IEEE Guide for Synchronous Generator
STANDARDS
Modeling Practices and Parameter
Verification with Applications in Power
System Stability Analyses
IEEE Power and Energy Society
Developed by the
Electric Machinery Committee
IEEE Std 1110™-2019
(Revision of IEEE Std 1110-2002)
IEEE Std 1110™-2019
(Revision of IEEE Std 1110-2002)
IEEE Guide for Synchronous Generator
Modeling Practices and Parameter
Verification with Applications in Power
System Stability Analyses
Developed by the
Electric Machinery Committee
of the
IEEE Power and Energy Society
Approved 7 November 2019
IEEE SA Standards Board
Abstract: Categorized in this guide are three direct-axis and four quadrature-axis models, along
with the basic transient reactance model. Also discussed are some of the assumptions made in
using various models. The fundamental equations and concepts involved in generator/system
interfacing are presented. Covered, generally, are the various attributes of power system stability,
recognizing two basic approaches. The first is categorized under large disturbance nonlinear
analysis; the second approach considers small disturbances, where the corresponding dynamic
equations are linearized. Applications of a range of generator models are discussed and treated.
The manner in which generator saturation is treated in stability studies, both in the initialization
process as well as during large or small disturbance stability analysis procedures is addressed.
Saturation functions that are derived, whether from test data or by the methods, of finite elements
are developed. Different saturation algorithms for calculating values of excitation and internal
power angle depending upon generator terminal conditions are compared. The question of
parameter determination or verification is covered. Two approaches in accounting for generator
field and excitation system base quantities are identified. Conversion factors are given for
transferring field parameters from one base to another for correct generator/excitation system
interface modeling, Suggestions for modeling of negative field currents and other field circuit
discontinuities are included.
Keywords: IEEE 1110™, modeling practices, saturation practices, stability data determination
and application, synchronous generator stability models
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PDF: ISBN 978-1-5044-6290-7 STD23968
Print: ISBN 978-1-5044-6291-4 STDPD23968
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