±500kV柔性直流阀段等效试验设计和控制
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摘要
对±500kV柔性直流多电平换流器桥臂的工作原理进行了分析,在对阀段稳态工况和直流侧短路工况的基本特征进行总结的基础上,基于稳态和短路状态下电压应力、电流应力和热应力的等效工作原理,设计了一种功率模块试验装置等效试验电路,可满足不同功率等级的至少一个功率子模块在稳态工况和短路工况下的试验要求,针对该等效试验电路,在模型分析的基础上设计了满足试验要求的控制策略,以及设计了基于三层结构的阀段控制保护系统。搭建了一个五模块的2组阀段系统组成的2个桥臂,进行了相关的试验验证。试验结果表明,所提功率模块试验装置等效试验电路以及阀段控制保护系统能够满足试验要求,对多组阀段系统的控制方法是有效的。
The working principle of multilevel converter arm bridge in ±500kV flexible HVDC is analyzed,and the basic features of valve section steady-state operating conditions and the DC-side short circuit operating conditions are summarized. Based on the above analysis and the equivalent working principle of voltage stress,current stress and thermal stress of valve section in the steady-state and the short circuit operation conditions,a kind of equivalent test device circuit of power module is designed,which satisfies the requirement of the test with at least one power module of different power levels in steady-state and the short circuit operation conditions. In view of the equivalent test circuit,its control strategy is designed based on the analysis of model,and the protection and control system of the valve section based on a three-layer structure is designed. Two bridge arms composed of a five-module two-valve section system are built,and relevant tests are carried out. The test results show that the proposed equivalent test circuit of the power module test device and protection and control system of the valve section meet the test requirements,and the control method of the multi-valve section system is effective.
The working principle of multilevel converter arm bridge in ±500kV flexible HVDC is analyzed,and the basic features of valve section steady-state operating conditions and the DC-side short circuit operating conditions are summarized. Based on the above analysis and the equivalent working principle of voltage stress,current stress and thermal stress of valve section in the steady-state and the short circuit operation conditions,a kind of equivalent test device circuit of power module is designed,which satisfies the requirement of the test with at least one power module of different power levels in steady-state and the short circuit operation conditions. In view of the equivalent test circuit,its control strategy is designed based on the analysis of model,and the protection and control system of the valve section based on a three-layer structure is designed. Two bridge arms composed of a five-module two-valve section system are built,and relevant tests are carried out. The test results show that the proposed equivalent test circuit of the power module test device and protection and control system of the valve section meet the test requirements,and the control method of the multi-valve section system is effective.
引文
[1]文安,邓旭,魏承志,等.柔性直流输电系统交直流并列运行与孤岛运行方式间的切换控制[J].电力自动化设备,2014,34(7):99-106.WEN An,DENG Xu,WEI Chengzhi,et al. Switching control between AC-DC parallel and islanded operations of VSC-HVDC transmission system[J]. Electric Power Automation Equipment,2014,34(7):99-106.
[2]管敏渊,徐政. MMC型柔性直流输电系统无源网络供电的直接电压控制[J].电力自动化设备,2012,32(12):1-5.GUAN Minyuan,XU Zheng. Direct voltage control of MMC-based VSC-HVDC system for passive networks[J]. Electric Power Automation Equipment,2012,32(12):1-5.
[3]文俊,张一工,韩民晓,等.轻型直流输电:一种新一代的HVDC技术[J].电网技术,2003,27(1):47-51.WEN Jun,ZHANG Yigong,HAN Mingxiao,et al. HVDC based on voltage source converter a new generation of HVDC technique[J].Power System Technology,2003,27(1):47-51.
[4]李庚银,吕鹏飞,李广凯,等.轻型高压直流输电技术的发展与展望[J].电力系统自动化,2003,27(4):77-81.LI Gengyin,LPengfei,LI Guangkai,et al. Development and prospects for HVDC Light[J]. Automation of Electric Power Systems,2003,27(4):77-81.
[5]高冲,贺之渊,王秀环,等.厦门±320 k V柔性直流输电工程等效试验技术[J].智能电网,2016,4(3):257-262.GAO Chong,HE Zhiyuan,WANG Xiuhuan,et al. Equivalent test technology for±320 kV Xiamen flexible HVDC transmission project[J]. Smart Grid,2016,4(3):257-262.
[6]刘栋,汤广福,贺之渊,等.模块化多电平柔性直流输电数字-模拟混合实时仿真技术[J].电力自动化设备,2013,33(2):68-73.LIU Dong,TANG Guangfu,HE Zhiyuan,et al. Hybrid real-time simulation technology for MMC-HVDC[J]. Electric Power Automation Equipment,2013,33(2):68-73.
[7]吴亚楠,汤广福,查鲲鹏,等.模块化多电平HVDC换流阀运行试验主回路数学模型及参数设计[J].电网技术,2013,37(1):65-70.WU Yanan,TANG Guangfu,ZHA Kunpeng,et al. Mathematical model and parameter design of main circuit for operational test of modular multi-level HVDC converter valves[J]. Power System Technology,2013,37(1):65-70.
[8]汤广福,温家良,贺之渊,等.大功率电力电子装置等效试验方法及其在电力系统中的应用[J].中国电机工程学报,2008,28(36):1-9.TANG Guangfu,WEN Jialiang,HE Zhiyuan,et al. Equivalent testing approach and its application in power system for high power electronics equipment[J]. Proceedings of the CSEE,2008,28(36):1-9.
[9]查鲲鹏,汤广福,温家良,等.灵活用于SVC阀和HVDC阀运行试验的新型联合试验电路[J].电力系统自动化,2005,29(17):72-75.ZHA Kunpeng,TANG Guangfu,WEN Jialiang,et al. A new synthe-tic test equipment for the operational test of SVC and HVDC valves[J]. Automation of Electric Power Systems,2005,29(17):72-75.
[10]吴亚楠,吕天光,汤广福,等.模块化多电平VSC-HVDC换流阀的运行试验方法[J].中国电机工程学报,2012,32(30):8-15.WU Yanan,LTianguang,TANG Guangfu,et al. Operational test method for VSC-HVDC valves based on modular multi-level converter[J]. Proceedings of the CSEE,2012,32(30):8-15.
[11]王姗姗,周孝信,汤广福,等.模块化多电平换流器HVDC直流双极短路子模块过电流分析[J].中国电机工程学报,2011,31(1):1-7.WANG Shanshan,ZHOU Xiaoxin,TANG Guangfu,et al. Analysis of submodule overcurrent caused by DC pole-to-pole fault in modular multilevel converter HVDC system[J]. Proceedings of the CSEE,2011,31(1):1-7.
[12]张国驹,祁新春,陈瑶,等.模块化多电平换流器直流双极短路故障特性分析[J].电力系统自动化,2016,40(12):151-157.ZHANG Guoju,QI Xinchun,CHEN Yao,et al. Characteristic analysis of module multilevel converter under DC pole-to-pole short circuit fault[J]. Automation of Electric Power Systems,2016,40(12):151-157.
[13]屠卿瑞,徐政,郑翔,等.模块化多电平换流器型直流输电内部环流机理分析[J].高电压技术,2010,36(2):547-552.TU Qingrui,XU Zheng,ZHENG Xiang,et al. Mechanism analysis on the circulating current in modular multilevel converter based HVDC[J]. High Voltage Engineering,2010,36(2):547-552.
[14]丁冠军,汤广福,丁明,等.新型多电平电压源换流器模块的拓扑机制与调制策略[J].中国电机工程学报,2009,29(36):1-8.DING Guanjun,TANG Guangfu,DING Ming,et al. Topology mechanism and modulation scheme of a new multilevel voltage source converter modular[J]. Proceedings of the CSEE,2009,29(36):1-8.
[15]胡兆庆,毛承雄,陆继明.适用于电压源型高压直流输电的控制策略[J].电力系统自动化,2005,29(1):39-44.HU Zhaoqing,MAO Chengxiong,LU Jiming. A novel control strategy for voltage sourced converters based HVDC[J]. Automation of Electric Power Systems,2005,29(1):39-44.
[16]董云龙,包海龙,田杰,等.柔性直流输电控制及保护系统[J].电力系统自动化,2011,35(19):89-92.DONG Yunlong,BAO Hailong,TIAN Jie,et al. Control and protection system for VSC-HVDC[J]. Automation of Electric Power Systems,2011,35(19):89-92.
[17]董云龙,凌卫家,田杰,等.舟山多端柔性直流输电控制保护系统[J].电力自动化设备,2016,36(7):169-175.DONG Yunlong,LING Weijia,TIAN Jie,et al. Control&protection system for Zhoushan multi-terminal VSC-HVDC[J]. Electric Power Automation Equipment,2016,36(7):169-175.
[18]梁少华,田杰,曹冬明,等.柔性直流输电系统控制保护方案[J].电力系统自动化,2013,37(15):59-65.LIANG Shaohua,TIAN Jie,CAO Dongming,et al. A control and protection scheme for VSC-HVDC system[J]. Automation of Electric Power Systems,2013,37(15):59-65.
[19]韩坤,吴金龙,刘欣和,等.大规模多节点模块化多电平柔性直流输电换流阀控制周期优化[J].电力自动化设备,2015,35(1):36-41.HAN Kun,WU Jinlong,LIU Xinhe,et al. Optimized design of converter valve control period for large-scale multi-node MMC-based HVDC-flexible[J]. Electric Power Automation Equipment,2015,35(1):36-41.
[20]董云龙,杨勇,田杰,等.基于模块化多电平换流器的柔性直流输电动态模拟系统[J].电力系统自动化,2014,38(11):74-78.DONG Yunlong,YANG Yong,TIAN Jie,et al. Dynamic simulation system for modular multiterminal converter based VSC-HVDC[J].Automation of Electric Power Systems,2014,38(11):74-78.
[2]管敏渊,徐政. MMC型柔性直流输电系统无源网络供电的直接电压控制[J].电力自动化设备,2012,32(12):1-5.GUAN Minyuan,XU Zheng. Direct voltage control of MMC-based VSC-HVDC system for passive networks[J]. Electric Power Automation Equipment,2012,32(12):1-5.
[3]文俊,张一工,韩民晓,等.轻型直流输电:一种新一代的HVDC技术[J].电网技术,2003,27(1):47-51.WEN Jun,ZHANG Yigong,HAN Mingxiao,et al. HVDC based on voltage source converter a new generation of HVDC technique[J].Power System Technology,2003,27(1):47-51.
[4]李庚银,吕鹏飞,李广凯,等.轻型高压直流输电技术的发展与展望[J].电力系统自动化,2003,27(4):77-81.LI Gengyin,LPengfei,LI Guangkai,et al. Development and prospects for HVDC Light[J]. Automation of Electric Power Systems,2003,27(4):77-81.
[5]高冲,贺之渊,王秀环,等.厦门±320 k V柔性直流输电工程等效试验技术[J].智能电网,2016,4(3):257-262.GAO Chong,HE Zhiyuan,WANG Xiuhuan,et al. Equivalent test technology for±320 kV Xiamen flexible HVDC transmission project[J]. Smart Grid,2016,4(3):257-262.
[6]刘栋,汤广福,贺之渊,等.模块化多电平柔性直流输电数字-模拟混合实时仿真技术[J].电力自动化设备,2013,33(2):68-73.LIU Dong,TANG Guangfu,HE Zhiyuan,et al. Hybrid real-time simulation technology for MMC-HVDC[J]. Electric Power Automation Equipment,2013,33(2):68-73.
[7]吴亚楠,汤广福,查鲲鹏,等.模块化多电平HVDC换流阀运行试验主回路数学模型及参数设计[J].电网技术,2013,37(1):65-70.WU Yanan,TANG Guangfu,ZHA Kunpeng,et al. Mathematical model and parameter design of main circuit for operational test of modular multi-level HVDC converter valves[J]. Power System Technology,2013,37(1):65-70.
[8]汤广福,温家良,贺之渊,等.大功率电力电子装置等效试验方法及其在电力系统中的应用[J].中国电机工程学报,2008,28(36):1-9.TANG Guangfu,WEN Jialiang,HE Zhiyuan,et al. Equivalent testing approach and its application in power system for high power electronics equipment[J]. Proceedings of the CSEE,2008,28(36):1-9.
[9]查鲲鹏,汤广福,温家良,等.灵活用于SVC阀和HVDC阀运行试验的新型联合试验电路[J].电力系统自动化,2005,29(17):72-75.ZHA Kunpeng,TANG Guangfu,WEN Jialiang,et al. A new synthe-tic test equipment for the operational test of SVC and HVDC valves[J]. Automation of Electric Power Systems,2005,29(17):72-75.
[10]吴亚楠,吕天光,汤广福,等.模块化多电平VSC-HVDC换流阀的运行试验方法[J].中国电机工程学报,2012,32(30):8-15.WU Yanan,LTianguang,TANG Guangfu,et al. Operational test method for VSC-HVDC valves based on modular multi-level converter[J]. Proceedings of the CSEE,2012,32(30):8-15.
[11]王姗姗,周孝信,汤广福,等.模块化多电平换流器HVDC直流双极短路子模块过电流分析[J].中国电机工程学报,2011,31(1):1-7.WANG Shanshan,ZHOU Xiaoxin,TANG Guangfu,et al. Analysis of submodule overcurrent caused by DC pole-to-pole fault in modular multilevel converter HVDC system[J]. Proceedings of the CSEE,2011,31(1):1-7.
[12]张国驹,祁新春,陈瑶,等.模块化多电平换流器直流双极短路故障特性分析[J].电力系统自动化,2016,40(12):151-157.ZHANG Guoju,QI Xinchun,CHEN Yao,et al. Characteristic analysis of module multilevel converter under DC pole-to-pole short circuit fault[J]. Automation of Electric Power Systems,2016,40(12):151-157.
[13]屠卿瑞,徐政,郑翔,等.模块化多电平换流器型直流输电内部环流机理分析[J].高电压技术,2010,36(2):547-552.TU Qingrui,XU Zheng,ZHENG Xiang,et al. Mechanism analysis on the circulating current in modular multilevel converter based HVDC[J]. High Voltage Engineering,2010,36(2):547-552.
[14]丁冠军,汤广福,丁明,等.新型多电平电压源换流器模块的拓扑机制与调制策略[J].中国电机工程学报,2009,29(36):1-8.DING Guanjun,TANG Guangfu,DING Ming,et al. Topology mechanism and modulation scheme of a new multilevel voltage source converter modular[J]. Proceedings of the CSEE,2009,29(36):1-8.
[15]胡兆庆,毛承雄,陆继明.适用于电压源型高压直流输电的控制策略[J].电力系统自动化,2005,29(1):39-44.HU Zhaoqing,MAO Chengxiong,LU Jiming. A novel control strategy for voltage sourced converters based HVDC[J]. Automation of Electric Power Systems,2005,29(1):39-44.
[16]董云龙,包海龙,田杰,等.柔性直流输电控制及保护系统[J].电力系统自动化,2011,35(19):89-92.DONG Yunlong,BAO Hailong,TIAN Jie,et al. Control and protection system for VSC-HVDC[J]. Automation of Electric Power Systems,2011,35(19):89-92.
[17]董云龙,凌卫家,田杰,等.舟山多端柔性直流输电控制保护系统[J].电力自动化设备,2016,36(7):169-175.DONG Yunlong,LING Weijia,TIAN Jie,et al. Control&protection system for Zhoushan multi-terminal VSC-HVDC[J]. Electric Power Automation Equipment,2016,36(7):169-175.
[18]梁少华,田杰,曹冬明,等.柔性直流输电系统控制保护方案[J].电力系统自动化,2013,37(15):59-65.LIANG Shaohua,TIAN Jie,CAO Dongming,et al. A control and protection scheme for VSC-HVDC system[J]. Automation of Electric Power Systems,2013,37(15):59-65.
[19]韩坤,吴金龙,刘欣和,等.大规模多节点模块化多电平柔性直流输电换流阀控制周期优化[J].电力自动化设备,2015,35(1):36-41.HAN Kun,WU Jinlong,LIU Xinhe,et al. Optimized design of converter valve control period for large-scale multi-node MMC-based HVDC-flexible[J]. Electric Power Automation Equipment,2015,35(1):36-41.
[20]董云龙,杨勇,田杰,等.基于模块化多电平换流器的柔性直流输电动态模拟系统[J].电力系统自动化,2014,38(11):74-78.DONG Yunlong,YANG Yong,TIAN Jie,et al. Dynamic simulation system for modular multiterminal converter based VSC-HVDC[J].Automation of Electric Power Systems,2014,38(11):74-78.