计及感应电动机负荷的静态电压稳定性分析" I- f$ H$ w- r: L( o7 P) j% g1 t
孙华东1, 周孝信1,李若梅27 O; E! Z8 V! _+ e. J( R6 j
(1. 中国电力科学研究院,北京市 海淀区100085; 2. 中国电机工程学会, 北京市 宣武区100761)* K5 [; n" U. t
STATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION; A# k3 ]! L; L" A
MOTOR LOADS. A4 Q; f9 ?+ K& S, a7 `: x( w( f
SUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2 4 d0 C& W1 N" ](1. Electric Power Research Institute, Haidian District, Beijing 100085, China; 7 V& M7 _' A% V/ I. a9 ?2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China) - F8 b: y% z8 P. V8 OABSTRACT: A small disturbance voltage stability analysis( b1 i8 j) M+ p3 a6 p9 {( H
mathematical model of single load and infinite bus system is0 K" g' W; Q* E
presented including electromechanical transient model of # S, H+ a0 |5 x w! G, [- v# @, r, Vinduction motor. The influence of induction motor parameters7 n; u4 m4 |6 i: t3 @" O
on eigenvalues on a simple power system is analyzed. The2 ~3 T. n9 [3 k( K
common physical essence of static voltage stability indices+ ? U( F; F2 \/ r e) o
based on power flow model is illustrated on a simple system. ]; a9 u4 {! J* e" L9 u
The accuracy of static voltage stability indices based on power2 h% V+ d& }" O7 j( X, W
flow model is analyzed by small disturbance voltage stability 6 n, k/ M7 G" A7 ]9 qanalysis and dynamic simulation with different parameters of$ ~4 q3 g6 Y5 ?( a8 z
induction motor. The results show that static indices based on2 C2 B, k" h2 e* A0 U% F; `
power flow model is not accurate. The system may lose voltage4 @! @& o! Y- Y# Y
stability which the static indices regard it is voltage stability.3 q& t c# Y0 _8 M2 V& o h3 @
The small disturbance voltage stability analysis mathematical0 Z! c, C1 `2 A: `2 P/ o" ^3 H
model in this paper is simplified analysis. It is expected to be ! F2 w: ~, ], U0 P4 ]used in the on-line environment in the future