基于感受阻抗的相间距离保护整定计算方法  

Phase distance protection setting method based on detecting impedance

作　　者：蒋科[1] 吕飞鹏[1] 郭亮[1] 罗长亮[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《电力系统保护与控制》2009年第13期129-133,共5页Power System Protection and Control

基　　金：四川省应用基础研究项目(2007JY085)~~

摘　　要：在分析传统相间距离保护速动段、配合段整定计算方法局限性的基础上,针对传统整定方法整定多端线路存在的不足,提出了基于感受阻抗的相间距离保护整定方法,并给出了通用的整定计算公式。该方法不受网络拓扑结构的影响,解决了整定线路、配合线路为多端线路时传统相间距离保护整定方法存在的问题,能有效提高多端线路上相间距离保护的保护范围及灵敏度,对于普通线路同样适用。通过算例,比较分析了传统整定计算方法和基于感受阻抗整定计算方法的定值性能,验证了所提方法的有效性。Based on the analysis of the limitation on the first zone and the coordination zone of the conventional phase distance protection setting calculation method, a method based on the detecting impedance and universal setting formulae are proposed considering the shortage of conventional setting calculation method for multi-terminal lines. Using the proposed method, the problem of conventional setting calculation method for multi-terminal lines will be solved, the coverage and sensitivity of multi-terminal lines protection can be improved efficiently, and the influence of network topology structure will be removed. The method is validated through an example and the performance of settings is compared.

关 键 词：相间距离保护 整定配合 感受阻抗 

分 类 号：TM773[电气工程—电力系统及自动化]