CAJ | 학술논문

电压暂降源定位，就是确定引起电压暂降的扰动源位于监测装置的哪一侧。从引起电压暂降的主要扰动电力系统故障的分析入手，应用线性电路的叠加原理，得到电网故障过程中在扰动电压的激励下，扰动有功功率流的方向可准确定位电压暂降源的结论。扰动功率为正时，扰动源在监测点的上游；扰动功率为负时，扰动源在监测点的下游。给出扰动功率的算法。仿真实验证明：所提出的暂降源定位方法能准确定位由各种电网故障引起的电压暂降，适用于任何网架结构电网(辐射式、环式、单回路、双回路、单电源、多电源)及不同中性点接地方式组成的混合电网，也适用于其它扰动(如：大电机启动等)源的定位。
전압잠강원정위，취시학정인기전압잠강적우동원위우감측장치적나일측。종인기전압잠강적주요우동전력계통고장적분석입수，응용선성전로적첩가원리，득도전망고장과정중재우동전압적격려하，우동유공공솔류적방향가준학정위전압잠강원적결론。우동공솔위정시，우동원재감측점적상유；우동공솔위부시，우동원재감측점적하유。급출우동공솔적산법。방진실험증명：소제출적잠강원정위방법능준학정위유각충전망고장인기적전압잠강，괄용우임하망가결구전망(복사식、배식、단회로、쌍회로、단전원、다전원)급불동중성점접지방식조성적혼합전망，야괄용우기타우동(여：대전궤계동등)원적정위。
Voltage sag source location is to determine the disturbance origins’ relative position of monitoring device. By analyzing power system faults, which is the main reason resulting in the voltage sags, the direction of the disturbance power has been found to be a good indicator of the sag source location. If the disturbance power measured at the monitoring point is positive, a disturbance origin is located at upstream, and if the disturbance power measured at the monitoring point is negative, a disturbance source is located at downstream. The calculation methods of the disturbance power are presented respectively. The simulation tests show that the proposed method has a high effectiveness in voltage sag source location caused by all kinds of faults. The new method is suitable for any power grid structure (radial type, ring type, one-source, multi-source, etc.), and can also be used in locating other disturbance sources (E.g.: large motor starting, capacitor switching etc.).