Analysis of frequency characteristics of electrical arcs on the insulating sheath of the ADSS fiber optic cables

The insulating outer-sheath of ADSS (All dielectric self supporting) cables used on high voltage transmission lines are often subjected to various environmental effects. The ageing process of cable sheath can be investigated by using the dry-band arcing test method under laboratory conditions. Dry-b...

Full description

Saved in:
Bibliographic Details
Published in:Elektrik : Turkish journal of electrical engineering & computer sciences 2011, Vol.19 (1), p.109-118
Main Authors: GÜNES, İbrahim, UZUNOĞLU, Cengiz Polat, UĞUR, Mukden
Format: Article
Language:English
Subjects:
arc discharge
Ark boşalması
Communication Engineering
Deneysel çalışma
Electricity, Magnetism and Optics
Elektrik, Manyetizma ve Optik
Experimental study
Fiber optic cable
Fiber optik kablo
Frekans analizi
frequency analysis
İletişim Mühendisliği
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The insulating outer-sheath of ADSS (All dielectric self supporting) cables used on high voltage transmission lines are often subjected to various environmental effects. The ageing process of cable sheath can be investigated by using the dry-band arcing test method under laboratory conditions. Dry-band arcing is the most common technique to determine the ageing period of insulating materials. Environmental effects such as rain, humidity, dew and ice produce various amounts of wet regions on the cable surface. Electrical arcs and hence degradations are occurred on the cable surface due to the enhanced electrical field with formation of wet regions. In this study, the ageing process of ADSS cables was investigated by using the dry band arcing test method (IEEE 1222 Electrical surface degradation). Rainfall intensity determines the wet regions on the cable surface which affects the ageing process of the cable. During tests electrical arc signals were investigated by analyzing wet region scope versus amplitude and frequency spectrum variations via the FFT method. It is possible to claim that the proposed FFT analysis clearly identifies the ageing period of the ADSS cable which was subjected to different rainfall intensities by monitoring frequency spectrum of the arc signals.
ISSN:1300-0632
DOI:10.3906/elk-1001-384