| 基于电压比较的牵引供电系统异相短路保护 |
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| 引用本文： | 李辉,李钢,安林,马继政.基于电压比较的牵引供电系统异相短路保护[J].江苏电机工程,2011,30(2):38-40,44. |
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| 作者姓名： | 李辉 李钢 安林 马继政 |
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| 作者单位： | 国电南瑞科技股份有限公司,江苏,南京,210061 |
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| 摘 要： | 首先通过测量阻抗轨迹法对异相短路故障的测量阻抗的进行分析,得出牵引网发生异相高阻电弧短路故障时,常规原理的阻抗保护将拒动的结论.在异相短路故障特性的基础上,利用电压向量图法对故障电压进行了分析,发现两供电臂电压和相间电压的幅值和相位发生有规律的变化,根据电压变化特征,建立了基于两供电臂电压和相间电压的相关比较,同时结合...
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| 关 键 词： | 阻抗轨迹法 异相短路 电压向量图法 电分相绝缘器 |
Protection Against Wrong-phase-coupling of Traction Power Supply System Based on Comparison of Voltage |
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| LI Hui,LI Gang,AN Lin,MA Ji-zheng.Protection Against Wrong-phase-coupling of Traction Power Supply System Based on Comparison of Voltage[J].Jiangsu Electrical Engineering,2011,30(2):38-40,44. |
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| Authors: | LI Hui LI Gang AN Lin MA Ji-zheng |
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| Affiliation: | LI Hui,LI Gang,AN Lin,MA Ji-zheng(NARI Technology Development Limited Company,Nanjing 210061,China) |
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| Abstract: | Conventional impedance relay will refuse to trip according to an analysis of measuring impedance by means of impedance locus method when wrong-phase-coupling of traction power supply system occurs.Based on the characteristics of wrong-phase-coupling faults,by means of voltage vector diagram,variations of two power supply voltage and phase voltage are regular.According to this feature combined with current incremental protection,a new protection scheme is developed.The existing simulation results and the ana... |
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| Keywords: | power traction system wrong-phase-coupling voltage vector diagram phase insulator |
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