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Saeedreza Ostadzadeh

Saeedreza Ostadzadeh

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-9463-5642
Education: PhD.
ScopusId: 15065733900
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
ACCURATE EQUIVALENT CIRCUIT MODEL OF GROUNDING HORIZONTAL ELECTRODES BURIED IN HORIZONTALLY TWO-LAYERED SOIL
Type
Presentation
Keywords
horizontally two-layered soil; horizontal electrode; lightning stroke, vector fitting.
Year
2019
Researchers Sajjad Mehrabi ، Vahid Aghajani ، Saeedreza Ostadzadeh

Abstract

In this paper, we investigate validity of RLC equivalent circuit for transient analysis of grounding horizontal electrodes buried in horizontally two-layered soils. The simulation results show that such an equivalent circuit is violated at high frequencies created by lightning strokes. Hence, in this paper, a new equivalent circuit is proposed. In the new circuit model, vector fitting method (VF) is combined with finite element method (FEM) so that a wide-band equivalent circuit is obtained. Such a model is useful for lightning performance of power systems.