应对多馈入直流换相失败的同步调相机布点方法
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摘要
特高压直流输电网受端交流故障诱发的直流换相失败会造成系统短时大量功率短缺,对系统安全稳定性带来巨大威胁。同步调相机因其强大的动态无功支撑能力,在应对多馈入直流换相失败及加快系统暂态恢复过程方面受到了越来越多的关注。从多馈入直流间相互作用角度出发,分析了调相机应对多馈入直流换相失败的优势,结合多馈入交互作用因子、多馈入有效短路比及相对暂态电压跌落面积指标,逐层确定最佳的动态无功补偿站点,提出一种可运用于工程实际的调相机应对多馈入直流换相失败的布点方法,并在华东电网数据典型运行方式的基础上进行了仿真验证。
Faults occurring in receiving-end alternate current(AC)grid of multi-infeed high-voltage direct current(HVDC)system may result in simultaneous commutation failures and short-time huge power shortage,which are great threats to the stability of power grid.Due to the strong support abilities in reactive power,synchronous condenser has received more and more attention in restraining commutation failures of multi-infeed DC systems and speeding up the transient recovery process after faults.From the angle of interplay between multi-infeed DC systems,the superiority of synchronous condenser in restraining commutation failures is analyzed,and then the best dynamic reactive power compensation node level are determined by combining with concepts of multi-infeed interaction factor(MIIF),multi-infeed effective short circuit ratio(MESCR)and relative-transient-voltage-drop-area index(RTVDAI).Finally,a reliable and applicable method for the site selection of synchronous condenser responding to commutation failures in multi-infeed HVDC system is proposed,and the simulation is carried out on the basis of typical operation mode of East China power grid.
Faults occurring in receiving-end alternate current(AC)grid of multi-infeed high-voltage direct current(HVDC)system may result in simultaneous commutation failures and short-time huge power shortage,which are great threats to the stability of power grid.Due to the strong support abilities in reactive power,synchronous condenser has received more and more attention in restraining commutation failures of multi-infeed DC systems and speeding up the transient recovery process after faults.From the angle of interplay between multi-infeed DC systems,the superiority of synchronous condenser in restraining commutation failures is analyzed,and then the best dynamic reactive power compensation node level are determined by combining with concepts of multi-infeed interaction factor(MIIF),multi-infeed effective short circuit ratio(MESCR)and relative-transient-voltage-drop-area index(RTVDAI).Finally,a reliable and applicable method for the site selection of synchronous condenser responding to commutation failures in multi-infeed HVDC system is proposed,and the simulation is carried out on the basis of typical operation mode of East China power grid.
引文
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[13]TOLEDO P F D,BERGDAHL B,ASPLUND G.Multiple infeed short circuit ratio-aspects related to multiple HVDC into one AC network[C]//IEEE/PES Transmission&Distribution Conference&Exhibition:Asia and Pacific,August 18,2005,Dalian,China.
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[15]马世英,印永华,汤涌,等.短期和中长期电压稳定仿真及评价[J].电网技术,2006,30(19):14-20.MA Shiying,YIN Yonghua,TANG Yong,et al.Simulation and evaluation for short term and mid/long term voltage stability[J].Power System Technology,2006,30(19):14-20.
[2]刘建,李兴源,傅孝韬,等.多馈入短路比及多馈入交互作用因子与换相失败的关系[J].电网技术,2009,33(12):20-25.LIU Jian,LI Xingyuan,FU Xiaotao,et al.Relationship of multi-infeed short circuit ratio and multi-infeed interaction factor with commutation failure[J].Power System Technology,2009,33(12):20-25.
[3]刘育权,杜兆斌,陈海涛,等.多馈入直流受端电网动态无功补偿选址研究[J].南方电网技术,2013,7(5):32-36.LIU Yuquan,DU Zhaobin,CHEN Haitao,et al.Study on the site selection for dynamic VAR compensation of receiving-end grid with multi-infeed HVDC transmission systems[J].Southern Power System Technology,2013,7(5):32-36.
[4]胡彩娥,杨仁刚.用电力系统分区方法确定无功源最佳配置地点[J].电力系统及其自动化学报,2004,16(3):46-49.HU Caie,YANG Rengang.Optimal allocation of reactive power sources using network partitioning[J].Proceedings of the CSU-EPSA,2004,16(3):46-49.
[5]王耀瑜,张伯明,孙宏斌,等.一种基于专家知识的电力系统电压/无功分级分布式优化控制分区方法[J].中国电机工程学报,1998,18(3):221-224.WANG Yaoyu,ZHANG Boming,SUN Hongbin,et al.Expert knowledge based subarea division method for hierarchical and distributed electric power system voltage/VAR optimization and control[J].Proceedings of the CSEE,1998,18(3):221-224.
[6]张红丽,刘福锁,李威.动态无功补偿装置提高多馈入直流恢复的布点方法[J].电力系统自动化,2016,40(5):133-138.DOI:10.7500/AEPS20150518001.ZHANG Hongli,LIU Fusuo,LI Wei.Site selection for dynamic reactive power compensation and improvement of recovery from commutation failures in multi-infeed HVDC system[J].Automation of Electric Power Systems,2016,40(5):133-138.DOI:10.7500/AEPS20150518001.
[7]KATSUYA Y,MITANI Y,TSUJI K.Power system stabilization by synchronous condenser with fast excitation control[C]//International Conference on Power System Technology,December 2-3,2000,Perth,Australia:1563-1568.
[8]SERCAN T,TARIK A,TORBJRN T,et al.Performance comparison of synchronous condenser and SVC[J].IEEETransactions on Power Delivery,2008,23(3):1606-1612.
[9]王雅婷,张一驰,周勤勇,等.新一代大容量调相机在电网中的应用研究[J].电网技术,2017,41(1):22-28.WANG Yating,ZHANG Yichi,ZHOU Qinyong,et al.Study on application of new generation large capacity synchronous condenser in power grid[J].Power System Technology,2017,41(1):22-28.
[10]CIGRE Working Group B4.41.Systems with multiple DCinfeed[R].Paris,France:CIGRE,2008.
[11]金小明,周保荣,管霖,等.多馈入直流交互影响强度的评估指标[J].电力系统自动化,2009,33(15):98-102.JIN Xiaoming,ZHOU Baorong,GUAN Lin,et al.HVDC-interaction-strength index for the multi-infeed-HVDC power system[J].Automation of Electric Power Systems,2009,33(15):98-102.
[12]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 al.A survey on commutation failures in multi-infeed HVDC transmission systems[J].Power System Technology,2006,30(17):40-46.
[13]TOLEDO P F D,BERGDAHL B,ASPLUND G.Multiple infeed short circuit ratio-aspects related to multiple HVDC into one AC network[C]//IEEE/PES Transmission&Distribution Conference&Exhibition:Asia and Pacific,August 18,2005,Dalian,China.
[14]KRISHAYYA P C S,ADAPA R,HOLM M,et al.IEEEguide for planning DC links terminating at AC locations having low short-circuit capacities:PartⅠAC/DC system interaction phenomena:IEEE Std 1204-1997[S].1997.
[15]马世英,印永华,汤涌,等.短期和中长期电压稳定仿真及评价[J].电网技术,2006,30(19):14-20.MA Shiying,YIN Yonghua,TANG Yong,et al.Simulation and evaluation for short term and mid/long term voltage stability[J].Power System Technology,2006,30(19):14-20.