Simulator of UHF Signal of the Partial Discharge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F22%3APU145364" target="_blank" >RIV/00216305:26220/22:PU145364 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9793284" target="_blank" >https://ieeexplore.ieee.org/document/9793284</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/PIERS55526.2022.9793284" target="_blank" >10.1109/PIERS55526.2022.9793284</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simulator of UHF Signal of the Partial Discharge

Popis výsledku v původním jazyce

Nuclear power plants are one of the largest producers of electricity. To remotely transmit this energy, they use the transformation of electrical voltage to higher levels using power transformers. Decommissioning such a transformer result in very high financial losses. One of the influences affecting the life and function of transformers is the activity of so-called partial discharges (PD). One of the electrical allocutions of partial discharges is the emission of broadband electromagnetic signals in the ultra-high frequency (UHF) band. This specific manifestation of partial discharge is used by the UHF method of partial discharge detection, which is very useful in terms of evaluating the state of insulation. In this paper we present methods for simulating partial discharges in transformer oil. Very thin cannulas and gas with lower electrical strength than air was used to develop the bubbles to reduce the voltage required to form PD. A simulation device for the generation of partial discharges has been proposed, realized in a vessel filled with transformer oil, in which gas bubbles with lower electrical strength are formed, in which the discharge activity will be initiated by means of electrodes with a spherical cross-section. This arrangement is supplemented by measuring apparatus for sensing, recording and subsequent analysis of signals emitted by PD. In the simulation program Ansys Maxwell, simulations of the gas bubble between the electrodes in the transformer oil were performed. The work also deals with the comparison of the achieved results for different antennas in the time and frequency domain.

Název v anglickém jazyce

Simulator of UHF Signal of the Partial Discharge

Popis výsledku anglicky

Nuclear power plants are one of the largest producers of electricity. To remotely transmit this energy, they use the transformation of electrical voltage to higher levels using power transformers. Decommissioning such a transformer result in very high financial losses. One of the influences affecting the life and function of transformers is the activity of so-called partial discharges (PD). One of the electrical allocutions of partial discharges is the emission of broadband electromagnetic signals in the ultra-high frequency (UHF) band. This specific manifestation of partial discharge is used by the UHF method of partial discharge detection, which is very useful in terms of evaluating the state of insulation. In this paper we present methods for simulating partial discharges in transformer oil. Very thin cannulas and gas with lower electrical strength than air was used to develop the bubbles to reduce the voltage required to form PD. A simulation device for the generation of partial discharges has been proposed, realized in a vessel filled with transformer oil, in which gas bubbles with lower electrical strength are formed, in which the discharge activity will be initiated by means of electrodes with a spherical cross-section. This arrangement is supplemented by measuring apparatus for sensing, recording and subsequent analysis of signals emitted by PD. In the simulation program Ansys Maxwell, simulations of the gas bubble between the electrodes in the transformer oil were performed. The work also deals with the comparison of the achieved results for different antennas in the time and frequency domain.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2022 Photonics & Electromagnetics Research Symposium (PIERS)

ISBN

978-1-6654-6023-1

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

1150-1154

Název nakladatele

IEEE

Místo vydání

neuveden

Místo konání akce

Hangzhou

Datum konání akce

25. 4. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000836198500205