摘要
针对高渗透率分布式光伏电源接入配电网后引起系统节点电压越限致使电能质量失优这一问题,提出一种基于用户侧储能电池改善配电网电压水平优化模型并最终获得储能电池最优容量的优化配置方法。该方法考虑储能电池参与配电网电压调节运行,以改善节点电压水平为目标,以储能电池充电功率限值及系统功率平衡为约束,通过遗传算法寻优,获得储能电池的最优充电功率值,进而可确定储能电池的最优配置容量。仿真算例表明该方法可有效地使系统中各节点电压的越限情况得到良好改善,同时可实现对储能电池容量的最优配置。
An optimal model based on customer-side energy storage batteries is put forward to improve the voltage level and an allocated method for optimal capacity of the batteries is finally obtained. In this method, energy storage batteries which participate in the voltage regulating operation of the distribution network is considered. Setting the improvement of the voltage level as the goal and with the upper and lower bounds of charging power capacity of the batteries and power balance of the system as constraint conditions, the method obtains the optimal charging power values of the batteries through the genetic algorithm and the optimal allocated capacity of every energy storage battery is also determined. Finally, the simulation example shows that the optimal method can effectively make the voltage violation of the nodes in the system get well improved and at the same time the optimal allocation of the batteries＇ capacity is realized.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第5期1157-1165,共9页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2013CB228201)
吉林省科技发展计划(20140101066JC)
关键词
高渗透光伏
电压越限
储能电池
遗传算法
最优容量配置
high penetrated distributed PV
voltage violation
energy storage batteries
genetic algorithm
optimal allocated capacity
