特高压直流输电系统并联融冰运行方式的控制保护策略
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摘要
介绍了并联融冰运行方式的拓扑结构,分析了现有并联融冰运行方式的控制策略,基于成熟的单阀组控制理论和策略,提出了一种将两个并联的换流器进行统一控制的新型控制策略,详细阐述了该控制策略的实现方法。全面梳理了并联融冰运行方式对直流保护功能的影响,分析了相关保护功能的应对策略,然后对关键保护功能提出了新的保护判断逻辑。新的控制保护策略通过了实时数字仿真器(RTDS)仿真试验和现场调试试验,验证了其可行性和可靠性。
The topology of parallel de-icing operation mode is described,and the existing control strategy of parallel de-icing operation mode is analyzed.Then a new unified control strategy of two parallel converters is proposed based on mature single converter control theory and strategy,with the implementation of the new control strategy elaborated.A comprehensive overview about the influence of the parallel de-icing operation mode on DC protection is given,and the coping strategies of the relevant protection are proposed.The new protection criterion logic on the key protection function is put forward.The new control and protection strategies have passed the real-time digital simulator(RTDS)test and on-site tests as proof of its feasibility and reliability.
The topology of parallel de-icing operation mode is described,and the existing control strategy of parallel de-icing operation mode is analyzed.Then a new unified control strategy of two parallel converters is proposed based on mature single converter control theory and strategy,with the implementation of the new control strategy elaborated.A comprehensive overview about the influence of the parallel de-icing operation mode on DC protection is given,and the coping strategies of the relevant protection are proposed.The new protection criterion logic on the key protection function is put forward.The new control and protection strategies have passed the real-time digital simulator(RTDS)test and on-site tests as proof of its feasibility and reliability.
引文
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[16]吴庆范,黄金海,张爱玲,等.基于HCM3000平台的高岭扩建工程直流极保护系统实施策略[J].东北电力技术,2012,33(10):35-40.WU Qingfan,HUANG Jinhai,ZHANG Ailing,el al.DC protection system implementation strategy of GaolingⅡproject based on HCM3000platform[J].Northeast Electric Power Technology,2012,33(10):35-40.
[17]赵婉君.高压直流输电工程技术[M].北京:中国电力出版社,2004.
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[19]宋国兵,高淑萍,蔡新雷,等.高压直流输电线路继电保护技术综述[J].电力系统自动化,2012,36(22):123-129.SONG Guobing,GAO Shuping,CAI Xinlei,et al.Survey of relay protection technology for HVDC transmission lines[J].Automation of Electric Power Systems,2012,36(22):123-129.
[20]胡铭,田杰,曹冬明,等.特高压直流输电控制系统结构配置分析[J].电力系统自动化,2008,32(24):88-92.HU Ming,TIAN Jie,CAO Dongming,et al.Analysis of structure and configuration for UHVDC transmission control system[J].Automation of Electric Power Systems,2008,32(24):88-92.
[2]马玉龙,徐玲玲,石岩,等.三广直流工程融冰运行方式仿真试验[J].电网技术,2008,32(19):22-25.MA Yulong,XU Lingling,SHI Yan,et al.Simulation test ofice-melting operation mode for HVDC power transmission project from the Three Gorges hydropower station to Guangdong[J].Power System Technology,2008,32(19):22-25.
[3]张帆,徐桂芝,荆平,等.直流融冰系统保护配置与操作策略[J].电网技术,2010,34(2):169-173.ZHANG Fan,XU Guizhi,JING Ping,et al.Protection configuration for DC ice-melting system and its operation strategies[J].Power System Technology,2010,34(2):169-173.
[4]庞广恒,曾南超,杨万开.特高压直流系统融冰运行方式试验与工程调试[J].电网技术,2014,38(1):22-27.PANG Guangheng,ZENG Nanchao,YANG Wankai.Test of de-icing operating mode for UHVDC power transmission system and its practice in engineering commissioning[J].Power System Technology,2014,38(1):22-27.
[5]杨鹏,李新年,王军波.复奉±800kV特高压直流输电工程换流器并联融冰试验问题分析[J].电工技术,2013(8):28-30.
[6]蒲莹,舒畅,蒋维勇,等.宁东—山东±660kV直流输电示范工程二次系统实时仿真试验及关键问题对策[J].电网技术,2011,35(1):76-83.PU Ying,SHU Chang,JIANG Weiyong,el al.Real-time simulation test for secondary system of±660kV HVDC power transmission demonstration project from Ningdong to Shandong and countermeasures to key problems[J].Power System Technology,2011,35(1):76-83.
[7]张爱玲.溪洛渡送电广东同塔双回直流输电工程控制保护策略研究[J].电力系统保护与控制,2011,39(9):72-76.ZHANG Ailing.Study of control and protection strategies for Xiluodu-Guangdong double HVDC systems erected on the same tower[J].Power System Protection and Control,2011,39(9):72-76.
[8]黄金海,冯雷,李曼丽,等.糯扎渡送电广东特高压直流输电工程直流滤波器C1不平衡保护研究[J].电力系统保护与控制,2012,40(15):46-51.HUANG Jinhai,FENG Lei,LI Manli,el al.Study of DC filter C1unbalance protection for Nuozhadu-Guangdong ultra high voltage direct current transmission project[J].Power System Protection and Control,2012,40(15):46-51.
[9]吴庆范,黄金海,张爱玲,等.一种新型三取二逻辑装置及配置策略在高岭背靠背扩建工程中的应用[J].电力系统保护与控制,2014,42(2):121-126.WU Qingfan,HUANG Jinhai,ZHANG Ailing,el al.A new device with“selecting 2from 3”logic and its configuration strategy applied in Gaoling back-to-backⅡproject[J].Power System Protection and Control,2014,42(2):121-126.
[10]张保会,孔飞,张嵩,等.高压直流输电线路单端暂态量保护装置的技术开发[J].中国电机工程学报,2013,33(4):179-185.ZHANG Baohui,KONG Fei,ZHANG Song,el al.Technical development of non-unit protection devices based on transient signals for HVDC transmission lines[J].Proceedings of the CSEE,2013,33(4):179-185.
[11]舒印彪,刘泽洪,高理应,等.±800kV 6 400 MW特高压直流输电工程设计[J].电网技术,2006,30(1):1-8.SHU Yinbiao,LIU Zehong,GAO Liying,et al.A preliminary exploration for design of±800 kV UHVDC project with transmission capacity of 6 400 MW[J].Power System Technology,2006,30(1):1-8.
[12]刘振亚,舒印彪,张文亮,等.直流输电系统电压等级序列研究[J].中国电机工程学报,2008,28(10):1-8.LIU Zhenya,SHU Yinbiao,ZHANG Wenliang,et al.Study on voltage class series for HVDC transmission system[J].Proceedings of the CSEE,2008,28(10):1-8.
[13]吴庆范,黄金海,张爱玲,等.团林换流站电压突变量保护研究[J].南方电网技术,2014,8(4):37-41.WU Qingfan,HUANG Jinhai,ZHANG Ailing,et al.Research of undervoltage sensing protection at Tuanlin converter station[J].Southern Power System Technology,2014,8(4):37-41.
[14]袁清云.特高压直流输电技术现状及在我国的应用前景[J].电网技术,2005,29(14):1-3.YUAN Qingyun.Present state and application prospect of ultra HVDC transmission in China[J].Power System Technology,2005,29(14):1-3.
[15]杨万开,印永华,曾南超,等.特高压直流输电工程系统调试研究[J].中国电机工程学报,2009,29(22):83-87.YANG Wankai,YIN Yonghua,ZENG Nanchao,et al.Study on commissioning test program of UHVDC project system[J].Proceedings of the CSEE,2009,29(22):83-87.
[16]吴庆范,黄金海,张爱玲,等.基于HCM3000平台的高岭扩建工程直流极保护系统实施策略[J].东北电力技术,2012,33(10):35-40.WU Qingfan,HUANG Jinhai,ZHANG Ailing,el al.DC protection system implementation strategy of GaolingⅡproject based on HCM3000platform[J].Northeast Electric Power Technology,2012,33(10):35-40.
[17]赵婉君.高压直流输电工程技术[M].北京:中国电力出版社,2004.
[18]朱韬析,武诚,王超.交流系统故障对直流输电系统的影响及改进建议[J].电力系统自动化,2009,33(1):93-98.ZHU Taoxi,WU Cheng,WANG Chao.Influence of AC system fault on HVDC system and improvement suggestions[J].Automation of Electric Power Systems,2009,33(1):93-98.
[19]宋国兵,高淑萍,蔡新雷,等.高压直流输电线路继电保护技术综述[J].电力系统自动化,2012,36(22):123-129.SONG Guobing,GAO Shuping,CAI Xinlei,et al.Survey of relay protection technology for HVDC transmission lines[J].Automation of Electric Power Systems,2012,36(22):123-129.
[20]胡铭,田杰,曹冬明,等.特高压直流输电控制系统结构配置分析[J].电力系统自动化,2008,32(24):88-92.HU Ming,TIAN Jie,CAO Dongming,et al.Analysis of structure and configuration for UHVDC transmission control system[J].Automation of Electric Power Systems,2008,32(24):88-92.