DocumentCode :
3720308
Title :
Analysis of interrupting characteristics for O-CO operation of self-blast type circuit breakers
Author :
Tae-hun Song;Hee Sang Sohn;Jin Ho Jun
Author_Institution :
Hyundai Heavy Industries Co. Ltd., Ulsan, Korea
fYear :
2015
Firstpage :
484
Lastpage :
487
Abstract :
High voltage circuit breaker should interrupt short circuit currents not only under O operation for minimum arcing time but also under O-CO operation for maximum arcing time. In this study, analysis for act extinction characteristics under the O-CO operation for maximum arcing time has been conducted with the self-blast type high voltage circuit breaker. For the analysis of arc characteristics, a commercial fluid dynamics(CFD) program was used. The theoretical analysis results show that the arc extinction performance of the second O operation is severely affected by the conditions of remaining thermal gas in the thermal expansion chamber after the first O operation. This means that O-CO process analysis is inevitable for the correct evaluation of the interruption performance of O-CO operation for maximum arcing time in the self-blast type high voltage circuit breaker.
Keywords :
"Circuit breakers","Mathematical model","Integrated circuit modeling","Interrupters","Sulfur hexafluoride","Lorentz covariance","Heating"
Publisher :
ieee
Conference_Titel :
Electric Power Equipment ? Switching Technology (ICEPE-ST), 2015 3rd International Conference on
Type :
conf
DOI :
10.1109/ICEPE-ST.2015.7368322
Filename :
7368322
Link To Document :
بازگشت