文章摘要
阮思烨,徐凯,刘丹,等.直流输电系统换相失败统计分析及抵御措施建议[J].电力系统自动化,2019,43(18):13-17. DOI: 10.7500/AEPS20190130006.
RUAN Siye,XU Kai,LIU Dan, et al.Statistical Analysis and Suggestions on Resistance Measures for Commutation Failures of HVDC Transmission System[J].Automation of Electric Power Systems,2019,43(18):13-17. DOI: 10.7500/AEPS20190130006.
直流输电系统换相失败统计分析及抵御措施建议
Statistical Analysis and Suggestions on Resistance Measures for Commutation Failures of HVDC Transmission System
DOI:10.7500/AEPS20190130006
关键词: 高压直流  换相失败  统计分析  抵御措施
KeyWords: high-voltage direct current(HVDC)  commutation failure  statistical analysis  resistance measures
上网日期:2019-08-05
基金项目:国家电网公司科技项目(SGRIZLKJ〈2017〉136)“抵御多馈入换相失败换流阀智能监测控制系统应用关键技术研究”
作者单位E-mail
阮思烨 国家电网有限公司, 北京市 100031  
徐凯 国家电网有限公司, 北京市 100031 xu-kai@sgcc.com.cn 
刘丹 国家电网有限公司, 北京市 100031  
吕鹏飞 国家电网有限公司, 北京市 100031  
王德林 国家电网有限公司, 北京市 100031  
王华锋 全球能源互联网研究院有限公司, 北京市 102209  
摘要:
      随着特高压直流工程不断投运、换流容量不断增加,换相失败对电网产生的有功、无功冲击更加严峻,严重威胁大电网安全稳定运行。文中对国家电网有限公司21个在运直流输电系统换相失败发生情况进行了统计分析,总结归纳换相失败发生概率的主要影响因素。基于统计分析结论,从降低换相失败概率和减小换相失败后能量冲击两方面,提出晶闸管关断特性优化、换流阀换相失败智能监测控制和换相失败后能量吸收等技术措施,为换相失败抵御措施的进一步研究和工程应用提供参考。
Abstract:
      With the continuous operation of ultra-high voltage direct current(UHVDC)project and the increase of commutation capacity, the impact of commutation failure on the active and reactive power of power grid is more severe, which seriously threatens the safe and stable operation of large power grid. This paper makes a statistical analysis of commutation failures in 21 high-voltage direct current(HVDC)transmission systems of the State Grid Corporation of China and summarizes the main factors affecting the probability of commutation failures. Based on the conclusion of statistical analysis, from two aspects of reducing the probability of commutation failure and energy shock, some technical measures such as optimization of thyristor switching characteristics, intelligent monitoring control of commutation failure of converter valve and energy absorption after commutation failure, are put forward, which can provide reference for further research and engineering application of resistance measures for commutation failure.
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