电工技术学报  2020, Vol. 35 Issue (7): 1454-1463    DOI: 10.19595/j.cnki.1000-6753.tces.190759
电力系统 |
基于电压波形拟合的换相失败快速预测与抑制措施
王增平1, 刘席洋1, 郑博文1, 李永光2
1. 新能源电力系统国家重点实验室(华北电力大学) 北京 102206;
2. 国网北京市电力公司 北京 100031
The Research on Fast Prediction and Suppression Measures of Commutation Failure Based on Voltage Waveform Fitting
Wang Zengping, Liu Xiyang, Zheng Bowen, Li Yongguang
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China;
2. State Grid Beijing Power Supply Company Beijing 100031 China
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摘要 为减少高压直流输电系统换相失败的发生概率,从换相失败机理出发,提出了一种基于电压波形拟合的换相失败快速预测与抑制措施。首先,以换相电压-时间面积为理论基础,推导出换相需求面积和可供应最小换相面积的数学解析并以此为换相失败预测判据,通过三点法对故障前后电压波形进行拟合,从而实现所提换相失败预测方法的实时量化分析。然后,提出一种基于临界换相面积的提前触发控制策略,可根据临界换相面积动态变化来调节提前触发的角度。最后,基于CIGRE标准测试模型的仿真结果表明,所提方法不但可以实现换相失败的快速预测,同时还能在一定程度上抑制换相失败的发生,改善系统的故障恢复性能。
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王增平
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关键词 高压直流输电换相失败换相面积曲线拟合提前触发    
Abstract:In order to reduce the probability of commutation failure of HVDC transmission system, a commutation failure fast prediction and suppression measure based on voltage waveform fitting is proposed. Firstly, based on the theory of commutation voltage-time area, the mathematical analysis of the commutation demand area and the minimum supplied area can be derived and used as the commutation failure prediction criterion. The voltage waveform before and after the fault is fitted by the three-point method, therefore realizing real-time quantitative analysis of the proposed commutation failure prediction method. Then, an advanced firing control strategy based on the critical commutation area is proposed, and the angle of the advanced firing can be adjusted according to the dynamic change of the critical commutation area. Finally, the simulation results based on the CIGRE standard test model show that the proposed method can not only achieve fast prediction of commutation failure, but also suppress the occurrence of commutation failure to some extent and improve the system's fault recovery performance.
Key wordsHVDC transmission    commutation failure    commutation area    curve fitting    advanced firing   
收稿日期: 2019-06-25      出版日期: 2020-04-07
PACS: TM721.1  
基金资助:国家重点研发计划智能电网技术与装备重点专项(2016YFB0900604)、国家自然基金重点项目(51637005)和国家电网公司科技项目(52094017000W)资助
通讯作者: 刘席洋 男,1991年生,博士研究生,研究方向为换相失败、交直流系统交互机理等。E-mail:ncepulxy@126.com   
作者简介: 王增平 男,1964年生,教授,博士生导师,研究方向为继电保护、变电站综合自动化、系统安全保护等。E-mail:wangzp1103@sina.com
引用本文:   
王增平, 刘席洋, 郑博文, 李永光. 基于电压波形拟合的换相失败快速预测与抑制措施[J]. 电工技术学报, 2020, 35(7): 1454-1463. Wang Zengping, Liu Xiyang, Zheng Bowen, Li Yongguang. The Research on Fast Prediction and Suppression Measures of Commutation Failure Based on Voltage Waveform Fitting. Transactions of China Electrotechnical Society, 2020, 35(7): 1454-1463.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.190759          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I7/1454