一种基于直流断路器两端电压的混合级联多端直流输电断路器自适应重合闸方法
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摘要
混合级联多端直流输电技术是未来特高压直流输电的重要发展方向之一,其重合闸策略是关系到直流系统能否可靠运行的重要因素。首先分析了混合级联多端直流输电直流线路故障特征,进而研究了组合式直流断路器在混合级联多端直流输电中的应用,在此基础上提出了基于直流断路器两端电压的直流断路器自适应重合闸方法,并在PSCAD/EMTDC上搭建含有组合式直流断路器的混合级联多端直流输电典型模型,对重合闸策略进行了验证。
Hybrid cascade multi-terminal HVDC technology is one of the important development directions of UHVDC transmission in the future, and its reclosure strategy is an important factor related to reliable operation of HVDC system. Firstly, the fault characteristics of hybrid cascade multi-terminal HVDC transmission lines are analyzed, and then the application of combined HVDC circuit breaker in hybrid cascade multi-terminal HVDC transmission is studied. On this basis, an adaptive reclosure method of DC circuit breaker based on the voltages at both ends of DC circuit breaker is proposed. A typical hybrid cascade multi-terminal DC transmission model with composite DC circuit breakers is built on PSCAD/EMTDC, and the reclosure strategy is verified.
Hybrid cascade multi-terminal HVDC technology is one of the important development directions of UHVDC transmission in the future, and its reclosure strategy is an important factor related to reliable operation of HVDC system. Firstly, the fault characteristics of hybrid cascade multi-terminal HVDC transmission lines are analyzed, and then the application of combined HVDC circuit breaker in hybrid cascade multi-terminal HVDC transmission is studied. On this basis, an adaptive reclosure method of DC circuit breaker based on the voltages at both ends of DC circuit breaker is proposed. A typical hybrid cascade multi-terminal DC transmission model with composite DC circuit breakers is built on PSCAD/EMTDC, and the reclosure strategy is verified.
引文
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[16]刘杉,余军,贺之渊,等.基于VSC与LCC混合的多点传输直流输电系统拓扑结构研究与特性分析[J].中国电机工程学报,2018,38(10):2980-2988.Liu Shan,Yu Jun,He Zhiyuan,et al.Research on the topology and characteristic of multi-terminal HVDC based on VSC and LCC[J].Proceedings of the CSEE,2018,38(10):2980-2988(in Chinese).
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[18]彭发喜,汪震,邓银秋,等.混合式直流断路器在柔性直流电网中应用初探[J].电网技术,2017,41(7):2092-2098.Peng Faxi,Wang Zhen,Deng Yinqiu,et al.Potentials of hybrid HVDC circuit breakers application to MMC-HVDC grid[J].Power System Technology,2017,41(7):2092-2098(in Chinese).
[2]徐政等.柔性直流输电系统[M].北京:机械工业出版社,2017:70-99.
[3]徐政,王世佳,李宁璨,等.适用于远距离大容量架空线路的LCC-MMC串联混合型直流输电系统[J].电网技术,2016,40(1):55-63.Xu Zheng,Wang Shijia,Li Ningcan,et al.A LCC and MMC series hybrid HVDC topology suitable for bulk power over head line transmission[J].Power System Technology,2016,40(1):55-63(in Chinese).
[4]张保会,电力系统继电保护[M].北京:中国电力出版社,2006:12-13.
[5]赵成勇,李探,俞露杰.MMC-HVDC直流单极接地故障分析与换流站故障恢复策略[J].中国电机工程学报,2014,34(21):3518-3526.Zhao Chengyong,Li Tan,Yu Lujie.DC pole-to-ground fault characteristic analysis and converter fault recovery strategy of MMC-HVDC[J].Proceedings of the CSEE,2014,34(21):3518-3526(in Chinese).
[6]韩亮,白小会,陈波,等.张北±500kV柔性直流电网换流站控制保护系统设计[J].电力建设,2017,38(3):42-47.Han Liang,Bai Xiaohui,Chen Bo,et al.Control and protection system design of Zhangbei±500kV converter station in VSC-HVDCpower grid[J].Electric Power Construction,2017,38(3):42-47(in Chinese).
[7]张峻榤,向往,林卫星,等.基于混合型MMC和直流开关的柔性直流电网直流故障保护研究[J].电力建设,2017,38(8):52-58.Zhang Junjie,Xiang Wang,Lin Weixing,et al.DC fault protection of VSC-HVDC grid based on hybrid MMC and DC switch[J].Electric Power Construction,2017,38(8):52-58(in Chinese).
[8]王一,刘建政.用于MMC-HVDC直流故障保护的新型拓扑及重合闸控制策略[J].电网技术,2015,39(8):2312-2319.Wang Yi,Liu Jianzheng.An enhanced MMC-HVDC topology and system recovery strategy for DC fault protection[J].Power System Technology,2015,39(8):2312-2319(in Chinese).
[9]李斌,何佳伟,李晔,等.柔性直流输电系统新型故障重启方法[J].电力系统自动化,2017,41(12):77-85,167.Li Bin,He Jiawei,Li Ye,et al.Novel restart scheme of DC fault for flexible DC transmission system[J].Automation of Electric Power Systems,2017,41(12):77-85,167(in Chinese).
[10]宋国兵,王婷,张晨浩,等.利用全桥MMC注入特征信号的直流自适应重合闸方法[J].电网技术,2019,43(1):149-156.Song Guobing,Wang Ting,Zhang Chenhao,et al.Adaptive auto-reclosing of DC line based on characteristic signal injection with FB-MMC[J].Power System Technology,2019,43(1):149-156(in Chinese).
[11]王帅,毕天姝,李伟,等.MMC-MTDC线路双极永久性故障快速识别方法研究[J].可再生能源,2017,35(1):43-49.Wang Shuai,Bi Tianshu,Li Wei,et al.A fast bipolar permanent fault identification approach for MMC-MTDC lines[J].Renewable Energy Resources,2017,35(1):43-49(in Chinese).
[12]王帅,毕天姝,贾科.基于主动脉冲的MMC-HVDC单极接地故障测距[J].电工技术学报,2017,32(1):12-19.Wang Shuai,Bi Tianshu,Jia Ke.Single terminal fault location for MMC-HVDC transmission line using active pulse[J].Transactions of China Electrotechnical Society,2017,32(1):12-19(in Chinese).
[13]Li Tan,Zhao Chengyong.Recovering the modular multi-level converter from a cleared or isolated fault[J].The Institution of Engineering and Technology,2015,9(6):550-559.
[14]丁骁,汤广福,韩民晓,等.柔性直流电网用混合式高压直流断路器特征参数提取及应用[J].中国电机工程学报,2018,38(1):309-319.Ding Xiao,Tang Guangfu,Han Minxiao,et al.Characteristic parameters extraction and application of the hybrid DC circuit breaker in MMC-HVDC[J].Proceedings of the CSEE,2018,38(1):309-319(in Chinese).
[15]周猛,左文平,林卫星,等.电容换流型直流断路器及其在直流电网的应用[J].中国电机工程学报,2017,37(4):93-101.Zhou Meng,Zuo Wenping,Lin Weixing,et al.Capacitor commutated DC circuit breaker and its application in DC grid[J].Proceedings of the CSEE,2017,37(4):93-101(in Chinese).
[16]刘杉,余军,贺之渊,等.基于VSC与LCC混合的多点传输直流输电系统拓扑结构研究与特性分析[J].中国电机工程学报,2018,38(10):2980-2988.Liu Shan,Yu Jun,He Zhiyuan,et al.Research on the topology and characteristic of multi-terminal HVDC based on VSC and LCC[J].Proceedings of the CSEE,2018,38(10):2980-2988(in Chinese).
[17]魏晓光,杨兵建,汤广福.高压直流断路器技术发展与工程实践[J].电网技术,2017,41(10):3180-3188.Wei Xiaoguang,Yang Bingjian,Tang Guangfu.Technical development and engineering applications of HVDC circuit breaker[J].Power System Technology,2017,41(10):3180-3188(in Chinese).
[18]彭发喜,汪震,邓银秋,等.混合式直流断路器在柔性直流电网中应用初探[J].电网技术,2017,41(7):2092-2098.Peng Faxi,Wang Zhen,Deng Yinqiu,et al.Potentials of hybrid HVDC circuit breakers application to MMC-HVDC grid[J].Power System Technology,2017,41(7):2092-2098(in Chinese).