Research on Coordinate Voltage control Method Using LRT/SVR and SVC

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The penetration of distributed generator such as PV systems causes voltage fluctuation and wide voltage gap between voltage rise and voltage drop. These influence occurs exceedance of the proper voltage range in distribution network connected with PV systems. In order to resolve the exceedance of the proper voltage range based on the voltage gap and fluctuation, the author proposed a coordinated voltage control method by LRT, SVR and STATCOM. The proposed method has two functions ; the first function (voltage gap reducing function) is to reduce the voltage gap by centralizing control of LRT and SVR, and the other (voltage smoothing function) is to smooth rapid voltage change by autonomous control of STATCOM.