The paper discusses the problems connected to the determination of the value of the test voltage for Lightning Impulses, in presence of oscillations. The K-factor approach being introduced in the revision of IEC 60060-1 appears certainly more reasonable when compared with the present situation which considers a sharp transition at 500 kHz. However the complexity of the discharge phenomena does not seem to be fully considered and therefore the conservative approach which tends to limit the permitted amplitude of the oscillations to 5% should be preferred; the proposal to extend the maximum allowable oscillation amplitude up to 10 or 15 % could pose problems, at least in air, due to the physics of the phenomena being involved.

Application of the K-Factor approach to laboratory tests

GOBBO, RENATO;PESAVENTO, GIANCARLO
2009

Abstract

The paper discusses the problems connected to the determination of the value of the test voltage for Lightning Impulses, in presence of oscillations. The K-factor approach being introduced in the revision of IEC 60060-1 appears certainly more reasonable when compared with the present situation which considers a sharp transition at 500 kHz. However the complexity of the discharge phenomena does not seem to be fully considered and therefore the conservative approach which tends to limit the permitted amplitude of the oscillations to 5% should be preferred; the proposal to extend the maximum allowable oscillation amplitude up to 10 or 15 % could pose problems, at least in air, due to the physics of the phenomena being involved.
PROCEEDINGS OF THE 16TH INTERNATIONAL SYMPOSIUM OF HIGH VOLTAGE ENGINEERING
9780620445856
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/2437551
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