宁夏电网220 kV互感线路参数带电测量

简要介绍了互感线路参数带电测量理论和关键技术，详细介绍了采取外加零序电源和通过对带电运行线路采取单相断路器短时跳闸获取测量源这两种带电测量方法，并进行了宁夏电网２２０ｋＶ互感线路参数的现场带电测量实验。文中给出了试验电源的选取方法、具体的测量接线图、测量步骤、数据处理方法和测量结果。实测结果表明带电测量方法不但简单、测量精度高，而且完全能满足工程要求。

LIVE LINE MEASUREMENT OF PARAMETERS OF 220 kV TRANSMISSION LINES WITH MUTUAL INDUCTANCE IN NINGXIA POWER NETWORK

Based on GPS technology,the principles and key techniques for live line measurement of zero- sequence parameter of transmission lines with mutual inductance are brought forward firstly. Then two methods for live line m easurem ent of 2 2 0 k V transm ission lines in Ningxia Power Network in northwest China are given in detail. One method is using an external power source,the other is using the m ethod to trip the single- phase breaker of the operation line and quickly turn on the breaker to produce a large zero sequence current for measurement. Selection of the method of the test,the power source,the wiring diagram ,the m easurem ent measures,the data processing method and live line measurement results are given. The results prove that the system can m eet the need of live line measurement of parameters of transmission lines.