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Analysis of Thermal Recovery Characteristics for Nozzle of SF6 GCB Considering Nozzle Ablation  

Lee Byeong-Yoon (한국전기연구원)
Song Ki-Dong (한국전기연구원)
Chong Jin-Kyo (한국전기연구원)
Park Kyong-Yop (한국전기연구원)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.2, 2005 , pp. 76-82 More about this Journal
Abstract
In this paper, a method for analyzing the thermal recovery characteristics of the nozzle of gas circuit breaker was described. In order to obtain thermal recovery characteristics, the transient simulation of SF6 arc plasma within the nozzle was carried out. In particular, the nozzle ablation was taken into account by simultaneously solving the PTFE concentration equation with the governing equations such as continuity, momentum and energy equation. After that, post arc current calculation was performed with the rate of rise of recovery voltage changed. From the calculated post arc current, it was possible to suggest the thermal recovery characteristics of the nozzle of gas circuit breaker.
Keywords
Thermal Recovery Characteristics; SF6 Gas Circuit Breaker; Nozzle Ablation; PTFE Concentration; Post Arc Current;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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