动态电压恢复器在电能质量监测中的应用研究  

Study on the Application of Dynamic Voltage Restorer in Power Quality Monitoring

作　　者：郭姚超 胡志军 刘智强 程龙 贾子昊 郭超 GUO Yao-chao;HU Zhi-jun;LIU Zhi-qiang;CHENG Long;JIA Zi-hao;GUO Chao(Pingdingshan Power Supply Company,State Grid Corporation of Henan,Pingdingshan 467000)

机构地区：[1]国网河南省电力公司平顶山供电公司,平顶山467000

出　　处：《环境技术》2024年第9期194-201,共8页Environmental Technology

基　　金：国网平顶山供电公司科技项目,项目编号:521760240005。

摘　　要：基于现代智能电网中电压质量问题的严重性,提出了一种基于动态电压恢复器(dynamic voltage restorer,DVR)的配电网电压质量改善策略。通过在MATLAB/Simulink中建立含DVR的配电网模型,分别在供电电压中加入3次和5次谐波进行仿真分析。结果表明,在未采用DVR时,配电网负载电压总谐波畸变率(total harmonic distortion,THD)分别高达18%和23%。采用所提DVR控制策略后,负载电压THD均降至4%以下,有效抑制了电压畸变,实现了平滑补偿。研究结果验证了该DVR控制策略在改善配电网电压质量方面的有效性,为智能电网建设提供了技术支持。A strategy for improving voltage quality in distribution networks based on a dynamic voltage restorer(DVR)was proposed,addressing the severity of voltage quality issues in modern smart grids.Simulations were conducted in MATLAB/Simulink,incorporating third and fifth harmonics into the supply voltage.The results indicated that without the DVR,the total harmonic distortion(THD)of the load voltage reached 18%and 23%,respectively.After applying the proposed DVR control strategy,the THD was reduced to below 4%,effectively suppressing voltage distortion and achieving smooth compensation.This demonstrates the effectiveness of the DVR control strategy in enhancing voltage quality,providing technical support for smart grid development.

关 键 词：动态电压恢复器 FACTS 总谐波畸变率 谐波 电压质量 

分 类 号：TM76[电气工程—电力系统及自动化]