Research on Integrated Management of MMC-UPQC Power Quality Based on Passivity Control Under Unbalanced Grid

刘亨铭; 江畅; 程启明; 邵宇鹰; 彭鹏

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Research on Integrated Management of MMC-UPQC Power Quality Based on Passivity Control Under Unbalanced Grid

更新时间：2025-12-08

- Research on Integrated Management of MMC-UPQC Power Quality Based on Passivity Control Under Unbalanced Grid
- Vol. 47, Issue 4, Pages: 1344-1355(2021)
- 作者机构：
  
  1. 国家电网有限公司华东分部
  2. 上海市电站自动化技术重点实验室(上海电力大学自动化工程学院)
  3. 国网上海市电力有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 April 2021，
  
  Published：2021
- 稿件说明：
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刘亨铭, 江畅, 程启明, et al. Research on Integrated Management of MMC-UPQC Power Quality Based on Passivity Control Under Unbalanced Grid[J]. 2021, 47(4): 1344-1355.
DOI：

刘亨铭, 江畅, 程启明, et al. Research on Integrated Management of MMC-UPQC Power Quality Based on Passivity Control Under Unbalanced Grid[J]. 2021, 47(4): 1344-1355. DOI：

摘要

基于模块化多电平变换器（modular multilevel converter

MMC）的统一电能质量调节器（unified power quality conditioner

UPQC）可用于高电压下电压电流的电能质量综合治理

但当电网电压不平衡时

电流电压相位和幅值发生变化

给综合治理带来困难。将无源控制方法应用到MMC-UPQC中

以解决电网电压不平衡下的电能质量问题。首先

根据MMC-UPQC的拓扑结构

建立其在不平衡电网下的数学模型;然后

根据正负序分离方法

对检测量进行无需锁相环的分离;接着基于无源控制理论

搭建基于E-L模型的无源控制器

并将其应用到多电平、高电压的电能质量补偿系统中;最后

利用串联侧补偿电压和并联侧补偿电流的原理

通过协调控制综合解决不平衡状态下的电网电能质量问题。Matlab/Simulink平台实验结果发现基于所提无源控制器的MMC-UPQC系统响应时间小于0.05 s且总谐波失真度小于5%

验证了其解决电能质量综合治理问题的有效性和优越性。

Abstract

The unified power quality converter（UPQC） of modular multilevel converter（MMC） can be used for recovering power quality of voltage and current under high voltage

whereas it is difficult to comprehensively control the power quality when the voltage imbalance of the grid is remarkable. Therefore

the passive control method was applied to MMC-UPQC to solve the power quality problems under voltage imbalance. Firstly

based on the topological structure of MMC-UPQC

the mathematical model of MMC-UPQC was established under unbalanced power network. Secondly

the detection quantity was separated without phase-locked loop through a method of positive and negative sequence separation. Thirdly

based on the passive control theory

the PBC controller based on the E-L model was built and applied to power quality compensation system under multi-level and high-voltage. Finally

the principles of series side compensation voltage and parallel side compensation current were applied to the coordinated control for comprehensively solving the power quality problem of the grid under unbalanced state. The experimental results on the Matlab/Simulink platform show that the response time of the MMC-UPQC system based on the proposed passive controller is less than 0.05 s and the total harmonic distortion is less than 5%

which verifies the certain effectiveness and superiority in solving the problem of integrated power quality management.

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