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Reference: ISH2015_250

Type:
ISH Collection
Title:

Software development for the evaluation of the lightning performance of overhead distribution lines

 

Abstracts

Reliability of distribution systems is greatly affected by lightning, which is a major cause of power interruptions. The lightning performance of overhead distributions lines can be evaluated by estimating the direct-stroke and induced-voltage flashover rates. A useful application software, called LPDL, for the straightforward evaluation of the lightning performance of overhead distribution lines is introduced, which incorporates several lightning attachment and coupling models available in literature by implementing a generalized methodology. The lightning performance of a typical 10 m overhead distribution line has been evaluated; LPDL results are discussed and compared with those obtained by the relevant IEEE Std. 1410:2010. With the aid of the LPDL software, the effects of line parameters, soil resistivity, shielding of nearby objects, terrain topography, surge arrester characteristics, lightning peak current distribution, lightning attachment and coupling models on the lightning performance of overhead distribution lines can be easily quantified. The developed software runs as a Microsoft Windows application and it is a useful tool for utilities for assessing the lightning performance of distribution lines as well as for the selection of the necessary protection measures so as to achieve an acceptable lightning-caused flashover rate.
 

File Size: 735,9 KB

Year: 2015

 
 
 
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