基于相分量模型考虑零序互感线路的跨线故障计算方法

Phase Component Model Based Calculation Method for Inter-Line Fault Occurred in Parallel Circuits on Same Tower with Zero-Sequence Mutual Induction

基于输电线路的相分量模型,提出了利用相分量法对同杆并架线路上的跨线故障进行计算的方法。根据跨线接地故障与跨线不接地故障的通用接口情形推导出其相分量节点导纳矩阵统一模型,在此基础上提出了同杆并架线路上发生典型跨线故障时的节点导纳矩阵模型及其算法。通过典型跨线故障算例表明了该模型及算法适合于编制通用的跨线故障计算程序。仿真结果证实了该模型及算法的正确性。

Based on phase component model of transmission line, a method to calculate inter-line fault occurred in parallel circuits on same tower is proposed by use of phase component method. According to the general interface situation of inter-line and inter-line-to-earth faults, the unified node-admittance-matrix models with phase-component are deduced, on this basis the node-admittance matrix model and corresponding algorithm for typical inter-line fault occurred in parallel circuits on the same tower are proposed. The results of case study on typical inter-line fault show that the proposed model and algorithm are suitable to develop versatile calculation program for inter-line faults, The correctness of the proposed algorithm and model are verified by simulation results,