基于模态分析的电力系统低频振荡探究  

Study on low-frequency oscillations of the power system based on modal analysis

作　　者：曹静[1] 任杰桢[1] 

机构地区：[1]河海大学能源与电气学院,江苏南京210098

出　　处：《电子测试》2014年第2期6-8,39,共4页Electronic Test

摘　　要：随着电力系统规模的不断扩大,大区之间联网,使得低频振荡的现象时有出现,世界上一些大电网发生过一系列以低频振荡为特征的电网瓦解大事故,造成了巨大的损失。模态分析法,即特征值分析法,是研究电力系统小干扰稳定性问题比较成熟的方法和研究低频振荡强有力的工具。本文分析了模态分析方法在电力系统低频振荡中的应用,用电力系统仿真软件PSDSSAP小干扰稳定性分析程序分析4机2区系统、IEEE 10机39节点系统和IEEE16机68节点系统,分析了系统的低频振荡特性。With the expansion of power system,networking among the region making the low frequency oscillation phenomena appear now and then, in the world some large power grid＇s low frequency oscillations are characterized by a series of grid collapse,causing enormous losses.Modal analysis,namely the eigenvalue analysis,is quite mature method to study the problem of power system small signal stability,and powerful tools to analysis low frequency oscillation.This paper analysis the application of modal analysis method used in low power system low frequency oscillation,with the power system simulation software PSD-SSAP small signal stability analysis program.The two-area 4-generator system,IEEE 10-machine and 39-bus system and IEEE 16-generator 68-bus system is analyzed to analysis the system＇s low-frequency oscillation.

关 键 词：低频振荡 数学模型 模态分析 PSD-SSAP 

分 类 号：TM712[电气工程—电力系统及自动化]