Device for overvoltage control in live line working

Author

Udod, E. ; Molchanov, V. ; Taloverya, V. ; Brjesitsky, B.A. ; Gela, G.

Author_Institution

Ukraine Power Res. Inst., Ukraine

fYear

1998

fDate

26-30 April 1998

Firstpage

246

Lastpage

252

Abstract

A new device for control of overvoltages during live work has been developed in Ukraine. The device provides improved limitation of overvoltages at the worksite in comparison with the traditional portable protective gap that has been in use for several decades. The new device consist of a rod air gap connected in series with a highly nonlinear ZnO resistor. The sparkover voltage of the device is 1.5 to 1.7 times the peak phase-to-earth maximum nominal system voltage. The new device has been tested extensively in the laboratory and is now undergoing in-service validation tests.

Keywords

air gaps; maintenance engineering; overvoltage protection; power overhead lines; resistors; safety; voltage control; Ukraine; ZnO; highly nonlinear ZnO resistor; in-service validation tests; live line working; overvoltage control; overvoltages limitation; peak phase-to-earth maximum nominal system voltage; rod air gap; safety; sparkover voltage; Air gaps; Dielectrics and electrical insulation; Poles and towers; Protection; Resistors; Samarium; Testing; USA Councils; Voltage control; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission & Distribution Construction, Operation & Live-Line Maintenance Proceedings, 1998. ESMO '98. 1998 IEEE 8th International Conference on

Conference_Location

Orlando, FL, USA

Print_ISBN

0-7803-4883-4

Type

conf

DOI

10.1109/TDCLLM.1998.668382

Filename

668382