An improved methodology for evaluation of lightning effects on distribution networks

Overhead distribution lines are usually subject to voltage transients during thunderstorms. Lightning flashes, whether direct or indirect, are one of the main causes of power quality disturbances on the electric grid. In this paper, a methodology to establish a correlation between the incidence poin...

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Bibliographic Details
Published in2017 International Symposium on Lightning Protection (XIV SIPDA) pp. 261 - 267
Main Authors Kuster, Kristie K., Santos, Signie L. F., Ravaglio, Marcelo A., Toledo, Luiz Felipe R. B., Piantini, Alexandre, Lazzaretti, Andre E., Mello, Luciana G., Pinto, Cleverson L. S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
Computational modeling
Correlation
Electric fields
field mill
Lightning
lightning location systems
local electric field
Monitoring
power distribution networks
power quality analysis
Sensors
waveform automatic analysis
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DOI10.1109/SIPDA.2017.8116934

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Summary:Overhead distribution lines are usually subject to voltage transients during thunderstorms. Lightning flashes, whether direct or indirect, are one of the main causes of power quality disturbances on the electric grid. In this paper, a methodology to establish a correlation between the incidence point of a lightning flash, the stroke current amplitude and polarity and its effects on the electric distribution network is presented. This methodology has been implemented with the installation of monitoring network and integrated database analysis, and development of a geo-processed application, allowing the utility to make decisions about the monitored distribution system. Finally, a case study showing the impact of lightning events on the distribution grid and on the failure of a distribution transformer is detailed, validating the proposed method.
DOI:10.1109/SIPDA.2017.8116934