交流系统故障下高压直流输电晶闸管触发监测单元储能方式
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摘要
晶闸管触发监测(TTM)单元是直流输电换流阀的核心器件之一,用于实现阀控系统和换流阀间信号的光电转换,完成换流阀的触发与保护,其性能直接影响直流输电工程的可靠性。文中给出了具有高电位复合取能功能的TTM的功能设计框图,研究交流系统故障下TTM工作状态对高压直流输电系统的影响,提出TTM储能电路的设计方法,并以酒泉—湖南±800 kV/5 000 A直流工程参数为例,对TTM储能电路进行了理论计算、仿真分析和试验研究。以该成果为核心技术的A5000型换流阀TTM已应用于多个直流输电工程。
The thyristor triggering and monitoring(TTM) unit is one of core devices of HVDC converter valve, which is used for photoelectric conversion of signals between valve control system and converter valve. TTM unit can realize the triggering and protection of converter valve, and its performance directly influences the reliability of HVDC transmission project. This paper presents the functional design block diagram of the TTM with composite energy harvesting function under the high potential mode. And the effect of the work state of TTM on HVDC transmission system with fault of AC system is analyzed. Then a design method of energy storage circuit of TTM is proposed. Finally, the effectiveness of TTM with energy storage circuit is verified through theoretical calculation, simulation and experimental based on ±800 kV/5 000 A Jiuquan-Hunan HVDC project. The TTM of A5000 converter valve with this achievement as the core technology has been applied to multiple DC transmission projects.
The thyristor triggering and monitoring(TTM) unit is one of core devices of HVDC converter valve, which is used for photoelectric conversion of signals between valve control system and converter valve. TTM unit can realize the triggering and protection of converter valve, and its performance directly influences the reliability of HVDC transmission project. This paper presents the functional design block diagram of the TTM with composite energy harvesting function under the high potential mode. And the effect of the work state of TTM on HVDC transmission system with fault of AC system is analyzed. Then a design method of energy storage circuit of TTM is proposed. Finally, the effectiveness of TTM with energy storage circuit is verified through theoretical calculation, simulation and experimental based on ±800 kV/5 000 A Jiuquan-Hunan HVDC project. The TTM of A5000 converter valve with this achievement as the core technology has been applied to multiple DC transmission projects.
引文
[1] 刘振亚.特高压直流电气设备[M].北京:中国电力出版社,2009.LIU Zhenya.UHVDC electrical equipment[M].Beijing:China Electric Power Press,2009.
[2] 赵畹君.高压直流输电工程技术[M].2版.北京:中国电力出版社,2011.ZHAO Wanjun.HVDC transmission engineering technology[M].2nd ed.Beijing:China Electric Power Press,2011.
[3] 李立浧.特高压直流输电的技术特点和工程应用[J].电力系统自动化,2005,29(24):5-6.LI Lichen.Technical characteristics and engineering application of HVDC power transmission[J].Automation of Electric Power Systems,2005,29(24):5-6.
[4] 袁清云.HVDC换流阀及其触发与在线监测系统[M].北京:中国电力出版社,1999.YUAN Qingyun.HVDC converter valve and trigger unit and online monitoring system[M].Beijing:China Electric Power Press,1999.
[5] 任孟干.高压阀光电触发与在线监测系统的应用研究[D].北京:中国电力科学研究院,2002.REN Menggan.Study on the photoelectric firing and monitoring system for high voltage thyristor valves[D].Beijing:China Electric Power Research Institute,2002.
[6] ABB Switzerland Ltd.Gate-drive recommendation for phase control and bi-directionally controlled thyristors[EB/OL].[2016-06-29].http://www.5scomponents.com/pdf/recommendations_for_phase_thyristors.pdf.
[7] 张禄琦,周家启,刘洋,等.高压直流输电工程可靠性指标统计分析[J].电力系统自动化,2007,31(19):95-99.ZHANG Luqi,ZHOU Jiaqi,LIU Yang,et al.Statistical analysis on reliability indices for HVDC transmission project[J].Automation of Electric Power Systems,2007,31(19):95-99.
[8] 周会高,许钒,黄超,等.PSCAD在晶闸管取能回路分析中的应用[J].高压电器,2005,41(4):270-272.ZHOU Huigao,XU Fan,HUANG Chao,et al.Application of PSCAD in analysis of thyristor energy storage circuit[J].High Voltage Apparatus,2005,41(4):270-272.
[9] 任小静,王潇,刘飞超,等.两种特高压直流输电用晶闸管控制单元工作原理分析对比[J].高压电器,2015,51(7):74-77.REN Xiaojing,WANG Xiao,LIU Feichao,et al.Comparative analysis on operating principles of the two thyristor control unit in UHVDC transmission[J].High Voltage Apparatus,2015,51(7):74-77.
[10] LIU Jun,HAO Xudong,WANG Xu,et al.Application of thyristor controlled phase shifting transformer excitation impedance switching control to suppress short-circuit fault current level[J].Journal of Modern Power Systems and Clean Energy,2018,6(4):821-832.
[11] 刘杰,张静,曹均正,等.直流输电换流阀阻尼系统特性研究[J].中国电机工程学报,2012,32(30):16-22.LIU Jie,ZHANG Jing,CAO Junzheng,et al.Research of damping system characteristics for HVDC converter valves[J].Proceedings of the CSEE,2012,32(30):16-22.
[12] 蓝元良,汤广福,印永华,等.串联晶闸管反向恢复暂态过程的研究[J].电网技术,2006,30(16):15-19.LAN Yuanliang,TANG Guangfu,YIN Yonghua.Study on transient of reverse recovery of series thyristors[J].Power System Technology,2006,30(16):15-19.
[13] 白光亚.光触发晶闸管换流阀技术及其应用[J].高电压技术,2004,30(11):55-56.BAI Guangya.Light triggered thyristor and its application[J].High Voltage Engineering,2004,30(11):55-56.
[14] 马玉龙,肖湘宁,姜旭.交流系统接地故障对HVDC的影响分析[J].中国电机工程学报,2006,26(11):144-149.MA Yulong,XIAO Xiangning,JIANG Xu.Analysis of the impact of AC system single-phase earth fault on HVDC[J].Proceedings of the CSEE,2006,26(11):144-149.
[15] 张松,李兰芳,赵刚,等.TCT式可控并联电抗器晶闸管阀取能方式分析[J].电力系统自动化,2016,40(8):98-102.ZHANG Song,LI Lanfang,ZHAO Gang,et al.Analysis on thyristor energy-gaining of thyristor controlled transformer type controllable shunt reactors[J].Automation of Electric Power Systems,2016,40(8):98-102.
[2] 赵畹君.高压直流输电工程技术[M].2版.北京:中国电力出版社,2011.ZHAO Wanjun.HVDC transmission engineering technology[M].2nd ed.Beijing:China Electric Power Press,2011.
[3] 李立浧.特高压直流输电的技术特点和工程应用[J].电力系统自动化,2005,29(24):5-6.LI Lichen.Technical characteristics and engineering application of HVDC power transmission[J].Automation of Electric Power Systems,2005,29(24):5-6.
[4] 袁清云.HVDC换流阀及其触发与在线监测系统[M].北京:中国电力出版社,1999.YUAN Qingyun.HVDC converter valve and trigger unit and online monitoring system[M].Beijing:China Electric Power Press,1999.
[5] 任孟干.高压阀光电触发与在线监测系统的应用研究[D].北京:中国电力科学研究院,2002.REN Menggan.Study on the photoelectric firing and monitoring system for high voltage thyristor valves[D].Beijing:China Electric Power Research Institute,2002.
[6] ABB Switzerland Ltd.Gate-drive recommendation for phase control and bi-directionally controlled thyristors[EB/OL].[2016-06-29].http://www.5scomponents.com/pdf/recommendations_for_phase_thyristors.pdf.
[7] 张禄琦,周家启,刘洋,等.高压直流输电工程可靠性指标统计分析[J].电力系统自动化,2007,31(19):95-99.ZHANG Luqi,ZHOU Jiaqi,LIU Yang,et al.Statistical analysis on reliability indices for HVDC transmission project[J].Automation of Electric Power Systems,2007,31(19):95-99.
[8] 周会高,许钒,黄超,等.PSCAD在晶闸管取能回路分析中的应用[J].高压电器,2005,41(4):270-272.ZHOU Huigao,XU Fan,HUANG Chao,et al.Application of PSCAD in analysis of thyristor energy storage circuit[J].High Voltage Apparatus,2005,41(4):270-272.
[9] 任小静,王潇,刘飞超,等.两种特高压直流输电用晶闸管控制单元工作原理分析对比[J].高压电器,2015,51(7):74-77.REN Xiaojing,WANG Xiao,LIU Feichao,et al.Comparative analysis on operating principles of the two thyristor control unit in UHVDC transmission[J].High Voltage Apparatus,2015,51(7):74-77.
[10] LIU Jun,HAO Xudong,WANG Xu,et al.Application of thyristor controlled phase shifting transformer excitation impedance switching control to suppress short-circuit fault current level[J].Journal of Modern Power Systems and Clean Energy,2018,6(4):821-832.
[11] 刘杰,张静,曹均正,等.直流输电换流阀阻尼系统特性研究[J].中国电机工程学报,2012,32(30):16-22.LIU Jie,ZHANG Jing,CAO Junzheng,et al.Research of damping system characteristics for HVDC converter valves[J].Proceedings of the CSEE,2012,32(30):16-22.
[12] 蓝元良,汤广福,印永华,等.串联晶闸管反向恢复暂态过程的研究[J].电网技术,2006,30(16):15-19.LAN Yuanliang,TANG Guangfu,YIN Yonghua.Study on transient of reverse recovery of series thyristors[J].Power System Technology,2006,30(16):15-19.
[13] 白光亚.光触发晶闸管换流阀技术及其应用[J].高电压技术,2004,30(11):55-56.BAI Guangya.Light triggered thyristor and its application[J].High Voltage Engineering,2004,30(11):55-56.
[14] 马玉龙,肖湘宁,姜旭.交流系统接地故障对HVDC的影响分析[J].中国电机工程学报,2006,26(11):144-149.MA Yulong,XIAO Xiangning,JIANG Xu.Analysis of the impact of AC system single-phase earth fault on HVDC[J].Proceedings of the CSEE,2006,26(11):144-149.
[15] 张松,李兰芳,赵刚,等.TCT式可控并联电抗器晶闸管阀取能方式分析[J].电力系统自动化,2016,40(8):98-102.ZHANG Song,LI Lanfang,ZHAO Gang,et al.Analysis on thyristor energy-gaining of thyristor controlled transformer type controllable shunt reactors[J].Automation of Electric Power Systems,2016,40(8):98-102.