改进连续集模型预测控制策略在平抑光伏功率波动中的应用
|
摘要
随着光伏渗透率的不断增加,光伏发电的波动性已经成为影响电能质量和电网稳定性的一个重要因素,为此提出了将一种改进连续集模型预测控制策略应用于含储能的分布式光伏发电系统,利用模型预测控制能够对系统阻抗模型进行预测,并增加了在线修正过程,仅使用储能变流器采集的本地数据,即可实现对光伏功率波动的抑制,并保证系统并网点电压的稳定,该方法不再需要监控系统,避免了通信延迟,提高了控制的实时性,同时有助于实现储能在分布式光伏发电系统中的即插即用。实验结果证明了该方法的有效性。
Random fluctuation in photovoltaic(PV) power plants becomes a serious problem affecting power quality and stability of power grid along with increasing penetration of PVs. This paper proposes a PV fluctuation damping control strategy for microgrid integrated with PV and energy storage system(ESS), based on an improved continuous control set model predictive control(CCS-MPC). The strategy has potential to predict impedance of the system using MPC. Furthermore, the proposal can keep improving accuracy of the impedance prediction online. In this method, the energy storage systems can be controlled to smooth PV power and regulate the PCC voltage of photovoltaic/storage system only with local data of ESS converter. In this way, monitoring system is not needed and communication delay is avoided. This method contributes to achieving the ‘plug and play' performance of the ESS in PV systems. Experimental results are presented to verify effectiveness of the method.
Random fluctuation in photovoltaic(PV) power plants becomes a serious problem affecting power quality and stability of power grid along with increasing penetration of PVs. This paper proposes a PV fluctuation damping control strategy for microgrid integrated with PV and energy storage system(ESS), based on an improved continuous control set model predictive control(CCS-MPC). The strategy has potential to predict impedance of the system using MPC. Furthermore, the proposal can keep improving accuracy of the impedance prediction online. In this method, the energy storage systems can be controlled to smooth PV power and regulate the PCC voltage of photovoltaic/storage system only with local data of ESS converter. In this way, monitoring system is not needed and communication delay is avoided. This method contributes to achieving the ‘plug and play' performance of the ESS in PV systems. Experimental results are presented to verify effectiveness of the method.
引文
[1]许晓燕,黄越辉,刘纯,等.分布式光伏发电对配电网电压的影响及电压越限的解决方案[J].电网技术,2010,34(10):140-146.Xu Xiaoyan,Huang Yuehui,Liu Chun,et al.Influence of distributed photovoltaic generation on voltage in distribution network and solution of voltage beyond limits[J].Power System Technology,2010,34(10):140-146(in Chinese).
[2]丁明,王伟胜,王秀丽,等.大规模光伏发电对电力系统影响综述[J].中国电机工程学报,2014,34(1):1-14.Ding Ming,Wang Weisheng,Wang Xiuli,et al.A review on the effect of large-scale PV generation on power systems[J].Proceedings of the CSEE,2014,34(1):1-14(in Chinese).
[3]Salimbeni A,Boi M,Marongiu I,et al.Integration of active filter and energy storage system for power quality improvement in microgrids[C]//2016 International Symposium on Power Electronics,Electrical Drives,Automation and Motion(SPEEDAM).Anacapri,Italy:IEEE,2016:709-714.
[4]Sekhar P C,Mishra S.Storage free smart energy management for frequency control in a diesel-PV-fuel cell-based hybrid AC microgrid[J].IEEE Transactions on Neural Networks and Learning Systems,2016,27(8):1657-1671.
[5]董伟杰,白晓民,朱宁辉,等.间歇式电源并网环境下电能质量问题研究[J].电网技术,2013,37(5):1265-1271.Dong Weijie,Bai Xiaomin,Zhu Ninghui,et al.Discussion on the power quality under grid-connection of intermittent power sources[J].Power System Technology,2013,37(5):1265-1271(in Chinese).
[6]Li J N,Wu Z,Zhou S Y,et al.Integrated PV capacity firming and energy time shift battery energy storage management using energyoriented optimization[J].IEEE Transactions on Industry Applications,2016,52(3):2607-2617.
[7]Stimoniaris D,Tsiamitros D,Dialynas E.Improved energy storage management and PV-active power control infrastructure and strategies for microgrids[J].IEEE Transactions on Power Systems,2016,31(1):813-820.
[8]李彦林,王明彦,郑载满.微网运行条件下储能并网VSC多目标控制策略[J].电网技术,2013,37(7):1792-1798.Li Yanlin,Wang Mingyan,Zheng Zaiman.A multi-objective control strategy for grid-connecting VSC under grid-connected operation of microgrid[J].Power System Technology,2013,37(7):1792-1798(in Chinese).
[9]Zhu Y X,Zhuo F,Shi H T.Power management strategy research for a photovoltaic-hybrid energy storage system[C]//2013 IEEE ECCEAsia Downunder.Melbourne,VIC,Australia:IEEE,2013:842-848.
[10]Li X J,Hui D,Lai X K.Battery energy storage station(BESS)-based smoothing control of photovoltaic(PV)and wind power generation fluctuations[J].IEEE Transactions on Sustainable Energy,2013,4(2):464-473.
[11]Lam R K,Yeh H G.PV ramp limiting controls with adaptive smoothing filterthrough a battery energy storage system[C]//Green Energy and Systems Conference(IGESC).California,USA:IEEE,2014:55-60.
[12]Kouro S,Perez M A,Rodriguez J,et al.Model predictive control:MPC's role in the evolution of power electronics[J].IEEE Industrial Electronics Magazine,2015,9(4):8-21.
[13]Scoltock J,Geyer T,Madawala U K.A model predictive direct current control strategy with predictive references for MV grid-connected converters with LCL-filters[J].IEEE Transactions on Power Electronics,2015,30(10):5926-5937.
[14]Mohamed I S,Zaid S A,Abu-Elyazeed M F,et al.Classical methods and model predictive control of three-phase inverter with output LCfilter for UPS applications[C]//2013 International Conference on Control,Decision and Information Technologies(Co DIT).Hammamet,Tunisia:IEEE,2013:483-488.
[15]Barros J D,Silva J F,JesuséA.Fast-predictive optimal control of NPC multilevel converters[J].IEEE Transactions on Industrial Electronics,2013,60(2):619-627.
[16]Rodriguez J,Pontt J,Silva C A,et al.Predictive current control of a voltage source inverter[J].IEEE Transactions on Industrial Electronics,2007,54(1):495-503.
[17]杨兴武,雷彪,欧阳武,等.单相H桥级联型APF模型预测控制方法研究[J].电网技术,2017,41(3):962-968.Yang Xingwu,Lei Biao,Ouyang Wu,et al.Model predictive control of single-phase cascaded H-bridge active power filter[J].Power System Technology,2017,41(3):962-968(in Chinese).
[18]陈启宏,罗潇汝,张立彦.三相四桥臂并网逆变器约束模型预测控制[J].电网技术,2018,42(2):555-563.Chen Qihong,Luo Xiaoru,Zhang Liyan.Constrained model predictive control for three-phase four-leg grid-tied inverter[J].Power System Technology,2018,42(2):555-563(in Chinese).
[19]黄新科,王环,王一波,等.光伏发电系统并网点电压升高调整原理及策略[J].电力系统自动化,2014,38(3):112-117.Huang Xinke,Wang Huan,Wang Yibo,et al.Principle and strategies of voltage rise regulation for grid-connected photovoltaic generation system at point of common coupling[J].Automation of Electirc Power Systems,2014,38(3):112-117(in Chinese).
[20]Cao D F,Zhang Y,Zhao Y,et al.Research on regulation technology of voltage quality in the distribution network connected with distributed PV system[C]//Proceedings of 2016 International Conference on Modeling,Simulation and Optimization Technologies and Applications(MSOTA 2016).Xiamen:MSOTA,2016:193-198.
[2]丁明,王伟胜,王秀丽,等.大规模光伏发电对电力系统影响综述[J].中国电机工程学报,2014,34(1):1-14.Ding Ming,Wang Weisheng,Wang Xiuli,et al.A review on the effect of large-scale PV generation on power systems[J].Proceedings of the CSEE,2014,34(1):1-14(in Chinese).
[3]Salimbeni A,Boi M,Marongiu I,et al.Integration of active filter and energy storage system for power quality improvement in microgrids[C]//2016 International Symposium on Power Electronics,Electrical Drives,Automation and Motion(SPEEDAM).Anacapri,Italy:IEEE,2016:709-714.
[4]Sekhar P C,Mishra S.Storage free smart energy management for frequency control in a diesel-PV-fuel cell-based hybrid AC microgrid[J].IEEE Transactions on Neural Networks and Learning Systems,2016,27(8):1657-1671.
[5]董伟杰,白晓民,朱宁辉,等.间歇式电源并网环境下电能质量问题研究[J].电网技术,2013,37(5):1265-1271.Dong Weijie,Bai Xiaomin,Zhu Ninghui,et al.Discussion on the power quality under grid-connection of intermittent power sources[J].Power System Technology,2013,37(5):1265-1271(in Chinese).
[6]Li J N,Wu Z,Zhou S Y,et al.Integrated PV capacity firming and energy time shift battery energy storage management using energyoriented optimization[J].IEEE Transactions on Industry Applications,2016,52(3):2607-2617.
[7]Stimoniaris D,Tsiamitros D,Dialynas E.Improved energy storage management and PV-active power control infrastructure and strategies for microgrids[J].IEEE Transactions on Power Systems,2016,31(1):813-820.
[8]李彦林,王明彦,郑载满.微网运行条件下储能并网VSC多目标控制策略[J].电网技术,2013,37(7):1792-1798.Li Yanlin,Wang Mingyan,Zheng Zaiman.A multi-objective control strategy for grid-connecting VSC under grid-connected operation of microgrid[J].Power System Technology,2013,37(7):1792-1798(in Chinese).
[9]Zhu Y X,Zhuo F,Shi H T.Power management strategy research for a photovoltaic-hybrid energy storage system[C]//2013 IEEE ECCEAsia Downunder.Melbourne,VIC,Australia:IEEE,2013:842-848.
[10]Li X J,Hui D,Lai X K.Battery energy storage station(BESS)-based smoothing control of photovoltaic(PV)and wind power generation fluctuations[J].IEEE Transactions on Sustainable Energy,2013,4(2):464-473.
[11]Lam R K,Yeh H G.PV ramp limiting controls with adaptive smoothing filterthrough a battery energy storage system[C]//Green Energy and Systems Conference(IGESC).California,USA:IEEE,2014:55-60.
[12]Kouro S,Perez M A,Rodriguez J,et al.Model predictive control:MPC's role in the evolution of power electronics[J].IEEE Industrial Electronics Magazine,2015,9(4):8-21.
[13]Scoltock J,Geyer T,Madawala U K.A model predictive direct current control strategy with predictive references for MV grid-connected converters with LCL-filters[J].IEEE Transactions on Power Electronics,2015,30(10):5926-5937.
[14]Mohamed I S,Zaid S A,Abu-Elyazeed M F,et al.Classical methods and model predictive control of three-phase inverter with output LCfilter for UPS applications[C]//2013 International Conference on Control,Decision and Information Technologies(Co DIT).Hammamet,Tunisia:IEEE,2013:483-488.
[15]Barros J D,Silva J F,JesuséA.Fast-predictive optimal control of NPC multilevel converters[J].IEEE Transactions on Industrial Electronics,2013,60(2):619-627.
[16]Rodriguez J,Pontt J,Silva C A,et al.Predictive current control of a voltage source inverter[J].IEEE Transactions on Industrial Electronics,2007,54(1):495-503.
[17]杨兴武,雷彪,欧阳武,等.单相H桥级联型APF模型预测控制方法研究[J].电网技术,2017,41(3):962-968.Yang Xingwu,Lei Biao,Ouyang Wu,et al.Model predictive control of single-phase cascaded H-bridge active power filter[J].Power System Technology,2017,41(3):962-968(in Chinese).
[18]陈启宏,罗潇汝,张立彦.三相四桥臂并网逆变器约束模型预测控制[J].电网技术,2018,42(2):555-563.Chen Qihong,Luo Xiaoru,Zhang Liyan.Constrained model predictive control for three-phase four-leg grid-tied inverter[J].Power System Technology,2018,42(2):555-563(in Chinese).
[19]黄新科,王环,王一波,等.光伏发电系统并网点电压升高调整原理及策略[J].电力系统自动化,2014,38(3):112-117.Huang Xinke,Wang Huan,Wang Yibo,et al.Principle and strategies of voltage rise regulation for grid-connected photovoltaic generation system at point of common coupling[J].Automation of Electirc Power Systems,2014,38(3):112-117(in Chinese).
[20]Cao D F,Zhang Y,Zhao Y,et al.Research on regulation technology of voltage quality in the distribution network connected with distributed PV system[C]//Proceedings of 2016 International Conference on Modeling,Simulation and Optimization Technologies and Applications(MSOTA 2016).Xiamen:MSOTA,2016:193-198.