适用于严苛正序助增系数计算的故障位置快速选取方法  

A fast fault location method for a rigorous positive sequence auxiliary increasing coefficient calculation

作　　者：邹毅[1] 黄超 李银红[1] ZOU Yi;HUANG Chao;LI Yinhong(State Key Laboratory of Advanced Electromagnetic Technology(Huazhong University of Science and Technology),Wuhan 430074,China;Power Dispatching Control Center of Guangxi Power Grid,Nanning 530023,China)

机构地区：[1]强电磁技术全国重点实验室(华中科技大学),湖北武汉430074 [2]广西电网电力调度控制中心,广西南宁530023

出　　处：《电力系统保护与控制》2024年第2期70-79,共10页Power System Protection and Control

基　　金：国家自然科学基金项目资助(52207107);广西电网公司科技项目资助(046000KK52222012)。

摘　　要：针对相间距离保护整定计算中严苛正序助增系数对应故障位置的选取效率较低及精度不足的问题,提出适用于严苛正序助增系数计算的故障位置快速选取方法。首先,基于节点阻抗矩阵及矩阵元素的修改公式,推导了正序助增系数表达式,整理得到13类正序助增系数随故障位置移动的可能变化趋势。然后,通过研究正序助增系数随故障位置移动的变化规律,得到5条严苛正序助增系数对应故障位置的选取判据,提出一种适用于各类复杂网络结构的故障位置快速选取方法。最后,通过IEEE多节点标准测试系统验证了所提方法的有效性。故障位置选取精度高于规程选取方法,选取效率高于多点选取方法。To improve the locating efficiency and accuracy of the fault location matching the rigorous positive sequence auxiliary increasing coefficient(PSAIC),a fast fault location method is proposed for the rigorous PSAIC calculation for phase distance protection.First,based on the bus impedance matrix and the modified formula of matrix elements,the expression of PSAIC is derived,and the 13 possible PSAIC variation trends with fault location movement are obtained.Then,by analyzing the PSAIC variation pattern with fault location movement,five selection criteria for fault location matching the rigorous PSAIC are established,and a fast fault location method is proposed suitable for various network structures.Finally,the method’s efficiency are verified by the IEEE multi-bus benchmark test system.The locating accuracy is more elevated than the procedure locating method,and the efficiency is higher than the multi-location method.

关 键 词：继电保护 整定计算 相间距离保护 正序助增系数 故障位置 

分 类 号：TM773[电气工程—电力系统及自动化]