Voltage grading design of UHV surge arresters using 3D transient capacitive-resistive field simulations

Author

Sjöstedt, Hans ; Stenström, Lennart ; Pusch, David ; Ostrowski, Jörg

Author_Institution

Surge Arresters, Power Products/ABB AB, Ludvika, Sweden

fYear

2010

fDate

11-14 Oct. 2010

Firstpage

32

Lastpage

35

Abstract

Numerical analysis of UHV gapless metal-oxide surge arresters have been performed utilizing capacitive-resistive coupling transient electric field simulations. The calculations are performed in 3D and for 3-phase installations. Two types of voltage grading methods for surge arresters have been studied, with grading rings and with external grading capacitors. The results show that important advantages like a shorter and lighter arrester with improved protection performance is possible to obtain using external grading capacitors instead of grading rings.

Keywords

arresters; capacitors; electric fields; numerical analysis; 3-phase installation; 3D capacitive resistive coupling transient electric field simulation; UHV gapless metal oxide surge arresters; grading capacitors; grading rings; lighter arrester; numerical analysis; voltage grading design; Arresters; Capacitors; Computational modeling; Electric fields; Solid modeling; Surges;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application (ICHVE), 2010 International Conference on

Conference_Location

New Orleans, LA

Print_ISBN

978-1-4244-8283-2

Type

conf

DOI

10.1109/ICHVE.2010.5640871

Filename

5640871