Coordinated Control of Voltage Unbalance Compensation in Islanded Microgrid Based on Particle Swarm Optimization Algorithm

Jidong LAI; Tianyue XIE; Jianhui SU; Jialiang LIU; Chenguang ZHOU; Jiejie XU

doi:10.7500/AEPS20200108004

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Coordinated Control of Voltage Unbalance Compensation in Islanded Microgrid Based on Particle Swarm Optimization Algorithm

Application Research | 更新时间：2025-06-16

- Coordinated Control of Voltage Unbalance Compensation in Islanded Microgrid Based on Particle Swarm Optimization Algorithm
- Automation of Electric Power Systems Vol. 44, Issue 16, Pages: 121-129(2020)
- 作者机构：
  
  1. 合肥工业大学电气与自动化工程学院，安徽省合肥市 230009
  2. 光伏系统教育部工程研究中心（合肥工业大学），安徽省合肥市 230009
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.7500/AEPS20200108004
  CLC：
- Received：08 January 2020，
  
  Revised：2020-04-11，
  
  Published Online：29 June 2020，
  
  Published：25 August 2020
- 稿件说明：
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赖纪东,谢天月,苏建徽等.基于粒子群优化算法的孤岛微电网电压不平衡补偿协调控制[J].电力系统自动化,2020,44(16):121-129.

LAI Jidong,XIE Tianyue,SU Jianhui,et al.Coordinated Control of Voltage Unbalance Compensation in Islanded Microgrid Based on Particle Swarm Optimization Algorithm[J].Automation of Electric Power Systems,2020,44(16):121-129.
赖纪东,谢天月,苏建徽等.基于粒子群优化算法的孤岛微电网电压不平衡补偿协调控制[J].电力系统自动化,2020,44(16):121-129. DOI： 10.7500/AEPS20200108004.

LAI Jidong,XIE Tianyue,SU Jianhui,et al.Coordinated Control of Voltage Unbalance Compensation in Islanded Microgrid Based on Particle Swarm Optimization Algorithm[J].Automation of Electric Power Systems,2020,44(16):121-129. DOI： 10.7500/AEPS20200108004.

摘要

微电网系统孤岛运行条件下，其系统电压完全由网内众微电网逆变器协调运行提供支撑，微电网逆变器控制性能将决定网内供电电压质量的优劣。考虑到微电网中大量单相负荷的存在，系统负荷实则通常表征为不平衡，容易引起系统电压的不平衡。针对这一问题，以同时兼顾微电网逆变器端口电压及公共连接点(PCC)电压不平衡度控制为目标，从分析电压不平衡机理入手，提出一种基于粒子群优化算法的负序电压补偿算法。补偿算法以逆变器端口电压和PCC电压不平衡度作为约束条件建立目标函数，同时考虑逆变器间的环流问题，在实现逆变器端口及PCC电压不平衡控制的同时减小逆变器间的环流。最后，分别基于MATLAB及某电力电子实时仿真平台搭建了系统仿真模型和半实物实时仿真模型，仿真及实验结果验证了所提方法的正确性和有效性。

Abstract

The system voltage of microgrid in the islanded operation mode is fully supported by the coordinated operation of all microgrid inverters in the network. Thus

the supply voltage quality of the microgrid is highly dependent on the control performance of microgrid inverters. Due to the existence of a large number of single-phase loads

the system load is usually unbalanced

which causes system voltage unbalance. In solve this problem

aiming at controlling the unbalance degrees of voltages both at the inverter port and the point of common coupling (PCC)

this paper proposes a compensation algorithm for negative voltage based on the particle swarm optimization (PSO) algorithm

which starts from analysis on unbalance mechanism. The unbalance degrees of voltages at inverter port and PCC are taken as the constraint conditions to establish the objective function. At the same time

the problem of circulating current between inverters is also taken into account. Consequently

the circulating current among microgrid inverters is suppressed while the voltage unbalance degree is controlled. Finally

based on MATLAB and a power electronic real-time simulation platform

the system simulation model and the semi-physical real-time simulation model are built. The simulation and experimental results verify the correctness and effectiveness of the proposed method.

关键词

Keywords

references

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