METHOD AND DEVICE FOR REDUCING VOLTAGE IMBALANCES IN A THREE-PHASE NETWORK BY MEANS OF A STATIC COMPENSATOR

摘要

The invention relates to a method and a device for reducing imbalances (.DELTA.V12, .DELTA.V23, .DELTA.V31) in a three-phase network (42) by means of a static compensator. According to the invention, a correction signal (.DELTA.B12, .DELTA.B23, .DELTA.B31) is in each case superimposed on a mean susceptance value (Bsvc), which is produced, of the static compensator, which correction signals (.DELTA.B12, .DELTA.B23, .DELTA.B31) are in each case proportional to an imbalance (.DELTA.V12, .DELTA.V23, .DELTA.V31), which imbalances are determined from measured line to earth voltages (V01, V02, V03) by comparisons, in pairs, of the determined line to line voltages (V12, V23, V31). Imbalances (.DELTA.V12, .DELTA.V23, .DELTA.V31) in the three-phase network (42) can thus be reduced in a simple manner.