电力系统及其自动化学报2017，Vol.29Issue(9)：107-113,7.DOI:10.3969/j.issn.1003-8930.2017.09.018
基于改进节点电气介数的电网关键节点辨识
Identification of Key Nodes in Power Grid Based on Improved Node Electric Betweenness
徐岩 1郅静1
作者信息
- 1. 华北电力大学新能源国家重点实验室,保定 071000
- 折叠
摘要
Abstract
To improve the operation safety level of power system,an identification method of key nodes in power grid is put forward based on improved node electric betweenness. On the basis of the power sensitivity matrix between line pow?er variable and nodal injection power variable,the improved node electric betweenness is calculated to identify key nodes according to the different types of nodes. Considering the load loss caused by node removal and the weighted pow?er distribution entropy with node injection power disturbance,node importance index is defined to measure the node function during the load power supply and power transmission,which is further used to verify the identification results of key nodes. With simple calculation,the improved node electric betweenness overcomes the shortcomings of the tradi?tional indexes which assume that the power goes along the shortest path between nodes,and it also considers the direc?tion of power flow. The simulation in IEEE 39-node system shows that the improved node electric betweenness can effec?tively identify the key nodes during the load power supply and power transmission.关键词
电力系统/关键节点/改进节点电气介数/负荷损失/加权潮流分布熵Key words
power system/key node/improved node electric betweenness/load loss/weighted power distribution en⁃tropy分类
信息技术与安全科学引用本文复制引用
徐岩,郅静..基于改进节点电气介数的电网关键节点辨识[J].电力系统及其自动化学报,2017,29(9):107-113,7.
