电力系统保护与控制2024，Vol.52Issue(10)：64-73,10.DOI:10.19783/j.cnki.pspc.240037
考虑功率最大输出与储能协调的光储VSG控制策略
VSG control strategy for a photovoltaic system with storage considering maximum power output and energy storage coordination
摘要
Abstract
In the traditional photovoltaic storage virtual synchronous generator(VSG)system,the battery handles the fluctuation of photovoltaic power by frequent charging and discharging.This leads to premature battery failure.To optimize battery operation,a VSG control strategy for a photovoltaic system with storage considering maximum power output and energy storage coordination is proposed.First,the proportional correlation between output frequency and DC side voltage deviation is established to realize maximum output of PV power and the inertia support of the VSG.Secondly,the sagging characteristic is used to control the battery power output to enhance the flexibility of battery energy management and this can realize the primary frequency regulation function of the system.Thirdly,a segmented control scheme to stabilize the DC side voltage is designed to ensure that the DC side voltage of the system is within a reasonable range when the system is working normally.Finally,simulation experiments verify that the proposed method not only retains the inertia support and primary frequency regulation functions of VSG control,but also realizes the maximization of PV power output and reduces the dependence on batteries.关键词
光储系统/虚拟同步发电机/直流侧电容电压/最大功率输出/分段控制Key words
photovoltaic storage system/virtual synchronous generator(VSG)/DC-link capacitor voltage/maximum power output/segmented control引用本文复制引用
杨欢红,严灵杰,黄文焘,郑颖,赵峰,叶婧元..考虑功率最大输出与储能协调的光储VSG控制策略[J].电力系统保护与控制,2024,52(10):64-73,10.基金项目
This work is supported by the National Natural Science Foundation of China(No.52177100). 国家自然科学基金项目资助(52177100) （No.52177100）
电力传输与功率控制教育部重点实验室课题项目资助(2022AA05) （2022AA05）
