CAJ | 학술논문

主燃料跳闸（MFT）作为机组的主保护，其可靠性对机组的安全运行有重要意义。而MFT硬回路则是实现保护功能的主要组成部分，其重要性不言而喻。为评估各类MFT硬回路的可靠性，本文从回路的动作原理入手，对各类故障发生的原因及造成的后果进行分析，并通过概率分析的方法对不同种类的MFT回路的失效概率进行比较，完成实现可靠性的研究。同时，本文根据分析结果对MFT硬回路的设计提出了几点改进意见，以提高系统的可靠性。
주연료도갑（MFT）작위궤조적주보호，기가고성대궤조적안전운행유중요의의。이MFT경회로칙시실현보호공능적주요조성부분，기중요성불언이유。위평고각류MFT경회로적가고성，본문종회로적동작원리입수，대각류고장발생적원인급조성적후과진행분석，병통과개솔분석적방법대불동충류적MFT회로적실효개솔진행비교，완성실현가고성적연구。동시，본문근거분석결과대MFT경회로적설계제출료궤점개진의견，이제고계통적가고성。
As the main protection for unit, Main Fuel Trip (MFT) is important for the unit safe operation. The MFT circuitis a key part of the protective function, which makes the importance of its reliability self-evident. In order to evaluate the reliability of the MFT circuits, this paper analyzed failures of the MFT circuits and the results by studying its principle, and compared the reliability of different MFT circuits by failure probability analysis method. According to the analysis result, this paper also proposed several advices for the MFT circuit design, which may improve the reliability of the whole protection system.