摘要
对电力负荷的动态特性对低频振荡的影响进行研究。采用由 1个感应电动机与 1个静态负荷并联而成的综合负荷模型 ,考虑在建模过程中存在负荷参数辨识误差及负荷特性估计的不准确造成的不确定性 ,研究动态负荷所占比例和电动机惯性时间常数对电力系统低频振荡频率和阻尼的影响。通过对一个 4机 2区域系统的典型实例进行研究分析 。
The effect of dynamic characteristics of load model on low frequency oscillations in power systems is presented. The composite load model, which consists of an induction motor and a static load in parallel, is adopted with taking into account uncertainties in the load modeling due to load parameters identification error, load characteristic estimation error and so on. The effects of the proportion of dynamic load and the inertia constant of induction motor on the frequency and damping of low frequency oscillations are studied in detail. A typical example of a two area four machine interconnected power system is given and some valuable conclusions are drawn.
出处
《电力系统自动化》
EI
CSCD
北大核心
2003年第10期11-14,66,共5页
Automation of Electric Power Systems
基金
国家重点基础研究专项经费资助项目 (G1 9980 2 0 30 0 )~~
关键词
电力系统
负荷模型
动态特性
不确定性
低频振荡
电网
small signal stability
composite load model
dynamic load
low frequency oscillation
uncertainty
