Dielectric behaviour of gaseous insulation with synthetic air at AC stress

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F16%3A43928869" target="_blank" >RIV/49777513:23220/16:43928869 - isvavai.cz</a>

Výsledek na webu

<a href="http://ieeexplore.ieee.org/document/7521740/" target="_blank" >http://ieeexplore.ieee.org/document/7521740/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EPE.2016.7521740" target="_blank" >10.1109/EPE.2016.7521740</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric behaviour of gaseous insulation with synthetic air at AC stress

Popis výsledku v původním jazyce

The paper deals with basic investigation of AC breakdown behaviour of gaseous insulation with synthetic air at different level of field homogeneity and gas pressure. The measurement was performed at different gas pressure ranging from 0.1 to 0.25 MPa and gap distances from 1 to 9 cm, using an electrode test-set "tip - bowl". The test parameters were chosen in such a way that different field types could be realized. At small distances the electrical field is weakly inhomogeneous and the breakdown values correspond to the discharge inception level. The measured values show a reasonable agreement to those values based on the calculation of the streamer criterion by using a relevant approximation formula for the effective ionisation coefficient. For larger distances the electrical field becomes more inhomogeneous and the calculated streamer inception voltage corresponds to the partial discharge (PD) inception voltage only. The calculated inception voltage values fit the measured values over the applied gap distance and gas pressure quite sufficiently. The best fit to the measured results was reached by slightly changing the parameters of the approximation formula depending on the gas pressure value. Additional PD measurement shows different PD activity dependent on gas pressure and gap distance.

Název v anglickém jazyce

Dielectric behaviour of gaseous insulation with synthetic air at AC stress

Popis výsledku anglicky

The paper deals with basic investigation of AC breakdown behaviour of gaseous insulation with synthetic air at different level of field homogeneity and gas pressure. The measurement was performed at different gas pressure ranging from 0.1 to 0.25 MPa and gap distances from 1 to 9 cm, using an electrode test-set "tip - bowl". The test parameters were chosen in such a way that different field types could be realized. At small distances the electrical field is weakly inhomogeneous and the breakdown values correspond to the discharge inception level. The measured values show a reasonable agreement to those values based on the calculation of the streamer criterion by using a relevant approximation formula for the effective ionisation coefficient. For larger distances the electrical field becomes more inhomogeneous and the calculated streamer inception voltage corresponds to the partial discharge (PD) inception voltage only. The calculated inception voltage values fit the measured values over the applied gap distance and gas pressure quite sufficiently. The best fit to the measured results was reached by slightly changing the parameters of the approximation formula depending on the gas pressure value. Additional PD measurement shows different PD activity dependent on gas pressure and gap distance.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1607" target="_blank" >LO1607: RICE – Nové technologie a koncepce pro inteligentní průmyslové systémy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 2016 17th International Scientific Conference on Electric Power Engineering (EPE)

ISBN

978-1-5090-0907-7

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

325-329

Název nakladatele

Czech Technical University in Prague

Místo vydání

Prague

Místo konání akce

Praha, Česká republika

Datum konání akce

16. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000382934600026