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Corresponding Author

Mansy, Ibraheem

Subject Area

Electrical Engineering

Article Type

Original Study

Abstract

The equation of variables (EV) is an approximation of a mathematical method. It is used to linearize nonlinear equations. It is simple and accurate method and it offers quick solutions. This paper explains this equation and uses it to determine the characteristics of electromechanical transient process (EMTP) in electrical power systems. The characteristics of EMTP are studied in this paper in two cases: first, simple disturbance ( as a result of parameter variation ) and second, large disturbance (as a result of occurring single S.C.) in this paper also, a comparison between the proposed method and another three methods is presented. One of these methods has exact solution and the others have an approximate one

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