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.
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)
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。
关键词
动态电压恢复器
FACTS
总谐波畸变率
谐波
电压质量
dynamic voltage restorer
FACTS:total harmonic distortion rate
harmonics
voltage quality
