应对多馈入直流换相失败的综合防御研究
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摘要
随着多馈入直流格局的形成,系统安全稳定控制难度也随之增大。发生严重交直流故障时,存在多直流同时换相失败使系统失去稳定的风险,因此避免直流换相失败和维持受端电压稳定,是目前多馈入直流受端系统控制措施需要解决的重要问题。研究了多馈入直流换相失败的电网特性和影响因素,从三道防线角度研究提出应对多馈入直流换相失败导致的电压失稳的控制策略。基于实际电网进行仿真验证,所提出的控制策略可降低多馈入直流换相失败风险、提高受端电网电压稳定水平。
With the formation of multi-infeed HVDC,the difficulty of security and stability control of the system increases. The commutation failure in multi-circuit HVDC power transmission system will bring the system risk of losing stability when serious AC/DC fault occurs,therefore,avoiding commutation failure in HVDC power transmission system and maintaining voltage stability of receiving end power grid,are currently important problems that receiving end power grid takes control measures need to be solved. The power grid characteristics of multi-infeed HVDC and influence factors that lead to communication failure are analyzed in this paper,and the control strategy of voltage instability that formation of multi-infeed HVDC leads to is put forward in the sight of the three defense lines. Based on the simulation of the actual power grid,the proposed control strategy can effectively reduce the risk of commutation failure in multi-circuit HVDC and improve the voltage stability level of receiving end power grid.
With the formation of multi-infeed HVDC,the difficulty of security and stability control of the system increases. The commutation failure in multi-circuit HVDC power transmission system will bring the system risk of losing stability when serious AC/DC fault occurs,therefore,avoiding commutation failure in HVDC power transmission system and maintaining voltage stability of receiving end power grid,are currently important problems that receiving end power grid takes control measures need to be solved. The power grid characteristics of multi-infeed HVDC and influence factors that lead to communication failure are analyzed in this paper,and the control strategy of voltage instability that formation of multi-infeed HVDC leads to is put forward in the sight of the three defense lines. Based on the simulation of the actual power grid,the proposed control strategy can effectively reduce the risk of commutation failure in multi-circuit HVDC and improve the voltage stability level of receiving end power grid.
引文
[1]刘振亚.中国电力与能源[M].北京:中国电力出版社,2012:65-70.Liu Zhenya. China power and energy[M]. Beijing:China Electric Power press,2012:65-70.
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[4]张文亮,于永清,李光范,等.特高压直流技术研究[J].中国电机工程学报,2007,27(22):1-7.Zhang Wenliang,Yu Yongqing,Li Guangfan,et al. Researches on UHVDC technology[J]. Proceedings of the CSEE,2007,27(22):1-7.
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[7]郭小江,马世英,卜广全,等.多馈入直流系统协调控制综述[J].电力系统自动化,2009,33(3):9-15.Guo Xiaojiang,Ma Shiying,Bu Guangquan,et al. Survey on coordinated control of multi-infeed dc systems[J]. Automation of Electric Power Systems,2009,33(3):9-15.
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[9]张晋华,蒋卫平,印永华,等.特高压规划电网安全稳定性研究[J].中国电机工程学报,2008,28(22):64-68.Zhang Jinhua,Jiang Weiping,Yin Yonghua,et a1. Security and stability study on planned ultra high voltage power grid[J]. Proceedings of the CSEE,2008,28(22):64-68.
[10]汪隆君,王钢,李海锋,等.交流系统故障诱发多直流馈入系统换相失败风险评估[J].电力系统自动化,2011,35(3):9-14.Wang Longjun,Wang Gang,Li Haifeng,et al. Risk evaluation of commutation failure in multi-infeed HVDC system under AC system fault conditions[J]. Automation of Electric Power Systems,2011,35(3):9-14.
[11]项玲,郑建勇,胡敏强.多端和多馈入直流输电系统中换相失败的研究[J].电力系统自动化,2005,29(11):29-33.Xiang Ling,Zheng Jianyong,Hu Minqiang. Study on commutation failure in MTDC and MIDDC systems[J]. Automation of Electric Power Systems,2005,29(11):29-33.
[12]王晶,梁志峰,江木,等.多馈入直流同时换相失败案例分析及仿真计算[J].电力系统自动化,2015,39(4):141-146.Wang Jing,Liang Zhifeng,Jiang Mu,et al. Case analysis and simulation failure in multi-infeed HVDC transmission systems[J]. Automation of Electric Power Systems,2015,39(4):141-146.
[13]郑超.直流逆变站电压稳定测度指标及紧急控制[J].中国电机工程学报,2015,35(2):344-352.Zheng Chao. Voltage stability index of HVDC inverter station and emergency control strategy[J]. Proceedings of the CSEE,2015,35(2):344-352.
[14]杨卫东,薛禹胜,荆勇,等.南方电网中多个直流系统间的协调功率恢复策略[J].电力系统自动化,2003,27(15):67-70.Yang Weidong,Xue Yusheng,Jing Yong,et al. A coordinated recovery strategy for 3 HVDC systems involved in the South China power grid[J]. Automation of Electric Power Systems,2003,27(15):67-70.
[15]李鹏,郝治国,张保会,等.一种防止电压失稳的切负荷控制方法[J].电网技术,2011,35(3):32-37.Li Peng,Hao Zhiguo,Zhang Baohui,et al. A voltage instability avoidable control method for load shedding[J]. Power System Technology,2011,35(3):32-37.
[16]王菲,余贻鑫,刘艳丽.基于安全域的电网最小切负荷计算方法[J].中国电机工程学报,2010,30(13):38-33.Wang Fei,Yu Yixin,Liu Yanli. Minimum load-shedding calculation approach based on the security region in the power grid[J]. Proceedings of the CSEE,2010,30(13):38-33.
[17]赵婉君.高压直流输电工程技术[M].北京:中国电力出版社,2004:165-166.Zhao Wanjun. High voltage direct current transmission engineering[M]. Beijing:China Electric Power Pres,2004:165-166.
[18]郑超,马世英,盛灿辉,等.以直流逆变站为动态无功源的暂态电压稳定控制[J].中国电机工程学报,2014,34(34):41-49.Zheng Chao,Ma Shiying,Sheng Canhui,et a1. Transient voltage stability control based on the HVDC inverter station acting as dynamic reactive source[J]. Proceedings of the CSEE,2014,34(34):41-49.
[19]Paulo F D T,Bemt B,Gnnar A. Multiple infeed short circuit ratio aspects related to multiple HVDC into one AC network[C]. IEEE PES Transmission and Distribution Conference&Exhibition:Asia and Pacific. Dalian,China:IEEE,2005:l-4.
[20]林伟芳,汤涌,卜广全,等.多馈入交直流系统短路比的定义和应用[J].中国电机工程学报,2008,28(31):1-8.Lin Weifang,Tang Yong,Bu Guangquan. Definition and application of short circuit ratio for multi-infeed AC/DC power systems[J]. Proceedings of the CSEE,2008,28(31):1-8.
[2]宋云亭,郑超,秦晓辉.大电网结构规划[M].北京:中国电力出版社,2013:63-87.Song Yunting,Zheng Chao,Qin Xiaohui. Structure planning of largescale power grid[M]. Beijing:China Electric Power Press,2013:63-68.
[3]刘振亚,张启平.国家电网发展模式研究[J].中国电机工程学报,2013,33(7):1-10.Liu Zhengya,Zhang Qiping. Study on the development mode of national power grid of China[J]. Proceedings of the CSEE,2013,33(7):1-10.
[4]张文亮,于永清,李光范,等.特高压直流技术研究[J].中国电机工程学报,2007,27(22):1-7.Zhang Wenliang,Yu Yongqing,Li Guangfan,et al. Researches on UHVDC technology[J]. Proceedings of the CSEE,2007,27(22):1-7.
[5]刘振亚.特高压电网[M].北京:中国经济出版社,2005:23-26.Liu Zhenya. UHV power grid[M]. Beijing:China Economic Press,2005:23-26.
[6]徐政,蔡晔,刘国平.大规模交直流电力系统仿真计算的相关问题[J].电力系统自动化,2002,26(15):4-8.Xu Zheng,Cai Ye,Liu Guoping. Some problem in the simulation of large-scale AC/DC power system[J]. Automation of Electric Power Systems,2002,25(15):4-8.
[7]郭小江,马世英,卜广全,等.多馈入直流系统协调控制综述[J].电力系统自动化,2009,33(3):9-15.Guo Xiaojiang,Ma Shiying,Bu Guangquan,et al. Survey on coordinated control of multi-infeed dc systems[J]. Automation of Electric Power Systems,2009,33(3):9-15.
[8]林凌雪,张尧,钟庆,等.多馈入直流输电系统中换相失败研究综述[J].电网技术,2006,30(17):40-46.Lin Lingxue,Zhang Yao,Zhong Qing,et a1. A survey on commutation failures in multi-infeed HVDC transmission systems[J]. Power System Technology,2006,30(17):40-46.
[9]张晋华,蒋卫平,印永华,等.特高压规划电网安全稳定性研究[J].中国电机工程学报,2008,28(22):64-68.Zhang Jinhua,Jiang Weiping,Yin Yonghua,et a1. Security and stability study on planned ultra high voltage power grid[J]. Proceedings of the CSEE,2008,28(22):64-68.
[10]汪隆君,王钢,李海锋,等.交流系统故障诱发多直流馈入系统换相失败风险评估[J].电力系统自动化,2011,35(3):9-14.Wang Longjun,Wang Gang,Li Haifeng,et al. Risk evaluation of commutation failure in multi-infeed HVDC system under AC system fault conditions[J]. Automation of Electric Power Systems,2011,35(3):9-14.
[11]项玲,郑建勇,胡敏强.多端和多馈入直流输电系统中换相失败的研究[J].电力系统自动化,2005,29(11):29-33.Xiang Ling,Zheng Jianyong,Hu Minqiang. Study on commutation failure in MTDC and MIDDC systems[J]. Automation of Electric Power Systems,2005,29(11):29-33.
[12]王晶,梁志峰,江木,等.多馈入直流同时换相失败案例分析及仿真计算[J].电力系统自动化,2015,39(4):141-146.Wang Jing,Liang Zhifeng,Jiang Mu,et al. Case analysis and simulation failure in multi-infeed HVDC transmission systems[J]. Automation of Electric Power Systems,2015,39(4):141-146.
[13]郑超.直流逆变站电压稳定测度指标及紧急控制[J].中国电机工程学报,2015,35(2):344-352.Zheng Chao. Voltage stability index of HVDC inverter station and emergency control strategy[J]. Proceedings of the CSEE,2015,35(2):344-352.
[14]杨卫东,薛禹胜,荆勇,等.南方电网中多个直流系统间的协调功率恢复策略[J].电力系统自动化,2003,27(15):67-70.Yang Weidong,Xue Yusheng,Jing Yong,et al. A coordinated recovery strategy for 3 HVDC systems involved in the South China power grid[J]. Automation of Electric Power Systems,2003,27(15):67-70.
[15]李鹏,郝治国,张保会,等.一种防止电压失稳的切负荷控制方法[J].电网技术,2011,35(3):32-37.Li Peng,Hao Zhiguo,Zhang Baohui,et al. A voltage instability avoidable control method for load shedding[J]. Power System Technology,2011,35(3):32-37.
[16]王菲,余贻鑫,刘艳丽.基于安全域的电网最小切负荷计算方法[J].中国电机工程学报,2010,30(13):38-33.Wang Fei,Yu Yixin,Liu Yanli. Minimum load-shedding calculation approach based on the security region in the power grid[J]. Proceedings of the CSEE,2010,30(13):38-33.
[17]赵婉君.高压直流输电工程技术[M].北京:中国电力出版社,2004:165-166.Zhao Wanjun. High voltage direct current transmission engineering[M]. Beijing:China Electric Power Pres,2004:165-166.
[18]郑超,马世英,盛灿辉,等.以直流逆变站为动态无功源的暂态电压稳定控制[J].中国电机工程学报,2014,34(34):41-49.Zheng Chao,Ma Shiying,Sheng Canhui,et a1. Transient voltage stability control based on the HVDC inverter station acting as dynamic reactive source[J]. Proceedings of the CSEE,2014,34(34):41-49.
[19]Paulo F D T,Bemt B,Gnnar A. Multiple infeed short circuit ratio aspects related to multiple HVDC into one AC network[C]. IEEE PES Transmission and Distribution Conference&Exhibition:Asia and Pacific. Dalian,China:IEEE,2005:l-4.
[20]林伟芳,汤涌,卜广全,等.多馈入交直流系统短路比的定义和应用[J].中国电机工程学报,2008,28(31):1-8.Lin Weifang,Tang Yong,Bu Guangquan. Definition and application of short circuit ratio for multi-infeed AC/DC power systems[J]. Proceedings of the CSEE,2008,28(31):1-8.