柔直电网孤岛运行方式下换流阀闭锁时交流耗能装置投切仿真研究
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摘要
针对张北柔直电网示范工程设备参数,建立了由换流阀、风机和交流耗能装置等设备组成的张北四端柔性直流电网仿真模型。开展了张北柔直电网孤岛方式下换流站稳态和闭锁故障时的仿真研究。针对换流站闭锁时的功率盈余和系统失稳问题,仿真了柔直电网孤岛运行方式下,换流阀闭锁时耗能装置投切对柔直系统的影响。结果表明,配合投切交流耗能装置可以有效平衡孤岛方式下送端换流站闭锁故障时的风功率盈余,极大缓解因闭锁造成的换流站极电压过充和系统失稳问题。
Aiming at the equipment parameters of the demonstration project of Zhangbei VSC-HVDC power grid,a simulation model of Zhangbei four-terminal VSC-HVDC power grid is established, which consists of co nverter valves,wind turbine generators and AC energy dissipation device.The simulation of steady-state and blocking faults of converter station under isolated island operation in Zhangbei VSC-HVDC power grid is carried out. Aiming at the problem of power surplus and system instability when the converter station is locked, the effect of switching AC energy dissipation device on the system during unipolar blocking under isolated island operation in VSC-HVDC power grid is researched in this paper.The results show that the wind power surplus can be effectively balanced by switching on AC energy dissipation device under isolated island operation, which can greatly alleviate the problems of pole voltage overcharging and system instability caused by blocking.
Aiming at the equipment parameters of the demonstration project of Zhangbei VSC-HVDC power grid,a simulation model of Zhangbei four-terminal VSC-HVDC power grid is established, which consists of co nverter valves,wind turbine generators and AC energy dissipation device.The simulation of steady-state and blocking faults of converter station under isolated island operation in Zhangbei VSC-HVDC power grid is carried out. Aiming at the problem of power surplus and system instability when the converter station is locked, the effect of switching AC energy dissipation device on the system during unipolar blocking under isolated island operation in VSC-HVDC power grid is researched in this paper.The results show that the wind power surplus can be effectively balanced by switching on AC energy dissipation device under isolated island operation, which can greatly alleviate the problems of pole voltage overcharging and system instability caused by blocking.
引文
[1]黄其励.中国可再生能源发展对建设全球能源互联网的启示[J].全球能源互联网,2018,1(1):1-9.Huang Qili.Insights from China renewable energy development for global energy interconnection[J].Journal of Global Energy Interconnection,2018,1(1):1-9(in Chinese).
[2]International Energy Agency.Electricity information:overview(2018 edition)[R].Paris:IEA,2018.
[3]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.Flexible DCtransmission control and protection system[J].Power System Automation,2011,35(19):89-92(in Chinese).
[4]Kim J H,Min B D,Kwon B H,et al.A PWM buck-boost AC chopper solving the commutation problem[J].IEEETransactions on Industrial Electronics,1998,45(5):832-835.
[5]Sundareswaran K,Kumar A P.Voltage harmonic elimination in PWM AC chopper using genetic algorithm[J].IEE ProceedingsElectric Power Applications,2004,151(1):26-31.
[6]Choe G H,Wallace A K,Park M H.An improved PWMtechnique for AC choppers[J].Power Electronics IEEETransactions on,1989,4(4):496-505.
[7]Veszpremi K,Hunyar M.New application fields of the PWMIGBT AC chopper[C].International Conference on Power Electronics&Variable Speed Drives,2000.
[8]王庆,卢宇,胡兆庆,等.柔性直流输电系统孤岛运行方式下的故障电流抑制方法[J].电力系统自动化,2018,42(7):62-67.Wang Qing,Lu Yu,Hu Zhaoqing,et al.Fault current suppression method under isolated operation mode of flexible HVDC transmission system[J].Power System Automation,2018,42(7):62-67(in Chinese).
[9]郭贤珊,周杨,梅念,等.张北柔直电网的构建与特性分析[J].电网技术,2018,42(11):3698-3707.Guo Xianshan,Zhou Yang,Mei Nian,et al.Construction and characteristic analysis of Zhangbei flexible DC grid[J].Power System Technology,2018,42(11):3698-3707(in Chinese).
[10]U.N.Gnanarathna,A.M.Gole,R.P.Jayasinghe.Efficient modeling of modular multilevel HVDC converters(MMC)on electromagnetic transient simulation programs[J].IEEETransactions on Power Delivery,2011,26(1):316-324.
[11]林畅,翟雪冰,高路,等.厦门柔性直流输电系统孤岛运行控制仿真研究[J].智能电网,2016,4(3):235-242.Lin Chang,Zhai Xuebing,Gao Lu,et al.Simulation study of control strategy for island operation of Xiamen VSC-HVDC[J].Smart Grid,2016,4(3):235-242(in Chinese).
[12]凌卫家,孙维真,张静,等.舟山多端柔性直流输电示范工程典型运行方式分析[J].电网技术,2016,40(6):1751-1758.Ling Weijia,Sun Weizhen,Zhang Jing,et al.Analysis of typical operation modes of Zhoushan multi-terminal flexible DC transmission demonstration project[J].Power Grid Technology,2016,40(6):1751-1758(in Chinese).
[13]余荣兴,刘茂涛.云广特高压孤岛运行方式下单极闭锁性能试验分析[J].电力系统保护与控制,2014,42(7):146-149.Yu Rongxing,Liu Maotao.Yunguang UHV island operation mode unipolar blocking performance test analysis[J].Power System Protection and Control.2014,42(7):146-149(in Chinese).
[2]International Energy Agency.Electricity information:overview(2018 edition)[R].Paris:IEA,2018.
[3]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.Flexible DCtransmission control and protection system[J].Power System Automation,2011,35(19):89-92(in Chinese).
[4]Kim J H,Min B D,Kwon B H,et al.A PWM buck-boost AC chopper solving the commutation problem[J].IEEETransactions on Industrial Electronics,1998,45(5):832-835.
[5]Sundareswaran K,Kumar A P.Voltage harmonic elimination in PWM AC chopper using genetic algorithm[J].IEE ProceedingsElectric Power Applications,2004,151(1):26-31.
[6]Choe G H,Wallace A K,Park M H.An improved PWMtechnique for AC choppers[J].Power Electronics IEEETransactions on,1989,4(4):496-505.
[7]Veszpremi K,Hunyar M.New application fields of the PWMIGBT AC chopper[C].International Conference on Power Electronics&Variable Speed Drives,2000.
[8]王庆,卢宇,胡兆庆,等.柔性直流输电系统孤岛运行方式下的故障电流抑制方法[J].电力系统自动化,2018,42(7):62-67.Wang Qing,Lu Yu,Hu Zhaoqing,et al.Fault current suppression method under isolated operation mode of flexible HVDC transmission system[J].Power System Automation,2018,42(7):62-67(in Chinese).
[9]郭贤珊,周杨,梅念,等.张北柔直电网的构建与特性分析[J].电网技术,2018,42(11):3698-3707.Guo Xianshan,Zhou Yang,Mei Nian,et al.Construction and characteristic analysis of Zhangbei flexible DC grid[J].Power System Technology,2018,42(11):3698-3707(in Chinese).
[10]U.N.Gnanarathna,A.M.Gole,R.P.Jayasinghe.Efficient modeling of modular multilevel HVDC converters(MMC)on electromagnetic transient simulation programs[J].IEEETransactions on Power Delivery,2011,26(1):316-324.
[11]林畅,翟雪冰,高路,等.厦门柔性直流输电系统孤岛运行控制仿真研究[J].智能电网,2016,4(3):235-242.Lin Chang,Zhai Xuebing,Gao Lu,et al.Simulation study of control strategy for island operation of Xiamen VSC-HVDC[J].Smart Grid,2016,4(3):235-242(in Chinese).
[12]凌卫家,孙维真,张静,等.舟山多端柔性直流输电示范工程典型运行方式分析[J].电网技术,2016,40(6):1751-1758.Ling Weijia,Sun Weizhen,Zhang Jing,et al.Analysis of typical operation modes of Zhoushan multi-terminal flexible DC transmission demonstration project[J].Power Grid Technology,2016,40(6):1751-1758(in Chinese).
[13]余荣兴,刘茂涛.云广特高压孤岛运行方式下单极闭锁性能试验分析[J].电力系统保护与控制,2014,42(7):146-149.Yu Rongxing,Liu Maotao.Yunguang UHV island operation mode unipolar blocking performance test analysis[J].Power System Protection and Control.2014,42(7):146-149(in Chinese).