220 / 110 acv home voltage stabilization
If the LEDs are driven by a low voltage power supply, you could just get a high quality regulated power supply that supplies a tightly controlled output voltage irrespective of the input voltage fluctuations.  If your LED lights are on regular 120V fixtures, it's a harder problem.  

A whole-house solution is possible but probably impractical, it would have to be rated for the full amperage of your service, which would be very expensive.  

You can could have a power conditioner installed for lighting circuits, it wouldn't be too bad to install one or two.  

If you use dual conversion "online" UPS's, they can correct for low voltage for the loads that they power.  Line interactive UPS's generally do not.  That would be helpful for the electronics, or for the LED lights if they run off a corded power supply.