零序直流小电流选线系统有源二端网络研究

Study on Two-Port Active Network With Zero Sequence DC Small Current Line Selection System

将非正弦周期检测信号分为三分之一周期内的正弦信号,分析零序直流选线系统有源二端网络的瞬时值及其工频周期内的平均值,建立以漏阻为负载的等效电源电路模型与数学模型,揭示零序直流选线系统的检测特性及其检测电压在系统中的分配与影响。

This paper divides the non-sinusoidal cycle detection signal into sinusoidal signal within 1/3 of the cycle. It analyzes the instantaneous value of the zero sequence DC line selection system and the average value within a cycle of industrial frequency. It also establishes equivalent electrical circuit model and mathematical model according to the case in which the leakage resistance is working as a load. Besides, it reveals the detection feature of the zero sequence DC line selection system and the distribution effect of its detection voltage in the system.