Voltage uprating of overhead transmission lines

Bhattarai, R., Haddad, Abderrahmane ORCID: https://orcid.org/0000-0003-4153-6146, Griffiths, Huw and Harid, Noureddine ORCID: https://orcid.org/0000-0001-8203-1895 2010. Voltage uprating of overhead transmission lines. Presented at: 45th International Universities Power Engineering Conference, Cardiff, UK, 31 August - 3 September 2010. 2010 45th International Universities Power Engineering Conference (UPEC 2010). London: Institute of Electrical and Electronics Engineers (IEEE), pp. 348-353.

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Abstract

In recent years, uprating of existing overhead power line has become a popular option for electric utilities to address increasing demand for power. Uprating overhead line by increasing voltage allows considerable increase in power transfer capability. This paper initially examines technical issues and conventional methods of uprating the voltage of overhead transmission lines. It then considers a case of existing 275kV line in L3 tower to analyse these issues and propose appropriate process for its possible uprating to 400kV system. In this case, phase-to-earth clearance was found to be a key issue for voltage uprating. Application of line surge arresters along the line was proposed for controlling overvoltage thereby reducing the minimum required clearance for 400kV system

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
ISBN:	9781424476671
Last Modified:	21 Oct 2022 10:18
URI:	https://orca.cardiff.ac.uk/id/eprint/39760

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