Experimental evaluation of a UHV tower model for lightning surge analysis

Author

Yamada, T. ; Mochizuki, A. ; Sawada, J. ; Zaima, E. ; Kawamura, T. ; Ametani, A. ; Ishii, M. ; Kato, S.

Author_Institution

Tokyo Electr. Power Co. Inc., Japan

Volume

10

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

393

Lastpage

402

Abstract

An experimental investigation was performed on a UHV tower model for the EMTP multiconductor calculation of lightning overvoltage at substations associated with back-flashover at an adjacent transmission tower. The various lightning surge response characteristics were measured on an actual UHV tower, and parameters of a multistory transmission tower model that can reproduce voltages across the insulator strings, voltages of the crossarms, and voltages of the power lines were determined. A value of 120 Ω was determined as the surge impedance at each section of the multistory tower model, which closely agreed with the tower surge impedance measured for the UHV tower alone

Keywords

electric impedance measurement; flashover; lightning protection; poles and towers; power system analysis computing; power system transients; power transmission lines; surges; transient analysis; 120 ohm; EMTP multiconductor calculation; UHV tower model; adjacent transmission tower; back-flashover; crossarms; insulator strings; lightning overvoltage; lightning surge analysis; lightning surge response characteristics; multistory transmission tower model; power lines; substations; surge impedance; tower surge impedance measurement; voltage reproduction; EMTP; Electromagnetic analysis; Impedance; Insulation; Lightning; Performance analysis; Poles and towers; Substations; Surges; Voltage control;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.368374

Filename

368374