摘要
大型船舶一般采用多发电机供电,在不同的运行工况下,运行的发电机数及容量都不相同,不利于保护的整定与运行。电流差动保护具有绝对的选择性,其性能不受系统运行方式的影响,因此在船舶电力系统的重要部位,有必要合理配置一定的电流差动保护。本文对船舶电网的实际工况进行分析,讨论了船舶电网的保护协调问题,提出电流差动保护的配置原则,为船舶电网的安全运行提供保障。
Large ships usually adopt couples of generators to provide power. In different operation conditions, the number and the capacity of generators are different. Current differential protection whose operation characteristics are not approved to be affected by operation modes has natural ability to cut off fault and isolating it, so it is necessary to install current differential protection in the ship grid. Based on the analysis of the actual operation conditions, the paper discusses the cooperation issue of ship grid protection and provides some proposals on the installation of current differential protection. This offers the strong basis to guarantee the safe operation of ship grids.
出处
《船电技术》
2012年第2期5-7,共3页
Marine Electric & Electronic Engineering
基金
国家重大科技专项经费资助(编号:2008ZX05027-003)
教育部新世纪优秀人才资助项目(NCET-08-0356)
关键词
船舶电网
电流差动
故障切除
运行方式
选择性
ship grid
current differential
cutting off fault
operation mode
selective
