Comprehensive Line Selection Technology Based on Dual Frequency Method and Leakage Current Comparison Method
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.
dual-frequency methodleakage current comparison methodsmall resistance groundinglarge resistance groundingcomprehensive line selection
万方数据
维普
