光储微电网并网模式协调控制策略
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摘要
为了有效抑制光伏输出的随机性、间歇性对大电网所产生的不利影响,提高光伏并网的友好性,深入研究了光伏-储能微电网系统在并网运行模式下的协调控制框架及相应的控制策略。通过对光伏-储能微电网系统中的功率变换器的恒功率控制和直流母线电压无静差跟踪控制策略进行协调、整合,在确保光伏-储能微电网系统向大电网提供所需的有功和无功功率的同时,有效维持了微电网系统的稳定运行。通过Matlab/Simulink平台开展了仿真研究,仿真结果验证了各控制策略的有效性。
For an effective suppression of negative effects caused by the random and intermit nature of photovoltaic(PV)generations on the grid and to make the PV systems more grid-friendly,coordinated control frameworks and the corresponding control strategies for micro-grid system with PV and energy storage units in grid connected operation are studied.Constant power control and DC bus zero-error tracking control strategies are incorporated,so that the control strategies can ensure that the micro-grid system can supply specified active and reactive powers to the grid,and maintain a stable operation of the micro-grid system.A simulation is carried out on the Matlab/Simulink platform,and simulation results show the validity of each coordinated control strategy.
For an effective suppression of negative effects caused by the random and intermit nature of photovoltaic(PV)generations on the grid and to make the PV systems more grid-friendly,coordinated control frameworks and the corresponding control strategies for micro-grid system with PV and energy storage units in grid connected operation are studied.Constant power control and DC bus zero-error tracking control strategies are incorporated,so that the control strategies can ensure that the micro-grid system can supply specified active and reactive powers to the grid,and maintain a stable operation of the micro-grid system.A simulation is carried out on the Matlab/Simulink platform,and simulation results show the validity of each coordinated control strategy.
引文
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[11]王成山,李琰,彭克(Wang Chengshan,Li Yan,Peng Ke).分布式电源并网逆变器典型控制方法综述(Overviewof typical control method for grid-connected inverters ofdistributed generation)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2012,24(2):12-20.
[2]孟军,汪沨,刘蓓,等(Meng Jun,Wang Feng,Liu Pei,et al).分布式发电条件下配电网故障恢复现状与展望(Review and prospect of service restoration algorithm of distribution networks with distributed generation)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(1):46-50,67.
[3]Kim Yun-Su,Kim Eung-Sang,Moon Seung-Il.Frequency and voltage control strategy of standalone microgrids with high penetration of intermittent renewable generation systems[J].IEEE Trans on Power Systems,2016,31(1):718-728.
[4]Zheng Zhixue,Wang Xiaoyu,Li Yongdong.A control method for grid-friendly photovoltaic systems with hybrid energy storage units[C]//IEEE 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies.Weihai,China,2011:1437-1440.
[5]Manganiello P,Ricco M,Petrone G,et al.Optimization of perturbative PV MPPT methods through online system identification[J].IEEE Trans on Industrial Electronics,2014,61(12):6812-6821.
[6]董密,杨建,彭可,等(Dong Mi,Yang Jian,Peng Ke,et al).光伏系统的零均值电导增量最大功率点跟踪控制(Zero average incremental conductance maximun powerpoint tracking control for photovoltaic system)[J].中国电机工程学报(Proceedings of the CSEE),2010,30(21):48-53.
[7]徐晓淳,刘春生,李锋(Xu Xiaochun,Liu Chunsheng,LiFeng).光伏系统MPPT的改进模糊控制(Improvedfuzzy control on MPPT method of solar system)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2014,26(9):81-84.
[8]张野,郭立,贾宏杰,等(Zhang Ye,Guo Li,Jia Hongjie,et al).基于平滑控制的混合储能系统能量管理方法(An energy management method of hybrid energy storagesystem based on smoothing control)[J].电力系统自动化(Automation of Electric Power Systems),2012,36(16):36-41.
[9]Gee A M,Robinson F V P,Dunn R W.Analysis of batterylifetime extension in a small-scale wind-energy system us-ing supercapacitors[J].IEEE Trans on Energy Conversion,2013,28(1):24-33.
[10]Mendis N,Muttaqi K M,Perera S.Management of battery-supercapacitor hybrid energy storage and synchronouscondenser for isolated operation of PMSG based variable-speed wind turbine generating systems[J].IEEE Trans onSmart Grid,2014,5(2):944-953.
[11]王成山,李琰,彭克(Wang Chengshan,Li Yan,Peng Ke).分布式电源并网逆变器典型控制方法综述(Overviewof typical control method for grid-connected inverters ofdistributed generation)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2012,24(2):12-20.