计及直流短路特性的单相故障换相失败免疫指标
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摘要
对电力系统最常见的单相故障,提出单相故障本地换相失败免疫指标和多馈入系统的换相失败免疫指标。在计算接地阻抗和短路电压的关系时,针对阻抗法未考虑直流系统短路特性的不足进行分析,提出基于交直流潮流的多馈入系统短路电压计算方法,以更加精确地得到临界阻抗。基于CIGRE-benchmark模型构建了三馈入系统,通过时域仿真结果、阻抗法计算结果和文中结果的对比,证明了所提算法的有效性和先进性。
The immune index of the local commutation failure and of the multi-infeed direct current(MIDC) system commutation failure against single phase fault are proposed. This paper analyzes the disadvantage of impedance method in short circuit voltage calculation, and puts forward the calculation method basing on the AC/DC flow. A three-fed system basing on the CIGRE-benchmark model is established. The effectiveness and advancement of the proposed algorithm is proved by the comparison between the results of the simulation and impedance method result.
The immune index of the local commutation failure and of the multi-infeed direct current(MIDC) system commutation failure against single phase fault are proposed. This paper analyzes the disadvantage of impedance method in short circuit voltage calculation, and puts forward the calculation method basing on the AC/DC flow. A three-fed system basing on the CIGRE-benchmark model is established. The effectiveness and advancement of the proposed algorithm is proved by the comparison between the results of the simulation and impedance method result.
引文
[1]李佳曼,蔡泽祥,李晓华,等.直流系统保护对交流故障的响应机理与交流故障引发的直流系统保护误动分析[J].电网技术,2015,39(4):953-960.Li Jiaman,Cai Zexiang,Li Xiaohua,et al.Response mechanism of UHVDC system protection to faults in UHVAC system and analysis on malfunction of UHVDC protection caused by faults in UHVAC system[J].Power System Technology,2015,39(4):953-960(in Chinese).
[2]杨欢欢,朱林,蔡泽祥,等.直流控制对直流系统无功动态特性的影响分析[J].电网技术,2014,38(10):2631-2637.Yang Huanhuan,Zhu Lin,Cai Zexiang,et al.Influence of HVDC control on HVDC reactive power dynamic characteristic[J].Power System Technology,2014,38(10):2631-2637(in Chinese).
[3]李晓坷.上海电网多直流落点系统稳定性研究[D].杭州:浙江大学,2007.
[4]徐式蕴,吴萍,赵兵,等.哈郑直流受端华中电网基于响应的交直流协调控制措施[J].电网技术,2015,39(7):1773-1778.Xu Shiyun,Wu Ping,Zhao Bing,et al.Coordinated control strategy of interconnected grid integrated with UHVDC transmission line from Hami to Zhengzhou[J].Power System Technology,2015,39(7):1773-1778(in Chinese).
[5]欧开健,任震,荆勇.直流输电系统换相失败的研究(一)—换相失败的影响因素分析[J].电力自动化设备,2003,23(5):5-8.Ou Kaijian,Ren Zheng,Jing Yong.Research on commutation failure in HVDC transmission system Part 1:commutation failure factors analysis[J].Electric Power Automation Equipment,2003,23(5):5-8(in Chinese).
[6]王增平,刘席洋,李林泽,等.多馈入直流输电系统换相失败边界条件[J].电工技术学报,2017,32(10):12-19.Wang Zengping,Liu Xiyang,Li Linze,et al.Boundary conditions of commutation failure in multi-infeed HVDC systems[J].Transactions of China Electrotechnical Society,2017,32(10):12-19(in Chinese).
[7]Rahimi E,Gole A M,Davies J B,et al.Commutation failure analysis in multi-infeed HVDC systems[J].IEEE Transactions on Power Delivery,2011,26(1):378-384.
[8]肖浩,朱佳,李银红,等.多馈入直流系统换相失败免疫水平快速确定方法研究[J].中国电机工程学报,2015,35(11):2711-2717.Xiao Hao,Zhu Jia,Li Yinhong,et al.Study on rapid determination method of commutation failure immunity levels for multi-infeed HVDC transmission systems[J].Proceedings of the CSEE,2015,35(11):2711-2717(in Chinese).
[9]邵瑶,汤涌.采用多馈入交互作用因子判断高压直流系统换相失败的方法[J].中国电机工程学报,2012,32(4):108-114.Shao Yao,Tang Yong.A commutation failure detection method for HVDC systems based on multi-infeed interaction factors[J].Proceedings of the CSEE,2012,32(4):108-114(in Chinese).
[10]肖浩,李银红,于芮技,等.影响多馈入直流系统换相失败的电网薄弱区域快速识别方法[J].中国电机工程学报,2016,36(7):1781-1789.Xiao Hao,Li Yinhong,Yu Ruiji,et al.A rapid identification method of weak areas in power grid based on commutation failure analysis in multi-infeed HVDC systems[J].Proceedings of the CSEE,2016,36(7):1781-1789(in Chinese).
[11]陈慈萱,电气工程基础[M].北京:中国电力出版社,2003.
[12]马玉龙,肖湘宁,姜旭.交流系统接地故障对HVDC的影响分析[J].中国电机工程学报,2006,26(11):144-149.Ma Yulong,Xiao Xiangning,Jiang Xu.Analysis of the impact of AC system single-phase earth fault on HVDC[J].Proceedings of the CSEE,2006,26(11):144-149(in Chinese).
[13]浙江大学发电教研组直流输电科研组.直流输电[M].北京:电力工业出版社,1982.
[14]刘建,李兴源,吴冲,等.HVDC系统换相失败的临界指标[J].电网技术,2009,33(8):8-12.Liu Jian,Li Xingyuan,Wu Chong.Research on critical index of commutation failure in HVDC system[J].Power System Technology,2009,33(8):8-12(in Chinese).
[15]何仰赞,电力系统分析[M].武汉:华中科技大学出版社,2002.
[16]Nayak R N,Sasmal R P,Sehgal Y K,et al.AC/DC interactions in multi-infeed HVDC scheme:a case study[C]//IEEE Power Conference.India:IEEE,2006:5.
[17]B CIGRE Working Group.Systems with multiple DC infeed[R].Paris:CIGRE,2008.
[18]肖俊,李兴源.多馈入和多端交直流系统相互作用因子及其影响因素分析[J].电网技术,2014,38(1):1-7.Xiao Jun,Li Xingyuan.Analysis on multi-infeed interaction factor of multi-infeed AC/DC system and multi-terminal AC/DC system and its influencing factor[J].Power System Technology,2014,38(1):1-7(in Chinese).
[19]林伟芳,汤涌,卜广全.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,Bo 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(in Chinese).
[20]陈修宇,韩民晓,刘崇茹.直流控制方式对多馈入交直流系统电压相互作用的影响[J].电力系统自动化,2012,36(2):58-63.Chen Xiuyu,Han Minxiao,Liu Chongru.Impact of control modes on voltage interaction between multi-infeed AC-DC system[J].Automation of Electric Power Systems,2012,36(2):58-63(in Chinese).
[21]徐政.交直流电力系统动态行为分析[M].北京:机械工业出版社,2004.
[22]郭紫昱,林涛,王立永,等.逆变侧交流电压畸变下HVDC运行特性分析[J].电力自动化设备,2017,37(8):150-157.Guo Ziyu,Lin Tao,Wang Liyong,et al.Influence of inverter-side AC-voltage distortion on HVDC system[J].Electric Power Automation Equipment,2017,37(8):150-157(in Chinese).
[23]Aik D L H,Andersson G.Power stability analysis of multi-infeed HVDC systems[J].IEEE Transactions on Power Delivery,1998,13(3):923-931.
[2]杨欢欢,朱林,蔡泽祥,等.直流控制对直流系统无功动态特性的影响分析[J].电网技术,2014,38(10):2631-2637.Yang Huanhuan,Zhu Lin,Cai Zexiang,et al.Influence of HVDC control on HVDC reactive power dynamic characteristic[J].Power System Technology,2014,38(10):2631-2637(in Chinese).
[3]李晓坷.上海电网多直流落点系统稳定性研究[D].杭州:浙江大学,2007.
[4]徐式蕴,吴萍,赵兵,等.哈郑直流受端华中电网基于响应的交直流协调控制措施[J].电网技术,2015,39(7):1773-1778.Xu Shiyun,Wu Ping,Zhao Bing,et al.Coordinated control strategy of interconnected grid integrated with UHVDC transmission line from Hami to Zhengzhou[J].Power System Technology,2015,39(7):1773-1778(in Chinese).
[5]欧开健,任震,荆勇.直流输电系统换相失败的研究(一)—换相失败的影响因素分析[J].电力自动化设备,2003,23(5):5-8.Ou Kaijian,Ren Zheng,Jing Yong.Research on commutation failure in HVDC transmission system Part 1:commutation failure factors analysis[J].Electric Power Automation Equipment,2003,23(5):5-8(in Chinese).
[6]王增平,刘席洋,李林泽,等.多馈入直流输电系统换相失败边界条件[J].电工技术学报,2017,32(10):12-19.Wang Zengping,Liu Xiyang,Li Linze,et al.Boundary conditions of commutation failure in multi-infeed HVDC systems[J].Transactions of China Electrotechnical Society,2017,32(10):12-19(in Chinese).
[7]Rahimi E,Gole A M,Davies J B,et al.Commutation failure analysis in multi-infeed HVDC systems[J].IEEE Transactions on Power Delivery,2011,26(1):378-384.
[8]肖浩,朱佳,李银红,等.多馈入直流系统换相失败免疫水平快速确定方法研究[J].中国电机工程学报,2015,35(11):2711-2717.Xiao Hao,Zhu Jia,Li Yinhong,et al.Study on rapid determination method of commutation failure immunity levels for multi-infeed HVDC transmission systems[J].Proceedings of the CSEE,2015,35(11):2711-2717(in Chinese).
[9]邵瑶,汤涌.采用多馈入交互作用因子判断高压直流系统换相失败的方法[J].中国电机工程学报,2012,32(4):108-114.Shao Yao,Tang Yong.A commutation failure detection method for HVDC systems based on multi-infeed interaction factors[J].Proceedings of the CSEE,2012,32(4):108-114(in Chinese).
[10]肖浩,李银红,于芮技,等.影响多馈入直流系统换相失败的电网薄弱区域快速识别方法[J].中国电机工程学报,2016,36(7):1781-1789.Xiao Hao,Li Yinhong,Yu Ruiji,et al.A rapid identification method of weak areas in power grid based on commutation failure analysis in multi-infeed HVDC systems[J].Proceedings of the CSEE,2016,36(7):1781-1789(in Chinese).
[11]陈慈萱,电气工程基础[M].北京:中国电力出版社,2003.
[12]马玉龙,肖湘宁,姜旭.交流系统接地故障对HVDC的影响分析[J].中国电机工程学报,2006,26(11):144-149.Ma Yulong,Xiao Xiangning,Jiang Xu.Analysis of the impact of AC system single-phase earth fault on HVDC[J].Proceedings of the CSEE,2006,26(11):144-149(in Chinese).
[13]浙江大学发电教研组直流输电科研组.直流输电[M].北京:电力工业出版社,1982.
[14]刘建,李兴源,吴冲,等.HVDC系统换相失败的临界指标[J].电网技术,2009,33(8):8-12.Liu Jian,Li Xingyuan,Wu Chong.Research on critical index of commutation failure in HVDC system[J].Power System Technology,2009,33(8):8-12(in Chinese).
[15]何仰赞,电力系统分析[M].武汉:华中科技大学出版社,2002.
[16]Nayak R N,Sasmal R P,Sehgal Y K,et al.AC/DC interactions in multi-infeed HVDC scheme:a case study[C]//IEEE Power Conference.India:IEEE,2006:5.
[17]B CIGRE Working Group.Systems with multiple DC infeed[R].Paris:CIGRE,2008.
[18]肖俊,李兴源.多馈入和多端交直流系统相互作用因子及其影响因素分析[J].电网技术,2014,38(1):1-7.Xiao Jun,Li Xingyuan.Analysis on multi-infeed interaction factor of multi-infeed AC/DC system and multi-terminal AC/DC system and its influencing factor[J].Power System Technology,2014,38(1):1-7(in Chinese).
[19]林伟芳,汤涌,卜广全.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,Bo 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(in Chinese).
[20]陈修宇,韩民晓,刘崇茹.直流控制方式对多馈入交直流系统电压相互作用的影响[J].电力系统自动化,2012,36(2):58-63.Chen Xiuyu,Han Minxiao,Liu Chongru.Impact of control modes on voltage interaction between multi-infeed AC-DC system[J].Automation of Electric Power Systems,2012,36(2):58-63(in Chinese).
[21]徐政.交直流电力系统动态行为分析[M].北京:机械工业出版社,2004.
[22]郭紫昱,林涛,王立永,等.逆变侧交流电压畸变下HVDC运行特性分析[J].电力自动化设备,2017,37(8):150-157.Guo Ziyu,Lin Tao,Wang Liyong,et al.Influence of inverter-side AC-voltage distortion on HVDC system[J].Electric Power Automation Equipment,2017,37(8):150-157(in Chinese).
[23]Aik D L H,Andersson G.Power stability analysis of multi-infeed HVDC systems[J].IEEE Transactions on Power Delivery,1998,13(3):923-931.
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