NDLI: Validations of simulation of UHF electromagnetic wave propagation in an oil-filled tank by time-domain measurements

Content Provider	IET Digital Library
Author	Umemoto, Takahiro Tenbohlen, Stefan
Abstract	Degradation of the electrical insulation within power transformers by partial discharge (PD) may lead to catastrophic failure of the apparatus, hence PD should be detected at an early stage. Ultra-high frequency (UHF) measurement method, i.e. detecting electromagnetic (EM) waves in the UHF range radiated from PD, has recently received attention for its various advantages, such as the robustness against external noises and its capability of localisation of the PD position. However, the EM waves suffer attenuation while propagating within transformers, in some cases, which results in undesirable low detection sensitivity. To evaluate the propagation and attenuation characteristics of the EM waves quantitatively, the simulation technique of the EM wave propagation is of importance. In this study, at first, the EM waveforms as well as attenuation properties of their amplitudes and cumulative energies while propagating through transformer windings in an oil-filled tank were experimentally investigated. Next, the detailed conditions for simulating the EM wave propagation based on time-domain finite integration technique were described. Then, the simulated results were compared with the experimentally obtained ones. These simulation and measurement results showed good agreement with each other, therefore the authors have successfully validated the newly developed simulation of the EM wave propagation.
Starting Page	1646
Ending Page	1652
Page Count	7
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 9, May (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.6173
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-11-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Electromagnetic Wave Electromagnetic Wave Propagation EM Wave EM Wave Propagation Finite Element Analysis Mathematical Analysis Oil-filled Tank Partial Discharge Partial Discharges Power Transformer Time Domain Analysis Time Domain Measurement Time-domain Finite Integration Technique Transformer And Reactors Transformer Oil Transformer Windings UHF Electromagnetic Wave Propagation Ultra-high Frequency Measurement Method
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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