Enhancement and optimization method of voltage stability considering minimum switching number of transmission lines

被引：0
|
作者：
Liu J. [1 ]
Wang L. [1 ]
Deng X. [2 ]
Jiao T. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo
[2] Jiaxiang Power Supply Company of State Grid Shandong Electric Power Company, Jining
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2024年 / 44卷 / 05期
基金：
中国国家自然科学基金;
关键词：
branch addition method; minimum switching number; stage solution strategy; transmission line switching; voltage stability;
D O I：
10.16081/j.epae.202311005
中图分类号：
学科分类号：
摘要：
In order to improve the voltage stability of power system，an enhancement control model of voltage stability based on transmission line switching is proposed，which takes the minimum switching number of transmission lines as the objective to meet the requirement of load margin improvement of power system. In order to flexibly construct the mathematic model of line switching，it is proposed to incorporate the line switching into the model of the original problem based on the branch addition method. In order to reduce the solution difficulty of the model，a stage solution strategy is proposed. The candidate switching set that can improve the system load margin is fast pre-screened based on the sensitivity of load margin on the line parameters，and the searching scope of 0-1 integer variables is reduced. The original problem is decomposed into two subproblems for iterative solution based on the external approximation and relaxation strategy，which further improves the speed and accuracy of model solution. The effectiveness of the proposed model and method is verified by the IEEE 118-bus and 662-bus power systems. © 2024 Electric Power Automation Equipment Press. All rights reserved.
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收藏
页码：217 / 224
页数：7
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