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International Journal of Electrical and Electronic Science

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Influence of Physical Factors on Stability at Computer Simulation of Some Transients in Electric Power Systems

International Journal of Electrical and Electronic Science
Vol.5 , No. 1, Publication Date: Jan. 25, 2018, Page: 1-7

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Authors

[1]	Tahir Lazimov, Electric Supply and Insulation Department, Azerbaijan Technical University, Baku, Azerbaijan.
[2]	Esam Ali Saafan, Electrical Engineering Department, University of El-Mansoura, Mansoura, Egypt.

Abstract

Results of studies of stability at computer simulation switching transients in electric power systems are presented in the paper. There are considered and investigated the key computational features of computer simulation transitional processes at switching-offs power capacitor banks and unloaded transformers (in the main) and power transmission lines (partly) by SF₆ and vacuum circuit-breakers at use different stiff ordinary differential equations’ solvers and algorithms realized them (fast and robust ones). There is shown influence of some physical factors (free frequencies, attenuation and arc resistance, type of circuit-breaker) on the simulation process and solutions’ stability. The simulation process covers wide range of initial step sizes and tolerances. There were given the possible interpretations for the reasons and phenomena being responsible for the worsening of stability at numerical research transients in electric power systems.

Keywords

Computer Simulation, Numerical Stability, Stiff Ordinary, Differential Equations’ Solvers, Transitional Voltages

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