An Approach to the Lightning Overvoltage Protection of Medium Voltage Lines in Severe Lightning Areas

Journal Article · Thu May 08 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2937601· OSTI ID:21143289

Omidiora, M A; Lehtonen, M ^[1]

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1. Power Systems and High Voltage Engineering Laboratory, Electrical Engineering Department, Helsinki University of Technology, Otaniemi, Espoo (Finland)

This paper deals with the effect of shield wires on lightning overvoltage reduction and the energy relief of MOV (Metal Oxide Varistor) arresters from direct strokes to distribution lines. The subject of discussion is the enhancement of lightning protection in Finnish distribution networks where lightning is most severe. The true index of lightning severity in these areas is based on the ground flash densities and return stroke data collected from the Finnish meteorological institute. The presented test case is the IEEE 34-node test feeder injected with multiple lightning strokes and simulated with the Alternative Transients Program/Electromagnetic Transients program (ATP/EMTP). The response of the distribution line to lightning strokes was modeled with three different cases: no protection, protection with surge arresters and protection with a combination of shield wire and arresters. Simulations were made to compare the resulting overvoltages on the line for all the analyzed cases.

• OSTI ID: 21143289
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1007; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
ELECTRIC POTENTIAL
LIGHTNING
OVERVOLTAGE
POWER TRANSMISSION LINES
SAFETY
SEMICONDUCTOR RESISTORS
SHIELDS
TRANSIENTS
WIRES