计及感应电动机负荷的静态电压稳定性分析( j8 r2 J7 e1 l8 G; m7 H
孙华东1, 周孝信1,李若梅2 ' ?" V% K Z' q; d2 E2 a0 N(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)8 E; \. A8 l9 |# ^
STATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION ' q, l1 x0 \9 W+ O1 X$ lMOTOR LOADS - D1 o# P |5 y v! a2 aSUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2 P9 U# r$ ~% I, Y$ M2 r(1. Electric Power Research Institute, Haidian District, Beijing 100085, China; 4 g# ?7 A7 z( a D7 l7 [8 E6 [2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China), m$ l3 h/ ]+ J$ F5 X
ABSTRACT: A small disturbance voltage stability analysis 4 p2 ~3 J( t3 y! k5 Pmathematical model of single load and infinite bus system is ( r3 X4 p1 v$ P0 t) e; C2 Mpresented including electromechanical transient model of, s* d# Y4 }. t3 O: ~
induction motor. The influence of induction motor parameters " \: p$ Z& x. _- h' Uon eigenvalues on a simple power system is analyzed. The2 {0 ^( N; Z( J h1 j
common physical essence of static voltage stability indices * s& s1 g8 g8 L! v' ]7 Z: R2 f: wbased on power flow model is illustrated on a simple system. 2 ]" H- X% Q7 c. X( v) f1 _The accuracy of static voltage stability indices based on power 3 Y$ ~) k$ N* D4 g oflow model is analyzed by small disturbance voltage stability# x6 x% J. h- v1 l& s* N0 f: Q
analysis and dynamic simulation with different parameters of 7 H: ^5 B! B v) f" E' v; {4 a$ g; ~5 ainduction motor. The results show that static indices based on & v* ]. W/ b' f' L2 M [power flow model is not accurate. The system may lose voltage $ n& W# ~5 @5 D: _9 Z ?stability which the static indices regard it is voltage stability.7 K; T' x1 X9 J2 c; \( S
The small disturbance voltage stability analysis mathematical 0 }4 C4 G2 [& H) Q0 _1 s2 smodel in this paper is simplified analysis. It is expected to be# a+ Y0 h, @- _+ W6 S
used in the on-line environment in the future