光伏储能系统控制策略及并网研究  

Research on Control Strategy and Grid Connection of Photovoltaic Energy Storage System

作　　者：王一飞 WANG Yi-fei(State Grid Shanxi Electric Power Company Taiyuan Power Supply Company,Taiyuan 030000,China)

机构地区：[1]国网山西省电力公司太原供电公司,山西太原030000

出　　处：《电工电气》2022年第11期17-21,共5页Electrotechnics Electric

基　　金：国网江苏省电力公司科技项目(SGJSWA00FZJS1900984)。

摘　　要：针对光伏运行中由于局部阴影导致输出特性呈现多功率峰值点的问题,通过改进的粒子群算法实现局部阴影情况下光伏系统的MPPT控制,避免陷入局部最优。选择蓄电池作为储能装置,考虑双向DC/DC变换器原理和蓄电池SOC范围,确定充放电控制策略,根据光伏出力和负荷的大小关系,实时调整储能电池的充放电功率,保证功率平衡,维持母线电压稳定。建立光伏储能系统模型,分析了光储并网运行后系统的电压质量和光伏、储能的运行情况,并通过建立的仿真模型验证了策略的可行性。Partial shading contributes to multi-power peak point of output characteristics during the photovoltaic operation,so this paper makes improvement of particle swarm algorithm to realize the MPPT control of photovoltaic system to avoid local optimum when partial shading occurs.The author selects battery as the energy storage device,determines charge and discharge control strategy according to the principle of the bidirectional DC/DC converter and the SOC range of the battery,and adjusts the charge and discharge power of energy storage battery in real time based on the relationship between photovoltaic output and load size to ensure power balance and bus voltage stability.In this paper,the photovoltaic energy storage system model is established to analyze its voltage quality and operation of photovoltaic power and energy storage,and the feasibility of control strategy is verified by simulation model.

关 键 词：光伏 储能 控制策略 并网 

分 类 号：TM615[电气工程—电力系统及自动化]