考虑优化充放电策略的分布式储能容量配置方法

Distributed Energy Storage System Capacity Configuration Considering Optimized Charging and Discharging Strategy

近年来,光伏发电发展迅速,特别是分布式光伏在配电网中的渗透率不断提高,对配电网的经济运行产生了重要影响。在配电网中配置储能系统并进行优化控制,能够有效地改善配电网的运行效率。针对含高渗透率分布式光伏的配电网,考虑不同类型负荷的特性,计及储能系统运行的经济性,对其充放电策略进行优化。在此基础上,以含分布式光伏和储能系统配电网的网损最小为目标,对储能系统的容量进行最优配置。在IEEE 33节点系统中进行仿真验证,结果表明采用提出的考虑优化充放电策略的储能系统容量配置方法,不仅能够提高储能系统的经济收益,还可以降低配电网网损,提高了配电网运行的经济性。

In recent years,the rapid development of photovoltaic power generation,especially the increasing penetration of distributed photovoltaic generator in distribution network,has an important impact on the economic operation of distribution network.The allocation of energy storage and optimal control in distribution network can effectively improve the operation efficiency of distribution network.In this paper,the charging and discharging strategies of distributed photovoltaic power grid with high permeability are optimized according to the characteristics of different types of loads,considering the economy of energy storage operation.On this basis,the capacity of energy storage system is optimized with the objective of minimizing the loss of distribution network with distributed photovoltaic and energy storage.The simulation results in the IEEE 33-bus system show that the energy storage capacity allocation method considering optimized charging and discharging strategy proposed in this paper can not only improve the economic benefits of the energy storage system,but also reduce the loss of the distribution network and improve the economy of the distribution network.