±535kV高压直流断路器绝缘试验分析

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI:10.1109/ICEPE-ST.2019.8928718

Chen Liu, Qiang Li, C. Su, Meng Shen, Yongcheng Wang, Xingping Gou, Xiaoyan Guo

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引用次数: 3

摘要

介绍了张北柔性直流输电工程用±535kV机械高压直流断路器的绝缘试验。首先，分析了主支路、转换支路、耗能支路和缓冲支路各支路的荷载特性，并提出了具体的试验项目;然后，分析了DCCB的测试电路和耐雷击电压布置，讨论了DCCB的开关过电压和测试波形。最后对直流局部放电的长期测量和特性进行了分析。本文还讨论了在具体测试中遇到的一些问题和解决方案。

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±535kV High Voltage DC Circuit Breaker Insulation Test Analysis

This paper introduces insulation tests of a ±535kV mechanical high voltage DC circuit breaker, which is used for Zhangbei flexile DC transmission project. First, the load characteristics of each branch were analyzed, including main branch, transfer branch, energy dissipation branch and buffer branch, and the specific test items were proposed. Then, the test circuit and arrangement of lightning impulse withstand voltage were analyzed, switching overvoltage and test waveform of DCCB were also discussed. At last, long-term DC partial discharge measurement and characteristics were analyzed. This article also discussed some problems and solutions encountered in specific tests.

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来源期刊

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)

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