摘要
本文对同步发电机三相短路的短路电流变化率表达式进行了数学推导,分析不同短路条件下,短路电流初始变化率随系统参数,短路点位置及短路合闸角变化的规律,在此基础上,提炼出判断短路故障的方法。提出一种基于协同策略的船舶配电网络选择性保护方法,该方法将这些分散的保护装置有机地联系起来,对提高船舶配电网络保护的有效性具有重要意义。
In this paper, the expression of the variation rate of short current for the three-phase synchronous generator is deduced. The variation of the initial rate of short circuit current with the change of system parameter, locating of short circuit fault and the change of initial fault current angle under different short circuit conditions is analyzed. On this basis, the criterion of judging short circuit fault is extracted. A new selective protection method for ship＇ power distribution network based on cooperative strategy is proposed, which links these separated protection devices organically and has great significance to improve the effectiveness of ship network protection.
出处
《船电技术》
2016年第10期23-27,共5页
Marine Electric & Electronic Engineering
关键词
舰船
短路故障
快速定位
协同保护
ship
short circuit fault
fast locating
coordinated protection
作者简介
作者简介：张涛（1991-），男，研究生。专业方向：电力系统及安全运行。
