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在分析电压自适应和相位自适应重合闸判据的基础上,结合同杆并架双回线单相故障和单相跨单相故障时的电气量特征,提出了一种基于相位自适应判据、电压自适应判据及按相序重合的组合判据。仿真结果表明该判据可以准确地判别同杆并架双回线路单相故障和单相跨单相故障的故障性质,有助于提高同杆并架双回线路自动重合闸的成功率,降低重合于永久性故障时对电网安全稳定运行的影响。
Based on the analysis of voltage adaptive and phase adaptive reclosing criteria and combining with the characteristics of electric quantities when single-phase single-phase fault on single-frame parallel lines and single-phase single-phase fault occurs, According to the voltage adaptive criterion and according to the combination of phase sequence coincidence criteria. The simulation results show that the criterion can accurately determine the fault nature of single-phase fault and single-phase single-phase fault with double-circuit lines on the same tower and help to improve the success rate of automatic reclosure of double-circuit lines Coincides with the impact of permanent faults on the safe and stable operation of the grid.