DocumentCode :
551439
Title :
Experimental performance of induced voltage on power line due to lightning discharge to nearby tree
Author :
Omidiora, Michael A. ; Lehtonen, Matti
Author_Institution :
Electr. Eng. Dept., Aalto Univ., Aalto, Finland
fYear :
2010
fDate :
20-22 Sept. 2010
Firstpage :
1
Lastpage :
5
Abstract :
With continually increasing emphasis on the reliability of power systems, further understanding of the main causes of lightning faults in medium voltage lines is required for effective protection. Lightning-induced voltage on power distribution lines or telecommunication lines has been a subject that has received critical attention in the literature for years. However, very few investigations have been carried out on the influence of very close and tall structures, such as trees, buildings and other high structures on the lightning performance of power distribution lines. Recent measurements have revealed that a tree can intersect a lightning stroke in the vicinity of a power line, but not in all situations. In addition, induced voltage exists even when the power line is perfectly shielded by the nearby tree. This paper presents the results of experimental findings on the induced voltages existing between a lightning-struck tree and a power distribution line. The effects of; tree-to-line clearance, change in lightning time characteristics and polarities on the induced voltages are investigated.
Keywords :
lightning protection; overvoltage protection; power distribution lines; lightning discharge; lightning faults; lightning performance; lightning stroke; lightning time characteristics; lightning-induced voltage; lightning-struck tree; medium voltage lines; power distribution lines; power line; power system reliability; telecommunication lines; tree-to-line clearance; Conductors; Electrostatics; Lightning; Power distribution lines; Surges; Vegetation; Voltage measurement; Induced voltage; electrostatic field; lightning voltage; power line; tree;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Modern Electric Power Systems (MEPS), 2010 Proceedings of the International Symposium
Conference_Location :
Wroclaw
Print_ISBN :
978-83-921315-7-1
Type :
conf
Filename :
6007228
Link To Document :
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