单元串联型交流斩波无功补偿器的设计
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摘要
为实现交流斩波无功补偿器在较高电压等级配电网中的应用,本文基于传统交流斩波电路原理,提出了单元串联型交流斩波电路的无功补偿技术方案。文中设计了单元串联型无功补偿器的拓扑结构,介绍了单元串联型交流斩波电路的无功及谐波补偿原理,设计了基于多同步旋转坐标系的无功、谐波补偿和电压均衡控制方案。与传统的交流斩波无功补偿器相比,单元串联型无功补偿装置通过单元串联降低开关管的电压应力,工作可靠,耐压等级高。最后,通过仿真验证了新型装置的可行性和有效性。
In order to achieve the application of AC chopping reactive power compensator in the distribution network with higher voltage,in this paper, the reactive power compensation technology proposal for the unit-series AC chopping circuit based on the traditional AC chopping circuit principle is proposed. The topological structure of unit series reactive power compensator is designed, the reactive power and harmonic compensation principle of the unit series AC chopping circuit is introduced and the control proposal of the reactive power, harmonic compensation and voltage balance based on synchronous rotation coordinate is designed. The unit series AC chopping reactive power compensator, compare to the traditional AC chopping reactive power compensator, reduces voltage stress of the switch tube through the series unit, has reliable operation and high voltage withstand.Finally, both feasibility and effectiveness of the new device is verified by the simulation.
In order to achieve the application of AC chopping reactive power compensator in the distribution network with higher voltage,in this paper, the reactive power compensation technology proposal for the unit-series AC chopping circuit based on the traditional AC chopping circuit principle is proposed. The topological structure of unit series reactive power compensator is designed, the reactive power and harmonic compensation principle of the unit series AC chopping circuit is introduced and the control proposal of the reactive power, harmonic compensation and voltage balance based on synchronous rotation coordinate is designed. The unit series AC chopping reactive power compensator, compare to the traditional AC chopping reactive power compensator, reduces voltage stress of the switch tube through the series unit, has reliable operation and high voltage withstand.Finally, both feasibility and effectiveness of the new device is verified by the simulation.
引文
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[11]张友军,陈可,叶欣,等.Boost型三电平AC/AC变换器[J].电机与控制学报,2017,21(3):48-54.ZHANC Youjun, CHEN Ke, YE Xin, et al. Boost type three-level AC/AC converter[J]. Electric Machines and Control,2017,21(3):48-54.
[12]王银忠,牟宪民,许康.BOOST交流斩波型无功补偿器设计[J].电力系统及其自动化学报,2017,29(9):129-135.WANG Yinzhong,MU Xianmin,XU Kang,et al. Design of var compensator based on BOOST AC chopper[J]. Proceedings of the CSU-EPSA, 2017,29(9):129-135.
[13]师贺,李磊,管月,等.基于推挽正激交交变换器的三相三线无功和谐波综合补偿装置分析[J].电网技术,2017,41(4):1237-1245.SHI He,LI Lei,GUAN Yue,et al. Inverter-less APF based on push-pull forward AC-AC converter for var and harmonic compensation[J]. Power System Technology, 2017, 41(4):1237-1245.
[14] CHEN X, DAI K, XU C, et al. Reactive power compensation with improvement of current waveform quality for single-phase buck-type dynamic capacitor[C]//Applied Power Electronics Conference and Exposition(APEC),2016 IEEE.IEEE,2016:1358-1363.
[15]林志勇,江道灼,周月宾,等.基于级联H桥换流器的APF-STATCOM的控制与调制[J].电力系统保护与控制,2014,42(7):91-96.LIN Zhiyong, JIANG Daozhuo,ZHOU Yuebin,et al. Control and modulation for APF-STATCOM based on cascaded H-bridge converter[J]. Power System Protection and Control,2014,42(7):91-96.
[2]易桂平,胡仁杰,蒋玮,等.电网电压不平衡对STATCOM的影响及抑制[J].电工技术学报,2014,29(6):238-247.YI Guiping, HU Renjie, JIANG Wei, et al. Influence of grid voltage unbalance on STATCOM and the countermeasure[J]. Transactions of China Electrotechnical Society,2014,29(6):238-247.
[3] DIVAN D,SASTRY J. Inverter-less STATCOMs[C]//39th IEEE Power Electronics Specialists Conference(PESC2008),vol. 3. 2008:1372-1377.
[4]王银忠,牟宪民,许康.交流斩波型无功补偿器的输入滤波器设计[J].电力电容器与无功补偿,2016,37(3):19-23.WANG Yinzhong, MU Xianmin, XU Kang. Design on input filter of AC chopping reactive power compensator[J].Power Capacitor&Reactive Power Compensation,2016,37(3):19-23.
[5]吕自波,李楚杉,邓焰,等.一种适用于新型直接交交型有源滤波器的逐次分序谐波检测算法[J].中国电机工程学报,2015,35(6):1473-1481.LYU Zibo, LI Chushan, DENG Yan, et al. A harmonic detection method by separated sequence and order suitable for novel direct AC-AC based active power filters[J]. Proceedings of the CSEE, 2015,35(6):1473-1481.
[6] PRASAI A, SASTRY J, DIVAN D M. Dynamic capacitor(D-CAP):An integrated approach to reactive and harmonic compensation[J]. IEEE Transactions on Industry Applications,2010,46(6):2518-2525.
[7] LIU Quanwei,DENG Yan,HE Xiangning et al. Boost-type inverter-less shunt active power filter for var and harmonic compensation[J]. IET Power Electronics,2013,6(3):535-542.
[8]武伟,谢少军,汤雨,等.基于Buck交一交斩波器的无功补偿器拓扑与控制方法设计[J].电力系统自动化,2013,37(5):124-129.WU Wei,XIE Shaojun,TANG Yu,et al. Topology and control strategy design for Buck AC-AC chopper based var compensators[J]. Automation of Electric Power Systems,2013,37(5):124-129.
[9]何仰赞,温增银.电力系统分析:上册[M].武汉:华中科技大学出版社,2002.
[10] PRASAI A, DIVAN D, Scaling the dynamic capacitor(DCAP)to medium voltages[C]//2010 IEEE Energy Conversion Congress and Exposition[S.L.]:IEEE,2010:158-165.
[11]张友军,陈可,叶欣,等.Boost型三电平AC/AC变换器[J].电机与控制学报,2017,21(3):48-54.ZHANC Youjun, CHEN Ke, YE Xin, et al. Boost type three-level AC/AC converter[J]. Electric Machines and Control,2017,21(3):48-54.
[12]王银忠,牟宪民,许康.BOOST交流斩波型无功补偿器设计[J].电力系统及其自动化学报,2017,29(9):129-135.WANG Yinzhong,MU Xianmin,XU Kang,et al. Design of var compensator based on BOOST AC chopper[J]. Proceedings of the CSU-EPSA, 2017,29(9):129-135.
[13]师贺,李磊,管月,等.基于推挽正激交交变换器的三相三线无功和谐波综合补偿装置分析[J].电网技术,2017,41(4):1237-1245.SHI He,LI Lei,GUAN Yue,et al. Inverter-less APF based on push-pull forward AC-AC converter for var and harmonic compensation[J]. Power System Technology, 2017, 41(4):1237-1245.
[14] CHEN X, DAI K, XU C, et al. Reactive power compensation with improvement of current waveform quality for single-phase buck-type dynamic capacitor[C]//Applied Power Electronics Conference and Exposition(APEC),2016 IEEE.IEEE,2016:1358-1363.
[15]林志勇,江道灼,周月宾,等.基于级联H桥换流器的APF-STATCOM的控制与调制[J].电力系统保护与控制,2014,42(7):91-96.LIN Zhiyong, JIANG Daozhuo,ZHOU Yuebin,et al. Control and modulation for APF-STATCOM based on cascaded H-bridge converter[J]. Power System Protection and Control,2014,42(7):91-96.