山东理工大学学报（自然科学版）2026，Vol.40Issue(5)：29-34,6.
桥式多端口直流断路器可靠性分析
Reliability analysis of bridge-type multiport hybrid DC circuit breaker
摘要
Abstract
As a critical device for isolating DC line faults in multi-terminal DC grids,the reliability of multiport DC circuit breakers directly impacts the overall reliability of the power grid.To quantitatively e-valuate the reliability of bridge-type multi-port DC circuit breakers,this paper proposes a Markov process-based reliability modeling and assessment method.Case studies are conducted to reveal the quantitative relationship between redundancy levels of key components and reliability indicators.Firstly,the topologi-cal structure and operational principles of bridge-type multi-port DC circuit breakers are elaborated.Sec-ondly,a reliability model based on the Markov process is established,and the calculation method for steady-state probability is derived.Finally,case verification is conducted on a three-port bridge-type cir-cuit breaker.By computing steady-state probability metrics,the effects of key component redundancy on equipment reliability are systematically analyzed,which validates the correctness and effectiveness of the proposed model.关键词
桥式多端口/直流断路器/冗余度/可靠性分析/马尔可夫过程Key words
bridge-type multiport hybrid/DC circuit breaker/redundancy/reliability analysis/Markov process分类
信息技术与安全科学引用本文复制引用
张烁,邹贵彬..桥式多端口直流断路器可靠性分析[J].山东理工大学学报（自然科学版）,2026,40(5):29-34,6.基金项目
江苏省自然科学基金项目(BK20230255) （BK20230255）
