Cable Overheating in an Industrial Substation Feeder Due to Untransposed Power Cables - Measurement and Simulation

Cable Overheating in an Industrial Substation Feeder Due to Untransposed Power Cables - Measurement and Simulation

This paper presents measurements of asymmetrical current distribution among parallel connected cables on the secondary side of 20/0.4kV transformers. Overloading of some cables is shown to lead to premature cable ageing. Simulation of the situation by EMTP shows that simple and affordable cable layo...

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Bibliographische Detailangaben
Hauptverfasser: Gouramanis, K., Demoulias, C.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Aging
Cable simulation
Current distribution
Current measurement
current unbalance
Electrical equipment industry
EMTP
Power cables
Power measurement
Substations
Temperature
Transformers
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Beschreibung
Zusammenfassung:This paper presents measurements of asymmetrical current distribution among parallel connected cables on the secondary side of 20/0.4kV transformers. Overloading of some cables is shown to lead to premature cable ageing. Simulation of the situation by EMTP shows that simple and affordable cable layout - other than cable transposition - can significantly deteriorate the current asymmetries. The increase in cable temperature and losses as well as the deterioration of cable useful life is calculated for various cable configurations
DOI:10.1109/EURCON.2005.1630233