is entered at 64 and step 66 initializes the system, such as by clearing certain memories, clearing flags, etc. The program may then serve other tasks, as indicated by step 67. When samples are ready for transfer, an interrupt is provided by sequencer 46 and the computer 35 goes into an interrupt service program, indicated by step 69. This program stops performing the other task and stores its status, to enable an orderly return thereto. Step 70 then reads the input port 56 and stores the word in RAM 62. Step 71 checks to see if all of the memory words stored in memory 52 have been transferred. If not, the program loops through steps 70 and 71 until the memory has been emptied. FIG. 5 is a RAM map which illustrates a suitable format for storing the voltage and current samples of one of the phases.
The invention utilizes an algorithm for determining the apparent impedance of the reactor from the voltage and current samples. Any suitable algorithm may be used, and, as such, forms no part of the present invention. In order to provide secure, unambiguous results, a long window, i.e., full cycle, algorithm is preferred, such as the full cycle Fourier of Walsh algorithms. For purposes of example, the full cycle Fourier algorithms disclosed by G. R. Slemon et al. in a paper entitled "High Speed Protection Of Power Systems Based On Improved Power System Models", CIGRE 31-09, 1968, will be used. For easier computation, the polar form disclosed in this paper may be converted to rectangular form, with the equations for the resistance r and reactance XL in rectangular form being as follows: ##EQU1##
The b1 and a1 quantities for the voltage and current in equations (1) and (2) are determined from equations (8) of the hereinbefore mentioned paper, as follows: ##EQU2##
In the above equations, x is the sampling interval in radians, n is equal to 2π/x, and f0, f1 . . . fn are the amplitudes of the voltage and current waveforms at the sampling instants, which are stored in RAM 62, as hereinbefore described. The sin and cos elements are constants, and need not be calculated. For example, as shown in FIG. 6, which is a ROM map of ROM 60, these constants may be stored in a look-up table, referenced Look-Up Table I.
The sampling interval chosen for purposes of example is 360�/12 or 30 degrees, which is π/6 radians. Thus, x is equal to π/6.
In the above equations, n, which is equal to 2π/x, is thus equal to 12. Sin x, which is sin 30�, is equal to 0.5. Sin 2x, which is sin 60� is equal to 0.866, etc. Cos x, which is cos 30�, is equal to 0.866, cos 2x, which is cos 60�, is equal to 0.5, etc. The sin and cos constants for each multiple of 30� through 360� would be stored in Look-Up Table I.
Thus, in order to determine R and XL, twelve voltage and current samples are required, which are obtained during one power cycle. Step 72 checks to see if one complete cycle of samples have been stored. If not, the program returns to step 67. When step 72 finds that all 12 samples f0 through f11 have been collected, the program advances from step 72 to step 74. Step 74 starts algorithm (4), using the voltage samples f0 -f11 stored in RAM 62, as shown in FIG. 5.
Step 74 determines the first element 2f1 sin x of equation (4), looking up the value for sin x (sin 30�) in Look-Up Table I, and multiplying this value (0.5) by the value of the voltage sample f1, and it then multiplies the resulting product by two. The result is stored at a temporary location in RAM 62, referenced TEMLO 1, as illustrated in the RAM map of FIG. 5.
Step 76 looks up sin 2x (sin 60) and multiplies this value (0.866) by the voltage sample f2, and the resulting product is then multiplied by two. The result is added to the value stored at TEMLO 1. Steps 78, 80, 82, 84, 86, 88, 90 and 92 each determine another quantity of equation (4), with each step adding the result to the contents of location TEMLO 1. Step 94 then multiplies the contents of TEMLO 1 by x/2π (1/12). Step 94 stores the result, which is Vb1 at a location in RAM 62 referenced STORE 1. This location is set forth in the RAM map of FIG. 5.
In like manner, Va1 is determined using equation (3), and the voltage samples f0 -f11. Steps 98 through 124 set forth the required operations in detail, following equation (3) just as equation (4) was followed by steps 74 through 96. Step 124 stores Va1 at location STORE 2, which is shown in the RAM map of FIG. 5.
Step 126 then determines Ib1 by using equation (4) and the samples f0 -f11 of the current samples, which are stored in RAM 62. Thus, step 126 is performed using steps similar to steps 74 through 94, and these steps need not be repeated in detail. Step 128 then stores Ib1 at location STORE 3 of RAM 62.
Step 130 then determines Ia1 by using equation (3) and the samples f0 -f11 responsive to the reactor current, which are stored in RAM 62. Step 130 is then performed using steps similar to steps 98 through 122, and thus these steps need not be repeated in detail. Step 132 stores Ia1 at location STORE 4.
At this point of the program Vb1, Va1, Ib1 and Ia1 have been determined and stored for future use. The program then determines the apparent resistance R of the reactor 14 using equation (1). Step 134 multiplies Vb1 by Ib1 and stores the product at TEMLO 1. Step 136 multiples Va1 by Ia1 and adds the product to the contents of location TEMLO 1. Step 138 squares Ib1 and stores the result at TEMLO 2. Step 140 squares Ia1 and adds the result to the contents of location TEMLO 2. Step 142 divides the contents of TEMLO 1 by the contents of TEMLO 2, to determine the apparent resistance R. Step 144 stores the value representative of R in RAM 62, as shown in FIG. 5.
Steps 146 through 154 now determine XL, using equation (2), with step 146 multiplying Va1 by Vb1, and storing the product at TEMLO 1. Step 148 multiplies Vb1 by Ia1 and subtracts the result from the contents of TEMLO 1. Step 150 squares Ib1 and stores the result at TEMLO 2. Step 152 squares Ia1 and adds the result to the contents of location TEMLO 2. Step 154 divides the contents of TEMLO 1 by the contents of TEMLO 2, to produce XL. Step 156 stores XL in RAM 62, as shown in FIG. 5.
Now that the rectangular coordinates for the apparent impedance of the reactor have been determined, a first protective function may be performed, which function involves a fixed reach comparison. This protective function is not as sensitive as a later protective function which will be performed, but it will detect all faults except those turn-to-turn faults which short too few turns to drop the apparent impedance of the reactor into a range outside the normal impedance range of the reactor.
FIG. 7 is a R-X diagram illustrating a suitable characteristic for making an impedance decision relative to a shunt reactor. If the point described by R, XL falls within the trip zone, it indicates that the impedance of the reactor is below a predetermined minimum value, and the reactor should be deenergized. The trip zone is bounded by boundaries XL min, XL max, R min and R max. Boundaries XL min, XL max and R min are constants, while R max is a variable, with its value being dependent upon the value of XL.
Steps 158 through 168 determine if the present values of R and XL fall within the trip zone, with step 158 comparing XL with XL min. If XL is less than XL min, the impedance cannot fall within the trip zone, and the program terminates the fixed reach comparison function by advancing to step 172. If XL is greater than or equal to XL min, step 160 checks to see if XL exceeds the XL max boundary. If it does, the impedance is outside the trip zone and the program advances to step 172. If XL is less than or equal to XL max, step 162 checks to see is R is less than the R min boundary. If it is less, the impedance is outside the trip zone, and step 162 advances to step 172. If R exceeds, or is equal to, R min, step 164 checks to see if R is greater than the largest value for boundary R max. If it is, the impedance is outside the trip zone, and step 164 advances to step 172. If R is less than, or equal to, this maximum value of R max, the value of R max for the specific value of XL may be obtained from a look-up table in ROM 60, such as Look-Up Table II shown in FIG. 6. The curve R max is defined in this Table. Alternatively, the equation for the curve R max may be solved to determine R from the XL value. Step 168 compares R with the value obtained from the Look-Up Table. If R exceeds this value, the apparent impedance of the reactor is outside the trip zone, and the program advances to step 172. If R is less than, or equal to, this value, the program advances to step 170, which prepares a trip signal for the local and remote circuit breakers 18 and 22, to deenergize reactor 14. The trip signal is sent to the output port 58, and from the output port to the trip circuit of the local circuit breaker 18. A direct transfer trip of the remote circuit breaker 22 is made by sending the trip signal to the trip circuit of the remote circuit breaker. This may be accomplished via any suitable communication link, such as power line carrier, a dedicated telephone line, or microwave. FIG. 1 illustrates the trip signal keying a transmitter 212, which transmits a trip signal to a receiver 214 associated with the remote circuit breakers 22. If a trip signal is generated, the program may exit, or simply return to step 66 for looping through steps 66 and 68 until the reactor is reenergized.
If the fixed reach comparison function does not detect a fault and produce a trip signal, the program advances to step 172 which checks to see if this is the first run through the program following the initialization step. If it is, the flag shown in FIG. 5 will be a zero, and it is thus known that there will be insufficient data to perform the next protective function of the invention. When step 172 finds the flag reset, step 174 sets the flag and the program returns to step 67 to await the next interrupt.
The next comparison function of the invention compares the present value of the apparent reactor impedance with a value found and stored in RAM 62 on an earlier determination. The next determination of R and XL can use 12 new samples for this determination, and thus R and XL would be determined once each power cycle, i.e., every 16.67 ms, or, once the first 12 samples have been received, new R and XL determinations may be made every time new V and I samples are received, i.e., every 1.389 ms, by adding the latest signal to the group of 12 and dropping the oldest signal of the group of 12, with this new group of 12 signals being used to make the determination. Thus, the change in apparent impedance of the reactor may be checked every 1.389 ms by comparing the latest impedance with that calculated during the immediately preceding calculation. Since an earlier detection of a fault may be made by determining the reactor impedance, and the change in reactor impedance, each time new voltage and current samples are received, the program set forth in FIGS. 4A, 4B and 4C implement this embodiment of the invention. Thus, after the initial power cycle, step 72 will always find that 12 samples are stored, with the storage format always storing the latest sample and deleting the oldest, to maintain the latest 12 samples for the algorithms. As shown in FIG. 5, at least the value of the voltage one complete cycle ago may also be saved, for implementing a desirable embodiment of the invention which will be hereinafter described.
If the transmission line has just been deenergized, it would not be desirable to perform the next protective function of the invention, because low frequency oscillations or ring-down upon line deenergization may cause false operation of the impedance change function. Thus, step 176 checks to see if the line has just been deenergized. This determination may be made by checking voltage, a combination of voltage and line current, voltage and current plus local breaker status, or by detecting that the line voltage or reactor current has assumed a frequency which is substantially different than 60 Hz. Instead of blocking the impedance change function upon detection of line deenergization, it would also be suitable to perform the impedance change function after adjusting the computed impedance to compensate for ring-down.
In the present embodiment, the impedance change function is not performed if step 176 detects that the transmission line has been deenergized, and the program may simply return to step 66 to loop through steps 66 and 68 until the line is again energized.
If step 176 does not detect line deenergization, the program enters a phase which is especially desirable when the shunt reactor 14 being protected is an iron core reactor. An increase in line voltage, such as due to switching operations or external fault clearing, can cause the apparent impedance of an iron core reactor to decrease. Thus, instead of determining the change in impedance and comparing it with a fixed characteristic, the next program portion detects voltage increases and adjusts the characteristic according to the magnitude of the increase. The characteristic is thus a dynamic characteristic, enabling much greater sensitivity to be achieved, as a fixed characteristic would have to be chosen to prevent misoperation due to drops in apparent impedance due to voltage increases. The modified characteristic is immediately returned to its normal value, as soon as the voltage returns to normal, which will usually be within a single power cycle.
More specifically, step 178 subtracts the voltage sample from the voltage sample precisely one cycle earlier, which value may be retained in RAM 62, as shown in FIG. 5. A positive voltage change ΔV indicates a voltage increase. Using the impedance versus voltage characteristic of the reactor being protected, a look-up Table may be stored in ROM, such as Look-Up Table III shown in FIG. 6, to determine the correct modification which should be made for the specific voltage change.
FIG. 8 is a ΔR-ΔXL diagram which sets forth a suitable characteristic for the impedance change function. Line voltage increases may be compensated for by requiring a greater reduction in ΔXL to cause tripping. For example, if ΔV exceeds a predetermined maximum value ΔV3 the ΔXL upper boundary shown in FIG. 8 should be lowered by the maximum amount, to the broken line reference ΔV3 in FIG. 8. If ΔV is less than ΔV3 but greater than a value ΔV2, the ΔXL upper boundary should not be lowered quite as much, such as to the broken line reference ΔV2 in FIG. 8. If ΔV is less than ΔV2 but greater than a value ΔV1, the ΔXL upper boundary should be lowered by a still lesser amount, to the broken line referenced ΔV1. If ΔV does not exceed ΔV1, no modification will be made to the upper ΔXL upper boundary, and it will thus be in the position of the solid line referenced "normal". Of course, a different number of modification steps may be used, depending upon the change in impedance with voltage for the specific reactor being protected. If the reactor being protected is an air core reactor, the reactor impedance does not drop significantly with a voltage increase, and the tailoring of the ΔR-ΔXL characteristic need not be performed.
Steps 180, 184 and 188 successively compare ΔV with magnitudes ΔV3, ΔV2 and ΔV1, respectively, and steps 182, 186 and 190, respectively, obtain the upper ΔXL boundary to be used when one of these steps finds that ΔV exceeds the comparison value. Steps 182, 186 and 190 each proceed to step 192, which step stores the value obtained from Look-Up Table III at a location STORE 5 in RAM 62, as shown in FIG. 5. If steps 180, 184 and 188 all find ΔV to be less than the comparison values, step 194 stores the normal value for the upper boundary of ΔXL at location STORE 5.
The impedance change function is now performed, with step 196 subtracting the present value of the resistance component of the reactor impedance from the previous value, to obtain ΔR. Step 198 stores ΔR in RAM 62, as shown in FIG. 5. Step 200 subtracts the present value of the reactive component XL of the reactor impedance from the previous value, to obtain ΔXL. A drop in the reactive component will be a negative number, with step 202 storing ΔXL in RAM 62, as shown in FIG. 5.
A dynamic reach comparison is now made wherein the change in impedance is compared with the characteristic defined by the ΔR-ΔXL diagram of FIG. 8. A point defined by the present value of ΔR-ΔXL which falls within the trip zone indicates a rate of change, or percent drop, which exceeds those which can occur normally, such as due to temperature changes or voltage increases. Changes due to the shorting of turns occur rapidly and produce a rate of change or percent drop within the trip zone of the FIG. 8 characteristic. This rate-of-change detection is independent of the actual values of R and XL, and can thus detect the shorting of turns even when the apparent impedance of the reactor is within its normal operating range.
More specifically, step 204 compares ΔXL with the upper boundary of the ΔXL characteristic, obtaining this value from location STORE 5 of RAM 62. If ΔXL exceeds, i.e., is more positive, than the ΔXL upper boundary, the impedance cannot be within the trip zone and the program returns to step 67 to await the next interrupt. If ΔXL is not more positive than the upper boundary, steps 206 checks to see if ΔXL is less than, i.e., more negative, than the ΔXL lower boundary. If it is more negative, the impedance cannot be within the trip zone, and the program returns to step 68. If ΔXL is more positive than the lower boundary, step 208 checks ΔR to see if it is less than, i.e., more negative, than the ΔR constant which defines the left side boundary of the characteristic. If it is more negative, the reactor impedance cannot fall with the trip zone, and the program returns to step 68. If it is not more negative, step 210 checks to see if ΔR is greater than, i.e., more positive, than the ΔR constant which defines the right side boundary. If it is greater, the impedance is outside the trip zone. If it is not greater, the impedance lies within the trip zone and the program returns to step 170 to prepare trip signals for the circuit breakers, as hereinbefore described.
While the invention has been described using the impedance, and the rate of change of the impedance, of the reactor, which is the preferred embodiment, it is to be understood that the reactance, and the rate of change of reactance, may be used. This embodiment would be implemented by merely omitting the steps in FIGS. 4A, 4B and 4C which check the resistance boundaries.
In summary, there has been disclosed new and improved methods and apparatus for protecting shunt reactors, which methods and apparatus detect shorted turns with a sensitivity not achievable by prior art protective methods and apparatus. By comparing the rate of change, or percent drop, of the reactor impedance with a predetermined value, turn-to-turn faults are detectable, even when the impedance of the reactor is within its normal range.
|Cited Patent
|Filing date
|Publication date
|May 25, 1972
|May 1, 1973
|Westinghouse Electric Corp
|Impedance distance relay
|Dec 23, 1974
|Nov 2, 1976
|Westinghouse Electric Corporation
|Load saving over current apparatus for shutdown in a reactive power generator
|Apr 15, 1976
|Jan 10, 1978
|Westinghouse Electric Corporation
|Fast current measurement apparatus for static VAR generator compensator control circuit and method for using same
|Aug 3, 1979
|Jan 26, 1982
|Tokyo Denryoku Kabushiki Kaisha
|Fault detecting system for locating a fault point with a fault resistance separately measured
|Mar 26, 1980
|Aug 10, 1982
|Tokyo Shibaura Denki Kabushiki Kaisha
|Digital type distance relay system
|Citing Patent
|Filing date
|Publication date
|Sep 20, 1982
|Aug 7, 1984
|Hitachi, Ltd.
|Protective relay
|Sep 29, 1982
|Mar 26, 1985
|Tokyo Shibaura Denki Kabushiki Kaisha
|Protective relaying system
|Nov 6, 1985
|Aug 25, 1987
|Mitsubishi Denki Kabushiki Kaisha
|Digital distance relay
|Apr 26, 1985
|Sep 15, 1987
|Westinghouse Electric Corp.
|Programmed overexcitation protective relay and method of operating the same
|Apr 10, 1986
|Nov 10, 1987
|The General Electric Company, P.L.C.
|Protection apparatus
|Oct 14, 1986
|Sep 20, 1988
|Hitachi, Ltd.
|Transformer protection system
|Dec 2, 1987
|Jan 2, 1990
|Hitachi, Ltd.
|Static var compensator with thyristor control
|Mar 22, 1989
|Mar 6, 1990
|Asea Brown Boveri Ab
|Method and a device for fault location in the event of a fault on a power transmission line
|May 28, 1996
|Apr 7, 1998
|Square D Company
|Metering unit with enhanced DMA transfer
|Apr 6, 1999
|Nov 14, 2000
|Alstom Uk Ltd.
|Prediction of harmonic distortion and application of power-factor correction in AC power systems
|Oct 25, 1999
|Oct 2, 2001
|Mcgraw Edison Company
|Protection system for devices in an electrical distribution network
|Oct 24, 2001
|Mar 29, 2005
|General Electric Company
|Fault current limiter
|Nov 2, 2004
|Feb 12, 2008
|General Electric Company
|Fault current limiter
|Apr 11, 2011
|Jul 15, 2014
|General Electric Company
|Online monitoring system and method to identify shorted turns in a field winding of a rotor
|Oct 24, 2001
|Apr 24, 2003
|Shah Manoj Ramprasad
|Fault current limiter
|Nov 2, 2004
|Apr 28, 2005
|Shah Manoj R.
|Fault current limiter
|Jul 9, 1993
|Oct 7, 1993
|Elbag Elektro Schaltschrank U
|Vorrichtung zur �berwachung der Temperatur von Bauelementen und Ger�ten
|Oct 13, 1986
|Apr 29, 1987
|Hitachi, Ltd.
|Transformer protection system
|Sep 15, 1987
|May 4, 1988
|Electricity Association Services Limited
|Remote protection of three phase distribution transformers
|Jan 17, 1990
|Jul 24, 1991
|Siemens Aktiengesellschaft
|Protection device for an electric machine
|Sep 15, 1987
|Oct 23, 1991
|Electricity Association Services Limited
|Remote protection of three phase distribution transformers
|Sep 15, 1987
|Oct 23, 1991
|Electricity Association Services Limited
|Remote protection of three phase distribution transformers
|Sep 15, 1987
|Nov 6, 1991
|Electricity Association Services Limited
|Remote protection of three phase distribution transformers
|U.S. Classification
|361/79, 361/80, 323/211, 702/65
|International Classification
|Cooperative Classification
|European Classification
|Aug 17, 1981
Owner name: WESTINGHOUSE ELECTRIC CORPORATION, WESTINGHOUSE BL
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UDREN, ERIC A.;REEL/FRAME:003908/0864
Effective date: 19810812
Owner name: WESTINGHOUSE ELECTRIC CORPORATION, PENNSYLVANIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UDREN, ERIC A.;REEL/FRAME:003908/0864
Effective date: 19810812
|Dec 15, 1982
Owner name: ELECTRIC POWER RESEARCH INSTITUTE, INC.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WESTINGHOUSE ELECRIC CORPORATION;REEL/FRAME:004068/0101
Effective date: 19821129
|Jul 10, 1986
|Fee payment
Year of fee payment: 4
|Apr 16, 1990
|Fee payment
Year of fee payment: 8
|Oct 25, 1994
|Maintenance fee reminder mailed
|Mar 19, 1995
|Lapse for failure to pay maintenance fees
|May 30, 1995
|Expired due to failure to pay maintenance fee
Effective date: 19950322


text:
John Asher , Guest - Celebrities attend An Autism Awareness Screening of the feature film Po at Paramount Studios. at Paramount Studios - Los Angeles, California, United States - Tuesday 5th April 2016
Julian Feder , John Asher - Celebrities attend An Autism Awareness Screening of the feature film Po at Paramount Studios. at Paramount Studios - Los Angeles, California, United States - Wednesday 6th April 2016
'Playmate of the Year' Jenny McCarthy can't bring herself to properly get into the amateur porn game, due to how she doesn't look like "a fancy porn star".
Former Playboy model and 1994 'Playmate of the Year', Jenny McCarthy, has tried on multiple occasions to get into the armature porn scene with her husband, John Asher. Unfortunately for her, she states that she never looks as good as she would want, and gets her husband to erase the tapes after she takes a look at them. Her biggest complaint is that she doesn't look like the "a fancy porn star" she wants to.
Related: Jenny McCarthy Gushes About "The Best Husband Out There" Donnie Wahlberg
In an interview with 'FMH' men's magazine, McCarthy talked about filming herself having sex, explaining that: "We've done it maybe three times, but I've made him erase the tape afterwards because I didn't look like a fancy porn star. On the other hand, I've gotten into watching amateur porn lately. It's fan-f**king-tastic - those people are really getting off and you know it's just somebody's friend taping it."
Perry performed 'Rise' and 'Roar' before Clinton accepted the nomination to be the Democrats' presidential candidate.
Bruce Springsteen will release rare tracks from 1966 in new album 'Chapter and Verse', which will accompany his autobiography 'Born To Run'.
There's still no reunion planned though.
Not broadcast in its entirety since 1967, a full restoration will be played in select cinemas to support Ron Howard's 'Eight Days a Week' touring...


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Forum indexOlympus SLR TalkChange forum
I guess this is fairly serious ...
Started Mar 28, 2013 | Discussions thread
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viorel • Contributing Member • Posts: 939
Re: I guess this is fairly serious ...
In reply to eastendswift • Mar 28, 2013
It took 1 month for Olympus to repair my 70-300, including transportation. The repair was done in Czech Republic. I was lucky I didn't need it.
hope you'll solve it somehow (and E1 is still not a bad camera at all, at least you have a back up).
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Pallekele International Cricket Stadium, Kandy ,7/26/2016, 10:00 (IST)
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Rimi Tomy is a popular playback singer in Malayalam. Her debut was in the film \Meesa Madhavan\, directed by Lal Jose. Her first Song was \Chingamasam VannuChernnal\. She was studying for her degree, 1st year, when she debuted in Malayalam cinema. After her debut film which won her critical acclaim and various honours, this young singer has created a name for herself in Malayalam cinema industry. She also takes part in various stage shows, TV shows and other entertainment programs in India and abroad. She was born in Palai, central Kerala. Her parents are Tomy, who served in Indian Army and mother Rani. She has a brother Rinku and sister Reenu. She is married to Royce, a businessman from Thrissur on 27 April 2008.
Who is Hollywood's sexiest actress?


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The inability to bang a chick. Usually accompanied by excess back rubs and massage.
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Bio: 8Forty8 are a rock band from Hamilton, New Zealand. Influenced by 70's supergroups like Deep Purple and Led Zeppelin, they are renown for their live show which is action packed, dynamic and powerful. A band of four brothers with a true passion for classic rock music. In 2008, members were invit...See Full Bio
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Based in the UK, using value for money good mail service. Products made/supplied by Nodor, the biggest Darts, flights, stems etc people about.
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Stirred curd Cheddar
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- Heat milk to 90 degrees, add culture (1/2c buttermilk per 2 gals
- milk), cover and hold at 90 degrees for 45 minutes. Add rennet,
- hold at 90 degrees for 45 minutes. Cut curds and let sit 15 minutes.
Stir curds and warm to 100 degrees over the next 30 minutes. Hold for 30 minutes at 100 degrees. Drain curds and put back in pot. Add salt (1T per gallon milk) and stir to mix it in, separating curds. Allow curds to sit at 100 degrees for 1 hour (stir when necessary to keep curds from sticking together) Press curds and allow to dry 2-3 days Wax curd and age (2-6 months, even longer for sharp cheese)
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When to Catch Tonight's Lunar Eclipse
A lunar eclipse in 2008, as seen from Portland, Oregon.
You can put away the fake fangs and I (heart) Edward T-shirts -- we're talking astronomy, not the latest vampire fantasy installment.
Tonight (and tomorrow morning, depending on your time zone) marks Winter Solstice and the year's second lunar eclipse. It's the year's second lunar eclipse and the first total lunar eclipse to take place at the same time as Winter Solstice in almost 400 years.
Check out when it's visible in Phoenix after the jump ...
In case you didn't make one of those foam ball mobiles in elementary school, a lunar eclipse occurs when the sun, earth and moon are aligned exactly, so that the earth (in the middle) blocks the sun's rays from the moon.
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Winter Solstice, or the first day of winter, occurs when the earth's axial tilt is the farthest from the sun. It's also associated with cultural festivals and rituals.
While there are 12 total phases of tonight's eclipse, the beginning of the total eclipse is expected to start around 12:40 a.m. (Tuesday) and last until 1:30 a.m.. Because of the way the moon passes through the two shadows of the earth, it will appear glowing orange-red, and unlike a solar eclipse, tonight's lunar eclipse is safe to view with the naked eye.
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|By Jeremy Geelan
Article Rating:
|October 19, 2009 05:07 AM EDT
"Virtualization requires massive volume to be profitable. Cloud computing will enable that massive volume." With succinct sound bites like that, it is not surprising that Barry X Lynn, CEO of 3Tera (pictured below), is much in demand as a speaker at conferences devoted to Cloud & Virtualization.
In this brief interview with SYS-CON's Cloud Computing Journal, in the run-up to 3Tera's participation in the 4th International Cloud Computing Conference & Expo, Lynn discusses the current buoyant state of cloud computing, including the whys and the wherefores of its growing success and pervasiveness.
Before all else, Lynn is keen to "nail" the nitty-gritty question of what IS Cloud?
"Cloud computing." he notes, "is the encapsulation of applications with everything they need to run, and their abstraction from the physical resources they run on, so they can run anytime, anywhere. Don't let anyone sell you any less!"
Here are some of the other questions asked and answered during the interview:
Cloud Computing Journal: Where do you think Cloud Computing will make its impact most noticeably in 2010?
Barry X Lynn: More and more service providers will offer Cloud services. Enterprises will start implementing private and hybrid Clouds
Cloud Computing Journal: What is the biggest category of user is not using the Cloud right now, who ought to be?
Lynn: The biggest category of users not using Clouds are those that have not had a light bulb go off in their heads that tells them - Hey - I'm in the financial services business. Hey, I'm in the healthcare business. Hey, I'm in the manufacturing business. Why the heck am I managing servers???!!!
Cloud Computing Journal: How important is Virtualization to the Cloud, and vice versa?
Virtualization is as important to Cloud as a hammer is to a carpenter. Virtualization is a tool that is used in Cloud Computing. But virtualizations knows nothing about applications - only about the virtual machines that make up applications. Cloud encapsulates entire applications.
Virtualization has become commoditized. As such, virtualization requires massive volume to be profitable. Cloud computing will enable that massive volume.
Cloud Computing Journal: Who in your view are the Top Three Companies in the Cloud as at Fall 2009?
Lynn: 3Tera - a pioneer and the only turnkey platform that powers public, private and hybrid clouds; Amazon - also a pioneer and the clear market share leaders; and Google - because they are Google and there's a place for the Cloud as an advertisement media.
Cloud Computing Journal: Lastly, which Cloud Companies are the most likely to be bought up next by the giants?
Lynn: I think that Cloud Computing represents the future of IT and the next generation datacenter. Companies that enable management of this next generation will be gobbled up by giants as Cloud becomes pervasive - and it will!!!
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AlfiKarma: 15
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|Feb 07, 2012
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Hanson's Son Knows UConn Tradition
There are 15 comments on the Hartford Courant story from Jul 22, 2008, titled Hanson's Son Knows UConn Tradition. In it, Hartford Courant reports that:T ony Hanson, speaking with a hint of an English accent, seems to fear he is a little overbearing when it comes to having his son, David, get a feel for UConn tradition.
Join the discussion below, or Read more at Hartford Courant.
United States
#1 Jul 22, 2008
Sounds like this guy is a stiff.
#2 Jul 22, 2008
What's the point of this article? Should I be interested in Tony Hanson who played for Uconn in the 70's? or Should I be interested in his son that isn't good enough to play for Uconn in 2009? If this a news worthy story please poke my eyes out with a stick.
United States
#3 Jul 22, 2008
If you know anything about UConn hoops you'd know Tony Hanson was one of their best players pre-Big East. If you're too young to have seen him play, fine, but why the cranky attitude?
United States
#4 Jul 22, 2008
bring your eyes over here fella, i'll poke them with this stick....Tony Hanson, Jim Ambromitas, Corny Thompson, etc etc...the ROOTS of UCONN Ball that got us to where we are now...now kneel down sonnyboy
#5 Jul 24, 2008
I've seen Hanson's son play and at best he's a D3 player. Nothing wrong with that but he is not a scholarship player. As for Tony Hanson, he is a UCONN legend. About 5 years ago or so I saw him run pick up ball and he was still bustin ass. He was a ferocious competitor.
#6 Sep 16, 2008
You have no idea what you're talking about!! Hanson and Thompson played over thirty years ago. They played in Europe and had a 1/2 cup of coffee with an NBA team. What does that have to do with anything?
#7 Sep 21, 2008
well, for one we're talking UConn and not post UConn....like you, you were good in the 3rd grade and then ended up serving fries for a living...doesn't mean your 3rd grade good efforts make you a bum...
#8 Oct 7, 2008
You wouldn't knowa news worthy story if it hit in the face. Go clean the toilets. They're beginning to smell.
#9 Oct 19, 2008
i know there are many different types of stories out there that reach diffrerent people in different ways. The Tony Hanson story was a nice little piece of nostaglia - a sort of 'where are they now' type. It interested me, it didn't you - big deal. Now, what do you do with these hard hitting news stories you crave? You probably feel like a big boy and yap about them, but can you talk to anyone about anything in this world. It takes more than the "big boys news" to converse in this world.
#10 Oct 21, 2008
Why are you so interested in Tony Hanson. No one except you cares about Tony Hanson. Seriously. You are a joke!!!!!
Billingham, UK
#11 Nov 19, 2008
Tony is my dad n my brother is d1 potential he is a legend keith i bet u have never played bball anywhere near that level
United States
#12 Nov 22, 2008
it seems that you are more interested in Tony Hanson than i am....i enjoyed the story and moved on.... you are bent on blasting him and making sure everyone else does too or else....in the end, YOU are the joke...
United States
#13 Nov 22, 2008
i enjoyed watching you Dad play...i was a young boy playing bball myself and i certainly was influenced by his hustle and determination on the court....and i am still influenced by him when i go thru airport checks by keeping my mouth shut and not cracking jokes - i think of him every time at the checkpoint...
#14 Apr 20, 2009
Just seeing those old pictures of Tony bring back so many memories of high school. He made basketball look so effortless. He had that sort of a 'fro, but it wasn't round like the many of the other ones at the time. The ends were sort of stright so when he ran down the court it had this rhythmic bounce to it. Almost hypnotic. The Holy Cross gym was pretty small compared to the UConn fieldhouse at the time, so everyone was packed like sardines screaming...pretty wild. I miss the 70s :(
#15 Jul 20, 2012
david hanson works at my school now, and his mom is the deputy head, and tony came in and did a speech about his life, great person :))
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