Short interruptions caused by lightning in overhead line medium voltage networks

Author

Parviainen, M. ; Heine, P. ; Omidiora, M.A. ; Lehtonen, M. ; Niskanen, J. ; Oikarinen, A.

Author_Institution

Dept. of Electr. Eng., Helsinki Univ. of Technol., Espoo

fYear

2008

fDate

27-29 Aug. 2008

Firstpage

145

Lastpage

150

Abstract

Lightning strokes represent a considerable cause of short interruptions in overhead line medium voltage networks. The overvoltages caused by lightning can not be avoided but their influence can be limited by appropriate overvoltage protection. This paper presents the results of theoretical studies about the number of short interruptions caused by lightning in various environmental circumstances. The results will be compared to the fault statistics collected from Kainuun Energia. In the calculations, the environmental conditions, ground flash densities and various overvoltage protection types of power distribution transformers are taken into account. At the end, further research is discussed.

Keywords

lightning protection; overvoltage protection; power distribution protection; power overhead lines; power transformer protection; environmental conditions; ground flash densities; lightning; overhead line medium voltage networks; overvoltage protection; power distribution transformers; short interruptions; Energy measurement; Equations; Frequency; Lightning; Medium voltage; Power measurement; Power quality; Statistics; Substations; Surge protection;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Quality and Supply Reliability Conference, 2008. PQ 2008

Conference_Location

Parnu

Print_ISBN

978-1-4244-2500-6

Electronic_ISBN

978-1-4244-2501-3

Type

conf

DOI

10.1109/PQ.2008.4653751

Filename

4653751