分时电价下直流微网优化运行和容量配置研究
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摘要
针对小型直流微网的优化运行和容量配置问题,以含直流负荷、蓄电池、光伏的直流微网为研究对象,综合考虑各组成部分成本和收益,建立以用户侧日收益最大为目标函数的微网能量优化模型。采用粒子群算法求解优化问题,得到系统优化运行策略和最优容量配置,并以某高校实验楼照明系统为例进行计算,得到其调度曲线,提出该系统最优配置的计算方法。研究结果表明,该方法与直接采用"自发自用,余电上网"方式相比,收益增加了17.29%,说明该调度方法能有效地处理分时电价下的直流微网优化运行和容量配置的问题。
In order to solve the optimization operation and capacity allocation of small DC microgrid containing the DC load, battery and photovoltaic, this paper establishes a microgrid energy optimization model with the maximum objective income of user side as the objective function by considering the cost and benefit of each component. Besides, the system optimization operation strategy and optimal capacity allocation are obtained by solving this optimization problem based on the particle swarm optimization algorithm. Finally, a lighting system of university laboratory is taken as an example to calculate the scheduling curve and the calculation method of the optimal configuration is proposed. It is shown that compared with the direct strategy called "using the power generated by itself and selling the rest ", the revenue of optimization scheduling increases by 17.29%. The problem of DC micro-network optimization operation and capacity allocation under time-of-use electricity price can be effectively dealt with.
In order to solve the optimization operation and capacity allocation of small DC microgrid containing the DC load, battery and photovoltaic, this paper establishes a microgrid energy optimization model with the maximum objective income of user side as the objective function by considering the cost and benefit of each component. Besides, the system optimization operation strategy and optimal capacity allocation are obtained by solving this optimization problem based on the particle swarm optimization algorithm. Finally, a lighting system of university laboratory is taken as an example to calculate the scheduling curve and the calculation method of the optimal configuration is proposed. It is shown that compared with the direct strategy called "using the power generated by itself and selling the rest ", the revenue of optimization scheduling increases by 17.29%. The problem of DC micro-network optimization operation and capacity allocation under time-of-use electricity price can be effectively dealt with.
引文
[1]鲁宗相,王彩霞,闵勇,等.微电网研究综述[J].电力系统自动化,2007,31(19) :100-107.LU Zong-xiang,WANG Cai-xia,MIN Yong,et al.Overview on microgrid research[J].Automation of Electric Power Systems,2007,31(19) :100-107.
[2]王晓虹,艾芊.直流微电网在配电系统中的研究现状与前景[J].低压电器,2012(5):1-7.WANG Xiao-hong,AI Qian.Present research situation and application prospects of power distribution system with DC Micro-Grid[J].Low Voltage Apparatus,2012(5):1-7.
[3]郑欢,江道灼,杜翼.交流配电网与直流配电网的经济性比较[J].电网技术,2013,37(12):3 368-3 374.ZHENG Huan,JIANG Dao-zhuo,DU Yi.Economic comparison of AC and DC distribution system[J].Power System Technology,2013,37(12):3-368-3-374.
[4]江道灼,郑欢.直流配电网研究现状与展望[J].电力系统自动化,2012,36(8):98-104.JIANG Dao-zhuo,ZHENG Huan.Research status and developing prospect of DC distribution network[J].Automation of Electric Power System,2012,36(8):98-104.
[5]刘家赢,韩肖清,王磊,等.直流微电网运行控制策略[J].电网技术,2014,38(9):2 356-2 362.LIU Jia-ying,HAN Xiao-qing,WANG Lei,et al.Operation and control strategy of DC microgrid[J].Power System Technology,2014,38(9):2 356-2 362.
[6]Cvetkovic I,Thacker T,Dong Dong,et al.Future home uninterruptible renewable energy system with vehicle-to-grid technology[C].IEEE Energy Conversion Congress and Exposition,2009.
[7]Aien M,Fotuhi-Firuzabad M,Rashidinejad M.Probabilistic optimal power flow incorrelated hybrid wind-photovoltaic power systems[J].IEEE Transactions on Smart Grid,2014,5(1):130-138.
[8]Prasad A R,Natarajan E.Optimization of integrated photovoltaic-wind generation systems with battery storage[J].Energy,2006,31(12):1 943-1 954.
[9]Xiong G,Chen C,Kishore S,et al.Smart (in-home) power scheduling for demand response on the smart grid[C].Innovative Smart Grid Technologies (ISGT).Hilton Anaheim:IEEE,2011.
[10]刘振国,胡亚平,陈炯聪,等.基于双层优化的微电网系统规划设计方法[J].电力系统保护与控制,2015,43(8):124-133.LIU Zhen-guo,HU Ya-ping,CHEN Jiong-cong,et al.A planning and design method for microgrid based on two-stage optimization[J].Power System Protection and Control,2015,43(8):124-133.
[11]宫娅宁,苏舒,林湘宁,等.独立光伏发电储能系统能量管理与经济调度研究[J].电力科学与技术学报,2017,32(2):3-9,30.GONG Ya-ning,SU Shu,LIN Xiang-ning,et al.Study on energy management and economic dispatch of independent photovoltaic energy storage system[J].Journal of Electric Power Science and Technology,2017,32(2):3-9,30.
[12]刘佳楠,熊宁,朱文广,等.电力市场环境下风光储联合运行优化策略[J].电力科学与技术学报,2017,32(1):11-15.LIU Jia-nan,XIONG Ning,ZHU Wen-guang et al.Optimization strategy of landscape storage cooperative operation in electricity market[J].Journal of Electric Power Science and Technology,2017,32(1):11-15.
[13]李培强,段克会,董彦婷,等.含分布式混合储能系统的光伏直流微网能量管理策略[J].电力系统保护与控制,2017,45(13):42-48.LI Pei-qiang,DUAN Ke-hui,DONG Yan-ting,et al.Photovoltaic dc microgrid energy management strategy with distributed hybrid energy storage system[J].Power System Protection and Control,2017,45(13):42-48.
[14]陈安伟,华浩瑞,李鹏,等.实时电价机制下交直流混合微网优化运行方法[J].电力系统保护与控制,2017,45(7):13-20.CHEN An-wei,HUA Hao-rui,LI Peng,et al.Optimized operation method of AC/DC hybrid microgrid under real-time electricity price mechanism[J].Power System Protection and Control,2017,45(7):13-20.
[15]Nottrott A,Kleissl J,Washom B.Energy dispatch schedule optimization and cost benefit analysis for grid-connected,photovoltaic-battery storage systems[J].Renewable Energy,2013,55(4):0-240.
[16]Yang H,Zhou W,Lu L,et al.Optimal sizingmethod for stand-alone hybrid solar-wind system with LPSP technology by using genetic algorithm[J].Solar Energy,2008,82(4):354-367.
[2]王晓虹,艾芊.直流微电网在配电系统中的研究现状与前景[J].低压电器,2012(5):1-7.WANG Xiao-hong,AI Qian.Present research situation and application prospects of power distribution system with DC Micro-Grid[J].Low Voltage Apparatus,2012(5):1-7.
[3]郑欢,江道灼,杜翼.交流配电网与直流配电网的经济性比较[J].电网技术,2013,37(12):3 368-3 374.ZHENG Huan,JIANG Dao-zhuo,DU Yi.Economic comparison of AC and DC distribution system[J].Power System Technology,2013,37(12):3-368-3-374.
[4]江道灼,郑欢.直流配电网研究现状与展望[J].电力系统自动化,2012,36(8):98-104.JIANG Dao-zhuo,ZHENG Huan.Research status and developing prospect of DC distribution network[J].Automation of Electric Power System,2012,36(8):98-104.
[5]刘家赢,韩肖清,王磊,等.直流微电网运行控制策略[J].电网技术,2014,38(9):2 356-2 362.LIU Jia-ying,HAN Xiao-qing,WANG Lei,et al.Operation and control strategy of DC microgrid[J].Power System Technology,2014,38(9):2 356-2 362.
[6]Cvetkovic I,Thacker T,Dong Dong,et al.Future home uninterruptible renewable energy system with vehicle-to-grid technology[C].IEEE Energy Conversion Congress and Exposition,2009.
[7]Aien M,Fotuhi-Firuzabad M,Rashidinejad M.Probabilistic optimal power flow incorrelated hybrid wind-photovoltaic power systems[J].IEEE Transactions on Smart Grid,2014,5(1):130-138.
[8]Prasad A R,Natarajan E.Optimization of integrated photovoltaic-wind generation systems with battery storage[J].Energy,2006,31(12):1 943-1 954.
[9]Xiong G,Chen C,Kishore S,et al.Smart (in-home) power scheduling for demand response on the smart grid[C].Innovative Smart Grid Technologies (ISGT).Hilton Anaheim:IEEE,2011.
[10]刘振国,胡亚平,陈炯聪,等.基于双层优化的微电网系统规划设计方法[J].电力系统保护与控制,2015,43(8):124-133.LIU Zhen-guo,HU Ya-ping,CHEN Jiong-cong,et al.A planning and design method for microgrid based on two-stage optimization[J].Power System Protection and Control,2015,43(8):124-133.
[11]宫娅宁,苏舒,林湘宁,等.独立光伏发电储能系统能量管理与经济调度研究[J].电力科学与技术学报,2017,32(2):3-9,30.GONG Ya-ning,SU Shu,LIN Xiang-ning,et al.Study on energy management and economic dispatch of independent photovoltaic energy storage system[J].Journal of Electric Power Science and Technology,2017,32(2):3-9,30.
[12]刘佳楠,熊宁,朱文广,等.电力市场环境下风光储联合运行优化策略[J].电力科学与技术学报,2017,32(1):11-15.LIU Jia-nan,XIONG Ning,ZHU Wen-guang et al.Optimization strategy of landscape storage cooperative operation in electricity market[J].Journal of Electric Power Science and Technology,2017,32(1):11-15.
[13]李培强,段克会,董彦婷,等.含分布式混合储能系统的光伏直流微网能量管理策略[J].电力系统保护与控制,2017,45(13):42-48.LI Pei-qiang,DUAN Ke-hui,DONG Yan-ting,et al.Photovoltaic dc microgrid energy management strategy with distributed hybrid energy storage system[J].Power System Protection and Control,2017,45(13):42-48.
[14]陈安伟,华浩瑞,李鹏,等.实时电价机制下交直流混合微网优化运行方法[J].电力系统保护与控制,2017,45(7):13-20.CHEN An-wei,HUA Hao-rui,LI Peng,et al.Optimized operation method of AC/DC hybrid microgrid under real-time electricity price mechanism[J].Power System Protection and Control,2017,45(7):13-20.
[15]Nottrott A,Kleissl J,Washom B.Energy dispatch schedule optimization and cost benefit analysis for grid-connected,photovoltaic-battery storage systems[J].Renewable Energy,2013,55(4):0-240.
[16]Yang H,Zhou W,Lu L,et al.Optimal sizingmethod for stand-alone hybrid solar-wind system with LPSP technology by using genetic algorithm[J].Solar Energy,2008,82(4):354-367.