电网友好型双馈感应发电机的暂态协调控制策略
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摘要
以风电运行"电网友好化"为背景,综合考虑电网友好型双馈感应发电机(DFIG)控制策略在应用中的相互影响并提出改进稳定控制策略。以满足并网导则要求的DFIG虚拟惯量控制、暂态有功控制与暂态无功控制3种电网友好型DFIG控制策略为对象,首先分析了暂态无功控制与暂态有功控制对于暂态有功给定的影响,其次分析了暂态有功给定对虚拟惯量控制效果的影响,最后分析了虚拟惯量控制对暂态无功控制效果的影响。在考虑以上3种影响的基础上,针对上述电网友好型DFIG控制策略在具体暂态阶段中相互制约的现象,从最终控制效果出发,提出能够同时改善送端系统在短路故障及其恢复过程中的功角稳定,减小故障期间电压跌落深度的综合控制方案,并通过时域仿真验证了影响分析与改进控制的正确性和有效性。
Based on the grid-friendly operation of wind power,this paper proposes an improved stability control strategy comprehensively considering the interaction of grid-friendly doubly-fed induction generator(DFIG)control strategy during the application.Taking the virtual inertia control(VIC),the transient active power control(TAPC)and transient reactive power control(TRPC)as research objects,the impact of TRPC and TAPC on the transient active power reference is firstly analyzed.Then the impact of transient active power reference on VIC,while the impact of VIC on TRPC is studied.Aiming at the phenomenon that the above grid-friendly DFIG control strategies are mutually restricted in a specific transient stage,this paper proposes an improved integrated control strategy that can improve the power angle stability of sending end system in the shortcircuit fault and its recovery process,and reduce the voltage sag depth in the fault from the perspective of final control effect.The time-domain simulation verifies the correctness and effectiveness of the impact analysis and the improved control strategy.
Based on the grid-friendly operation of wind power,this paper proposes an improved stability control strategy comprehensively considering the interaction of grid-friendly doubly-fed induction generator(DFIG)control strategy during the application.Taking the virtual inertia control(VIC),the transient active power control(TAPC)and transient reactive power control(TRPC)as research objects,the impact of TRPC and TAPC on the transient active power reference is firstly analyzed.Then the impact of transient active power reference on VIC,while the impact of VIC on TRPC is studied.Aiming at the phenomenon that the above grid-friendly DFIG control strategies are mutually restricted in a specific transient stage,this paper proposes an improved integrated control strategy that can improve the power angle stability of sending end system in the shortcircuit fault and its recovery process,and reduce the voltage sag depth in the fault from the perspective of final control effect.The time-domain simulation verifies the correctness and effectiveness of the impact analysis and the improved control strategy.
引文
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[12] YUAN H,YUAN X M,HU J B.Modeling and large-signal stability of DFIG wind turbine in DC-voltage control time scale[C]//IEEE Power & Energy Society General Meeting,July 17-21,2016,Boston,USA:5p.
[13] 陈汉杰,罗毅,张磊,等.双馈风机虚拟惯量控制对电力系统暂态稳定的影响[J].现代电力,2017,35(4):1-6.CHEN Hanjie,LUO Yi,ZHANG Lei,et al.Impact of virtual inertia control of doubly-fed induction generator on power system transient stability[J].Modern Electric Power,2017,35(4):1-6.
[14] 田新首,王伟胜,迟永宁,等.双馈风电机组故障行为及对电力系统暂态稳定性的影响[J].电力系统自动化,2015,39(10):16-21.TIAN Xinshou,WANG Weisheng,CHI Yongning,et al.Performances of DFIG-based wind turbines during system fault and its impacts on transient stability of power systems[J].Automation of Electric Power Systems,2015,39(10):16-21.
[15] WANG S,ZHANG X Y,WANG Y.Inertia control of DFIG-based wind turbines for interconnected power system stability enhancement[C]//International Conference on Electrical Machines and Systems (ICEMS),August 11-14,2017,Sydney,Australia:5p.
[16] 张祥宇,陈玉伟,付媛,等.含可控惯量风电场的发电系统功率振荡特性分析与综合控制[J].中国电机工程学报,2016,36(17):4564-4572.ZHANG Xiangyu,CHEN Yuwei,FU Yuan,et al.Oscillation characteristic of power generation system with controlled inertia wind farm and integrated control[J].Proceedings of the CSEE,2016,36(17):4564-4572.
[17] SHI K,SONG W,XU P,et al.Low-voltage ride-through control strategy for a virtual synchronous generator based on smooth switching[J].IEEE Access,2018,6:2703-2711.
[18] SHI K,YE H,XU P,et al.Low-voltage ride through control strategy of virtual synchronous generator based on the analysis of excitation state[J].IET Generation,Transmission & Distribution,2018,12(9):2165-2172.
[19] ZHANG Dongliang,WANG Yajing,HU Jiabing,et al.Impacts of PLL on the DFIG-based WTG’s electromechanical response under transient conditions:analysis and modeling[J].CSEE Journal of Power and Energy Systems,2016,2(2):30-39.
[20] 何仰赞,温增银.电力系统分析(下册)[M].3版.武汉:华中科技大学出版社,2002:77-78.HE Yangzan,WEN Zengyin.Power system analysis (volume 2)[M].3rd ed.Wuhan:Huazhong University of Science and Technology Press,2002:77-78.
[21] 张栋梁,应杰,袁小明,等.基于幅相运动方程的风机机电暂态特性的建模与优化[J].中国电机工程学报,2017,37(14):4044-4051.ZHANG Dongliang,YING Jie,YUAN Xiaoming,et al.Modelling and optimization of wind turbine electromechanical transient characteristics using magnitude phase motion equations[J].Proceedings of the CSEE,2017,37(14):4044-4051.
[22] KURDUR P.Power system stability and control[M].New York:McGraw-Hill,1994:707-737.
[2] 张晨曦,王德林,马宁宁,等.风电场限功率状态下电网旋转备用优化分配[J].电力系统自动化,2017,41(21):170-177.DOI:10.7500/AEPS20170417004.ZHANG Chenxi,WANG Delin,MA Ningning,et al.Optimal dispatch of spinning reserve in power grid under power-limited condition of wind farm[J].Automation of Electric Power Systems,2017,41(21):170-177.DOI:10.7500/AEPS20170417004.
[3] 边晓燕,姜莹,赵耀,等.高渗透率可再生能源微电网的风柴荷协调调频策略[J].电力系统自动化,2018,42(15):102-109.DOI:10.7500/AEPS20170803006.BIAN Xiaoyan,JIANG Ying,ZHAO Yao,et al.Coordinated frequency regulation strategy of wind,diesel and load for microgrid with high-penetration renewable energy[J].Automation of Electric Power Systems,2018,42(15):102-109.DOI:10.7500/AEPS20170803006.
[4] 高鹏,陈红坤,张光亚,等.主动配电网中消纳高渗透率风电的风电源规划[J].电力系统自动化,2018,42(15):39-46.DOI:10.7500/AEPS20180131006.GAO Peng,CHEN Hongkun,ZHANG Guangya,et al.Planning of wind turbine generators for high-penetration wind power accommodation in active distribution network[J].Automation of Electric Power Systems,2018,42(15):39-46.DOI:10.7500/AEPS20180131006.
[5] 薛晨,黎灿兵,曹一家,等.智能电网中的电网友好技术概述及展望[J].电力系统自动化,2011,35(15):102-107.XUE Chen,LI Canbing,CAO Yijia,et al.An overview and prospects of grid friendly technology in smart grid[J].Automation of Electric Power Systems,2011,35(15):102-107.
[6] CLARK K,MILLER N W,SANCHEZ-GASCA J J.Modeling of GE wind turbine-generators for grid studies[EB/OL].[2018-01-05].https://www.researchgate.net/publication 1267218696.
[7] 陈武晖,王龙,谭伦农,等.WECC风力发电机组/场通用动态模型研究进展[J].中国电机工程学报,2017,37(3):738-751.CHEN Wuhui,WANG Long,TAN Lunnong,et al.Recent progress of developing WECC generic models of wind turbine generators/plants for dynamic simulation[J].Proceedings of the CSEE,2017,37(3):738-751.
[8] WEISE B.Impact of K-factor and active current reduction during fault-ride-through of generating units connected via voltage-sourced converters on power system stability[J].IET Renewable Power Generation,2015,9(1):25-36.
[9] 董哲,周明,李庚银,等.风机有功控制对系统暂态功角第二摆稳定性影响机理[J].中国电机工程学报,2017,37(16):4680-4690.DONG Zhe,ZHOU Ming,LI Gengyin,et al.Influence mechanism of active power control of wind turbine generators on power system transient second swing stability[J].Proceedings of the CSEE,2017,37(16):4680-4690.
[10] 田新首,王伟胜,迟永宁,等.基于双馈风电机组有效储能的变参数虚拟惯量控制[J].电力系统自动化,2015,39(5):20-26.TIAN Xinshou,WANG Weisheng,CHI Yongning,et al.Variable parameter virtual inertia control based on effective energy storage of DFIG-based wind turbines[J].Automation of Electric Power Systems,2015,39(5):20-26.
[11] 刘彬彬,杨健维,廖凯,等.基于转子动能控制的双馈风电机组频率控制改进方案[J].电力系统自动化,2016,40(16):17-22.LIU Binbin,YANG Jianwei,LIAO Kai,et al.Improved frequency control strategy for DFIG-based wind turbines based on rotor kinetic energy control[J].Automation of Electric Power Systems,2016,40(16):17-22.
[12] YUAN H,YUAN X M,HU J B.Modeling and large-signal stability of DFIG wind turbine in DC-voltage control time scale[C]//IEEE Power & Energy Society General Meeting,July 17-21,2016,Boston,USA:5p.
[13] 陈汉杰,罗毅,张磊,等.双馈风机虚拟惯量控制对电力系统暂态稳定的影响[J].现代电力,2017,35(4):1-6.CHEN Hanjie,LUO Yi,ZHANG Lei,et al.Impact of virtual inertia control of doubly-fed induction generator on power system transient stability[J].Modern Electric Power,2017,35(4):1-6.
[14] 田新首,王伟胜,迟永宁,等.双馈风电机组故障行为及对电力系统暂态稳定性的影响[J].电力系统自动化,2015,39(10):16-21.TIAN Xinshou,WANG Weisheng,CHI Yongning,et al.Performances of DFIG-based wind turbines during system fault and its impacts on transient stability of power systems[J].Automation of Electric Power Systems,2015,39(10):16-21.
[15] WANG S,ZHANG X Y,WANG Y.Inertia control of DFIG-based wind turbines for interconnected power system stability enhancement[C]//International Conference on Electrical Machines and Systems (ICEMS),August 11-14,2017,Sydney,Australia:5p.
[16] 张祥宇,陈玉伟,付媛,等.含可控惯量风电场的发电系统功率振荡特性分析与综合控制[J].中国电机工程学报,2016,36(17):4564-4572.ZHANG Xiangyu,CHEN Yuwei,FU Yuan,et al.Oscillation characteristic of power generation system with controlled inertia wind farm and integrated control[J].Proceedings of the CSEE,2016,36(17):4564-4572.
[17] SHI K,SONG W,XU P,et al.Low-voltage ride-through control strategy for a virtual synchronous generator based on smooth switching[J].IEEE Access,2018,6:2703-2711.
[18] SHI K,YE H,XU P,et al.Low-voltage ride through control strategy of virtual synchronous generator based on the analysis of excitation state[J].IET Generation,Transmission & Distribution,2018,12(9):2165-2172.
[19] ZHANG Dongliang,WANG Yajing,HU Jiabing,et al.Impacts of PLL on the DFIG-based WTG’s electromechanical response under transient conditions:analysis and modeling[J].CSEE Journal of Power and Energy Systems,2016,2(2):30-39.
[20] 何仰赞,温增银.电力系统分析(下册)[M].3版.武汉:华中科技大学出版社,2002:77-78.HE Yangzan,WEN Zengyin.Power system analysis (volume 2)[M].3rd ed.Wuhan:Huazhong University of Science and Technology Press,2002:77-78.
[21] 张栋梁,应杰,袁小明,等.基于幅相运动方程的风机机电暂态特性的建模与优化[J].中国电机工程学报,2017,37(14):4044-4051.ZHANG Dongliang,YING Jie,YUAN Xiaoming,et al.Modelling and optimization of wind turbine electromechanical transient characteristics using magnitude phase motion equations[J].Proceedings of the CSEE,2017,37(14):4044-4051.
[22] KURDUR P.Power system stability and control[M].New York:McGraw-Hill,1994:707-737.