基于SMDP的光柴储独立微网能量控制策略优化  

SMDP Based Optimization of Energy Control Strategy for Photovoltaic-diesel-battery Stand-alone Microgrid

作　　者：周康[1] 唐昊[1] 江琦[1] 吕凯[1] 蒋兰海 ZHOU Kang TANG Hao JIANG Qi LYU Kai JIANG Lanhai(School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, Chin)

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽省合肥市230009

出　　处：《电力系统自动化》2016年第21期154-160,共7页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(61573126);教育部新世纪优秀人才计划资助项目(NCET-11-0626);高等学校博士学科点专项科研基金资助项目(20130111110007)~~

摘　　要：考虑含光伏发电装置、储能装置和柴油发电机组的独立微网系统,以提高微网长期运行经济性为目标,研究微网能量管理优化问题。首先对系统的随机动态特性进行建模,即针对光伏发电和负荷变化的随机特性,将微网系统的能量控制建模为半马尔可夫决策过程(SMDP);然后采用随机动态规划算法对最优策略进行求解,得到微网在不同的光伏发电功率、负荷需求、储能荷电状态等级和柴油发电机组运行数量下对柴油发电机组和储能装置的最优控制行动。仿真结果说明了所建随机模型的合理性和优化方法的有效性。This paper presents an optimal control model for photovoltaic-diesel-battery stand-alone system. To minimize the long-term operating cost, the control strategy for the battery and diesel generators is optimized. That is, for the stochastic characteristics of the photovoltaic output and load demand, the energy control of the system is modeled as a semi-Markov decision process（ SMDP）. The system state is composed of the states of photovoltaic power and load demand, the quantity of operating diesel generators and the levels of battery state of charge. A stochastic dynamic programming method is adopted to find the optimal control strategy consisting of optimal actions for each state. The simulation result shows the rationality of the stochastic model and the effectiveness of the optimization method.

关 键 词：微网(微电网) 光伏发电 储能 半马尔可夫决策过程 

分 类 号：TM727[电气工程—电力系统及自动化]