HIGH-CAPACITY HYBRID POWER FILTER FOR HARMONIC SUPPRESSION AND REACTIVE POWER COMPENSATION IN THE POWER SUBSTATION

A high-capacity hybrid power filter for harmonic suppression and reactive power compensation of high-voltage power substation is proposed. The proposed system is composed of the passive power filter and active power filter, which is able to compensate power factor and current harmonic simultaneously for the high-capacity power substation. A kind of configuration of high-capacity hybrid power filter has been proposed, the principles of operation are discussed, the design of passive power filter and analysis of injecting harmonic current by active power filter are given. The digital controller based on DSP for the active power filter is presented. Finally the results of simulation and industrial application are given to verify that the proposed system has good characteristic of reactive power compensation and harmonic filter.