Lightning impulse performance of air clearances in HV substations

Author

Grzybowski, S. ; Jenkins, E.B. ; Molen, G.M.

Author_Institution

Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA

fYear

1993

fDate

4-7 Apr 1993

Firstpage

0.666666666666667

Abstract

The results of an experimental investigation of the lightning performance of selected electrode configurations as well as 115 kV and 230 kV substation structures are presented. The evaluation of the lightning performance of the air clearances for structures used in HV substations was based on the measured critical flashover voltage (CFO) values for standard 1.2/50 μs lightning impulses with both positive and negative polarities. The measurements of CFO voltages were performed in the Mississippi State University High Voltage Laboratory. The method used for estimating the air clearance in HV substations is discussed. The results obtained enable the designer to optimize air clearances for a specific application

Keywords

HVDC power transmission; flashover; lightning; power system measurement; voltage measurement; 115 kV; 230 kV; HV substations; Mississippi State University; air clearances; critical flashover voltage; electrode configurations; lightning impulse performance; voltage measurement; Electrodes; Flashover; Impulse testing; Insulation; Laboratories; Lightning; Position measurement; Substations; Surge protection; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '93, Proceedings., IEEE

Conference_Location

Charlotte, NC

Print_ISBN

0-7803-1257-0

Type

conf

DOI

10.1109/SECON.1993.465668

Filename

465668