一种舰船综合电力系统故障诊断算法  

Fault diagnosis algorithm for ship’s integrated power system

作　　者：罗启全 周婷 魏银珍 黄元峰[1] LUO Qiquan;ZHOU Ting;WEI Yinzhen;HUANG Yuanfeng(Wuhan Institute of Technology,School of Electrical Information Wuhan 430000,China;College of Electrical Engineering,Naval University of Engineering,Wuhan 430033,China;不详)

机构地区：[1]武汉工程大学电气信息学院,武汉430000 [2]海军工程大学电气学院,武汉430000 [3]武汉软件工程职业学院,武汉430000

出　　处：《自动化与仪器仪表》2024年第6期236-240,共5页Automation & Instrumentation

基　　金：武汉软件工程职业学院科研启动经费项目(KYQDJF2023007);国家社科基金资助项目(21BTQ074);湖北省社科基金资助项目(20ZD096)。

摘　　要：为解决舰船综合电力系统DDL保护算法计算电流上升率精确度较低、保护时间较长等问题。在最小二乘曲线拟合数学理论基础上,设计一种可以计算电流实时上升率的短路故障诊断算法。该算法将DDL算法计算一段时间内的平均上升率改进为计算每个电流数据的上升率,提升保护算法电流上升率计算的精确性;由DDL通过ARM或DSP等处理器改进为FPGA进行参数运算,该算法利用FPGA的高频与硬件属性提高故障诊断算法的速度与可靠性。实验与仿真验证结果显示,该短路故障诊断算法将诊断时间由原来的100μs以上降低到55μs。该故障诊断算法将短路故障电流峰值限制在更小的范围内,有效保证舰船综合电流系统的安全运行。In order to solve the problems such as low accuracy of current rise rate calculation and long protection time of DDL protection algorithm for ship integrated power system.Based on the mathematical theory of least-squares curve fitting,a short-circuit fault diagnosis algorithm that can calculate the current rise rate in real time is designed.Compared with the existing DDL algorithm,the new algorithm focus on the rise rate of each fault current’s data instead of the average rise rate over a period of time,which improves the accuracy of the protection algorithm.Besides,considering the high frequency and hardware properties of FPGA,FPGA replaces ARM DSP for parameter operation to improve the speed and reliability of diagnosis.The experimental and simulation verification results show that the diagnosis time is reduced from more than 100μs to 55μs and limits the peak short-circuit fault current to a smaller range,which effectively ensures the safe operation of the ship's integrated current system.

关 键 词：舰船 综合电力系统 故障诊断算法 FPGA 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]