Abstract
This paper is to study the enhancement of power system quality for distribution feeders with wind generator (WG) by applying the static synchronous compensator (STATCOM) to provide the voltage support during fault contingency. The critical clearing time for circuit breaker tripping to isolate the fault is derived by considering the low voltage ride through capability of WG and the reactive power compensation by STATCOM system. To restore the stable operation of the microgrid after the fault transient disturbance, an adaptive load shedding scheme is proposed to disconnect proper amount of nonessential loads according to the feeder loading and wind speed so that the tripping of WG due to under frequency constraint can be prevented. A Taipower distribution system has been selected for computer simulation to verify the effectiveness of the proposed strategy to determine the setting feeder CB tripping and load shedding to improve the power system stability of distribution feeder with wind generator.
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