The control of power system networks will become more and more difficult due to installation of new facilities and uneven distribution of loads and generation. In particular, keeping voltage profile at desired value is becoming main problem in power system control because large voltage fluctuation at the substation bus occurs very frequently which makes the power system more and more unstable. In this paper, voltage reactive power controlling method based on time schedule control of shunt reactor and static capacitor is presented. This approach corrects the time schedule of voltage control equipment according to the fluctuation of voltage comparing with the result of power system state forecasting.
This approach is evaluated with small scale and whole power system, and the results show that this proposed method successfully reduces amount of voltage violation and transmission power loss comparing with real data.
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