A comparison of partial discharge sensors for natural gas insulated high voltage equipment

Widger, Phillip ORCID: https://orcid.org/0000-0002-0662-8590, Carr, Daniel, Hills, Meirion ORCID: https://orcid.org/0000-0003-3893-8486 and Reid, Alistair ORCID: https://orcid.org/0000-0003-3058-9007 2020. A comparison of partial discharge sensors for natural gas insulated high voltage equipment. Sensors 20 (16) , 4443. 10.3390/s20164443

PDF - Published Version Available under License Creative Commons Attribution. Download (8MB)

Abstract

The research in this paper consists of practical experimentation on a gas insulated section of high voltage equipment filled with carbon dioxide and technical air as a direct replacement to sulphur hexafluoride (SF6) and analyses the results of PD measurement by way of internal UHF sensors and external HFCTs. The results contribute to ongoing efforts to replace the global warming gas SF6 with an alternative such as pure carbon dioxide or technical air and are applicable to mixtures of electronegative gases that have a high content of buffer gas including carbon dioxide. The experiments undertaken involved filling a full-scale gas insulated line demonstrator with different pressures of CO2 or technical air and applying voltages up to 242 kV in both clean conditions and particle contaminated conditions. The results show that carbon dioxide and technical air can insulate a gas section normally insulated with SF6 at phase-to-earth voltage of 242 kV and that both HFCT and UHF sensors can be used to detect partial discharge with natural gases. The internal UHF sensors show the most accurate PD location results but external HFCTs offer a good compromise and very similar location accuracy.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	MDPI
ISSN:	1424-8220
Date of First Compliant Deposit:	12 August 2020
Date of Acceptance:	7 August 2020
Last Modified:	25 Oct 2024 15:29
URI:	https://orca.cardiff.ac.uk/id/eprint/134119

Citation Data

Cited 1 time in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item