Evaluation of safety grounding practices for maintenance work on de-energized transmission lines

Author

Atwater, Philip L. ; DeHaan, James M. ; Rom, Alvin

Author_Institution

Bur. of Reclamation, Denver, CO, USA

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

189

Abstract

The effectiveness of different personal protective safety grounding configurations for transmission lines was investigated by the Puerto Rico Electric Power Authority with assistance from the US Bureau of Reclamation. Seven different safety-grounding configurations on a 115-kV line at an H-frame wood pole structure were tested by energizing the line and initiating high fault currents in the safety ground cables. The test methods are presented and the grounding configurations rated for effectiveness in controlling worker exposure voltages. The test results have greatly contributed to alerting supervisors, line and ground crew personnel of the electric shock danger associated with certain grounding schemes and are being used to evaluate safety grounding practices for maintenance work on deenergized transmission lines

Keywords

earthing; electric shocks; health hazards; maintenance engineering; power overhead lines; power transmission faults; safety; 115 kV; H-frame wood pole structure; Puerto Rico; deenergized transmission lines; electric shock danger; fault currents; grounding configurations; maintenance work; personal protective safety grounding configurations; safety ground cables; test methods; transmission lines; Cables; Electrical safety; Fault currents; Grounding; Personnel; Poles and towers; Power transmission lines; Protection; Testing; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exposition, 2001 IEEE/PES

Print_ISBN

0-7803-7285-9

Type

conf

DOI

10.1109/TDC.2001.971232

Filename

971232