电力系统自动化2011，Vol.35Issue(21)：6-11,6.
密集型固有振荡模式电力系统的模态分析
Modal Analysis of Electric Power System with Close Oscillation Modes
摘要
Abstract
The frequencies of natural oscillation mode in large power system are very close.When the system parameters experience minor changes,system has the potential to instability of close modes.A perturbation technique for complex modes is used to make modal analysis of the close modes shapes in a power system.It shows that eigenvalues are not sensitive to the perturbation while the left eigenvectors and right eigenvectors of close modes change a lot after the perturbation of system parameters.This will directly affect the controllability and observability of state variables on the oscillation modes.The 10-machine New England and NPCC 48-machine test systems are employed to verify the conclusion. This work is supported by Fundamental Research Funds for the Central Universities（No.09MG07） and Natural Science Foundation of Hebei Province（No.E2010001693,No.E2011502014）.关键词
动态稳定/低频振荡/密集振荡模式/复模态摄动理论/模态分析/电力系统Key words
dynamic stability/low frequency oscillation/close oscillation mode/complex modal perturbation theory/modal analysis/power system分类
信息技术与安全科学引用本文复制引用
赵书强,陈慷,马燕峰,胡永强..密集型固有振荡模式电力系统的模态分析[J].电力系统自动化,2011,35(21):6-11,6.基金项目
中央高校基本科研业务费专项资金资助项目 （）
河北省自然科学基金资助项目 （）
