1. A method for the operation of a wind farm grid system by networking between a farm master and a multiplicity of individual wind turbines (WKA) of a wind farm via a central network for the purpose of data transmission in both directions, the central network having a data transmission protocol comprised of an International Organization for Standardization (OSI model) having a physical layer, an isonet controller layer, a network (IP) layer, a transport (UDP/TCP) layer, a session (RPC) layer, and a wind farm protocol (WPP) application layer, wherein a protocol for networking a multiplicity of wind tower groups with farm master via a central farm network is provided so that the quantity structure of up to 500 wind turbines can be regulated with a cycle time of a few milliseconds via the farm management system, the method comprising: transmitting data from the physical layer to the isonet controller layer; providing normal TCP/IP communication via the IP, UDP/TCP, and RPC layers between the isonet controller layer and the WPP application layer; bridging the IP, UDP/TCP, and RPC layers with a WPP real-time driver; transmitting required real-time wind-farm-operation data from the isonet controller layer to the WPP real-time driver; and directly transmitting said required real-time wind-farm-operation data from the WPP real-time driver to the WPP application layer.