计及感应电动机负荷的静态电压稳定性分析 0 p& X) g" }% e, n- Y, |孙华东1, 周孝信1,李若梅2 ' t+ y) O1 j% y: P m(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)% O! W, |; f. G! S1 L# c% E. m
STATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION " d) Z- I9 r4 J% x0 IMOTOR LOADS $ B3 K) L0 H% u6 {6 g# {SUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2; F4 P- L" _( c: t
(1. Electric Power Research Institute, Haidian District, Beijing 100085, China;! C' ~. n* t5 y: p9 c3 r
2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China)0 k3 X# r' ]- I: T# H) J& x7 j0 P
ABSTRACT: A small disturbance voltage stability analysis6 l0 i$ i) a1 @+ `& G- l6 D& F
mathematical model of single load and infinite bus system is ; [$ h. n2 \. J) m* K% Wpresented including electromechanical transient model of2 S$ n) H. `( j, L! F' O' u) i( Q! n
induction motor. The influence of induction motor parameters " D1 Q$ ]0 D4 @( qon eigenvalues on a simple power system is analyzed. The ; A1 B! d$ ^/ C1 K1 j' U! [common physical essence of static voltage stability indices # E9 I' h: o! d: y% K% vbased on power flow model is illustrated on a simple system. * E d' _: B% W0 b; p- i/ LThe accuracy of static voltage stability indices based on power* g; F; f5 a( |
flow model is analyzed by small disturbance voltage stability D& i9 h$ J# a% z! N* Zanalysis and dynamic simulation with different parameters of, Y% L8 [/ o& H6 v1 Z/ h
induction motor. The results show that static indices based on/ z, g) G0 w9 r7 W/ w1 B# k# V
power flow model is not accurate. The system may lose voltage , T9 r, o' V; ]* Z; x! Vstability which the static indices regard it is voltage stability.! n6 Z$ t4 L7 J2 i
The small disturbance voltage stability analysis mathematical 6 h( u3 r4 }' D) hmodel in this paper is simplified analysis. It is expected to be * l6 R9 n# L# R& p- i mused in the on-line environment in the future