基于SVPWM的静止无功发生器控制策略研究
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摘要
考虑到实现和控制的经济实用性,针对低压配电网中静止无功发生器(SVG)的运行控制问题,提出了一种改进式控制策略,该控制策略有恒无功、恒电压两种控制方式,能满足不同用户、不同地区的功率补偿需求。其中,恒无功模式下的外环控制通过简单计算直接解耦q轴电流,避免了比例积分(PI)调节。通过在PSCAD/EMTDC中搭建的SVG系统仿真模型,对所提出的控制策略进行了仿真验证,并提供了大量的实验和仿真数据,仿真结果表明:依据该控制策略设计的SVG系统响应速度快,直流电压稳定性好,动态补偿性能优,同时实现简单,因而具有一定的实用推广价值。
Considering the economic practicality of implementation and control,in view of the operation control issues of SVG in low voltage distribution networks,an improved control strategy is proposed in this paper.To meet the power compensation needs of different users and parts,the constant reactive power and constant voltage control strategy are included.To avoid the PI regulation,the outer loop q axis current in constant reactive mode is decoupled through a simple calculation.Finally,a SVG simulation model is developed in PSCAD/EMTDC to verify the proposed control strategy,and both the real and simulative data are given.The simulation results prove that the designed SVG has certain practical value,with fast response,good DC voltage stability and dynamic performance,which is easy to implement.
Considering the economic practicality of implementation and control,in view of the operation control issues of SVG in low voltage distribution networks,an improved control strategy is proposed in this paper.To meet the power compensation needs of different users and parts,the constant reactive power and constant voltage control strategy are included.To avoid the PI regulation,the outer loop q axis current in constant reactive mode is decoupled through a simple calculation.Finally,a SVG simulation model is developed in PSCAD/EMTDC to verify the proposed control strategy,and both the real and simulative data are given.The simulation results prove that the designed SVG has certain practical value,with fast response,good DC voltage stability and dynamic performance,which is easy to implement.
引文
[1]张兴,张崇巍.PWM整流器及其控制[M].北京:机械工业出版社,2012:62-81.
[2]黄知超,杨升振,延红艳,等.基于dq坐标系有功无功电流解耦空间电压矢量的STATCOM控制方法[J].电测与仪表,2012,49(12):32-36,45.Huang Zhichao,Yang Shengzhen,Yan Hongyan,et al.A control method for SVPWM-based STATCOM using active-reactive current decouple under dq coordinate system[J].Electrical Measurement&Instrumentation,2012,49(12):32-36,45.
[3]马春明,解大,余志文,等.SVG的电压控制策略[J].电力自动化设备,2013,33(3):96-99,107.Ma Chunming,Xie Da,Yu Zhiwen,et al.Voltage control strategy of SVG[J].Electric Power Automation Equipment,2013,33(3):96-99,107.
[4]龚锦霞,卢婧婧,解大,等.一种新型动态无功补偿器的控制算法[J].电力自动化设备,2009,29(5):89-93.Gong Jinxia,Lu Jingjing,Xie Da,et al.Control strategy for dynamic var compensation[J].Electric Power Automation Equipment,2009,29(5):89-93.
[5]宋昭昭,马小平,汪毅,等.基于直接电流控制的D-STATCOM动态建模与系统仿真[J].电测与仪表,2012,49(6):57-60.Song Zhaozhao,Ma Xiaoping,Wang Yi,et al.D-STATCOM mathematical modeling and system simulation based on direct current control[J].Electrical Measurement&Instrumentation,2012,49(6):57-60.
[6]隋龙弟,郑益慧,王昕,等.基于PAM+PWM级联多电平逆变器的SVG的研究[J].电力系统保护与控制,2014,(7):52-59.Sui Longdi,Zheng Yihui,Wang Xin,et al.Research of cascade SVG based on PAM+PWM inverter[J].Power System Protection and Control,2014,(7):52-59.
[7]杨荣峰,随顺科,徐榕,等.级联SVG控制策略及死区补偿技术研究[J].电机与控制学报,2014,18(10):36-41.Yang Rongfeng,Sui Shunke,Xu Rong,et al.Research on cascaded SVG control strategy and dead-time compensation techniques[J].Electric Machines and Control,2014,18(10):36-41.
[8]张晓红,孙丽玲.基于SVPWM控制的STATCOM-BESS特性分析与仿真[J].电测与仪表,2014,51(18):62-67.Zhang Xiaohong,Sun Liling.Characteristic Analysis and simulation of the STATCOM-BESS based on the SVPWM control[J].Electrical Measurement&Instrumentation,2014,51(18):62-67.
[9]杨昆,谢川,陈国柱,等.基于频率自适应谐振控制器的静止无功发生器电流控制[J].电工技术学报,2014,29(8):248-254.Yang Kun,Xie Chuan,Chen Guozhu.Frequency Adaptive resonant controller based current control of SVG[J].Transactions of China Electro technical Society,2014,29(8):248-254.
[10]李付亮,周有庆,吴涛,等.基于瞬时无功理论的先进静止无功发生器的研究[J].电力系统保护与控制,2010,38(1):75-78,124.Li Fuliang,Zhou Youqing,Wu Tao,et al.Design of advanced static var generator based on the instantaneous reactive-power theory[J].Power System Protection and Control,2010,38(1):75-78,124.
[11]刘俊杰,赵钢,李彪,等.基于新型电流直接控制策略的SVG仿真研究[J].电网与清洁能源,2011,27(6):21-24.Liu Junjie,Zhao Gang,Li Biao,et al.Simulation and Study of SVG based on new direct current control strategy[J].Advances of Power System&Hydroelectric Engineering,2011,27(6):21-24.
[12]戴祥臣,任国臣,贾书文,等.SVG无功功率稳定性控制策略的研究[J].辽宁工业大学学报(自然科学版),2015,(5):290-294.Dai Xiangchen,Ren Guochen,Jia Shuwen,et al.Research on SVG reactive power stability control strategy[J].Journal of Liaoning Institute of Technology(Natural Science Edition),2015,(5):290-294.
[13]舒泽亮,丁娜,郭育华,等.基于SVPWM的STATCOM电压电流双环控制[J].电力自动化设备,2008,28(9):27-30.Shu Zeliang,Ding Na,Guo Yuhua,et al.SVPWM-based voltageloop and current-loop controls of STATCOM[J].Electric Power Automation Equipment,2008,28(9):27-30.
[14]舒泽亮,汤坚,郭育华,等.基于空间矢量双滞环策略的STATCOM直接电流控制方法[J].中国电机工程学报,2007,27(25):103-107.Shu Zeliang,Tang Jian,Guo Yuhua,et al.A Novel Direct Current Control for STATCOM Using Space Vector Based Double Hysteresis Scheme[J].Proceedings of the Chinese Society for Electrical Engineering,2007,27(25):103-107.
[15]孙晨辰.配电系统低压静止无功发生器的控制策略与装置研究[D].西安理工大学,2013.
[16]刘龙龙,马晓春.VSC-MTDC输电系统的新型混合式控制策略[J].中国电力,2014,47(8):51-56.Liu Longlong,Ma Xiaochun.A Novel Hybrid Control Strategy for VSC-MTDC Transmission System[J].Electric Power,2014,47(8):51-56.
[17]管清伟.VSC-MTDC并联运行及其电压控制[D].北京交通大学,2012.
[2]黄知超,杨升振,延红艳,等.基于dq坐标系有功无功电流解耦空间电压矢量的STATCOM控制方法[J].电测与仪表,2012,49(12):32-36,45.Huang Zhichao,Yang Shengzhen,Yan Hongyan,et al.A control method for SVPWM-based STATCOM using active-reactive current decouple under dq coordinate system[J].Electrical Measurement&Instrumentation,2012,49(12):32-36,45.
[3]马春明,解大,余志文,等.SVG的电压控制策略[J].电力自动化设备,2013,33(3):96-99,107.Ma Chunming,Xie Da,Yu Zhiwen,et al.Voltage control strategy of SVG[J].Electric Power Automation Equipment,2013,33(3):96-99,107.
[4]龚锦霞,卢婧婧,解大,等.一种新型动态无功补偿器的控制算法[J].电力自动化设备,2009,29(5):89-93.Gong Jinxia,Lu Jingjing,Xie Da,et al.Control strategy for dynamic var compensation[J].Electric Power Automation Equipment,2009,29(5):89-93.
[5]宋昭昭,马小平,汪毅,等.基于直接电流控制的D-STATCOM动态建模与系统仿真[J].电测与仪表,2012,49(6):57-60.Song Zhaozhao,Ma Xiaoping,Wang Yi,et al.D-STATCOM mathematical modeling and system simulation based on direct current control[J].Electrical Measurement&Instrumentation,2012,49(6):57-60.
[6]隋龙弟,郑益慧,王昕,等.基于PAM+PWM级联多电平逆变器的SVG的研究[J].电力系统保护与控制,2014,(7):52-59.Sui Longdi,Zheng Yihui,Wang Xin,et al.Research of cascade SVG based on PAM+PWM inverter[J].Power System Protection and Control,2014,(7):52-59.
[7]杨荣峰,随顺科,徐榕,等.级联SVG控制策略及死区补偿技术研究[J].电机与控制学报,2014,18(10):36-41.Yang Rongfeng,Sui Shunke,Xu Rong,et al.Research on cascaded SVG control strategy and dead-time compensation techniques[J].Electric Machines and Control,2014,18(10):36-41.
[8]张晓红,孙丽玲.基于SVPWM控制的STATCOM-BESS特性分析与仿真[J].电测与仪表,2014,51(18):62-67.Zhang Xiaohong,Sun Liling.Characteristic Analysis and simulation of the STATCOM-BESS based on the SVPWM control[J].Electrical Measurement&Instrumentation,2014,51(18):62-67.
[9]杨昆,谢川,陈国柱,等.基于频率自适应谐振控制器的静止无功发生器电流控制[J].电工技术学报,2014,29(8):248-254.Yang Kun,Xie Chuan,Chen Guozhu.Frequency Adaptive resonant controller based current control of SVG[J].Transactions of China Electro technical Society,2014,29(8):248-254.
[10]李付亮,周有庆,吴涛,等.基于瞬时无功理论的先进静止无功发生器的研究[J].电力系统保护与控制,2010,38(1):75-78,124.Li Fuliang,Zhou Youqing,Wu Tao,et al.Design of advanced static var generator based on the instantaneous reactive-power theory[J].Power System Protection and Control,2010,38(1):75-78,124.
[11]刘俊杰,赵钢,李彪,等.基于新型电流直接控制策略的SVG仿真研究[J].电网与清洁能源,2011,27(6):21-24.Liu Junjie,Zhao Gang,Li Biao,et al.Simulation and Study of SVG based on new direct current control strategy[J].Advances of Power System&Hydroelectric Engineering,2011,27(6):21-24.
[12]戴祥臣,任国臣,贾书文,等.SVG无功功率稳定性控制策略的研究[J].辽宁工业大学学报(自然科学版),2015,(5):290-294.Dai Xiangchen,Ren Guochen,Jia Shuwen,et al.Research on SVG reactive power stability control strategy[J].Journal of Liaoning Institute of Technology(Natural Science Edition),2015,(5):290-294.
[13]舒泽亮,丁娜,郭育华,等.基于SVPWM的STATCOM电压电流双环控制[J].电力自动化设备,2008,28(9):27-30.Shu Zeliang,Ding Na,Guo Yuhua,et al.SVPWM-based voltageloop and current-loop controls of STATCOM[J].Electric Power Automation Equipment,2008,28(9):27-30.
[14]舒泽亮,汤坚,郭育华,等.基于空间矢量双滞环策略的STATCOM直接电流控制方法[J].中国电机工程学报,2007,27(25):103-107.Shu Zeliang,Tang Jian,Guo Yuhua,et al.A Novel Direct Current Control for STATCOM Using Space Vector Based Double Hysteresis Scheme[J].Proceedings of the Chinese Society for Electrical Engineering,2007,27(25):103-107.
[15]孙晨辰.配电系统低压静止无功发生器的控制策略与装置研究[D].西安理工大学,2013.
[16]刘龙龙,马晓春.VSC-MTDC输电系统的新型混合式控制策略[J].中国电力,2014,47(8):51-56.Liu Longlong,Ma Xiaochun.A Novel Hybrid Control Strategy for VSC-MTDC Transmission System[J].Electric Power,2014,47(8):51-56.
[17]管清伟.VSC-MTDC并联运行及其电压控制[D].北京交通大学,2012.