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Mitigation of transient overvoltages generated due to switching operations and lightning in gas-insulated substations (GIS) without extra limiter

journal contribution
posted on 2023-05-18, 03:03 authored by Tavakoli, A, Gholami, A
Gas-insulated substations (GIS) have different specifications in proportion to air-insulated substations. Transformer failures related to lightning and switching are often reported in the gas insulated substation (GIS). This problem is the voltage magnifications due to reflections of switching and lightning surges at various junctions within the GIS. Thereby overvoltages in GIS are more important than air-insulated substation. There are methods to suppress the stresses created by lightning and switching in the GIS. However, these methods are suitable before installing the substation and during the substation design period. This paper presents feasible methods for mitigation of the overvoltage magnitude. The advantages of the proposed methods are their simplicity and low cost for implantation along with producing minimal changes in the installed GIS.

History

Publication title

Iranian Journal of Electrical and Electronic Engineering

Volume

7

Pagination

190-196

ISSN

1735-2827

Department/School

School of Engineering

Publisher

Iran University of Science and Technology

Place of publication

Iran

Rights statement

Copyright 2011 Iranian Journal of Electrical and Electronic Engineering

Repository Status

  • Restricted

Socio-economic Objectives

Mining and extraction of energy resources not elsewhere classified