Enhancements to dielectric response measurements of oil-paper insulation for online and offline applications

Yang, Xu (2015) Enhancements to dielectric response measurements of oil-paper insulation for online and offline applications. PhD thesis, Queensland University of Technology.

Abstract

The research introduces a promising technique for monitoring the degradation status of oil-paper insulation systems of large power transformers in an online mode and innovative enhancements are also made on the existing offline measurements, which afford more direct understanding of the insulation degradation process. Further, these techniques benefit from a quick measurement owing to the chirp waveform signal application. The techniques are improved and developed on the basis of measuring the impedance response of insulation systems. The feasibility and validity of the techniques was supported by the extensive simulation works as well as experimental investigations.

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118 since deposited on 30 Apr 2015
47 in the past twelve months

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ID Code: 82373
Item Type: QUT Thesis (PhD)
Supervisor: Ledwich, Gerard & Nielsen, Shawn
Keywords: Dielectric response measurements, Frequency Domain Spectroscopy (FDS), Online application, Oil-paper insulation system, Chirp waveform, Condition Based Maintenance (CBM), Bridge circuit measurement
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Institution: Queensland University of Technology
Deposited On: 30 Apr 2015 04:15
Last Modified: 08 Sep 2015 06:21

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