In the power system stability problems the primary actors in the mathematical system model are the differential equations defining the dynamic state variables of generation and load. These differential equations are coupled together by load flow equations. Mathematically the load flow equations are nonlinear algebraic equations. These differential equations and nonlinear algebraic equations form the mathematical differential algebraic equations (DAE) model for the power system. The fuzzy set theory is commonly used in analysis of dynamical nonlinear systems. In this paper, we build a set of local dynamical fuzzy logic models for the differential equations, thus transforming the differential equations into nonlinear algebraic equations, the DAE into nonlinear algebraic equations. We try to simulate the system by solving the nonlinear algebraic equations rather than by solving the DAE model. We also compare the application of two types of dynamical fuzzy models: the discrete-time model and discrete-event model in this approach. First we explain the approach by a small DAE example, and then we apply it to a 10-bus power system.
J. Guo et al., "Small Local Dynamic Fuzzy Logical Models for Large-Scale Power Systems," Proceedings of the IEEE Power Engineering Society General Meeting (2004, Denver, CO), vol. 1, pp. 309-314, Institute of Electrical and Electronics Engineers (IEEE), Jan 2005.
The definitive version is available at http://dx.doi.org/10.1109/PES.2004.1372804
2004 IEEE Power Engineering Society General Meeting (2004: Jun. 6-10, Denver, CO)
Electrical and Computer Engineering
National Science Foundation (U.S.)
Keywords and Phrases
Fuzzy Set Theory; Nonlinear Dynamical Systems; Nonlinear Equations; Power System Interconnection; Power System Stability; Differential-algebraic equations; Fuzzy logic; Mathematical analysis
International Standard Book Number (ISBN)
Article - Conference proceedings
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