计及感应电动机负荷的静态电压稳定性分析0 N( D# N; l! `/ `* ]
孙华东1, 周孝信1,李若梅28 j. d* y) s+ y. Y
(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) : h5 X% S0 w- W+ A" LSTATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION $ z0 M& L: r8 bMOTOR LOADS/ `5 [ k2 }& X( G( v! V
SUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2 }3 E2 u3 Y8 R8 I2 y4 P/ n! p" W) @5 U(1. Electric Power Research Institute, Haidian District, Beijing 100085, China;2 s9 d5 C1 H5 h+ K# C
2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China) Z4 \0 ?9 {; E Y' q$ A3 E
ABSTRACT: A small disturbance voltage stability analysis, |; K$ P O+ ^) ?' T4 j9 |% Y
mathematical model of single load and infinite bus system is! K% t8 o3 N% v$ o- ~- P2 z4 i9 ^
presented including electromechanical transient model of 0 ?2 ?; c" h# x; k7 ninduction motor. The influence of induction motor parameters 0 b6 s" \3 F4 N2 a9 G4 z* [on eigenvalues on a simple power system is analyzed. The+ O6 _0 i5 B" K1 j
common physical essence of static voltage stability indices- b2 C2 ^9 a6 r# E4 j% H/ o0 _
based on power flow model is illustrated on a simple system. : z: O( k0 ?5 j: EThe accuracy of static voltage stability indices based on power ( S+ w) l9 \' L% ]+ Q5 Uflow model is analyzed by small disturbance voltage stability# C% M8 j% ~0 b/ y# L5 R2 m
analysis and dynamic simulation with different parameters of 3 V6 u' Q! _ f/ u* qinduction motor. The results show that static indices based on& }0 w6 _! [: O5 }9 Z
power flow model is not accurate. The system may lose voltage ) t0 d# h' i: h$ ystability which the static indices regard it is voltage stability. ]! U. l6 E) l3 E0 ~1 g1 D1 SThe small disturbance voltage stability analysis mathematical 7 _( k' S+ C/ p& X) `# kmodel in this paper is simplified analysis. It is expected to be' a. t/ ]. `, L5 b Z+ x
used in the on-line environment in the future