船舶直流电网短路恢复过电压对系统保护设计影响研究  

Study on the impact of short circuit recovery overvoltage on systemprotection of marine DC grid

作　　者：鄢伦 吴大立[1,2] 李文华 Yan Lun;Wu Dali;Li Wenhua(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;Hubei Key Laboratory of Marine Electromagnetic Detection and Control,Wuhan 430205,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430205 [2]海洋电磁探测与控制湖北省重点实验室,武汉430205

出　　处：《船电技术》2023年第10期37-40,共4页Marine Electric & Electronic Engineering

摘　　要：直流电网是船舶电力系统的重要发展方向,受保护器械重量、体积等制约因素使采用限流熔断器成为船舶直流电网保护设计的选择方案,然而保护器械的快速动作使系统中出现的暂态恢复过电压可能引起非故障支路限流熔断器熔断,造成选择性保护失效。本文面向船舶直流电网短路恢复过电压现象,从理论上分析研究了其对系统保护设计的影响,并针对性的提出了改进方案和工程应用方法,可指导船舶直流电网选择性保护设计进一步优化完善,提高船舶直流电网运行的安全可靠性。DC power grid is an important development direction of marine power system.Limited to the heavy size and weight,the use of current limiting fuse has become the main choice for the protection design of marine DC power grid.However,the quickly action of protection devices may lead to recovery overvoltage in the system,which may cause the current limiting fuse of non-fault power supply branch to blow out,resulting in selective protection failure.In this paper,the theoretical analysis of the influence for the recovery overvoltage phenomenon is showed.The improvement solution is put forward which can improve the selective protection design and the safety operation of marine DC power grid.

关 键 词：直流电网 限流熔断器 恢复过电压 选择性保护 

分 类 号：U665[交通运输工程—船舶及航道工程]