基于双频法和漏电流比较法的综合选线技术  

Comprehensive Line Selection Technology Based on Dual Frequency Method and Leakage Current Comparison Method

作　　者：戴克昶 叶志浩[1] 陈亮[1] DAI Kechang;YE Zhihao;CHEN Liang(School of Electrical Engineering,Naval University of Engineering,Wuhan 430033)

机构地区：[1]海军工程大学电气工程学院,武汉430033

出　　处：《舰船电子工程》2024年第2期193-199,共7页Ship Electronic Engineering

摘　　要：针对双频法在实船运用中暴露出来的问题,论文提出了一种综合了双频法和漏电流比较法的选线策略,分析了各支路在不同频率的低频信号下的漏电流关系并应用于双频法无法解决的小电阻接地选线问题,分析了各支路漏电流大小排序与对地电容大小排序间的关系并应用于双频法无法解决的大电阻接地选线问题,当接地电阻处于双频法的可测范围内时仍然使用双频法测支路绝缘电阻的方法进行选线。通过Matlab/Simulink平台的仿真计算表明,该综合选线技术是可行的。Aiming at the problems exposed by the dual-frequency method in the application of real ships,this paper proposes a line selection strategy that integrates the dual-frequency method and the leakage current comparison method,analyzes the leakage current relationship between each branch under the low-frequency signal at different frequencies and applies it to the problem of small resistance grounding line selection that cannot be solved by the dual-frequency method,analyzes the relationship between the size ordering of the leakage current of each branch and the size of the capacitance to the ground,and applies it to the problem of large resistance grounding line selection that cannot be solved by the dual-frequency method.When the grounding resistance is with⁃in the measurable range of the dual-frequency method,the method of measuring the insulation resistance of the branch is still used by the dual-frequency method for line selection.The simulation calculation of the Matlab/Simulink platform shows that the compre⁃hensive line selection technology is feasible.

关 键 词：双频法 漏电流比较法 小电阻接地 大电阻接地 综合选线 

分 类 号：TM54[电气工程—电器]