计及感应电动机负荷的静态电压稳定性分析 / q3 w( H% w e孙华东1, 周孝信1,李若梅2# V+ c7 t6 y+ P* q
(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)4 e; ?! O' v+ I( C) u6 l* h
STATIC VOLTAGE STABILITY ANALYSIS CONSIDERING INDUCTION9 h) ^; b+ t$ x+ ^( b
MOTOR LOADS: [+ V% _2 |" x% ?
SUN Hua-dong1, ZHOU Xiao-xin1, LI Ruo-mei2 B% M; X! V2 H" ^" j
(1. Electric Power Research Institute, Haidian District, Beijing 100085, China;# y+ b3 h* t ^# h+ s! @7 o
2. Chinese Society of Electrical Engineering, Xuanwu District, Beijing 100761, China) 3 K5 r' y9 s, v8 c: uABSTRACT: A small disturbance voltage stability analysis9 S" p/ B7 ]8 [) ~
mathematical model of single load and infinite bus system is4 g5 E! w/ ~6 [- q. ^: L6 K
presented including electromechanical transient model of+ C5 g1 ], l! }) s6 ?" G8 ]6 x
induction motor. The influence of induction motor parameters1 ?$ T% P, z' u# }/ Q( |2 }3 N
on eigenvalues on a simple power system is analyzed. The. N) g! ?# D* n% G" C/ D; b
common physical essence of static voltage stability indices ; L+ |; t w" E% Gbased on power flow model is illustrated on a simple system.( B2 _% O& X$ d/ V- T6 r- T
The accuracy of static voltage stability indices based on power 5 ~3 o- X" h, h/ vflow model is analyzed by small disturbance voltage stability 9 B& p" X9 g- p" Q4 `' vanalysis and dynamic simulation with different parameters of % @3 r s& |7 X+ x" |. [; j, jinduction motor. The results show that static indices based on 6 D; s( t4 ~1 o7 ypower flow model is not accurate. The system may lose voltage V, D! n; i4 S' n c+ Z& q
stability which the static indices regard it is voltage stability.4 ?8 l7 L+ R) a- r$ K) V6 u
The small disturbance voltage stability analysis mathematical 6 i- E) P2 Q: @model in this paper is simplified analysis. It is expected to be W3 z- _8 E2 N/ R& X& M9 Aused in the on-line environment in the future