Analysis of alternative parameters of dynamic resistance measurement in high voltage circuit breakers
| Autor: | Herbet Filipe dos Santos Sousa, Adriano Costa de Oliveira, George Victor Rocha Xavier, Henrique Nunes de Santana, Edson Guedes da Costa, Tarso Vilela Ferreira |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
wear
electric resistance measurement electrical contacts circuit breakers dynamic resistance measurement high-voltage circuit breaker contacts inevitable degradation processes electric arcs current interruption capacity operational faults efficient evaluating techniques degradation level HVCB contacts static resistance measurement main contacts arcing contacts mean resistance DRM curve AC degradation nonstandardised technique specified parameters DRM technique continuous evaluation HVCB ACs real wear conditions Electrical engineering. Electronics. Nuclear engineering TK1-9971 Electricity QC501-721 |
| Zdroj: | High Voltage (2019) |
| Druh dokumentu: | article |
| ISSN: | 2397-7264 |
| DOI: | 10.1049/hve.2019.0046 |
| Popis: | Throughout its lifetime, high-voltage circuit breaker (HVCB) contacts suffer from inevitable degradation processes, especially during the formation of electric arcs. Highly degraded contacts can reduce the current interruption capacity and increase the chances of operational faults, which might lead to considerable financial losses. Therefore, the use of efficient evaluating techniques is a key factor to achieve systems reliability. The dynamic resistance measurement (DRM) is a technique that can be used to evaluate the degradation level of HVCB' contacts. It stands out from the usual technique, static resistance measurement, by allowing the assessment of both the main contacts and the arcing contacts (ACs). Usually, the mean resistance or the area under the DRM curve is used to estimate the AC degradation. However, DRM is a non-standardised technique and there are no specified parameters to evaluate the real wear conditions. Therefore, an analysis of alternative parameters extractible from the DRM technique is presented in this study, such as amplitude and variance of the DRM curve. The results attest the possible use of more than one parameter for the continuous evaluation of HVCB ACs, characterising the DRM as a more complete and precise diagnosis tool. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|
Plný text