减小电压暂降深度的三相重合闸时序研究
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摘要
为了减轻三相重合闸重合失败时敏感负荷母线处的电压暂降深度,提出一种确定三相重合闸时序的方法。当线路故障、两侧保护动作跳开三相断路器后,基于故障分量的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2种情况下敏感负荷母线的故障分量电压。依据该故障分量电压幅值大小确定重合闸时序,令幅值小的一侧为检无压侧。通过PSCAD/EMTDC软件建立IEEE 39系统进行仿真计算,并考虑了不同故障类型、故障位置及过渡电阻等因素对重合闸时序的影响,结果表明该方法能够改善敏感负荷的电压质量,并且不需要增加投资。
In order to reduce voltage sag depth of sensitive load when three-phase circuit breaker reclosing is failed, a method determining three-phase reclosing sequence is proposed. When faults occur on a transmission line, the relays act and the three-phase circuit breakers trip on both sides of the line. According to fault component theory, a faulted network is built. Additional source is added on each end of the line and then the fault component voltage of sensitive load node is calculated for two cases. Based on the amplitude of fault component voltage of sensitive load, the three-phase reclosing sequence is determined. The side with smaller amplitude of fault component voltage is determined to checking non-voltage. An IEEE 39 System model is established in PSCAD/EMTDC for simulation, and the influence of different fault types, fault locations and transition resistances on reclosing sequence is considered. Results show that the method can effectivelyreduce voltage sag depth of sensitive load in case of three-phase circuit breaker reclosing failure, able to improve voltage quality without additional investment.
In order to reduce voltage sag depth of sensitive load when three-phase circuit breaker reclosing is failed, a method determining three-phase reclosing sequence is proposed. When faults occur on a transmission line, the relays act and the three-phase circuit breakers trip on both sides of the line. According to fault component theory, a faulted network is built. Additional source is added on each end of the line and then the fault component voltage of sensitive load node is calculated for two cases. Based on the amplitude of fault component voltage of sensitive load, the three-phase reclosing sequence is determined. The side with smaller amplitude of fault component voltage is determined to checking non-voltage. An IEEE 39 System model is established in PSCAD/EMTDC for simulation, and the influence of different fault types, fault locations and transition resistances on reclosing sequence is considered. Results show that the method can effectivelyreduce voltage sag depth of sensitive load in case of three-phase circuit breaker reclosing failure, able to improve voltage quality without additional investment.
引文
[1]陈卫东,肖先勇,李皖,等.敏感负荷电压凹陷敏感度的最佳平方逼近评估法[J].电网技术,2009,33(8):55-59.Chen Weidong,Xiao Xianyong,Li Wan,et al.Voltage sag sensitivity assessment of sensitive equipments by optimal square approximation[J].Power System Technology,2009,33(8):55-59(in Chinese).
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[7]谭骞,徐永海,黄浩,等.不对称电压暂降情况下光伏逆变器输出电流峰值的控制策略[J].电网技术,2015,39(3):601-608.Tan Qian,Xu Yonghai,Huang Hao,et al.A control strategy for peak output current of PV inverter under unbalanced voltage sags[J].Power System Technology,2015,39(3):601-608(in Chinese).
[8]贺益康,胡家兵.双馈异步风力发电机并网运行中的几个热点问题[J].中国电机工程学报,2012,32(27):1-15.He Yikang,Hu Jiabing.Several hot-spot issues associated with the grid-connected operations of wind-turbine driven doubly fed induction generators[J].Proceedings of the CSEE,2012,32(27):1-15(in Chinese).
[9]孙华东,张振宇,林伟芳,等.2011年西北电网风机脱网事故分析及启示[J].电网技术,2012,36(10):76-80.Sun Huadong,Zhang Zhenyu,Lin Weifang,et al.Analysis on serious wind turbine generators tripping accident in Northwest China power grid in 2011 and its lessons[J].Power System Technology,2012,36(10):76-80(in Chinese).
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[11]解超,李凤婷,路亮,等.不带并联电抗器的风电场单回送出线自适应三相重合闸策略[J].电网技术,2017,41(11):3492-3500.Xie Chao,Li Fengting,Lu Liang,et al.An adaptive three-phase reclosing scheme for wind farm single circuit outgoing line without shunt reactors[J].Power System Technology,2017,41(11):3492-3500(in Chinese).
[12]Yan X W,Venkataramanan G,Flannery P S,et al.Evaluation of the effect of voltage sags due to grid balanced and unbalanced faults on DFIG wind turbines[J].EPE Journal,2010,20(4):51-61.
[13]郑彬,班连庚,周佩朋,等.合闸750 k V空载变压器引起的系统电压暂降现场实测与计算分析[J].电网技术,2012,36(9):203-208.Zheng Bin,Ban Liangeng,Zhou Peipeng,et al.Analysis on measured and calculated results of system voltage sag caused by energizing750 k V no-load transformer[J].Power System Technology,2012,36(9):203-208(in Chinese).
[14]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.
[15]Djokic S Z,Milanovic J V,Kirschen D S.Sensitivity of AC coil contactors to voltage sags short interruptions and under voltage transients[J].IEEE Trans on Power Delivery,2004,19(3):1299-1307.
[16]孙士云,束洪春,王家永,等.三相重合时序对750 k V输电线路合闸过电压的影响[J].高电压技术,2013,39(12):3059-3068.Sun Shiyun,Shu Hongchun,Wang Jiayong,et al.Influence of three-phase reclosure sequence on closing over-voltage of 750 k Vtransmission line[J].High Voltage Engineering,2013,39(12):3059-3068(in Chinese).
[17]李斌,李永丽,贺家李,等.750 k V输电线路保护与三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 three-phase reclosure of 750 k V transmission lines[J].Automation of Electric Power Systems,2004,28(12):60-64(in Chinese).
[18]孙士云,束洪春,于继来,等.三相重合时序对系统暂态稳定性影响的机理分析[J].电力自动化设备,2009,29(11):10-14.Sun Shiyun,Shu Hongchun,Yu Jilai,et al.Influence of three-phase reclosure sequence on system’s transient stability[J].Electric Power Automation Equipment,2009,29(11):10-14(in Chinese).
[19]束洪春,董俊,孙士云,等.重合闸时序对交直流混联输电系统暂态稳定裕度的影响[J].电力系统自动化,2006,30(19):73-76.Shu Hongchun,Dong Jun,Sun Shiyun,et al.Influence of singlephase reclosing sequence upon transientist ability margin of AC/DChybrid transmission system[J].Automation of Electric Power Systems,2006,30(19):73-76(in Chinese).
[20]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):40-147.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).
[21]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):37-41,46.Liang Zhenfeng,Kang Xiaoning,Yao Lixiao,et al.Discussion on fault components[J].Relay,2007,35(1):37-41,46(in Chinese).
[22]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(in Chinese).
[2]赵晨雪,陶顺,肖湘宁.基于电能质量检测系统电压暂降信息的故障定位估计方法[J].电网技术,2016,40(2):642-648.Zhao Chenxue,Tao Shun,Xiao Xiangning.Fault location estimation based on voltage sag information of PQMS[J].Power System Technology,2016,40(2):642-648(in Chinese).
[3]刘阳,肖先勇,张逸,等.敏感过程电压暂降响应事件及其风险的区间直觉模糊评估[J].电网技术,2015,39(5):1398-1404.Liu Yang,Xiao Xianyong,Zhang Yi,et al.Interval-valued intuitionistic fuzzy assessment on response event of voltage-sag sensitive process and its risk[J].Power System Technology,2015,39(5):1398-1404(in Chinese).
[4]林海雪.电力系统中电压暂降和短时断电[J].供用电,2002,19(1):9-13.Lin Haixue.Voltage dip and short supply interruption in power systems[J].Distribution&Utilization,2002,19(1):9-13(in Chinese).
[5]中国标准化委员会.GB/T 30137-2013电能质量、电压暂降与短时中断[S].北京:中国质检出版社,2014.
[6]欧阳森,刘平,吴彤彤,等.低压脱扣器电压暂降敏感性试验研究[J].电网技术,2015,39(2):575-581.Ouyang Sen,Liu Ping,Wu Tongtong,et al.Experimental research on sensitivity of low voltage releaser to voltage sag[J].Power System Technology,2015,39(2):575-581(in Chinese).
[7]谭骞,徐永海,黄浩,等.不对称电压暂降情况下光伏逆变器输出电流峰值的控制策略[J].电网技术,2015,39(3):601-608.Tan Qian,Xu Yonghai,Huang Hao,et al.A control strategy for peak output current of PV inverter under unbalanced voltage sags[J].Power System Technology,2015,39(3):601-608(in Chinese).
[8]贺益康,胡家兵.双馈异步风力发电机并网运行中的几个热点问题[J].中国电机工程学报,2012,32(27):1-15.He Yikang,Hu Jiabing.Several hot-spot issues associated with the grid-connected operations of wind-turbine driven doubly fed induction generators[J].Proceedings of the CSEE,2012,32(27):1-15(in Chinese).
[9]孙华东,张振宇,林伟芳,等.2011年西北电网风机脱网事故分析及启示[J].电网技术,2012,36(10):76-80.Sun Huadong,Zhang Zhenyu,Lin Weifang,et al.Analysis on serious wind turbine generators tripping accident in Northwest China power grid in 2011 and its lessons[J].Power System Technology,2012,36(10):76-80(in Chinese).
[10]刘欣,郑涛,黄少锋,等.自动重合闸引起风电场连锁脱网的解决策略分析[J].电力系统保护与控制,2015,43(5):51-56.Liu Xin,Zheng Tao,Huang Shaofeng,et al.Analysis on solution of cascade failure caused by automatic reclosing[J].Power System Protection and Control,2015,43(5):51-56(in Chinese).
[11]解超,李凤婷,路亮,等.不带并联电抗器的风电场单回送出线自适应三相重合闸策略[J].电网技术,2017,41(11):3492-3500.Xie Chao,Li Fengting,Lu Liang,et al.An adaptive three-phase reclosing scheme for wind farm single circuit outgoing line without shunt reactors[J].Power System Technology,2017,41(11):3492-3500(in Chinese).
[12]Yan X W,Venkataramanan G,Flannery P S,et al.Evaluation of the effect of voltage sags due to grid balanced and unbalanced faults on DFIG wind turbines[J].EPE Journal,2010,20(4):51-61.
[13]郑彬,班连庚,周佩朋,等.合闸750 k V空载变压器引起的系统电压暂降现场实测与计算分析[J].电网技术,2012,36(9):203-208.Zheng Bin,Ban Liangeng,Zhou Peipeng,et al.Analysis on measured and calculated results of system voltage sag caused by energizing750 k V no-load transformer[J].Power System Technology,2012,36(9):203-208(in Chinese).
[14]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.
[15]Djokic S Z,Milanovic J V,Kirschen D S.Sensitivity of AC coil contactors to voltage sags short interruptions and under voltage transients[J].IEEE Trans on Power Delivery,2004,19(3):1299-1307.
[16]孙士云,束洪春,王家永,等.三相重合时序对750 k V输电线路合闸过电压的影响[J].高电压技术,2013,39(12):3059-3068.Sun Shiyun,Shu Hongchun,Wang Jiayong,et al.Influence of three-phase reclosure sequence on closing over-voltage of 750 k Vtransmission line[J].High Voltage Engineering,2013,39(12):3059-3068(in Chinese).
[17]李斌,李永丽,贺家李,等.750 k V输电线路保护与三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 three-phase reclosure of 750 k V transmission lines[J].Automation of Electric Power Systems,2004,28(12):60-64(in Chinese).
[18]孙士云,束洪春,于继来,等.三相重合时序对系统暂态稳定性影响的机理分析[J].电力自动化设备,2009,29(11):10-14.Sun Shiyun,Shu Hongchun,Yu Jilai,et al.Influence of three-phase reclosure sequence on system’s transient stability[J].Electric Power Automation Equipment,2009,29(11):10-14(in Chinese).
[19]束洪春,董俊,孙士云,等.重合闸时序对交直流混联输电系统暂态稳定裕度的影响[J].电力系统自动化,2006,30(19):73-76.Shu Hongchun,Dong Jun,Sun Shiyun,et al.Influence of singlephase reclosing sequence upon transientist ability margin of AC/DChybrid transmission system[J].Automation of Electric Power Systems,2006,30(19):73-76(in Chinese).
[20]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):40-147.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).
[21]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):37-41,46.Liang Zhenfeng,Kang Xiaoning,Yao Lixiao,et al.Discussion on fault components[J].Relay,2007,35(1):37-41,46(in Chinese).
[22]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(in Chinese).