NDLI: A decoupled time-domain Simulation method via Invariant subspace partition for power system analysis

Content Provider	IEEE Xplore Digital Library
Author	Yang, D. Ajjarapu, V.
Copyright Year	1969
Abstract	A decoupled method is proposed to deal with time-domain simulation for power system dynamic analysis. Traditionally, there are two main categories of numerical integration methods: explicit methods and implicit methods. The implicit methods are numerically stable but require more computational time to solve the nonlinear equations, while explicit methods are relatively efficient but may cause a numerical stability problem. This paper proposes a new hybrid method to take advantage of both explicit and implicit methods based on the invariant subspace partition. The original power system equations are decoupled into two parts that correspond to the stiff and nonstiff subspaces. For the stiff invariant subspace, the implicit method is applied to achieve numerical stability, and the explicit method is employed to handle nonstiff invariant subspace for the computational efficiency. As a result, the new hybrid method is both numerically stable and efficient. The approach is demonstrated through New England 39-bus and IEEE 118-bus systems.
Sponsorship	IEEE Power Engineering Society
Starting Page	11
Ending Page	18
Page Count	8
File Size	380352
File Format	PDF
ISSN	08858950
Volume Number	21
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system simulation Time domain analysis Analytical models Power system analysis computing Computational modeling Power system dynamics Nonlinear equations Numerical stability Hybrid power systems Power system stability time-domain simulation A-stability decoupled method differential and algebraic equations (DAE) dynamical simulation explicit methods implicit methods invariant subspace partition power systems stiff systems
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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