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投稿时间：2018-04-18
投稿时间：2018-04-18
中文摘要: 单相接地故障消除之后，相控式消弧线圈应退出运行，不再输出补偿电流，中性点电压恢复至正常状态。但在某变电站的录波记录中发现，系统中性点电压呈现出低频振荡的现象。为此，采用电工学的基本原理，分析了产生低频振荡的原因，并通过PSCAD/EMTDC仿真证实了该理论分析的结果。最后，提出了抑制低频振荡的措施。
Abstract:After a single-phase-to-ground fault is eliminated,the phase-controlled arc suppression coil should exit without any compensation currents.Then,the neutral voltage will return to normal state.However,the phenomenon of low-frequency oscillation of the neutral voltage is found in the recording of a substation.For this reason,the basic circuit principles are adopted,the causes of low frequency oscillation are analyzed,and the suppression methods are put forward.Finally,the theoretical analysis is verified through PSCAD/EMTDC simulation.
keywords: phase-controlled arc suppression coil single-phase-to-ground fault resonant grounding oscillation of the neutral voltage
文章编号：20194008 中图分类号：TM773 文献标志码：
基金项目:上海高校青年教师培养资助计划（ZZsdl15092）；上海电力学院人才引进基金（K2014-044）。
| 作者 | 单位 | |
| 徐波 | 上海电力学院 | xubo@shiep.edu.cn |
| 彭耀辉 | 上海电力学院 | |
| 蔡翔 | 上海蓝瑞电气有限公司 |
引用文本：
徐波,彭耀辉,蔡翔.相控式消弧线圈退出后电压振荡现象分析[J].上海电力大学学报,2019,35(4):345-348,366.
XU Bo,PENG Yaohui,CAI Xiang.Analysis of Voltage Oscillation after the Phase-controlled Arc Suppression Coil Exiting[J].Journal of Shanghai University of Electric Power,2019,35(4):345-348,366.
徐波,彭耀辉,蔡翔.相控式消弧线圈退出后电压振荡现象分析[J].上海电力大学学报,2019,35(4):345-348,366.
XU Bo,PENG Yaohui,CAI Xiang.Analysis of Voltage Oscillation after the Phase-controlled Arc Suppression Coil Exiting[J].Journal of Shanghai University of Electric Power,2019,35(4):345-348,366.