Negative Sequence Changes Calculation for Purposes of Fault Localization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU137576" target="_blank" >RIV/00216305:26220/20:PU137576 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9269219" target="_blank" >https://ieeexplore.ieee.org/document/9269219</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EPE51172.2020.9269219" target="_blank" >10.1109/EPE51172.2020.9269219</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Negative Sequence Changes Calculation for Purposes of Fault Localization

Popis výsledku v původním jazyce

This paper is focused on calculation of negative sequence changes of voltage and current from distributed measurement. These changes are necessary for evaluation of a new fault localization method Vdip. A principle of changes calculation is described, and problems affiliated with phasor estimation are discussed. Solutions for suppressing major disturbances, such as frequency deviation and interharmonics, are suggested. A way of cancelling out interharmonics based on averaging in sliding windows is presented. Eventually, a calculation procedure is formed, and performance of individual proceedings is tested. The analysis shows that optimized setting of time frames, from which the changes are calculated, is essential to mitigate negative impacts of the major interharmonic frequencies, and can substitute utilization of digital filtering.

Název v anglickém jazyce

Negative Sequence Changes Calculation for Purposes of Fault Localization

Popis výsledku anglicky

This paper is focused on calculation of negative sequence changes of voltage and current from distributed measurement. These changes are necessary for evaluation of a new fault localization method Vdip. A principle of changes calculation is described, and problems affiliated with phasor estimation are discussed. Solutions for suppressing major disturbances, such as frequency deviation and interharmonics, are suggested. A way of cancelling out interharmonics based on averaging in sliding windows is presented. Eventually, a calculation procedure is formed, and performance of individual proceedings is tested. The analysis shows that optimized setting of time frames, from which the changes are calculated, is essential to mitigate negative impacts of the major interharmonic frequencies, and can substitute utilization of digital filtering.

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

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings - 2020 21st International Scientific Conference on Electric Power Engineering

ISBN

978-1-7281-9479-0

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

29-34

Název nakladatele

CVUT-Czech Technical University in Prague

Místo vydání

Prague, Czech Republic

Místo konání akce

Prague

Datum konání akce

19. 10. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—