| Title |
Development of Metal Oxide Varistors for Energy Absorption in DC Circuit Breakers within DC Distribution Networks |
| Authors |
최승규(Seung-Kyu Choi) ; 이경주(Kyoung-Joo Lee) ; 곽지혜(Ji-Hye Kwak) ; 김유민(Yu-Min Kim) ; 이재복(Jae-Bok Lee) ; 강성만(Sung-Man Kang) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.4.700 |
| Keywords |
Metal Oxide Varistor(MOV); Medium Voltage Direct Current(MVDC); Metal Oxide Surge Arrester(MOSA); DC circuit breaker |
| Abstract |
In this paper, a MOV(Metal Oxide Varistor), which is a component of a MOSA(Metal Oxide Surge Arrester) for DC circuit breakers required in MVDC(Medium Voltage Direct Current) distribution networks, is proposed. The developed MOV has a reference voltage of 7.2 kV @ 1 mA, a residual voltage of 17 kV @ 10 kA, and an absorbing energy of 39 kJ. Therefore, the proposed MOV has suitable characteristics for configuring a MOSA for DC circuit breakers in 42 kV MVDC distribution networks which requires an absorption energy of 2 MJ. In this paper, the design process and performance test results of the proposed MOV are presented. |