摘要
电气距离(electrical distance,ED)是电网划分电压控制区域的主要依据。经典的ED计算方法与其改进方法都需利用潮流雅可比矩阵,这可能在电源和负荷随机性不断增强的背景下导致分区方案的频繁调整,增加无功电压管理的难度。因此,该文先在回顾ED经典定义的基础上,证明利用网络拓扑参数可近似地获得电力系统中一对节点在小扰动后的电压变化比值;然后,沿用经典ED的计算公式,给出一种基于网络拓扑计算ED的新方法;最后,将该文方法应用于NE‐39和NE‐68节点系统中,将得到的结果与经典方法的ED和分区方案进行比较,验证了该方法的有效性。
Electrical distance(ED)is the primary basis for dividing voltage control areas in power grids.Both classic methods and their improved versions for calculating electrical distance rely on the power flow Jacobian matrix,which may lead to frequent adjustments in partitioning schemes and increase the difficulty of reactive power and voltage management as the randomness of power sources and loads continues to grow.Therefore,this paper first reviews the classic definition of electrical distance and then demonstrates that the ratio of voltage changes at a pair of nodes in a power system after a small disturbance can be approximately obtained using network topology parameters.Next,following the classic formula for calculating electrical distance,a new method for computing electrical distance based on network topology is presented.Finally,this method is applied to the NE-39 and NE-68 node systems,and the results are compared with those obtained using the classic method in terms of electrical distance and partitioning schemes,validating the effectiveness of the proposed approach.
作者
秦津宇
毛晓明
董哲
房楚宁
QIN Jinyu;MAO Xiaoming;DONG Zhe;FANG Chuning(School of Automation,Guangdong University of Technology,Guangzhou 510006,China)
出处
《电力科学与技术学报》
CAS
CSCD
北大核心
2024年第5期77-82,101,共7页
Journal of Electric Power Science And Technology
基金
广东省自然科学基金(2023A1515010716,2020B1515130001)。
关键词
电气距离
电压控制区域
网络拓扑
electrical distance
voltage controlling area
network topology
作者简介
通信作者:毛晓明(1971-),女,博士,副教授,主要从事电力系统运行分析与控制方面的研究,E‑mail:mxmsunny@163.com。
