Abstract: Categorizes three direct-axis and four quadrature-axis models, along with the basic transient9 w! K! W2 E/ Q" f: }
reactance model. Discusses some of the assumptions made in using various models and presents the8 h) a" p4 `4 Y
fundamental equations and concepts involved in generator/system interfacing. Covers, generally, the various ' B( b2 u. _0 aattributes of power system stability, recognizing two basic approaches. The first is categorized under large $ \) ^* I, i Q: B, D3 r Y, Cdisturbance nonlinear analysis; the second approach considers small disturbances, where the corresponding' o& V2 ?( j* }3 C1 c) n" e8 k
dynamic equations are linearized. Applications of a range of generator models are discussed and treated. The # y ~% Y: g2 l' X7 qmanner in which generator saturation is treated in stability studies, both in the initialization process as well as" C/ u! u+ k! p$ I% `; A7 b% e$ t
during large or small disturbance stability analysis procedures is addressed. Saturation functions that are: s# q' h& \" v
derived, whether from test data or by the methods, of finite elements are developed. Different saturation ' ]4 d5 l, V: U3 R1 ^# Valgorithms for calculating values of excitation and internal power angle depending upon generator terminal . \$ U! O& ~+ M D) Q# f) Aconditions are compared. The question of parameter determination is covered. Two approaches in accounting 8 L# E7 R- a: y- Z+ S8 cfor generator field and excitation system base quantities are identified. Conversion factors are given for6 @- ]7 D1 A: H% w
transferring field parameters from one base to another for correct generator/excitation system interface : g5 j; l7 \9 C1 A/ Xmodeling, Suggestions for modeling of negative field currents and other field circuit discontinuities are: W* o3 h) J6 W$ z/ B. _
included.% x2 S3 |0 c& V2 `
Keywords: modeling practices, saturation practices, stability data determination and application, synchronous & G1 Y6 e" s& l6 C: f* i% D7 bgenerator stability models
IEEE Std 1110-2002 ) ?6 b" }- F i. S- [
IEEE Guide for Synchronous Generator Modeling Practices and Applications in Power System Stability Analyses" a1 m" @( \. i& A8 t
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