Multi-objective Operation Optimization of Active Distribution Network Considering Three-phase Unbalance Regulation of Phase-switching Soft Open Points

被引：0

作者：

Min L. ^{[1
]}

Lou C. ^{[2
]}

Yang J. ^{[1
]}

Yu J. ^{[3
]}

机构：

[1] School of Engineering, University of Glasgow, Glasgow

[2] College of Information and Electrical Engineering, China Agricultural University, Beijing

[3] Scottish Power, Glasgow

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 12期

基金：

中国国家自然科学基金;

关键词：

active distribution network; phase-switching control; soft open point; symmetric semi-definite programming algorithm; three-phase unbalance;

D O I：

10.7500/AEPS20220917010

中图分类号：

学科分类号：

摘要：

Power loss and phase unbalance of three-phase voltage in active distribution networks (ADNs) become more and more serious due to the increasing unbalance of three-phase loads. As a kind of power electronic equipment which can replace the traditional tie switch, soft open point (SOP) provides a potential solution to reduce power loss and alleviate the unbalance problem. Therefore, a three-phase four-wire back-to-back voltage source converter is introduced as the topology of SOP, and the corresponding phase-switching control strategy is designed for the topology. On this basis, a multi-objective operation optimization model of ADNs based on three-phase four-wire phase-switching SOP is proposed to reduce the power loss and alleviate the voltage unbalance. The symmetric semi-definite programming algorithm is used to transform the original non-convex nonlinear model into a semi-definite programming model which is easy to solve by convex relaxation. This model can be used for three-phase decoupling and analysis of three-phase power grid. Finally, a case study is carried out in an improved IEEE 123-bus system to verify the feasibility and effectiveness of the proposed model and its solving algorithm. © 2023 Automation of Electric Power Systems Press. All rights reserved.

引用

页码：56 / 65

页数：9

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