| Title |
Methodology for Designing Guide Needle of the Superconducting Arc-induction Type DC Circuit Breaker |
| Authors |
김지혜(Ji-Hye Kim) ; 최효상(Hyo-Sang Choi) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.2.315 |
| Keywords |
Charge carrier density; DC circuit breaker; Design for experiments; Design standards; Systems operation |
| Abstract |
As renewable energy sources increase, DC transmission and distribution systems are attracting attention. Renewable energy sources are exposed to accidents such as fire, so a DC breaker must be used safely. However, the previously invented DC circuit breakers have a short mechanical life. This research team proposed a superconducting arc-induction type DC circuit breaker to solve this problem. The superconducting arc-induction type DC circuit breaker comprises DC power, normal load, induction needle, and mechanical breaking contact. This paper proposes considerations when designing an induction needle, which is the most important element of a superconducting arc induction type DC circuit breaker. For this purpose, the interrupting time according to the curvature radius and location of the induction needle was analyzed. As a result, when the radius of curvature of the induction needle was 0.2 mm, the position of the induction needle was optimal at 4.7 mm on the x-axis and 11.05 mm on the y-axis. |