电源阻抗对高压电网故障定位精度的影响

SOURCE IMPEDENC-FACTOR INFLUENCING THE FAULT LOCATION PROCISE IN HIGH VOL TAGE POWER NETWORK

导出了高压电网电源阻抗与电力系统总阻抗的函数关系，论述了来自观测电网的电源阻抗的基本特性，同时证明，在利用这一特性进行电网故障定位时，所观测线路环形程度和电压水平对故障定位精度有直接影响。

Abstract The function between the source impedence in a high voltage power network and to-tal impedence in power system is deduced and it is discussed that basic characteristic of the source impedence that is from detection power source .At the same time ,it is proved that when fault point is located by means of the characteristic, direct factors influencingprecision of location are the degree of detected lines and the level of network voltage. SUBJECT TERMS:power source impedence,netwofrk,tion procise