史丽萍,于婷,罗朋,冯学俊.基于改进扰动功率法的电压暂降源定位[J].电测与仪表,2015,52(7):. SHI Li-ping,YU Ting,LUO Peng,FENG Xue-jun.Voltage Sag Source Location Based on Improved Disturbance Power Method[J].Electrical Measurement & Instrumentation,2015,52(7):.
基于改进扰动功率法的电压暂降源定位
Voltage Sag Source Location Based on Improved Disturbance Power Method
In the face of power quality problems caused by voltage sag, this paper proposes an improved disturbance power method combined with the common type of fault in power system. It redefines the disturbance power by taking the disturbance voltage multiplied with the disturbance current, according to the superposition principle of linear circuit, fault network can be equivalent to the normal plus the disturbance component, then uses the polarity of transient disturbance power or half-cycle average to locate the voltage sag source. Finally through simulation by Matlab model, this approach proves to be accurate in voltage sag location.
