摘要
We investigate numerically the influences of Gaussian white noise on the dynamical behaviors of power systems.The studied model is a three-bus system at some specific parameters,and it demonstrates a stable regime that is far from collapse.It is found that with the increasing noise intensityσ,power systems become unstable and fall into oscillations;asσis further increased,noise-induced voltage collapse in power systems takes place.Our results confirm that the presence of noise has a detrimental effect on power system operation.Furthermore,the possible mechanism behind the action of noise is addressed based on a dynamical approach where the bifurcation of the system is analyzed.Our results may provide useful information for avoiding instability problems in power systems.
作者
WEI Du-Qu
LUO Xiao-Shu
ZHANG Bo
韦笃取;罗晓曙;张波(College of Electronic Engineering,Guangxi Normal University,Guilin 541004;College of Electric Power,South China University of Technology,Guangzhou 510640)
基金
Supported by the of National Natural Science Foundation of China under Grant Nos 50937001(Key Program),10947011,10862001 and 50877028
Construction of Key Laboratories in Universities of Guangxi Province under Grant No 200912.
