Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach
This study investigates the mechanical wear characteristics of 170 kV gas-insulated switchgear (GIS) circuit breaker contacts by conducting accelerated life testing. Samples identical to those used in 170 kV GIS were subjected to up to 20,000 cycles, which is the maximum guaranteed lifespan. Visual...
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| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10849563/ |
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| author | Jong-Geon Lee Jae-Hong Koo |
| author_facet | Jong-Geon Lee Jae-Hong Koo |
| author_sort | Jong-Geon Lee |
| collection | DOAJ |
| description | This study investigates the mechanical wear characteristics of 170 kV gas-insulated switchgear (GIS) circuit breaker contacts by conducting accelerated life testing. Samples identical to those used in 170 kV GIS were subjected to up to 20,000 cycles, which is the maximum guaranteed lifespan. Visual inspections, contact resistance measurements, mass change assessments, and operational characteristic evaluations, including trip and close coil excitation currents, were performed. Considerable surface damage and increased contact resistance were observed after approximately 12,000 operations, indicating that mechanical wear before arc formation had a substantial impact on the electrical performance and lifespan of circuit breaker contacts. The results reveal that the lifetime and reliability of GIS circuit breakers can be improved by addressing the pure mechanical wear before arc occurrence during the maintenance of GIS circuit breakers. |
| format | Article |
| id | doaj-art-f41afdeb8ec340dfa158ea12597712bf |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-f41afdeb8ec340dfa158ea12597712bf2025-02-11T00:01:24ZengIEEEIEEE Access2169-35362025-01-0113242872429410.1109/ACCESS.2025.353280510849563Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test ApproachJong-Geon Lee0https://orcid.org/0009-0004-0813-4836Jae-Hong Koo1Korea Electric Power Research Institute (KEPRI), Daejeon, South KoreaKorea Electric Power Research Institute (KEPRI), Daejeon, South KoreaThis study investigates the mechanical wear characteristics of 170 kV gas-insulated switchgear (GIS) circuit breaker contacts by conducting accelerated life testing. Samples identical to those used in 170 kV GIS were subjected to up to 20,000 cycles, which is the maximum guaranteed lifespan. Visual inspections, contact resistance measurements, mass change assessments, and operational characteristic evaluations, including trip and close coil excitation currents, were performed. Considerable surface damage and increased contact resistance were observed after approximately 12,000 operations, indicating that mechanical wear before arc formation had a substantial impact on the electrical performance and lifespan of circuit breaker contacts. The results reveal that the lifetime and reliability of GIS circuit breakers can be improved by addressing the pure mechanical wear before arc occurrence during the maintenance of GIS circuit breakers.https://ieeexplore.ieee.org/document/10849563/Accelerated testcircuit breaker lifetimecontactgas-insulated switchgear (GIS)mechanical wearno-load contact operation |
| spellingShingle | Jong-Geon Lee Jae-Hong Koo Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach IEEE Access Accelerated test circuit breaker lifetime contact gas-insulated switchgear (GIS) mechanical wear no-load contact operation |
| title | Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach |
| title_full | Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach |
| title_fullStr | Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach |
| title_full_unstemmed | Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach |
| title_short | Mechanical Wear Characteristics of 170 kV Gas-Insulated Switchgear Circuit-Breaker Contacts Before Arc Initiation: An Accelerated Lifetime Test Approach |
| title_sort | mechanical wear characteristics of 170 kv gas insulated switchgear circuit breaker contacts before arc initiation an accelerated lifetime test approach |
| topic | Accelerated test circuit breaker lifetime contact gas-insulated switchgear (GIS) mechanical wear no-load contact operation |
| url | https://ieeexplore.ieee.org/document/10849563/ |
| work_keys_str_mv | AT jonggeonlee mechanicalwearcharacteristicsof170kvgasinsulatedswitchgearcircuitbreakercontactsbeforearcinitiationanacceleratedlifetimetestapproach AT jaehongkoo mechanicalwearcharacteristicsof170kvgasinsulatedswitchgearcircuitbreakercontactsbeforearcinitiationanacceleratedlifetimetestapproach |