一种光储直流微网经直流-异步电机并网控制方法
|
摘要
针对并网逆变器存在的谐波含量大、故障率高、控制方法复杂等问题,提出了一种光储直流微网经直流-异步电机并网控制方法。该光储直流微网中,光伏电源工作在MPPT模式,蓄电池储能系统工作在恒压模式,以维持直流母线电压恒定。直流电机拖动三相异步电机旋转,三相异步电机定子绕组与交流电网相连,当三相异步电机转速接近同步速时,并网开关合闸,实现光储直流微网并网运行以及直流电能和交流电能之间的相互转换。光储系统并网后,通过调节直流电机端电压对光储直流微网输出有功功率进行控制,使光储系统可以达到"削峰填谷"的目的。在MATLAB/Simulink中对本文所提出的光储微网及其并网环节进行建模,仿真结果验证了该控制方法的可行性和有效性。
In view of the problems of large harmonic content,high failure rate,and complex control method in gridconnected inverters,this paper proposed a grid-connected DC microgrid control method. In the photovoltaic storage DC microgrid,the photovoltaic power supply operated in MPPT mode and the battery energy storage system operated in constant voltage mode to maintain the constant DC bus voltage. The DC motor drove the three-phase asynchronous motor to rotate. The stator windings of the three-phase asynchronous motor connected to the AC grid. When the speed of the three-phase asynchronous motor approached the synchronous speed,the grid-connected switch was closed to realize the grid-connected operation of the DC storage system and the conversion between DC and AC power. After the photovoltaic storage system connected to the grid,the output active power of the photovoltaic storage DC microgrid was controlled by adjusting the terminal voltage of the DC motor,which can achieve the purpose of "cutting peak and filling valley". The proposed photovoltaic storage microgrid and its connection to grid were modeled in MATLAB/Simulink.The simulation results verified the feasibility and effectiveness of the control method.
In view of the problems of large harmonic content,high failure rate,and complex control method in gridconnected inverters,this paper proposed a grid-connected DC microgrid control method. In the photovoltaic storage DC microgrid,the photovoltaic power supply operated in MPPT mode and the battery energy storage system operated in constant voltage mode to maintain the constant DC bus voltage. The DC motor drove the three-phase asynchronous motor to rotate. The stator windings of the three-phase asynchronous motor connected to the AC grid. When the speed of the three-phase asynchronous motor approached the synchronous speed,the grid-connected switch was closed to realize the grid-connected operation of the DC storage system and the conversion between DC and AC power. After the photovoltaic storage system connected to the grid,the output active power of the photovoltaic storage DC microgrid was controlled by adjusting the terminal voltage of the DC motor,which can achieve the purpose of "cutting peak and filling valley". The proposed photovoltaic storage microgrid and its connection to grid were modeled in MATLAB/Simulink.The simulation results verified the feasibility and effectiveness of the control method.
引文
[1]孙颖,张建成.光伏发电系统利用直流-异步电机并网控制方法的研究[J].电机与控制应用,2016,43(1):72-76.SUN Y,ZHANG J C. Research on photovoltaic power generation system using DC-Asynchronous motor grid control Method[J]. Electric Machines&Control Application,2016,43(1):72-76.
[2]徐瑞东.光伏发电系统运行理论与关键技术研究[D].中国矿业大学,2012.XU R D. Research on operation theory and key technologies of photovoltaic power system[D]. China University of Mining and Technology,2012.
[3]林永朋,陶顺,肖湘宁.电压不平衡条件下并网逆变器的直流电压控制[J].电网技术,2015,39(6):1643-1649.LIN Y P,TAO X,XIAO X N. DC voltage control of grid-connected inverter under voltage imbalance[J].Power System Technology, 2015, 39(6):1643-1649.
[4]吴雷,徐鹏.三相并网逆变器直流分量瞬时抑制策略研究[J].电力电子技术,2016,50(2):56-59.WU L,XU P. Study on instantaneous suppression strategy of DC component of three-phase grid-connected inverter[J]. Power Electronics,2016,50(2):56-59.
[5]舒成维.三相光伏并网逆变器直流分量成因和抑制策略[J].通信电源技术,2017,34(6):281-282.SHU C W. Causes and suppression strategies of DC components of three-phase photovoltaic grid-connected inverters[J]. Telecom Power Technologies,2017,34(6):281-282.
[6]李涛,张晓锋,乔鸣忠,等.逆变器系统的低次谐波段线性消除[J].机械设计与制造,2012,(12):263-265.LI T,ZHANG X F,QIAO M Z,et al. Linear elimination of lower harmonic segments of the inverter system[J]. Mechanical Design and Manufacture and Automation,2012,(12):263-265.
[7]杨立永,刘伟鹏,陈智刚,等.单相光伏并网逆变器低次谐波抑制研究[J].电力电子技术,2015,49(1):70-73.YANG L Y,LIU W P,CHEN Z G,et al. Research on low-order harmonic suppression of single-phase photovoltaic grid-connected inverter[J]. Power Electronics,2015,49(1):70-73.
[8]许德志.并网逆变器与电网谐波交互的建模分析与抑制研究[D].上海:上海大学,2015.XU D Z. Modeling analysis and suppression of gridconnected inverter and grid harmonic interaction[D].Shanghai:Shanghai University,2015.
[9]周林,龙崦平,张密,等.带LCL滤波器的单相并网逆变器低频振荡现象分析[J].电力自动化设备,2014,34(1):67-71.ZHOU L,LONG Y P,ZHANG M,et al. Analysis of low frequency oscillation of single-phase grid-connected inverter with LCL filter[J]. Electric Power Automation Equipment,2014,34(1):67-71.
[10]唐拥林.双闭环直流电机调速系统设计改进[J].煤矿机械,2016,37(3):18-20.TANG Y L. Design improvement of double closed loop DC motor speed control system[J]. Coal Mine Machinery,2016,37(3):18-20.
[11]李育贤.直流电机调速系统仿真研究[J].计算机仿真,2011,28(5):205-208.LI Y X. Simulation research on DC motor speed control system[J]. Computer Simulation, 2011, 28(5):205-208.
[12]李显国,戴瑜兴,周稳,等.光储直流微网分散式协调控制运行策略[J].现代电子技术,2017,40(12):1-5.LI X G,DAI Y X,ZHOU W,et al. Optical storage DC micro-network decentralized coordinated control operation strategy[J]. Modern Electronics Technique,2017,40(12):1-5.
[13]赵润富.光储直流微网控制策略的研究[D].北京:北京交通大学,2014.ZHAO R F. Research on control strategy of optical storage DC microgrid[D]. Beijing:Beijing Jiaotong University,2014.
[14]吴红斌,顾缃,赵波,等.蓄电池充放电管理的全过程仿真研究[J].电子测量与仪器学报,2014,28(8):843-849.WU H B,GU X,ZHAO B,et al. Full process simulation study of battery charge and discharge management[J]. Journal of Electronic Measurement and Instrument,2014,28(8):843-849.
[15]史云鹏,王莹莹,李培芳.光伏系统中蓄电池充放电控制方案的探讨[J].太阳能学报,2005,(1):90-93.SHI Y P,WANG Y Y,LI P F. Discussion on battery charge and discharge control scheme in photovoltaic system[J]. Acta Energiae Solaris Sinica,2005,(1):90-93.
[2]徐瑞东.光伏发电系统运行理论与关键技术研究[D].中国矿业大学,2012.XU R D. Research on operation theory and key technologies of photovoltaic power system[D]. China University of Mining and Technology,2012.
[3]林永朋,陶顺,肖湘宁.电压不平衡条件下并网逆变器的直流电压控制[J].电网技术,2015,39(6):1643-1649.LIN Y P,TAO X,XIAO X N. DC voltage control of grid-connected inverter under voltage imbalance[J].Power System Technology, 2015, 39(6):1643-1649.
[4]吴雷,徐鹏.三相并网逆变器直流分量瞬时抑制策略研究[J].电力电子技术,2016,50(2):56-59.WU L,XU P. Study on instantaneous suppression strategy of DC component of three-phase grid-connected inverter[J]. Power Electronics,2016,50(2):56-59.
[5]舒成维.三相光伏并网逆变器直流分量成因和抑制策略[J].通信电源技术,2017,34(6):281-282.SHU C W. Causes and suppression strategies of DC components of three-phase photovoltaic grid-connected inverters[J]. Telecom Power Technologies,2017,34(6):281-282.
[6]李涛,张晓锋,乔鸣忠,等.逆变器系统的低次谐波段线性消除[J].机械设计与制造,2012,(12):263-265.LI T,ZHANG X F,QIAO M Z,et al. Linear elimination of lower harmonic segments of the inverter system[J]. Mechanical Design and Manufacture and Automation,2012,(12):263-265.
[7]杨立永,刘伟鹏,陈智刚,等.单相光伏并网逆变器低次谐波抑制研究[J].电力电子技术,2015,49(1):70-73.YANG L Y,LIU W P,CHEN Z G,et al. Research on low-order harmonic suppression of single-phase photovoltaic grid-connected inverter[J]. Power Electronics,2015,49(1):70-73.
[8]许德志.并网逆变器与电网谐波交互的建模分析与抑制研究[D].上海:上海大学,2015.XU D Z. Modeling analysis and suppression of gridconnected inverter and grid harmonic interaction[D].Shanghai:Shanghai University,2015.
[9]周林,龙崦平,张密,等.带LCL滤波器的单相并网逆变器低频振荡现象分析[J].电力自动化设备,2014,34(1):67-71.ZHOU L,LONG Y P,ZHANG M,et al. Analysis of low frequency oscillation of single-phase grid-connected inverter with LCL filter[J]. Electric Power Automation Equipment,2014,34(1):67-71.
[10]唐拥林.双闭环直流电机调速系统设计改进[J].煤矿机械,2016,37(3):18-20.TANG Y L. Design improvement of double closed loop DC motor speed control system[J]. Coal Mine Machinery,2016,37(3):18-20.
[11]李育贤.直流电机调速系统仿真研究[J].计算机仿真,2011,28(5):205-208.LI Y X. Simulation research on DC motor speed control system[J]. Computer Simulation, 2011, 28(5):205-208.
[12]李显国,戴瑜兴,周稳,等.光储直流微网分散式协调控制运行策略[J].现代电子技术,2017,40(12):1-5.LI X G,DAI Y X,ZHOU W,et al. Optical storage DC micro-network decentralized coordinated control operation strategy[J]. Modern Electronics Technique,2017,40(12):1-5.
[13]赵润富.光储直流微网控制策略的研究[D].北京:北京交通大学,2014.ZHAO R F. Research on control strategy of optical storage DC microgrid[D]. Beijing:Beijing Jiaotong University,2014.
[14]吴红斌,顾缃,赵波,等.蓄电池充放电管理的全过程仿真研究[J].电子测量与仪器学报,2014,28(8):843-849.WU H B,GU X,ZHAO B,et al. Full process simulation study of battery charge and discharge management[J]. Journal of Electronic Measurement and Instrument,2014,28(8):843-849.
[15]史云鹏,王莹莹,李培芳.光伏系统中蓄电池充放电控制方案的探讨[J].太阳能学报,2005,(1):90-93.SHI Y P,WANG Y Y,LI P F. Discussion on battery charge and discharge control scheme in photovoltaic system[J]. Acta Energiae Solaris Sinica,2005,(1):90-93.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |