减小电压暂降深度及持续时间的单相重合闸时序方案
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摘要
为了减轻单相重合闸重合失败时敏感负荷的电压暂降深度及持续时间,提出一种单相重合闸时序方案。当线路发生单相接地故障且两侧保护动作跳开故障相断路器,利用故障分量概念构建故障附加状态网络,在线路两端分别接入附加电源,计算敏感负荷节点的故障分量电压。依据敏感负荷节点故障分量电压幅值大小确定重合闸时序,幅值小的一侧先重合。线路先重合侧重合后,后重合侧利用线路电压幅值大小判别是否开放重合闸。PSCAD/EMTDC仿真结果表明该方法不受过渡电阻和故障位置的影响,能够改善敏感负荷的电压电能质量。
In order to reduce the voltage sag depth and duration of sensitive load when the single-phase circuit breaker reclosing fails, a scheme of single-phase reclosing sequence is proposed. When a single-phase grounding fault occurs on the line, the protections on both sides act and fault phase breakers are tripped. The concept of fault component is used to construct the fault additional state network. Additional source is added to each end of the line to calculate the fault component voltage of the sensitive load node. The reclosing sequence is determined according to the magnitude of fault component voltage of sensitive load node. The side with smaller magnitude is determined to reclose first. After one side of the line is reclosed, the magnitude of line voltage is used to judge whether the reclosing is open or not at the other side. PSCAD/EMTDC simulation results show that this method is not affected by transition resistance and fault location and can improve the voltage power quality of sensitive load.
In order to reduce the voltage sag depth and duration of sensitive load when the single-phase circuit breaker reclosing fails, a scheme of single-phase reclosing sequence is proposed. When a single-phase grounding fault occurs on the line, the protections on both sides act and fault phase breakers are tripped. The concept of fault component is used to construct the fault additional state network. Additional source is added to each end of the line to calculate the fault component voltage of the sensitive load node. The reclosing sequence is determined according to the magnitude of fault component voltage of sensitive load node. The side with smaller magnitude is determined to reclose first. After one side of the line is reclosed, the magnitude of line voltage is used to judge whether the reclosing is open or not at the other side. PSCAD/EMTDC simulation results show that this method is not affected by transition resistance and fault location and can improve the voltage power quality of sensitive load.
引文
[1] 肖湘宁.电能质量分析与控制[M].北京:中国电力出版社,2010.XIAO Xiangning.Power quality analysis and control [M].Beijing:China Electric Power Press,2010.
[2] 电能质量电压暂降与短时中断:GB/T 30137—2013 [S].2014.Power quality—voltage dips and short interruptions:GB/T 30137—2013 [S].2014.
[3] 刘平,欧阳森.兼顾变电站暂降严重性及装置差异的电能质量监测网络优化[J].电力系统自动化,2017,41(3):161-167.DOI:10.7500/AEPS20160528002.LIU Ping,OUYANG Sen.Power quality monitoring network optimization taking account of the seriousness of sag and device difference in substation[J].Automation of Electric Power Systems,2017,41(3):161-167.DOI:10.7500/AEPS20160528002.
[4] 刘旭娜,肖先勇,汪颖.电压暂降严重程度及其测度、不确定性评估方法[J].中国电机工程学报,2014,34(4):644-658.LIU Xuna,XIAO Xianyong,WANG Ying.Voltage sag severity and its measure and uncertainty evaluation[J].Proceedings of the CSEE,2014,34(4):644-658.
[5] 陈众励,许维胜.电压中断与电压暂降的成因及其防治[J].电工技术学报,2015,30(1):518-520.CHEN Zhongli,XU Weisheng.Reason and prevention of voltage interruption and voltage sags[J].Transactions of China Electrotechnical Society,2015,30(1):518-520.
[6] PRASAD M.Comparative analysis of PV fed VSI,CSI and ZSI based UPQC for mitigation of voltage sags and harmonics[J].International Journal of Renewable Energy Research,2017,7(2):669-675.
[7] XU Y,XIAO X,SUN Y,et al.Voltage sag compensation strategy for unified power quality conditioner with simultaneous reactive power injection[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):113-122.
[8] LUO A,XU Q,MA F,et al.Overview of power quality analysis and control technology for the smart grid[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):1-9.
[9] 贺家李,李永丽,董新洲,等.电力系统继电保护原理 [M].4版.北京:中国电力出版社,2010.HE Jiali,LI Yongli,DONG Xinzhou,et al.Power system relay protection principle[M].4th ed.Beijing:China Electric Power Press,2010.
[10] 李斌,李永丽,贺家李,等.750 kV输电线路保护与单相重合闸动作的研究[J].电力系统自动化,2004,28(12):60-64.LI Bin,LI Yongli,HE Jiali,et al.The study on the protective relay and single-phase reclosure of 750 kV transmission lines[J].Automation of Electric Power Systems,2004,28(13):73-76.
[11] 王梅义.电网继电保护应用[M].北京:中国电力出版社,1999.WANG Meiyi.Grid relay protection application[M].Beijing:China Electric Power Press,1999.
[12] 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.
[13] 沈军,舒治淮,陈军,等.自适应重合闸在电力系统中的应用实践[J].电力系统自动化,2018,42(6):152-156.DOI:10.7500/AEPS20170323004.SHEN Jun,SHU Zhihuai,CHEN Jun,et al.Application practice of adaptive reclosing in power system[J].Automation of Electric Power Systems,2018,42(6):152-156.DOI:10.7500/AEPS20170323004.
[14] 解超,李凤婷,王宾,等.基于功率比的带并补电抗风电送出线自适应单相重合闸[J].电力系统自动化,2018,42(13):196-201.DOI:10.7500/AEPS20171010005.XIE Chao,LI Fengting,WANG Bin,et al.Adaptive single-phase reclosing with power-compensated electric wind-resistant transmission line based on power ratio[J].Automation of Electric Power Systems,2018,42(13):196-201.DOI:10.7500/AEPS20171010005.
[15] 王庆庆,王慧芳,林达,等.带并联电抗器线路单相永久性故障的识别方法[J].电力系统自动化,2015,39(5):101-106.WANG Qingqing,WANG Huifang,LIN Da,et al.Identification method of single-phase permanent fault with shunt reactor line[J].Automation of Electric Power Systems,2015,39(5):101-106.
[16] 梁振锋,崔若巍,杨宁宁,等.三相不对称输电线路单相自适应重合闸的研究[J].电力系统保护与控制,2018,46(8):31-36.LIANG Zhenfeng,CUI Ruowei,YANG Ningning,et al.Study on single-phase adaptive reclosing of three-phase asymmetric transmission line[J].Power System Protection and Control,2018,46(8):31-36.
[17] 束洪春,孙士云.单相重合时序对特高压交直流系统暂态电压稳定性的影响[J].中国电机工程学报,2010,30(16):32-37.SHU Hongchun,SUN Shiyun.Influence of single-phase reclosure sequence on ultra-high voltage AC/DC system’s transient voltage stability[J].Proceeding of the CSEE,2010,30(16):32-37.
[18] 孙士云,束洪春,于继来,等.单相重合时序对750 kV输电线路合闸过电压的影响[J].电网技术,2012,36(3):63-69.SUN Shiyun,SHU Hongchun,YU Jilai,et al.Influence of time-sequence of single-phase autoreclosure on switching-on overvoltage occurred in 750 kV transmission line[J].Power System Technology,2012,36(3):63-69.
[19] 束洪春,孙士云,刘可真,等.换流站近端交流输电线路重合时序问题研究[J].中国电机工程学报,2012,32(7):114-123.SHU Hongchun,SUN Shiyun,LIU Kezhen,et al.Study on reclosure of AC transmission lines near converter stations[J].Proceedings of the CSEE,2012,32(7):114-123.
[20] 梁振锋,康小宁,姚李孝,等.关于故障分量概念的讨论[J].继电器,2007,35(1):37-41.LIANG Zhenfeng,KANG Xiaoning,YAO Lixiao,et al.Discussion on fault components[J].Relay,2007,35(1):37- 41.
[21] 韩海娟,牟龙华,郭文明.基于故障分量的微电网保护适用性[J].电力系统自动化,2016,40(3):90-96.HAN Haijuan,MU Longhua,GUO Wenming.Adaptability of microgrid protection based on fault components[J].Automation of Electric Power Systems,2016,40(3):90-96.
[2] 电能质量电压暂降与短时中断:GB/T 30137—2013 [S].2014.Power quality—voltage dips and short interruptions:GB/T 30137—2013 [S].2014.
[3] 刘平,欧阳森.兼顾变电站暂降严重性及装置差异的电能质量监测网络优化[J].电力系统自动化,2017,41(3):161-167.DOI:10.7500/AEPS20160528002.LIU Ping,OUYANG Sen.Power quality monitoring network optimization taking account of the seriousness of sag and device difference in substation[J].Automation of Electric Power Systems,2017,41(3):161-167.DOI:10.7500/AEPS20160528002.
[4] 刘旭娜,肖先勇,汪颖.电压暂降严重程度及其测度、不确定性评估方法[J].中国电机工程学报,2014,34(4):644-658.LIU Xuna,XIAO Xianyong,WANG Ying.Voltage sag severity and its measure and uncertainty evaluation[J].Proceedings of the CSEE,2014,34(4):644-658.
[5] 陈众励,许维胜.电压中断与电压暂降的成因及其防治[J].电工技术学报,2015,30(1):518-520.CHEN Zhongli,XU Weisheng.Reason and prevention of voltage interruption and voltage sags[J].Transactions of China Electrotechnical Society,2015,30(1):518-520.
[6] PRASAD M.Comparative analysis of PV fed VSI,CSI and ZSI based UPQC for mitigation of voltage sags and harmonics[J].International Journal of Renewable Energy Research,2017,7(2):669-675.
[7] XU Y,XIAO X,SUN Y,et al.Voltage sag compensation strategy for unified power quality conditioner with simultaneous reactive power injection[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):113-122.
[8] LUO A,XU Q,MA F,et al.Overview of power quality analysis and control technology for the smart grid[J].Journal of Modern Power Systems and Clean Energy,2016,4(1):1-9.
[9] 贺家李,李永丽,董新洲,等.电力系统继电保护原理 [M].4版.北京:中国电力出版社,2010.HE Jiali,LI Yongli,DONG Xinzhou,et al.Power system relay protection principle[M].4th ed.Beijing:China Electric Power Press,2010.
[10] 李斌,李永丽,贺家李,等.750 kV输电线路保护与单相重合闸动作的研究[J].电力系统自动化,2004,28(12):60-64.LI Bin,LI Yongli,HE Jiali,et al.The study on the protective relay and single-phase reclosure of 750 kV transmission lines[J].Automation of Electric Power Systems,2004,28(13):73-76.
[11] 王梅义.电网继电保护应用[M].北京:中国电力出版社,1999.WANG Meiyi.Grid relay protection application[M].Beijing:China Electric Power Press,1999.
[12] 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.
[13] 沈军,舒治淮,陈军,等.自适应重合闸在电力系统中的应用实践[J].电力系统自动化,2018,42(6):152-156.DOI:10.7500/AEPS20170323004.SHEN Jun,SHU Zhihuai,CHEN Jun,et al.Application practice of adaptive reclosing in power system[J].Automation of Electric Power Systems,2018,42(6):152-156.DOI:10.7500/AEPS20170323004.
[14] 解超,李凤婷,王宾,等.基于功率比的带并补电抗风电送出线自适应单相重合闸[J].电力系统自动化,2018,42(13):196-201.DOI:10.7500/AEPS20171010005.XIE Chao,LI Fengting,WANG Bin,et al.Adaptive single-phase reclosing with power-compensated electric wind-resistant transmission line based on power ratio[J].Automation of Electric Power Systems,2018,42(13):196-201.DOI:10.7500/AEPS20171010005.
[15] 王庆庆,王慧芳,林达,等.带并联电抗器线路单相永久性故障的识别方法[J].电力系统自动化,2015,39(5):101-106.WANG Qingqing,WANG Huifang,LIN Da,et al.Identification method of single-phase permanent fault with shunt reactor line[J].Automation of Electric Power Systems,2015,39(5):101-106.
[16] 梁振锋,崔若巍,杨宁宁,等.三相不对称输电线路单相自适应重合闸的研究[J].电力系统保护与控制,2018,46(8):31-36.LIANG Zhenfeng,CUI Ruowei,YANG Ningning,et al.Study on single-phase adaptive reclosing of three-phase asymmetric transmission line[J].Power System Protection and Control,2018,46(8):31-36.
[17] 束洪春,孙士云.单相重合时序对特高压交直流系统暂态电压稳定性的影响[J].中国电机工程学报,2010,30(16):32-37.SHU Hongchun,SUN Shiyun.Influence of single-phase reclosure sequence on ultra-high voltage AC/DC system’s transient voltage stability[J].Proceeding of the CSEE,2010,30(16):32-37.
[18] 孙士云,束洪春,于继来,等.单相重合时序对750 kV输电线路合闸过电压的影响[J].电网技术,2012,36(3):63-69.SUN Shiyun,SHU Hongchun,YU Jilai,et al.Influence of time-sequence of single-phase autoreclosure on switching-on overvoltage occurred in 750 kV transmission line[J].Power System Technology,2012,36(3):63-69.
[19] 束洪春,孙士云,刘可真,等.换流站近端交流输电线路重合时序问题研究[J].中国电机工程学报,2012,32(7):114-123.SHU Hongchun,SUN Shiyun,LIU Kezhen,et al.Study on reclosure of AC transmission lines near converter stations[J].Proceedings of the CSEE,2012,32(7):114-123.
[20] 梁振锋,康小宁,姚李孝,等.关于故障分量概念的讨论[J].继电器,2007,35(1):37-41.LIANG Zhenfeng,KANG Xiaoning,YAO Lixiao,et al.Discussion on fault components[J].Relay,2007,35(1):37- 41.
[21] 韩海娟,牟龙华,郭文明.基于故障分量的微电网保护适用性[J].电力系统自动化,2016,40(3):90-96.HAN Haijuan,MU Longhua,GUO Wenming.Adaptability of microgrid protection based on fault components[J].Automation of Electric Power Systems,2016,40(3):90-96.