重复控制下指定次谐波电流控制方法
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摘要
随着电网负载的多样性,对补偿装置提出了更高的要求,研发一种功能完备、性能优良的补偿装置是十分必要的。本文在传统静止同步补偿器无功补偿控制策略基础上,增加了谐波抑制和不平衡治理功能。指定次谐波的补偿精度和动态响应取决于电流调节器的性能,本文以多同步旋转坐标系为基础,提出一种新的控制方法,该控制方法将重复控制器通过一个相加环节叠加到PI控制器中形成复合电流调节器。复合电流调节器在实现谐波电流独立控制的同时,又提高了整个系统的稳态精度。仿真结果验证了新的控制方法的优越性。
Along with the diversity of power loads,higher requirements for compensation devices have been proposed,thus it is necessary to develop a compensation device with perfect function and good performance.On the basis of reactive power compensation control strategy for a traditional static synchronous compensator(STATCOM),suppression of harmonics and control of unbalance are added.The compensation accuracy and dynamic response of selective harmonics depend on the performance of a current regulator.In this paper,a new control method is proposed based on multiple synchronous rotating frames,in which a repetitive controller is added to a PI controller through an additive link.In this way,a composite current regulator is formed,which realizes independent control of harmonic current and improves the steady-state accuracy of the system at the same time.Simulation results verify the superiority of the new control method.
Along with the diversity of power loads,higher requirements for compensation devices have been proposed,thus it is necessary to develop a compensation device with perfect function and good performance.On the basis of reactive power compensation control strategy for a traditional static synchronous compensator(STATCOM),suppression of harmonics and control of unbalance are added.The compensation accuracy and dynamic response of selective harmonics depend on the performance of a current regulator.In this paper,a new control method is proposed based on multiple synchronous rotating frames,in which a repetitive controller is added to a PI controller through an additive link.In this way,a composite current regulator is formed,which realizes independent control of harmonic current and improves the steady-state accuracy of the system at the same time.Simulation results verify the superiority of the new control method.
引文
[1]王兆安,杨君,刘进军.谐波抑制和无功功率补偿[M].北京:机械工业出版社,1998.
[2]戴毅,常鲜戎,董正华(Dai Yi,Chang Xianrong,Dong Zhenghua).改进Ip-Iq法在D-STATCOM电流检测的应用(Application of improved Ip-Iq detection method on D-STATCOM current detection)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2014,26(7):64-69.
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[4]郭希铮,韩强,杨耕,等(Guo Xizheng,Han Qiang,Yang Geng,et al).可选择谐波型有源电力滤波器的闭环控制和实现(Closed-loop control method and implementation of selective harmonic type active power filters)[J].电工技术学报(Transactions of China Electrotechnical Society),2006,21(9):51-56.
[5]张树全,戴珂,谢斌,等(Zhang Shuquan,Dai Ke,Xie Bin,et al).多同步旋转坐标系下指定次谐波电流控制(Selective harmonic current control based on multiple synchronous rotating coordinates)[J].中国电机工程学报(Proceedings of the CSEE),2010,30(3):55-62.
[6]武健,何娜,徐殿国,等(Wu Jian,He Na,Xu Dianguo,et al).重复控制在并联有源滤波器中的应用(Application of repetitive control technique in shunt active power filter)[J].中国电机工程学报(Proceedings of the CSEE),2008,28(18):66-72.
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[8]李雄杰(Li Xiongjie).VSC-HVDC系统交流输出中直流分量抑制的控制方法(Suppression Control Method of DC Component in the AC Output of the VSC-HVDC System)[D].长沙:长沙理工大学电气与信息工程学院(Changsha:School of Electrical and Information Engineering,Changsha University of Science and Technology),2012.
[9]李翠艳,张东纯,庄显义(Li Cuiyan,Zhang Dongchun,Zhuang Xianyi).重复控制综述(Repetitive control:A survey)[J].电机与控制学报(Electric Machines and Control),2005,9(1):37-44.
[10]耿攀,戴珂,魏学良,等(Geng Pan,Dai Ke,Wei Xueliang,et al).三相并联型有源电力滤波器电流重复控制(The repetitive control algorithm based current waveform correction for shunt active power filter)[J].电工技术学报(Transactions of China Electrotechnical Society),2007,22(2):127-131.
[11]王晓刚,谢运祥,王清,等(Wang Xiaogang,Xie Yun-xiang,Wang Qing,et al).并联型有源电力滤波器的延时补偿控制(Delay compensation control of shunt active power filter)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2012,24(4):64-70.
[12]杨昆,陈国柱(Yang Kun,Chen Guozhu).基于重复控制的DSTATCOM补偿电流控制(Compensation current control for DSTATCOM based on repetitive control)[J].电力系统自动化(Automation of Electric Power Systems),2013,37(10):80-85.
[13]赵莉华,雷晶晶,张亚超,等(Zhao Lihua,Lei Jingjing,Zhang Yachao,et al).谐波情况下电网无功补偿器容量算法的研究(Research on methods of reactive power compensation capacitor capacity in electric networks under harmonic conditions)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(6):68-72.
[2]戴毅,常鲜戎,董正华(Dai Yi,Chang Xianrong,Dong Zhenghua).改进Ip-Iq法在D-STATCOM电流检测的应用(Application of improved Ip-Iq detection method on D-STATCOM current detection)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2014,26(7):64-69.
[3]钟畅,游小杰,郭希铮,等(Zong Chang,You Xiaojie,Guo Xizheng,et al).基于复矢量电流调节器的指定次谐波电流控制方法研究(Selective-harmonic active power filter using complex vector PI current regulator)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2014,33(6):23-29,57.
[4]郭希铮,韩强,杨耕,等(Guo Xizheng,Han Qiang,Yang Geng,et al).可选择谐波型有源电力滤波器的闭环控制和实现(Closed-loop control method and implementation of selective harmonic type active power filters)[J].电工技术学报(Transactions of China Electrotechnical Society),2006,21(9):51-56.
[5]张树全,戴珂,谢斌,等(Zhang Shuquan,Dai Ke,Xie Bin,et al).多同步旋转坐标系下指定次谐波电流控制(Selective harmonic current control based on multiple synchronous rotating coordinates)[J].中国电机工程学报(Proceedings of the CSEE),2010,30(3):55-62.
[6]武健,何娜,徐殿国,等(Wu Jian,He Na,Xu Dianguo,et al).重复控制在并联有源滤波器中的应用(Application of repetitive control technique in shunt active power filter)[J].中国电机工程学报(Proceedings of the CSEE),2008,28(18):66-72.
[7]Briz F,Garcia P,Degner M W,et al.Dynamic behavior of current controllers for selective harmonic compensation in three-phase active power filters[J].IEEE Trans on Industry Applications,2013,49(3):1411-1420.
[8]李雄杰(Li Xiongjie).VSC-HVDC系统交流输出中直流分量抑制的控制方法(Suppression Control Method of DC Component in the AC Output of the VSC-HVDC System)[D].长沙:长沙理工大学电气与信息工程学院(Changsha:School of Electrical and Information Engineering,Changsha University of Science and Technology),2012.
[9]李翠艳,张东纯,庄显义(Li Cuiyan,Zhang Dongchun,Zhuang Xianyi).重复控制综述(Repetitive control:A survey)[J].电机与控制学报(Electric Machines and Control),2005,9(1):37-44.
[10]耿攀,戴珂,魏学良,等(Geng Pan,Dai Ke,Wei Xueliang,et al).三相并联型有源电力滤波器电流重复控制(The repetitive control algorithm based current waveform correction for shunt active power filter)[J].电工技术学报(Transactions of China Electrotechnical Society),2007,22(2):127-131.
[11]王晓刚,谢运祥,王清,等(Wang Xiaogang,Xie Yun-xiang,Wang Qing,et al).并联型有源电力滤波器的延时补偿控制(Delay compensation control of shunt active power filter)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2012,24(4):64-70.
[12]杨昆,陈国柱(Yang Kun,Chen Guozhu).基于重复控制的DSTATCOM补偿电流控制(Compensation current control for DSTATCOM based on repetitive control)[J].电力系统自动化(Automation of Electric Power Systems),2013,37(10):80-85.
[13]赵莉华,雷晶晶,张亚超,等(Zhao Lihua,Lei Jingjing,Zhang Yachao,et al).谐波情况下电网无功补偿器容量算法的研究(Research on methods of reactive power compensation capacitor capacity in electric networks under harmonic conditions)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(6):68-72.