摘要
为了提高变电站站用电系统的供电可靠性,针对基于虚拟同步发电机技术的储能逆变器及其在光储微电网中的应用进行研究。介绍微网系统的拓扑结构和不同工作模式,设计微网各个子系统的参数,建立基于虚拟同步发电机(VSG)控制策略的储能逆变器数学模型,分析VSG并网和孤岛两种控制模式及其之间的切换。针对500k V河沥变电站光储微网系统,利用其中100k VA储能逆变器进行实验,验证VSG控制策略的可行性与有效性。
In order to improve power supply reliability of substation power supply system, energy storage inverters based on virtual synchronous generator （VSG） technology and its application in PV-storage micro-grid is studied in this paper. The topology of micro-grid and its different working modes are introduced and the parameters of the subsystems are designed. The mathematical model of energy storage inverter based on VSG is built. The grid-connected and stand-alone control modes of VSG and the transitions between them are analyzed. Through PV-storage micro-grid system in 500kV River Li substation experiment results, using 100kVA energy storage inverters, the feasibility and effectiveness of the VSG control strategy is verified.
出处
《电气技术》
2016年第11期36-40,共5页
Electrical Engineering
关键词
微电网
储能逆变器
虚拟同步发电机
可靠性
micro-grid
energy storage inverter
virtual synchronous generator （VSG）
reliability
