Experimental Study of the Corona Performance of Aged Sand-Cast Substation Connectors

Substation connectors, like many other high-voltage products, are tested once manufactured. However, the corona behavior of aged specimens can differ from that exhibited by newer ones, thus generating detrimental technical and environmental effects. Manufacturers need to know the long-term corona be...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2020-06, Vol.13 (11), p.2785
Main Authors: Riba, Jordi-Roger, Bogarra, Santiago, Gómez-Pau, Álvaro, Moreno-Eguilaz, Manuel
Format: Article
Language:English
Subjects:
Accuracy
ageing
Aging
Alloys
Aluminum
Aluminum alloys
Connectors
corona effect
Corrosion tests
Electric fields
Electrical transmission
Electrodes
Environmental effects
Geometry
high-voltage
Manufacturers
Manufacturing
Manufacturing industry
Noise
Salt
Sand
Sand casting
substation connectors
Substations
Surface roughness
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Substation connectors, like many other high-voltage products, are tested once manufactured. However, the corona behavior of aged specimens can differ from that exhibited by newer ones, thus generating detrimental technical and environmental effects. Manufacturers need to know the long-term corona behavior of substation connectors to offer their customers maximum safety and transparency about such critical products. This paper analyzes the ageing effect on the surface roughness and the visual corona extinction voltage of sand-cast aluminum connectors, which were artificially aged in a salt spray chamber for different periods. The experimental results show an important variability of the surface roughness and corona extinction voltage (CEV) among connectors with the same ageing level due to the sand-casting manufacturing process. The results in this paper also show a slight increase in the surface roughness with the ageing period, although there is not a clear pattern between the applied ageing level and the experimental CEV value. It is concluded that the inherent variability among connectors due to the sand-cast process has more influence than the ageing effect itself.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13112785