Spectroscopic On-Line Monitoring of Cu/W Contacts Erosion in HVCBs Using Optical-Fibre Based Sensor and Chromatic Methodology



Wang, Z, jones, GR, Spencer, JW, Wang, X and Rong, M
(2017) Spectroscopic On-Line Monitoring of Cu/W Contacts Erosion in HVCBs Using Optical-Fibre Based Sensor and Chromatic Methodology. Sensors, 17 (3).

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Contact Erosion Study using Chromatic Methods.pdf - Accepted Version

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Abstract

Contact erosion is one of the most crucial factors affecting the electrical service lifetime ofhigh-voltage circuit breakers (HVCBs). On-line monitoring the contacts’ erosion degree is increasinglyin demand for the sake of condition based maintenance to guarantee the functional operationof HVCBs. A spectroscopic monitoring system has been designed based upon a commercial245 kV/40 kASF6live tank circuit breaker with copper–tungsten (28 wt % and 72 wt %) arcingcontacts at atmosphericSF6pressure. Three optical-fibre based sensors are used to capture thetime-resolved spectra of arcs. A novel approach using chromatic methods to process the time-resolvedspectral signal has been proposed. The processed chromatic parameters have been interpreted toshow that the time variation of spectral emission from the contact material and quenching gas areclosely correlated to the mass loss and surface degradation of the plug arcing contact. The feasibilityof applying this method to online monitoring of contact erosion is indicated.

Item Type: Article
Uncontrolled Keywords: contacts erosion, high-voltage circuit breaker (HVCB);, optical-fibre based sensor, chromatic methodology, spectroscopic, online monitoring
Depositing User: Symplectic Admin
Date Deposited: 06 Mar 2017 11:20
Last Modified: 27 Nov 2020 11:10
DOI: 10.3390/s17030519
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/3006223