孤岛微电网下储能与SVG的电压频率协调控制策略  

Voltage-frequency Coordinated Control Strategy of Energy Storage and SVG in Island Microgrid

作　　者：赵晶晶 陈凌汉 ZHAO Jingjing;CHEN Linghan(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《电气传动》2023年第5期49-55,共7页Electric Drive

摘　　要：孤岛交流微电网中可再生能源的渗透率较高,其系统惯性较低,运行时一次调频主要依靠柴油机和储能等设备。利用储能和静止无功发生器(SVG)的快速调节特性,提出了一种基于电压调节的孤岛微电网调频控制策略。当孤岛微电网频率发生波动时,通过储能与SVG的协调控制改变负荷节点电压,利用负荷电压静态特性快速调节系统频率。在该控制策略中,储能和SVG均采用下垂控制,不需要远程通信,只需检测负荷节点电压和频率信号。该控制可减少微电网储能容量的配置,提高系统稳定性。通过DIgSILENT/PowerFactory仿真研究,对控制策略进行了验证。The penetration rate of renewable energy in the island AC microgrid was relatively high,and its system inertia was relatively low.The primary frequency regulation during island operation mainly relies on equipment such as diesel engines and energy storage.Using the fast adjustment characteristics of energy storage and static var generator(SVG),a frequency coordinated control strategy for island microgrid based on voltage adjustment was proposed.When the frequency of the island microgrid fluctuates,the load node voltage was changed through the coordinated control of energy storage and SVG,and the static characteristics of the load voltage was used to quickly adjust the system frequency.In this control strategy,both energy storage and SVG adopt droop control,no remote communication was required,and only load node voltage and frequency signals need to be detected.This control can reduce the configuration of the energy storage capacity of the microgrid and improve system stability.Through DIgSILENT/PowerFactory simulation research,the control strategy was verified.

关 键 词：微电网 下垂控制 SVG控制 一次调频 

分 类 号：TM76[电气工程—电力系统及自动化]