计及感应电动机负荷的静态电压稳定性分析4 ~: |9 B8 ~9 I9 ?! O+ \* M
孙华东1, 周孝信1,李若梅2 - s/ I1 t( {1 e: L1 ^(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)$ n2 w" \: m# n% O
STATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION9 u( I* ? ~' g; w& k
MOTOR LOADS + _' G& a( N! s0 ^8 W" SSUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2: I5 P5 v; J- U7 a
(1. Electric Power Research Institute, Haidian District, Beijing 100085, China;0 f$ N( ]6 v) G3 W4 T& }
2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China)- _! r5 [( R+ x( x4 J
ABSTRACT: A small disturbance voltage stability analysis' a. Y7 l e& t) a( S
mathematical model of single load and infinite bus system is+ x* o/ b2 h, v$ y1 u8 v. Y# D
presented including electromechanical transient model of 3 {0 X- o3 n* j, Qinduction motor. The influence of induction motor parameters / a- b% }! Y# V0 S9 a) Lon eigenvalues on a simple power system is analyzed. The / J0 E% M! E& u+ P( Ycommon physical essence of static voltage stability indices/ B$ O5 s |# `. C% @; T' b
based on power flow model is illustrated on a simple system. I3 q- A k1 j( Z l$ o! `% W8 WThe accuracy of static voltage stability indices based on power" t- q+ A# |9 a
flow model is analyzed by small disturbance voltage stability/ n. o# a( o8 u, q; M
analysis and dynamic simulation with different parameters of) |9 C) x6 T& F, W- ]
induction motor. The results show that static indices based on ; D3 `4 q7 r, \ J/ ~7 fpower flow model is not accurate. The system may lose voltage) d' l" p6 w5 b$ ]
stability which the static indices regard it is voltage stability. 6 m) e1 L& I, J. Z6 o& WThe small disturbance voltage stability analysis mathematical - R6 H% Z- G$ {model in this paper is simplified analysis. It is expected to be % h+ J5 c% L( \used in the on-line environment in the future