基于GOOSE网络的智能变电站变压器纵差保护方案
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摘要
变压器纵差保护启动电流需要躲过正常运行时的不平衡电流,而不平衡电流主要由变压器有载调压分接开关挡位调节引起。当有载调压分接开关挡位调节范围大时,变压器纵差保护启动电流定值整定较高,影响了差动保护的灵敏度。文中提出通过智能变电站通用面向对象变电站事件(GOOSE)网络获取变压器调压分接开关的挡位信息,再根据调压分接开关的实际挡位自动调整纵差保护的平衡系数,消除变压器正常运行时挡位调节引起的不平衡电流。同时提出基于GOOSE网络的纵差保护整定方法,降低差动保护的启动电流和比率制动系数,并对纵差保护的动作特性进行了分析改进。实验结果表明,方案可提高变压器纵差保护的灵敏性及速动性。
For longitudinal differential protection of transformer,the starting current should avoid the influence of unbalanced current which is caused by the regulation of switch gear for on-load tap changer during the normal operation.When adjusting the wide range of switch gear,the sensitivity of differential protection would be influenced by high setting of the starting current.It is proposed that the gear position information could be obtained through the GOOSE network for the smart substation,and then the balance coefficient of the differential protection is adjusted automatically based on its actual gear position to eliminate the unbalanced current caused by gear position adjustment during the normal operation.Meanwhile,the tuning method of differential protection based on GOOSE network is proposed,which reduces the starting current and ratio restraint coefficient and improves the operation characteristics of differential protection.The simulation results show that the improved scheme can enhance the sensitivity and quickness of the differential protection of transformer.
For longitudinal differential protection of transformer,the starting current should avoid the influence of unbalanced current which is caused by the regulation of switch gear for on-load tap changer during the normal operation.When adjusting the wide range of switch gear,the sensitivity of differential protection would be influenced by high setting of the starting current.It is proposed that the gear position information could be obtained through the GOOSE network for the smart substation,and then the balance coefficient of the differential protection is adjusted automatically based on its actual gear position to eliminate the unbalanced current caused by gear position adjustment during the normal operation.Meanwhile,the tuning method of differential protection based on GOOSE network is proposed,which reduces the starting current and ratio restraint coefficient and improves the operation characteristics of differential protection.The simulation results show that the improved scheme can enhance the sensitivity and quickness of the differential protection of transformer.
引文
[1]陈国平,王德林,裘愉涛,等.继电保护面临的挑战与展望[J].电力系统自动化,2017,41(16):1-11.DOI:10.7500/AEPS20170219004.CHEN Guoping,WANG Delin,QIU Yutao,et al.Challenges and development prospects of relay protection technology[J].Automation of Electric Power Systems,2017,41(16):1-11.DOI:10.7500/AEPS20170219004.
[2]王玉玲,刘宇,樊占峰,等.有限集中式就地化母线保护方案[J].电力系统自动化,2017,41(16):35-40.DOI:10.7500/AEPS20170116002.WANG Yuling,LIU Yu,FAN Zhanfeng,et al.Scheme of finitely concentrated outdoor installation bus protection[J].Automation of Electric Power Systems,2017,41(16):35-40.DOI:10.7500/AEPS20170116002.
[3]王德林,裘愉涛,凌光,等.变电站即插即用就地化保护的应用方案和经济性比较[J].电力系统自动化,2017,41(16):12-19.DOI:10.7500/AEPS20170215010.WANG Delin,QIU Yutao,LING Guang,et al.Application scheme and economical comparison of plug&play and outdoor installation protection in substation[J].Automation of Electric Power Systems,2017,41(16):12-19.DOI:10.7500/AEPS20170215010.
[4]邓茂军,樊占峰,倪传坤,等.就地化分布式变压器保护方案研究[J].电力系统保护与控制,2017,45(9):95-100.DENG Maojun,FAN Zhanfeng,NI Chuankun,et al.Research on scheme of outdoor installation distributed transformer protection[J].Power System Protection and Control,2017,45(9):95-100.
[5]沈晓凡,舒治淮,刘宇,等.2008年国家电网公司继电保护装置运行情况[J].电网技术,2010,34(3):173-177.SHEN Xiaofan,SHU Zhihuai,LIU Yu,et al.Statistics and analysis on operation situation of protective relayings of State Grid Corporation of China in 2008[J].Power System Technology,2010,34(3):173-177.
[6]栗磊,宋小会,刘星,等.串变调压电炉变压器差动保护研究[J].电力系统保护与控制,2014,42(16):118-121.LI Lei,SONG Xiaohui,LIU Xing,et al.Research on differential protection of the furnace transformer which adopts series transformer used for voltage-regulation[J].Power System Protection and Control,2014,42(16):118-121.
[7]姚晴林,李瑞生,刘星,等.电炉变压器成套保护装置研制[J].电力系统自动化,2012,36(17):95-102.YAO Qinglin,LI Ruisheng,LIU Xing,et al.Development of microprocessor-based assembly protection equipment for furnace transformer[J].Automation of Electric Power Systems,2012,36(17):95-102.
[8]李岩军,周春霞,肖远清,等.特高压有载调压变压器差动保护特性分析[J].中国电力,2014,47(9):112-117.LI Yanjun,ZHOU Chunxia,XIAO Yuanqing,et al.Analysis of differential protection characteristic for on-load-tap-changer transformer of UHV[J].Electric Power,2014,47(9):112-117.
[9]邓茂军,孙振文,马和科,等.1 000kV特高压变压器保护方案[J].电力系统自动化,2015,39(10):168-173.DENG Maojun,SUN Zhenwen,MA Heke,et al.Protection scheme for 1 000 kV UHV transformer[J].Automation of Electric Power Systems,2015,39(10):168-173.
[10]倪益民,杨宇,樊陈,等.智能变电站二次设备集成方案讨论[J].电力系统自动化,2014,38(3):194-199.NI Yimin,YANG Yu,FAN Chen,et al.Discussion on integration of secondary device in smart substation[J].Automation of Electric Power Systems,2014,38(3):194-199.
[11]李瑞生,李燕斌,周逢权.智能变电站功能架构及设计原则[J].电力系统保护与控制,2010,38(21):24-27.LI Ruisheng,LI Yanbin,ZHOU Fengquan.The functional frame and design principles of smart substation[J].Power System Protection and Control,2010,38(21):24-27.
[12]宋璇坤,李敬如,肖智宏,等.新一代智能变电站整体设计方案[J].电力建设,2012,33(11):1-6.SONG Xuankun,LI Jingru,XIAO Zhihong,et al.Overall design scheme for new generation intelligent substation[J].Electric Power Construction,2012,33(11):1-6.
[13]肖燕.新一代智能变电站信息流架构设计[J].中国电机工程学报,2016,36(5):1245-1251.XIAO Yan.Design of information flow scheme for new smart substation[J].Proceedings of the CSEE,2016,36(5):1245-1251.
[14]邓茂军,吴起,陈亮,等.基于电子式互感器的电炉变压器差动保护研究[J].电力系统保护与控制,2011,39(9):114-118.DENG Maojun,WU Qi,CHEN Liang,et al.Study of furnace transformer differential protection based on electronic transformer[J].Power System Protection and Control,2011,39(9):114-118.
[15]王维俭.电气主设备继电保护原理与应用[M].北京:中国电力出版社,2002.WANG Weijian.Principle and application of electric power equipment protection[M].Beijing:China Electric Power Press,2002.
[2]王玉玲,刘宇,樊占峰,等.有限集中式就地化母线保护方案[J].电力系统自动化,2017,41(16):35-40.DOI:10.7500/AEPS20170116002.WANG Yuling,LIU Yu,FAN Zhanfeng,et al.Scheme of finitely concentrated outdoor installation bus protection[J].Automation of Electric Power Systems,2017,41(16):35-40.DOI:10.7500/AEPS20170116002.
[3]王德林,裘愉涛,凌光,等.变电站即插即用就地化保护的应用方案和经济性比较[J].电力系统自动化,2017,41(16):12-19.DOI:10.7500/AEPS20170215010.WANG Delin,QIU Yutao,LING Guang,et al.Application scheme and economical comparison of plug&play and outdoor installation protection in substation[J].Automation of Electric Power Systems,2017,41(16):12-19.DOI:10.7500/AEPS20170215010.
[4]邓茂军,樊占峰,倪传坤,等.就地化分布式变压器保护方案研究[J].电力系统保护与控制,2017,45(9):95-100.DENG Maojun,FAN Zhanfeng,NI Chuankun,et al.Research on scheme of outdoor installation distributed transformer protection[J].Power System Protection and Control,2017,45(9):95-100.
[5]沈晓凡,舒治淮,刘宇,等.2008年国家电网公司继电保护装置运行情况[J].电网技术,2010,34(3):173-177.SHEN Xiaofan,SHU Zhihuai,LIU Yu,et al.Statistics and analysis on operation situation of protective relayings of State Grid Corporation of China in 2008[J].Power System Technology,2010,34(3):173-177.
[6]栗磊,宋小会,刘星,等.串变调压电炉变压器差动保护研究[J].电力系统保护与控制,2014,42(16):118-121.LI Lei,SONG Xiaohui,LIU Xing,et al.Research on differential protection of the furnace transformer which adopts series transformer used for voltage-regulation[J].Power System Protection and Control,2014,42(16):118-121.
[7]姚晴林,李瑞生,刘星,等.电炉变压器成套保护装置研制[J].电力系统自动化,2012,36(17):95-102.YAO Qinglin,LI Ruisheng,LIU Xing,et al.Development of microprocessor-based assembly protection equipment for furnace transformer[J].Automation of Electric Power Systems,2012,36(17):95-102.
[8]李岩军,周春霞,肖远清,等.特高压有载调压变压器差动保护特性分析[J].中国电力,2014,47(9):112-117.LI Yanjun,ZHOU Chunxia,XIAO Yuanqing,et al.Analysis of differential protection characteristic for on-load-tap-changer transformer of UHV[J].Electric Power,2014,47(9):112-117.
[9]邓茂军,孙振文,马和科,等.1 000kV特高压变压器保护方案[J].电力系统自动化,2015,39(10):168-173.DENG Maojun,SUN Zhenwen,MA Heke,et al.Protection scheme for 1 000 kV UHV transformer[J].Automation of Electric Power Systems,2015,39(10):168-173.
[10]倪益民,杨宇,樊陈,等.智能变电站二次设备集成方案讨论[J].电力系统自动化,2014,38(3):194-199.NI Yimin,YANG Yu,FAN Chen,et al.Discussion on integration of secondary device in smart substation[J].Automation of Electric Power Systems,2014,38(3):194-199.
[11]李瑞生,李燕斌,周逢权.智能变电站功能架构及设计原则[J].电力系统保护与控制,2010,38(21):24-27.LI Ruisheng,LI Yanbin,ZHOU Fengquan.The functional frame and design principles of smart substation[J].Power System Protection and Control,2010,38(21):24-27.
[12]宋璇坤,李敬如,肖智宏,等.新一代智能变电站整体设计方案[J].电力建设,2012,33(11):1-6.SONG Xuankun,LI Jingru,XIAO Zhihong,et al.Overall design scheme for new generation intelligent substation[J].Electric Power Construction,2012,33(11):1-6.
[13]肖燕.新一代智能变电站信息流架构设计[J].中国电机工程学报,2016,36(5):1245-1251.XIAO Yan.Design of information flow scheme for new smart substation[J].Proceedings of the CSEE,2016,36(5):1245-1251.
[14]邓茂军,吴起,陈亮,等.基于电子式互感器的电炉变压器差动保护研究[J].电力系统保护与控制,2011,39(9):114-118.DENG Maojun,WU Qi,CHEN Liang,et al.Study of furnace transformer differential protection based on electronic transformer[J].Power System Protection and Control,2011,39(9):114-118.
[15]王维俭.电气主设备继电保护原理与应用[M].北京:中国电力出版社,2002.WANG Weijian.Principle and application of electric power equipment protection[M].Beijing:China Electric Power Press,2002.