高光伏渗透率配电网中分布式储能系统的优化配置方法  

Optimal Configuration Method of Distributed Energy Storage Systems in Distribution Network with High Penetration of Photovoltaic

作　　者：陶琼[1] 桑丙玉[1] 叶季蕾[1] 薛金花[1] 

机构地区：[1]中国电力科学研究院,南京210003

出　　处：《高电压技术》2016年第7期2158-2165,共8页High Voltage Engineering

基　　金：江苏省科技支撑计划-工业部分(BE2014023);中国电力科学研究院科技创新资金(NY83-16-036)~~

摘　　要：为促进分布式光伏与配电网协调发展,提高配电网对光伏发电的消纳能力,研究了高光伏渗透率配电网中分布式储能的优化配置方法。从分布式电源投资者的立场出发,并兼顾电网管理者的利益,以储能配置总容量为优化目标值,同时引入电网电压波动改善指标,以配电网运行状态、储能荷电状态、运行状态为约束条件,提出了高光伏渗透率配电网中多点分布式储能系统选址和定容的双层优化方法。并在下层优化模型中同步考虑储能与光伏出力、负荷间时序的配合,制定储能充放电的优化运行策略。最后通过河北承德地区配电网算例验证了所提方法的有效性和可行性,仿真结果表明采用该方法后储能配置容量可以减少85%,同步考虑储能、光伏、负荷的配合后电压改善指标可以提升18%。To promote the coordinated development between distributed photovoltaic （PV） systems and distribution network, and to improve the absorptive capacity for PV, we put forward a novel bi-level optimization method for locating and sizing of distributed energy storage system （EES） in the distribution network with high penetration of PV. Being in distributed power investor＇s shoes, and considering the interests of the network operators, the planning targets include the total capacity of ESS and voltage fluctuation improve index, and the constraints include operation constraint of distribution network, state of charge （SOC） constraint, and operation state constraint of EES. Meanwhile, the method also takes into account the storage optimization operation with the time-sequence matching between EES output, PV system output and load taken into consideration. Finally, the experimental results from the distribution network in Heibei Chengde verify the effectiveness and feasibility of the proposed method. The results reveal that, after using the method, the capacity of ESS can be reduced by 85%, and the voltage fluctuation improvement index can increase by 18% after considering the coordination of energy storage, photovoltaic, and load.

关 键 词：分布式光伏 配电网 分布式储能 优化配置 选址定容 双层优化 

分 类 号：TM732[电气工程—电力系统及自动化] TM615