Original scientific paper
Numerical Analysis of Power System Electromechanical and Electromagnetic Transients based on the Finite Element Technique
I. Jurić-Grčić
orcid.org/0000-0002-6528-7415
; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture Croatia
M. Kurtović
; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture Croatia
R. Lucić
; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture Croatia
Abstract
This paper presents a novel technique for numerical analysis of electromagnetic
transients and electromechanical oscillations in a power system. The proposed
method is based on the finite element method (FEM). The finite element technique so
far used for numerical analysis of continuum field problems here has been adopted to
analyse electromagnetic and electromechanical transients in a power system.
According to the finite element technique in the field problem, where the region of
interest is divided into finite elements, in the proposed method power system is also
divided into electric power system (finite) elements. Each finite element (generator,
transformer, transmission line, load etc.) is characterized by a system of governing
differential equations. Using generalized trapezoidal rule, also known as thetamethod
for time integration, the system of differential equations of each electric
power system (finite) element can be transformed to the system of algebraic
equations for every time step. Once when a system of algebraic equations of each
electric power system element is obtained, assembly procedure has to be done. The
main contribution of the proposed approach is in an assembly procedure. With the
proposed approach, in case of any disturbances in power system or in a part of
power system, nodal voltage and branch currents will be obtained, as well as all
other interesting variables. The proposed method will be tested on the example of the
single-phase short circuit in the power system.
Keywords
Electromagnetic transients; Electromechanical oscillations; Power system; Finite Element Technique
Hrčak ID:
198385
URI
Publication date:
19.6.2017.
Visits: 755 *