关于某电厂工控计算机电源故障导致上游空气开关越级跳闸问题的研究  

Research on the Problem of Override Trip of Upstream Air Switch Caused by Power Failure of Industrial Control Computer in a Power Plant

作　　者：李实[1] 栾宝红 LI Shi;LUAN Bao-hong(Daya Bay Nuclear Power Operations and Management Co.Ltd.,Shenzhen 518000,China)

机构地区：[1]大亚湾核电运营管理有限责任公司仪控部,广东深圳518000

出　　处：《中小企业管理与科技》2018年第8期175-176,共2页Management & Technology of SME

摘　　要：为了分析并解决工业计算机电源故障导致上游空气开关越级跳闸问题,通过研究空气开关的设计合理性,发现原设计的开关级联匹配存在缺陷,即两级开关不具备保护选择性。根据研究的结论确定方案,对原有设计进行变更,使用新型号的开关进行匹配,从而实现短路故障情况下的级联开关保护。In order to analyze and solve the problem of override trip of upstream air switch caused by the power failure of the industrial computer,through studying the rationality of the design of the air switch,it finds that the switch cascade matching of the original design is defective,that is,the two stage switch has no protection selectivity.According to the conclusion of the study,we decide to change the original design and match it with the new type of switch,so as to realize the cascade switch protection under the condition of short circuit fault.

关 键 词：工控计算机 电源短路 级联开关 跳闸 保护选择性 

分 类 号：TD611[矿业工程—矿山机电]