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Mechanism and suppression of breaking overvoltage of DC circuit breakers

doi: 10.1049/hve2.12491
AbstractThe occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and formulates a fault protection strategy. Additionally, a simulation model of the system is developed to analyse the overvoltage characteristics within the DC distribution network across different nodes and fault conditions. By examining the factors that influence breaking overvoltage, this paper unravels the fundamental mechanisms associated with DCCB‐related overvoltage generation. Furthermore, the paper suggests measures to alleviate DCCB overvoltage. These insights provide a theoretical and technical basis for the design and operation of DCCBs within DC distribution networks.
- Tsinghua University China (People's Republic of)
- Tsinghua Sichuan Energy Internet Research Institute China (People's Republic of)
- Tsinghua Sichuan Energy Internet Research Institute China (People's Republic of)
QC501-721, Electricity, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
QC501-721, Electricity, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).1 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average
