DocumentCode :
3231728
Title :
Application of optical fibre sensor for partial discharge detection in high-voltage power equipment
Author :
Zargari, Abbas ; Blackburn, Trevor R.
Author_Institution :
Dept. of Electr. Power Eng., New South Wales Univ., Sydney, NSW, Australia
Volume :
2
fYear :
1996
fDate :
20-23 Oct 1996
Firstpage :
541
Abstract :
The insulation system of HV power equipment deteriorates due to partial discharges. It is thus desirable to monitor the insulation of power apparatus whilst in service. Ultrasonic signals generated by the partial discharges in high-voltage power equipment can be detected with suitable pressure transducers and related to the PD (Partial Discharge) source. Acoustooptic sensors have shown high sensitivity and good accuracy of measurement of physical parameters. Optical fibres are chemically inert and do not affect the integrity of the insulation system, hence they provide a suitable means of monitoring of the condition of the HV equipment. An optical signal is launched periodically into an all-fibre sensor system. The induced stress on the fibre core caused by the pressure wave perturbation changes the phase of the optical signal traversing the fibre. The phase shift is detected by using a reflectrometric pulsed interferometer technique with a phase modulated type sensor. The extracted PD signals show a high sensitivity
Keywords :
acoustic signal detection; acousto-optical devices; fibre optic sensors; insulation testing; light interferometry; partial discharges; power transformer insulation; power transformer testing; reflectometry; HV power equipment insulation; acoustooptic sensors; all-fibre sensor system; high-voltage power equipment; induced stress; optical fibre sensor; partial discharge detection; phase modulated type sensor; phase shift detection; power transformers; pressure transducers; pressure wave perturbation; reflectrometric pulsed interferometer technique; ultrasonic signals; Insulation; Monitoring; Optical fiber devices; Optical fiber sensors; Optical interferometry; Optical modulation; Optical sensors; Partial discharges; Power generation; Signal generators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
Type :
conf
DOI :
10.1109/CEIDP.1996.564529
Filename :
564529
Link To Document :
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