苏州-上海特高压线路断路器不装合闸电阻的可行性研究

doi:10.11930/j.issn.1004-9649.2016.03.059.06

摘要/Abstract

摘要： 为节省工程投资、提高断路器的运行可靠性，分析了交流特高压线路断路器不装合闸电阻的可行性，提出了取消特高压线路断路器合闸电阻的判据。通过分析指出取消特高压线路断路器合闸电阻的难度比500 kV工程大，但仍是有可能的。采用EMTP程序建立仿真计算模型，模拟计算了苏州—上海特高压线路断路器取消合闸电阻后的合闸和单相重合闸过电压、波前时间及线路闪络率。依据计算结果，并基于取消合闸电阻的判据，提出苏州侧线路断路器应装设合闸电阻，而上海侧可以考虑不装合闸电阻。

关键词: 特高压, 断路器, 合闸电阻, 过电压, 波前时间, 闪络率

Abstract: To save the project investment and improve the reliability of the breakers, the feasibility of the AC UHV line-breaker without closing resistor is analyzed, and the criteria of canceling UHV line-breaker closing resistor are put forward. It is pointed out through analysis that the difficulty of canceling UHV line-breaker closing resistor is bigger than that in the 500 kV project, but it is still possible. The simulation model is built by EMTP program to calculate, the closing and single phase reclosing overvoltage, the time to crest and the line flashover rate of the Suzhou-Shanghai UHV line-breaker without closing resistor. Based on the calculation results and the criteria, it is suggested that the closing resistor be installed in the line-breakers at Suzhou side , but not at Shanghai side.

Key words: UHV, breaker, closing resistor, overvoltage, time to crest, flashover rate

中图分类号:

TM561

李振强，王红超，何慧雯，何樱. 苏州-上海特高压线路断路器不装合闸电阻的可行性研究[J]. 中国电力, 2016, 49(3): 59-64.

LI Zhenqiang, WANG Hongchao, HE Huiwen, HE Ying. Feasibility Research on Line Circuit Breaker Without Closing Resistor of Suzhou-Shanghai UHV Transmission Project[J]. Electric Power, 2016, 49(3): 59-64.

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https://www.electricpower.com.cn/CN/Y2016/V49/I3/59

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