基于负荷转移系数并计及容量参数的电网结构脆弱性研究  

Research on the Structural Vulnerability of Power Grid Based on Load Transfer Factor and Capacity Parameter

作　　者：沈天宇[1] 张巍[1] 忻尚芝[1] 章涛[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电力科学与工程》2017年第10期22-25,共4页Electric Power Science and Engineering

摘　　要：电网结构脆弱性评估作为分析电网安全运行的一种行之有效的方法,是目前电力系统研究的热点课题之一。为了能够更好地辨识电网脆弱环节,建立了基于负荷转移系数并计及容量参数的电网结构脆弱性指标。该方法在考虑了"发电机-负荷"节点注入有功功率对线路潮流的影响的基础上,结合了线路传输容量和发电机及负荷容量的影响,所建指标更加符合实际电力系统的潮流运行的特性。通过对IEEE-39母线系统的仿真分析,验证了所建指标的实用性和优越性。As an effective method to evaluate the operation of power grid,the assessment of the structural vulnerability of power grid is one of the hottest topics in power system. In order to identify the fragile links of the power grid better,a grid structure vulnerability index based on load transfer coefficient is established. In view of the influence of the input power of the ＂generator-load＂on the line flow,the method combines the transmission capacity of the line and the influence of the generator and load capacity,so that the physical background is more in line with the power flow of the actual power system. Through the simulation analysis of an IEEE-39 bus system,the practicality and superiority of the constructed index are verified.

关 键 词：结构脆弱性 负荷转移系数 发电机-负荷 脆弱性指标 容量参数 

分 类 号：TM731[电气工程—电力系统及自动化]