method for central blindleistungskompensation in one or mehrphasigen a.c. power mains, and device for implementing the same

摘要

The method involves first determining the reactive power requirement for each controlled load and the maximum total reactive power taking into account the further load(s) and selecting the total number of compensation capacitors required to compensate the total reactive power. The instantaneous switch commands for the load controllers are determined and used to establish the instantaneous reactive power demand of the controlled loads. A combination of compensation capacitors most closely approximating to the sum of the reactive powers is switched in via the corresp. electronic switches.