| 引用本文: | 宋丽群,徐波,韩笑.考虑串补电容的超高压输电线路暂态保护判据研究[J].电力自动化设备,2005,(1):37-39 |
| .Research of protection criterion for EHV transmission line with compensating series capacitor[J].Electric Power Automation Equipment,2005,(1):37-39 |
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| 摘要: |
| 超高压输电线路发生故障时，线路上的串补电容及其保护回路都将在故障时产生附加的暂态分量，利用同一时间段内不同频率分量的衰减程度不同区分区内、区外故障或利用高频暂态量电流信号奇异点(突变点)的奇异性区分区内、区外故障的单端暂态量保护判据，并不适用于带有串联补偿电容的输电线路。给出了一种适用于带有串补电容的输电线路暂态保护新判据．并通过理论分析及算例仿真，证明了其可行性。 |
| 关键词: 超高压 串补电容 单端暂态量保护 保护判据 |
| DOI： |
| 分类号:TM711 |
| 基金项目: |
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| Research of protection criterion for EHV transmission line with compensating series capacitor |
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SONG Li-qun XU Bo HAN Xiao
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| Abstract: |
| When fault occurs on EHV(Extra High Voltage) transmission lines,the compensating seriescapacitor and its protective circuit on the lines will cause additional transient components. The non-unit transient-based protection criterion,which uses the energy descent rates of different fre-quencies during a certain period or the Lipschiz degree at singularity point to distinguish internal and external faults,is inapplicable to EHV transmission line with compensating series capacitors.Thus a new transient-based protection criterion for EHV transmission lines with compensating series capacitors is provided. The theoretic analysis and simulative results show that the proposed method is feasible. |
| Key words: EHV,compensating series capacitor,non-unit transient protection,protection criterion |
