scholarly journals Application of an Improved Mayr-Type Arc Model in Pyro-Breakers Utilized in Superconducting Fusion Facilities

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4383
Author(s):  
Jun He ◽  
Ke Wang ◽  
Jiangang Li

Pyro-breaker, a fast-responding, highly reliable and explosive-driven circuit breaker, is utilized in several Quench Protection Systems (QPS). The commutation process and its parameters are the main technical considerations in the process of designing a new pyro-breaker. The commutation parameters, such as the commutation time and the current change rate, are not only determined by the electrical parameters of the commutation circuit but also the arc behavior during the operation. The arc behavior is greatly affected by the structure and the driving mechanism of the Commutation Section (CS) in the pyro-breaker. The arc model was developed decades ago and the black-box arc model is considered a valid method to study arc behavior. In this paper, the Schavemaker black-box arc model, an improved Mayr-type arc model, is applied to study the commutation process of a newly designed pyro-breaker. Unlike normal circuit breakers, the arc discussed in this paper is discharged in deionized water. A parameter selection method is proposed. The practicability of the method is verified by numerical calculation in Power Systems Computer Aided Design (PSCAD) and experimentally.

Author(s):  
Fortune Chukwuebuka Amanze ◽  
Amanze Destiny Josiah

<span>This work presents a fault analysis simulation model of an IEEE 30 bus system in a distribution network. This work annalysed the effect of fault current and fault voltage in a distribution system. A circuit breaker was introduced into the system to neutralize the effect of the fault. The system was run on a PSCAD software and results were obtained. The system was monitored based on the start time and the end time of the fault and how well the circuit breaker reacts with those times. Fault occurred from 0.100 to 0.300 seconds before it was removed. At the time fault was not applied (i.e. from 0.00 to 0.100 and from 0.300 to 0.72), the circuit breaker was close and became open when fault was applied so as to cut off current flow through the line.The result obtained gave the disruption caused by the fault and the quick response of the circuit breaker in neutralizing it. Results gotten are based on when the circuit breaker is close and no fault is applied and when the circuit breaker is open due to fault. From this work, it was obtained that circuit breakers are very essential in system protection and reliability.</span>


Author(s):  
Osama E. Gouda ◽  
Ghada Amer ◽  
Mohamed Awaad ◽  
Manar Ahmed
Keyword(s):  

2020 ◽  
Author(s):  
Samir Ibrahim Abood ◽  
Dr. Muna Hamid Fayyadh

2018 ◽  
Vol 33 (4) ◽  
pp. 1835-1844 ◽  
Author(s):  
Toshiya Ohtaka ◽  
Viktor Kertesz ◽  
Rene Peter Paul Smeets

Author(s):  
Osama E. Gouda ◽  
Ghada Amer ◽  
Mohamed Awaad ◽  
Manar Ahmed
Keyword(s):  

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