Fuzzy control to dynamically alleviate bottlenecks in low-voltage grids

The base for an energy management system (EMS) in the low-voltage grid is a control for grid coupling on this level. Grid coupling has the advantage that conventional expansion can be reduced. The infrastructure can be protected from overload and the voltage limit will be maintained. This reduces the conventional expansion. This paper presents a fuzzy based control for dynamical grid coupling and his simulation model. To build up the fuzzy, the input parameters must be defined. In case of different digital measurement expansion levels, the parameters are calculated by the minimum of needed input, the voltage and the current of the feeder in the substation. The simulation results are presented and discussed.