The Use of Line Surge Arresters to Provide Safety of Live Working

Article Preview

Abstract:

Live working (LW) is performed to provide high reliability of transmission lines (TL). Only “bare hand” method of LW is used at voltage systems more than 200 kV. Live working (LW) is possible if the minimum approaching distances are in working place. This requirement provides the safety of LW excluding flashover of insulating gaps under the switching overvoltage impact. In some cases it is impossible to provide the required gaps in LW zone. In order to protect it against possible flashover, special arresters were designed. Their effect on overvoltage magnitude was checked in calculations.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

738-742

Citation:

Online since:

December 2014

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] J. Reichman, Safety aspects of live-line work methods, IEEE Trans. on Power Appar. and Syst., 100, 7 (1981), 3478-3485.

DOI: 10.1109/tpas.1981.316691

Google Scholar

[2] IEC Method of Calculation of Minimum Approach Distances for Live Working, IEEE Trans. on Power Delivery, 15, 2 (2000), 873 – 912.

DOI: 10.1109/61.852997

Google Scholar

[3] Electrical Performance of a Portable Protective Gap (PPG) in a Compact 550-kV Tower", EPRI Final Report, TR-103860 (1994).

Google Scholar