A cooperative control strategy for power quality based on parallel grid-connected converters

LIANG Xiaorui

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

A cooperative control strategy for power quality based on parallel grid-connected converters

更新时间：2025-10-16

- A cooperative control strategy for power quality based on parallel grid-connected converters
- Vol. 44, Issue 1, Pages: 79-91(2025)
- 作者机构：
  
  南方电网公司新型智慧城市高品质供电联合实验室(深圳供电局有限责任公司),广东,深圳,518020
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM615
- Published：2025
- 稿件说明：
移动端阅览
LIANG Xiaorui. A cooperative control strategy for power quality based on parallel grid-connected converters[J]. 2025, 44(1): 79-91.
DOI：

LIANG Xiaorui. A cooperative control strategy for power quality based on parallel grid-connected converters[J]. 2025, 44(1): 79-91. DOI：

摘要

基于涉网变流器开展电能质量问题治理可以有效利用变流器的剩余容量，提高治理效益，但其往往只考虑跟网型(grid-following，GFL)控制，未能充分发挥多种类变流器的调控潜力。文中基于GFL和构网型(grid-forming，GFM)涉网变流器并联系统，提出谐波补偿、电压跌落抑制等协同控制策略。首先，介绍涉网变流器的基本控制原理及数学模型。其次，针对并联系统公共耦合点(point of common coupling，PCC)的谐波补偿问题，提出谐波分次补偿方法，增强谐波补偿的灵活性，实现谐波电流在不同容量变流单元间的合理分摊。针对PCC电压跌落问题，将并联系统状态总结为正常运行、仅GFL变流单元参与电压支撑、GFL和GFM变流单元共同支撑3种工况。经补偿容量计算和无功功率分配，PCC电压可始终保持在额定电压附近。最后，通过仿真验证所提策略的可行性与优越性。

Abstract

Power quality control based on grid-connected converter can effectively utilize the surplus capacity of the converter and improves the benefits. However

existing methods tend to only consider grid-following (GFL) control and fail to fully utilize the control potential of multiple converters. In this paper

a cooperative control strategy for harmonic compensation and voltage drop suppression is proposed based on a parallel system of GFL and grid-forming (GFM) converters. Firstly

the basic control principle and mathematical model of grid-connected converter are introduced. Secondly

to compensate the harmonics at the point of common coupling (PCC)

a harmonic sub-compensation method is proposed. This approach can improve the flexibility of harmonic compensation and reasonably apportion harmonic between grid-connected converter of different capacities. To support the PCC voltage

the parallel system can operate in three conditions:normal operation condition

condition of GFL support voltage independently and co-supported operating condition. Through compensation capacity calculation and reactive power allocation

the voltage at the PCC can maintain near the rated voltage. Finally

the feasibility and superiority of the proposed strategy are verified through simulations.

关键词

Keywords

references

Views

239

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Review of transient control strategies for grid-forming converters under grid voltage sag conditions

A neural network design for black-box identification of converter impedance models in arbitrary operating conditions

Identification of Voltage Pollution Source Based on Wavelet Transform in DC Active Distributed Network

Voltage sag waveform matching method based on cross approximate entropy

Identification of power quality disturbance in DC distribution network based on PSO-SVM

Related Author

LIN Yuxuan

CHEN Bing

ZHANG Chenyu

LI Danqi

WU Jianzhang

WANG Guodong

CHENG Li

SUN Dong

Related Institution

NARI Group Corporation State Grid Electric Power Research Institute

State Grid Jiangsu Electric Power Co., Ltd. Research Institute

State Grid Jiangsu Electric Power Research Institute

School of Electrical Engineering, Southeast University

State Grid Suzhou Power Supply Company of Jiangsu Electric Power Co., Ltd.

AI问答

⁰