并网型光伏发电站规模化分布式储能单元能量智能均衡控制方法  

Intelligent Energy Balance Control Method for Large-scale Distributed Energy Storage Unit of Grid Connected Photovoltaic Power Station

作　　者：查伟伟 徐敏 吴极 张永梅 ZHA Weiwei;XU Min;WU Ji;ZHANG Yongmei(Information and Communication Branch of State Grid Anhui Electric Power Co.,Ltd.,Hefei 230061,China)

机构地区：[1]国网安徽省电力有限公司信息通信分公司,安徽合肥230061

出　　处：《微型电脑应用》2024年第10期169-172,181,共5页Microcomputer Applications

摘　　要：为了保证并网型光伏发电站规模化分布式储能单元放电、充电时没有能量差值,实现能量均衡,提出并网型光伏发电站规模化分布式储能单元能量智能均衡控制方法。分析并网型光伏发电站规模化分布式储能单元结构,基于安时积分法提取储能单元能量的动态变化特征;引入能量均衡因子改进下垂控制方法,设计线路阻抗影响下的自适应均衡控制策略,控制输出电流无异常,实现能量智能均衡控制。实验结果显示:所提方法使用下,并网型光伏发电站3个储能单元放电、充电时能量差值都为0%,输出电流的差值是0,可实现分布式储能单元能量智能均衡。In order to realize no energy difference when the large-scale distributed energy storage units of grid connected photo-voltaic power stations discharge and charge,and to achieve energy balance,an intelligent energy balance control method for large-scale distributed energy storage units of grid connected photovoltaic power stations is proposed.This paper analyzes the structure of large-scale distributed energy storage unit of grid connected photovoltaic power station,and extract the dynamic change characteristics of energy storage unit based on ampere hour integration method.An energy balance factor is introduced to improve the droop control method,and an adaptive balance control strategy under the influence of line impedance is designed to control the output current without abnormality and realize energy intelligent balanced control.The experimental results show when the proposed method is used,the energy difference of the three energy storage units of grid connected photovoltaic power station is 0%when discharging and charging,and the difference of output current is O,which can achieve intelligent energy balance of distributed energy storage units.

关 键 词：并网型电站 光伏发电站 分布式储能 能量均衡 

分 类 号：TM732[电气工程—电力系统及自动化]