变结构与参数电力系统中互感线路非对称断相故障的快速计算

FAST CALCULATION OF OPEN - CONDUCTOR FAULTS ON TRANSMISSION LINE WITH ZERO-SEQUENCE MUTUAL COUPLING IN POWER SYSTEMS WITH VARIABLE STRUCTURES AND PARAMETERS

本文基于补偿原理,建立起变结构与参数电力系统中互感线路非对称断相故障的各序通用计算模型,在此基础上,根据迭加原理和互易定理,提出了一种不修改原网各序节点阻抗阵快速计算变结构与参数电力系统中互感线路非对称断相故障的新方法。该方法具有计算量小、结果精确、各序网处理方法统一等特点。

Based on compensation theorem, a new model for calculating open-conductor faults on a transmission line with zero-sequence mutual coupling in power systems with variable structures and parameters is developed. On this basis, according to superposition and reciprocal theory, a new method is presented for fast calculation of this kind of faults without modifying the impedance matrices of each original sequence networks. The method has been proved to be precise and effective by a numerical example.