利用全桥MMC注入特征信号的直流自适应重合闸方法
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摘要
交流线路自适应重合闸利用健全相和跳开相之间的耦合关系进行永久性故障性质判别,考虑到直流线路故障清除后,健全极与故障极无耦合关系,并充分利用换流器的高可控性,提出了一种向直流故障线路注入特征信号的故障性质判别方法。首先详细阐述了特征信号的选取原则、特征信号的产生原理与调节;其次通过附加控制策略向直流故障线路注入特征信号,利用该特征信号在故障线路和健全线路的传播特性差异进行故障性质判别,仿真结果验证了文中提出利用全桥换流器注入特征信号判别故障性质方法的有效性。
Electrical coupling between transmission lines is the premise of single-/three-phase adaptive reclosing. Considering the relationship between DC transmission lines in steady state, this paper presents a method injecting characteristic signal to a faulty DC line to identify fault property, making full use of the control characteristics of full bridge based converter without circuit breaker. The problem of non-selective restart of current HVDC transmission is solved. In this paper, the selection principle of characteristic signals, and the principle and regulation of the characteristic signal are analyzed in detail. Then, a characteristic signal is injected into the DC faulty line according to additional control strategy and the fault property is discriminated based on the propagation characteristics of the faulty line and the healthy line. Simulation results verify validity of the method distinguishing the fault properties by injecting characteristic signal using full bridge based converter.
Electrical coupling between transmission lines is the premise of single-/three-phase adaptive reclosing. Considering the relationship between DC transmission lines in steady state, this paper presents a method injecting characteristic signal to a faulty DC line to identify fault property, making full use of the control characteristics of full bridge based converter without circuit breaker. The problem of non-selective restart of current HVDC transmission is solved. In this paper, the selection principle of characteristic signals, and the principle and regulation of the characteristic signal are analyzed in detail. Then, a characteristic signal is injected into the DC faulty line according to additional control strategy and the fault property is discriminated based on the propagation characteristics of the faulty line and the healthy line. Simulation results verify validity of the method distinguishing the fault properties by injecting characteristic signal using full bridge based converter.
引文
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[8]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 Weixin, 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).
[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).
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[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 We, 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]梁振锋,索南加乐,宋国兵,等.输电线路自适应重合闸研究综述[J].电力系统保护与控制,2013, 41(6):140-147.Liang Zhenfeng,Suonan Jiale,Song Guobing,et al. Research review of adaptive reclosure in transmission lines[J]. Power System Protection and Control, 2013, 41(6):140-147(in Chinese).
[14]郭晓茜,崔翔,齐磊.架空线双极MMC-HVDC系统直流短路故障分析和保护[J].中国电机工程学报,2017, 37(8):2177-2185.Guo Xiaoqian, Cui Xiang, QiLei. DC short-circuit fault analysis and protection for the overhead line bipolar MMC-HVDC system[J]. Proceedings of the CSEE, 2017, 37(8):2177-2185(in Chinese).
[15]李少华,王秀丽,李泰,等.混合式MMC及其直流故障穿越策略优化[J].中国电机工程学报,2016,36(7):1849-1858.Li Shaohua,Wang Xiuli,Li Tai, et al. Optimal design for hybrid MMC and its DC fault ride-through strategy[J]. Proceedings of the CSEE, 2016, 36(7):1849-1858(in Chinese).
[16]张峻榤,向往,饶宏,等.含直流断路器的架空柔性直流电网直流故障保护方案研究[J/OL].中国电机工程学报:1-15.[2018-06-26]. http://kns.cnki.net/kns/brief/default_result.aspx.Zhang Junjie, Xiang Wang, Rao Hong, et, al. Research on DC faultprotection scheme of overhead MMC based DC grid with DC circuit breaker[J/OL]. Proceedings of the CSEE:1-15.[2018-06-26]. http://kns.cnki.net/kns/brief/default_result.aspx(in Chinese).
[17]徐政.柔性直流输电系统[M]. 2版.北京:机械工业出版社,2016:457-463.
[18]姚为正,行登江,吴金龙,等.柔性直流电网超高速保护方案研究[J].电网技术,2017, 41(6):1710-1718.Yao Weizheng, Xing Dengjiang, Wu Jinlong,et al. Study on ultra-high-speed protection method of flexible HVDC grid[J]. Power System Technology, 2017, 41(6):1710-1718(in Chinese).
[19] Park J,Candelaria J,Ma L,et al. DC ring-bus microgrid fault protection and identification of fault location[J]. IEEE Transactions on Power Delivery, 2013, 28(4):2574-2584.
[20]孙栩,陈绍君,黄霆,等.±500 kV架空线柔性直流电网操作过电压研究[J].电网技术,2017,41(5):1498-1502.Sun Xu, Chen Shaojun, Huang Ting, et al. Switching overvoltage research of±500 kV flexible HVDC grid with overhead line[J]. Power System Technology,2017,41(5):1498-1502(in Chinese).
[21]韩坤,吴金龙,刘欣和,等.大规模多节点模块化多电平柔性直流输电换流阀控制周期优化设计方法[J].电力自动化设备,2015,35(1):36-43.Han Kun, Wu Jinlong, Liu Xinhe, et al. Optimized design of converter valve control period for large-scale multi-node MMC-based HVDCflexible[J].Electric Power Automation Equipment,2015,35(1):36-43(in Chinese).
[22]赵刚,朱旭东,陈文针.变压器冲击试验结果的波形相关系数判别法[J].高电压技术,2002,28(2):1-2.Zhao Gang, Zhu Xuwen, Chen Wenzhen. Correlation factor criterion for analysis of transformer impulse test result[J]. High Voltage Engineering,2002,28(2):1-2(in Chinese).
[2]赵成勇,许建中,李探.全桥型MMC-MTDC直流故障穿越能力分析[J].中国科学:技术科学,2013, 43(1):106-114.Zhao Chenyong, Xu Jianzhong,Li Tan. DC faults ride-through capability analysis of full-bridge MMC-MTDC system[J]. Scientia Sinica(Technologica),2013,43(1):106-114(in Chinese).
[3]孟新涵,李可军,王卓迪,等.混合型MMC拓扑及应用于MTDC直流故障穿越能力分析[J].电力系统自动化,2015, 39(24):72-79.Meng Xinhan, Li Kejun, Wang Zhuodi, et al. A hybrid MMC topology and its DC fault ride-through capability analysis when applied to MTDC system[J]. Automation of Electric Power Systems,2015,39(24):72-79(in Chinese).
[4]和敬涵,黄威博,李海英,等.FBMMC直流故障穿越机理及故障清除策略[J].电力自动化设备,2017, 37(10):1-7.He Jinghan, Huang Weibo, Li Haiying, et al. FBMMC DC fault ride-through mechanism and fault clearing strategy[J]. Electric Power Automation Equipment, 2017,37(10):1-7(in Chinese).
[5]刘欣和,吴金龙,郭宁宁,等.直流故障下全桥型多电平换流器模块电压分析[J].高压电器,2016,52(5):101-108.Liu Xinhe, Wu Jinlong, Guo Ningning, et, al. Analysis of submodule capacitor voltage caused by DC pole-to-pole fault in FBMMC HVDC system[J]. High Voltage Apparatus,2016,52(5):101-108(in Chinese).
[6]张保会,电力系统继电保护[M].北京:中国电力出版社,2006:12-13.
[7]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-HVDC power grid[J]. Electric Power Construction, 2017, 38(3):42-47(in Chinese).
[8]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 Weixin, 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).
[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]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).
[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 We, 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]梁振锋,索南加乐,宋国兵,等.输电线路自适应重合闸研究综述[J].电力系统保护与控制,2013, 41(6):140-147.Liang Zhenfeng,Suonan Jiale,Song Guobing,et al. Research review of adaptive reclosure in transmission lines[J]. Power System Protection and Control, 2013, 41(6):140-147(in Chinese).
[14]郭晓茜,崔翔,齐磊.架空线双极MMC-HVDC系统直流短路故障分析和保护[J].中国电机工程学报,2017, 37(8):2177-2185.Guo Xiaoqian, Cui Xiang, QiLei. DC short-circuit fault analysis and protection for the overhead line bipolar MMC-HVDC system[J]. Proceedings of the CSEE, 2017, 37(8):2177-2185(in Chinese).
[15]李少华,王秀丽,李泰,等.混合式MMC及其直流故障穿越策略优化[J].中国电机工程学报,2016,36(7):1849-1858.Li Shaohua,Wang Xiuli,Li Tai, et al. Optimal design for hybrid MMC and its DC fault ride-through strategy[J]. Proceedings of the CSEE, 2016, 36(7):1849-1858(in Chinese).
[16]张峻榤,向往,饶宏,等.含直流断路器的架空柔性直流电网直流故障保护方案研究[J/OL].中国电机工程学报:1-15.[2018-06-26]. http://kns.cnki.net/kns/brief/default_result.aspx.Zhang Junjie, Xiang Wang, Rao Hong, et, al. Research on DC faultprotection scheme of overhead MMC based DC grid with DC circuit breaker[J/OL]. Proceedings of the CSEE:1-15.[2018-06-26]. http://kns.cnki.net/kns/brief/default_result.aspx(in Chinese).
[17]徐政.柔性直流输电系统[M]. 2版.北京:机械工业出版社,2016:457-463.
[18]姚为正,行登江,吴金龙,等.柔性直流电网超高速保护方案研究[J].电网技术,2017, 41(6):1710-1718.Yao Weizheng, Xing Dengjiang, Wu Jinlong,et al. Study on ultra-high-speed protection method of flexible HVDC grid[J]. Power System Technology, 2017, 41(6):1710-1718(in Chinese).
[19] Park J,Candelaria J,Ma L,et al. DC ring-bus microgrid fault protection and identification of fault location[J]. IEEE Transactions on Power Delivery, 2013, 28(4):2574-2584.
[20]孙栩,陈绍君,黄霆,等.±500 kV架空线柔性直流电网操作过电压研究[J].电网技术,2017,41(5):1498-1502.Sun Xu, Chen Shaojun, Huang Ting, et al. Switching overvoltage research of±500 kV flexible HVDC grid with overhead line[J]. Power System Technology,2017,41(5):1498-1502(in Chinese).
[21]韩坤,吴金龙,刘欣和,等.大规模多节点模块化多电平柔性直流输电换流阀控制周期优化设计方法[J].电力自动化设备,2015,35(1):36-43.Han Kun, Wu Jinlong, Liu Xinhe, et al. Optimized design of converter valve control period for large-scale multi-node MMC-based HVDCflexible[J].Electric Power Automation Equipment,2015,35(1):36-43(in Chinese).
[22]赵刚,朱旭东,陈文针.变压器冲击试验结果的波形相关系数判别法[J].高电压技术,2002,28(2):1-2.Zhao Gang, Zhu Xuwen, Chen Wenzhen. Correlation factor criterion for analysis of transformer impulse test result[J]. High Voltage Engineering,2002,28(2):1-2(in Chinese).