Observation and analysis of lightning surges at substations connected with UHV designed transmission lines

Author

Yamada, Takeshi ; Narita, Tomomi ; Shioda, Toru ; Okabe, Shigemitsu ; Zaima, Eiichi

Author_Institution

Tokyo Electr. Power Co. Inc., Yokohama, Japan

Volume

15

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

675

Lastpage

683

Abstract

On UHV-class transmission lines with sections of 500 kV class insulation, lightning observations have been made to study the generation and the propagation of overvoltage into substations. Voltages and currents were recorded at substations and at junction-tower footings during three flashovers on the UHV system. These observations were then matched to EMTP calculations by adjusting the average soil resistivity and the average conductor height in the propagation model. It is also found that the attenuation due to corona of voltages was small because it is expected to be minimal for 8-conductor bundles

Keywords

EMTP; electrical resistivity; flashover; lightning; overvoltage; poles and towers; power overhead lines; soil; substations; surges; 500 kV; EMTP calculations; UHV transmission lines; conductor height; corona; flashovers; insulation; junction-tower footings; lightning surges analysis; lightning surges observation; overvoltage generation; overvoltage propagation; shielding failure; soil resistivity; substations; voltages attenuation; EMTP; Flashover; Insulation; Lightning; Optical propagation; Soil; Substations; Surges; Transmission lines; Voltage control;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.853004

Filename

853004