面向工业园区电压暂降治理的构网型储能逆变器控制策略研究  

Research on the control strategy of grid-forming inverter for voltage sag control in industrial parks

作　　者：刘曼佳 凌在汛 熊亮雳 游力 阮佳楠 方支剑 张盛 LIU Manjia;LING Zaixun;XIONG Liangli;YOU Li;RUAN Jianan;FANG Zhijian;ZHANG Sheng;无(Electric Power Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China;Hubei FYDL Electric Power Science&Research Co.,Ltd.,Wuhan 430077,China;School of Automation,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]湖北方源东力电力科学研究有限公司,湖北武汉430077 [3]中国地质大学(武汉)自动化学院,湖北武汉430074

出　　处：《供用电》2023年第8期34-42,共9页Distribution & Utilization

基　　金：国家电网有限公司科技项目(5108-202218280A-2-311-XG)。

摘　　要：电压暂降会显著影响工业园区重要敏感负荷的经济运行,是现代制造业面临的主要电能质量问题。将构网型储能逆变器应用于含储能电池的工业园区中,根据工业园区并网点电压暂降深度的差异,提出了一套基于构网型储能逆变器的电压暂降分级治理策略。当电压暂降深度较低时,利用构网型储能逆变器的电压支撑能力降低或者消除电压暂降的影响;当电压暂降深度较高时,依靠构网型储能逆变器的孤岛运行能力维持负荷的正常运行,从而实现了对工业园区电压暂降的治理。最后搭建仿真模型进行验证,结果表明,构网型储能逆变器控制方案在相同工况下可以有效降低电压暂降深度,实现电压跌落的补偿。Voltage sags can significantly affect the economic operation of important sensitive loads in industrial parks,and are the main power quality issues faced by modern manufacturing industries.This article applies grid-forming inverter to industrial parks containing energy storage batteries.Based on the differences in voltage sag depth at the grid connection points in industrial parks,a voltage sag hierarchical control strategy based on grid-forming inverter is proposed.When the depth of voltage sag is low,the voltage support capability of the grid type energy storage inverter is utilized to reduce or eliminate the impact of voltage sag;When the depth of voltage sag is high,relying on the islanding operation ability of the grid-forming inverter to maintain the normal operation of the load,thus achieving the control of voltage sag in industrial parks.Finally,a simulation model was built for verification,and the results showed that the control scheme of the grid-forming inverter can effectively reduce the depth of voltage sag and achieve compensation for voltage sag under the same working conditions.

关 键 词：电压暂降 工业园区 构网型储能逆变器 分级治理 控制策略 

分 类 号：TM72[电气工程—电力系统及自动化]