互感线路零序参数带电测量方法研究

互感线路零序参数的常规测量方法只能用于停电测量,而对于经多年扩建形成的线路组,全部停电进行互感测量无法实现。针对上述情况出现了很多带电测量输电线路零序互感参数的新的理论和技术,包括干扰法、增量法、微分法、积分法等。对干扰法、增量法、微分法、积分法4种方法的数学模型和测量原理进行深入分析并对其带电测量的方法和手段进行研究,旨在对这4种互感线路零序参数带电测量方法从理论和实践上进行探讨,总结出这些方法的优缺点和适用范围,并在此基础上针对某些缺点提出了改进措施和意见。

Live line measurement of zero-sequence parameters for transmission lines with mutual inductance

The conventional measurement of zero - sequence parameters for transmission lines with mutual inductance is only applicable to deenergized line,but it is impossible now to deenergize all lines of an area. Theories and technologies of live line measurement have appeared,including the interference method,the incremental method,the differential equation method and the integral equation method. The mathematical model and measurement principle of the four methods are analyzed and their live line measurement means are studied in theory and practice. Their advantages and applicable scopes are summarized and the improvement suggestions are presented.