Partial discharge detection and localization system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU110613" target="_blank" >RIV/00216305:26220/14:PU110613 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Partial discharge detection and localization system
Original language description
This article describes the partial discharges (PD) detection and localization system. Localization can be performed on the basis of measured UHF waveforms analysis during activity of the partial discharges. The time-shifts of the waveforms related to transient process occurrence in the signals are the main input parameters for localization methods. In order to estimate the position of the signal source in the 3D space a minimum of four antennas has to be used, since the time of the PD is unknown. Analysis of the PD starts with visual investigation of the signals present inside of the power oil transformer. PD signal level is in comparison to other signals inside the transformer very low. Therefore, signal line contains, except amplifiers, also controlled attenuators to reach required trigger conditions. Detailed investigation of all signals inside transformer is provided in memory mode in which system store defined number of signals for offline diagnosis a localization. Continual and memory mode of the system also contain discrimination method for non PD signals removing. Discrimination method is based on simultaneous detection of the signal inside and outside of the transformer with aim to acquire only signal which comes from inside of the transformer. Localization of the PD origin is based on TDOA and matrix algorithm. Resulting position are visualized as point in transformer 2D and 3D scheme.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Progress in Electromagnetics Research Symposium 2014, Guangzhou
ISBN
978-1-934142-28-8
ISSN
1559-9450
e-ISSN
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Number of pages
5
Pages from-to
2344-2349
Publisher name
Neuveden
Place of publication
Neuveden
Event location
Guangzhou
Event date
Aug 25, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000393225900520