Test site for nonstandard combined accelerated aging of medium voltage insulation systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F16%3A00305910" target="_blank" >RIV/68407700:21230/16:00305910 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/ICHVE.2016.7800932" target="_blank" >http://dx.doi.org/10.1109/ICHVE.2016.7800932</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICHVE.2016.7800932" target="_blank" >10.1109/ICHVE.2016.7800932</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Test site for nonstandard combined accelerated aging of medium voltage insulation systems

Popis výsledku v původním jazyce

Presently, the wide usage of power electronics in electrical power systems brings a new type of voltage stresses of insulation systems. Power electronic systems, as high voltage dc systems, flexible ac transmission systems, voltage source convertors, static compensators etc., are usually using the pulse width modulation (PWM) that generates a wide spectrum of interferences. Harmonics and impulses with the main frequency content up to tens of kilohertz can arise as a consequence of mutual interaction between switching pulses emitted by power electronic component and distribution network passive parameters (resistance, inductance, and capacitance). Voltage distortions are superimposed to the power frequency voltage. Superimposed very fast and repetitive overvoltages can significantly decrease the life time of medium voltage devices. A novel test site for accelerated aging of medium voltage insulation system with new stress conditions was proposed and realized. The test site is able to simulate the voltage stress which more represents the real situation in power systems containing power electronics. Moreover, the proposed test site allows combining of the voltage stress with the thermal stress by high current flow in the cable conductor. The fundamental characteristics of test site components were determined and verified according to the preliminary proposal. The output voltage waveforms are discussed regarding to the real data gathered from measurements in distribution grid.

Název v anglickém jazyce

Test site for nonstandard combined accelerated aging of medium voltage insulation systems

Popis výsledku anglicky

Presently, the wide usage of power electronics in electrical power systems brings a new type of voltage stresses of insulation systems. Power electronic systems, as high voltage dc systems, flexible ac transmission systems, voltage source convertors, static compensators etc., are usually using the pulse width modulation (PWM) that generates a wide spectrum of interferences. Harmonics and impulses with the main frequency content up to tens of kilohertz can arise as a consequence of mutual interaction between switching pulses emitted by power electronic component and distribution network passive parameters (resistance, inductance, and capacitance). Voltage distortions are superimposed to the power frequency voltage. Superimposed very fast and repetitive overvoltages can significantly decrease the life time of medium voltage devices. A novel test site for accelerated aging of medium voltage insulation system with new stress conditions was proposed and realized. The test site is able to simulate the voltage stress which more represents the real situation in power systems containing power electronics. Moreover, the proposed test site allows combining of the voltage stress with the thermal stress by high current flow in the cable conductor. The fundamental characteristics of test site components were determined and verified according to the preliminary proposal. The output voltage waveforms are discussed regarding to the real data gathered from measurements in distribution grid.

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

—

Projekt

—

Návaznosti

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 IEEE International Conference on High Voltage Engineering and Application

ISBN

978-1-5090-0496-6

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

IEEE

Místo vydání

New York

Místo konání akce

No.298 Tianren South Street, Wuhou, Chengdu

Datum konání akce

19. 9. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000392251800358