新型高压直流断路器的自供能控制策略
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摘要
提出了一种新型混合式高压直流断路器的拓扑结构及其自供能控制策略。该新型断路器包括超快速机械开关、负载转移开关和主断路器等部件。负载转移开关和主断路器都是由增强型半桥子模块构成。通过所设计的控制策略,可以使子模块中的电容在正常工况下带电运行,进而可以为子模块中的IGBT提供驱动所需要的能量。该新型断路器存在启动充能模式、稳态运行模式和故障处理模式3种运行模式。针对上述3种运行模式分别提出了相应的控制策略。增强型半桥子模块是新型直流断路器的核心元件,给出了其关键参数的选取方法。在PSCAD/EMTDC仿真软件中搭建了四端直流电网模型,仿真结果验证了所提的新型高压直流断路器及其控制策略的可行性和有效性。
The topology of a new hybrid HVDC circuit breaker and its control strategy of self-powered capability are proposed. This new circuit breaker consists of ultra-fast mechanical switches,load commutation switches and main circuit breakers. The load commutation switch and the main circuit breaker are formed through the series of EHBSMs(Enhanced Half-Bridge Sub-Modules). By the corresponding control strategy,the energy stored in the EHBSMs can be used for IGBT triggering. The new circuit breaker can operate in three modes,namely the start-up mode,the steady-state operation mode and the fault handling mode. These three modes are analyzed in detail and the corresponding control methods are proposed. Besides,the selection method of the EHBSMs' key parameters is discussed.Finally,a four-terminal DC grid model is built in PSCAD/EMTDC simulation software. The simulative results verify the feasibility and effectiveness of the new HVDC circuit breaker and its control strategy.
The topology of a new hybrid HVDC circuit breaker and its control strategy of self-powered capability are proposed. This new circuit breaker consists of ultra-fast mechanical switches,load commutation switches and main circuit breakers. The load commutation switch and the main circuit breaker are formed through the series of EHBSMs(Enhanced Half-Bridge Sub-Modules). By the corresponding control strategy,the energy stored in the EHBSMs can be used for IGBT triggering. The new circuit breaker can operate in three modes,namely the start-up mode,the steady-state operation mode and the fault handling mode. These three modes are analyzed in detail and the corresponding control methods are proposed. Besides,the selection method of the EHBSMs' key parameters is discussed.Finally,a four-terminal DC grid model is built in PSCAD/EMTDC simulation software. The simulative results verify the feasibility and effectiveness of the new HVDC circuit breaker and its control strategy.
引文
[1]徐政,肖晃庆,张哲任,等.柔性直流输电系统[M]. 2版.北京:机械工业出版社,2017.
[2] AN T,ZHOU X,HAN C,et al. A DC grid benchmark model for studies of interconnection of power systems[J]. CSEE Journal of Power and Energy Systems,2015,1(4):101-109.
[3]谢晔源,曹冬明,李继红,等.一种实现柔直系统快速恢复的自取能故障阻尼器[J].电力自动化设备,2017,37(7):142-147.XIE Yeyuan,CAO Dongming,LI Jihong,et al. Self-powered fault damper for realizing fast recovery of VSC-HVDC system[J].Electric Power Automation Equipment,2017,37(7):142-147.
[4]ARIMATSU K,YOSHIOKA Y,TOKUYAMA S,et al. Development and interrupting tests on 250 kV 8 k A HVDC circuit breaker[J].IEEE Transactions on Power Apparatus and Systems,1985,5(9):2452-2459.
[5]NAKAO H,NAKAGOSHI Y,HATANO M,et al. DC current interruption in HVDC SF6gas MRTB by means of self-excited oscillation superimposition[J]. IEEE Transactions on Power Delivery,2001,16(4):687-693.
[6]MEYER C,DE W. Solid-state circuit breaker based on active thyristor topologies[J]. IEEE Transactions on Power Electronics,2006,21(2):450-458.
[7]穆建国,王莉,胡杰.直流固态断路器拓扑结构的设计与分析[J].中国电机工程学报,2010,30(18):109-114.MU Jianguo,WANG Li,HU Jie. Analysis and design of topologicalstructure for DC solid-state circuit breaker[J]. Proceedings of the CSEE,2010,30(18):109-114.
[8]HASSANPOOR A,HFNER J,JACOBSON B. Technical assessment of load commutation switch in hybrid HVDC breaker[J]. IEEE Transactions on Power Electronics,2015,30(10):5393-5400.
[9]药韬,温家良,李金元,等.基于IGBT串联技术的混合式高压直流断路器方案[J].电网技术,2015,39(9):2484-2489.YAO Tao,WEN Jialiang,LI Jinyuan,et al. A hybrid high voltage DC circuit breaker design plan with series-connected IGBTs[J].Power System Technology,2015,39(9):2484-2489.
[10]刘程卓,王渝红,龚鸿,等.一种适用于混合式高压直流断路器负载换流开关的新型缓冲电路[J].电力自动化设备,2018,38(3):205-209.LIU Chengzhuo,WANG Yuhong,GONG Hong,et al. Novel snubber circuit for load commutation switch of hybrid HVDC breaker[J].Electric Power Automation Equipment,2018,38(3):205-209.
[11]CALLAVIK M,BLOMBERG A,HFNER J,et al. The hybrid HVDC breaker[J]. ABB Grid Systems Technical Paper,2012,361:143-152.
[12]GRIESHABER W,DUPRAZ J P,PENACHE D L,et al. Development and test of a 120 kV direct current circuit breaker[C]∥CIGRE Session 45. Paris,France:CIGRE,2014:B4-C01.
[13]魏晓光,高冲,罗湘,等.柔性直流输电网用新型高压直流断路器设计方案[J].电力系统自动化,2013,37(15):95-102.WEI Xiaoguang,GAO Chong,LUO Xiang,et al. A novel design of high-voltage DC circuit breaker in HVDC flexible transmission grid[J]. Automation of Electric Power Systems,2013,37(15):95-102.
[14]ZHOU J,LI H,XIE R,et al. Research of DC circuit breaker applied on Zhoushan multi-terminal VSC-HVDC project[C]∥2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference(APPEEC). Xi'an,China:IEEE,2016:1636-1640.
[15]刘高任,许烽,徐政,等.适用于直流电网的组合式高压直流断路器[J].电网技术,2016,40(1):70-77.LIU Gaoren,XU Feng,XU Zheng,et al. An assembled HVDC breaker for HVDC grid[J]. Power System Technology,2016,40(1):70-77.
[16]许烽,江道灼,黄晓明,等.电流转移型高压直流断路器[J].电力系统自动化,2016,40(21):98-104.XU Feng,JIANG Daozhuo,HUANG Xiaoming,et al. Current-transferring high voltage DC breaker[J]. Automation of Electric Power Systems,2016,40(21):98-104.
[2] AN T,ZHOU X,HAN C,et al. A DC grid benchmark model for studies of interconnection of power systems[J]. CSEE Journal of Power and Energy Systems,2015,1(4):101-109.
[3]谢晔源,曹冬明,李继红,等.一种实现柔直系统快速恢复的自取能故障阻尼器[J].电力自动化设备,2017,37(7):142-147.XIE Yeyuan,CAO Dongming,LI Jihong,et al. Self-powered fault damper for realizing fast recovery of VSC-HVDC system[J].Electric Power Automation Equipment,2017,37(7):142-147.
[4]ARIMATSU K,YOSHIOKA Y,TOKUYAMA S,et al. Development and interrupting tests on 250 kV 8 k A HVDC circuit breaker[J].IEEE Transactions on Power Apparatus and Systems,1985,5(9):2452-2459.
[5]NAKAO H,NAKAGOSHI Y,HATANO M,et al. DC current interruption in HVDC SF6gas MRTB by means of self-excited oscillation superimposition[J]. IEEE Transactions on Power Delivery,2001,16(4):687-693.
[6]MEYER C,DE W. Solid-state circuit breaker based on active thyristor topologies[J]. IEEE Transactions on Power Electronics,2006,21(2):450-458.
[7]穆建国,王莉,胡杰.直流固态断路器拓扑结构的设计与分析[J].中国电机工程学报,2010,30(18):109-114.MU Jianguo,WANG Li,HU Jie. Analysis and design of topologicalstructure for DC solid-state circuit breaker[J]. Proceedings of the CSEE,2010,30(18):109-114.
[8]HASSANPOOR A,HFNER J,JACOBSON B. Technical assessment of load commutation switch in hybrid HVDC breaker[J]. IEEE Transactions on Power Electronics,2015,30(10):5393-5400.
[9]药韬,温家良,李金元,等.基于IGBT串联技术的混合式高压直流断路器方案[J].电网技术,2015,39(9):2484-2489.YAO Tao,WEN Jialiang,LI Jinyuan,et al. A hybrid high voltage DC circuit breaker design plan with series-connected IGBTs[J].Power System Technology,2015,39(9):2484-2489.
[10]刘程卓,王渝红,龚鸿,等.一种适用于混合式高压直流断路器负载换流开关的新型缓冲电路[J].电力自动化设备,2018,38(3):205-209.LIU Chengzhuo,WANG Yuhong,GONG Hong,et al. Novel snubber circuit for load commutation switch of hybrid HVDC breaker[J].Electric Power Automation Equipment,2018,38(3):205-209.
[11]CALLAVIK M,BLOMBERG A,HFNER J,et al. The hybrid HVDC breaker[J]. ABB Grid Systems Technical Paper,2012,361:143-152.
[12]GRIESHABER W,DUPRAZ J P,PENACHE D L,et al. Development and test of a 120 kV direct current circuit breaker[C]∥CIGRE Session 45. Paris,France:CIGRE,2014:B4-C01.
[13]魏晓光,高冲,罗湘,等.柔性直流输电网用新型高压直流断路器设计方案[J].电力系统自动化,2013,37(15):95-102.WEI Xiaoguang,GAO Chong,LUO Xiang,et al. A novel design of high-voltage DC circuit breaker in HVDC flexible transmission grid[J]. Automation of Electric Power Systems,2013,37(15):95-102.
[14]ZHOU J,LI H,XIE R,et al. Research of DC circuit breaker applied on Zhoushan multi-terminal VSC-HVDC project[C]∥2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference(APPEEC). Xi'an,China:IEEE,2016:1636-1640.
[15]刘高任,许烽,徐政,等.适用于直流电网的组合式高压直流断路器[J].电网技术,2016,40(1):70-77.LIU Gaoren,XU Feng,XU Zheng,et al. An assembled HVDC breaker for HVDC grid[J]. Power System Technology,2016,40(1):70-77.
[16]许烽,江道灼,黄晓明,等.电流转移型高压直流断路器[J].电力系统自动化,2016,40(21):98-104.XU Feng,JIANG Daozhuo,HUANG Xiaoming,et al. Current-transferring high voltage DC breaker[J]. Automation of Electric Power Systems,2016,40(21):98-104.