电容式电压互感器频谱特性及其应用研究OA

The trend toward power electronicization has led to a rapid increase in high frequency disturbance compo-nents in power systems,creating an urgent need to comprehensively analyze and study the spectral characteristics of capacitive voltage transformer(CVT)over a wide frequency range,so as to ensure the safe and reliable operation of power system measurement,control,and protection devices.Based on the structural feature of CVT,in this paper the transfer function method is used to analyze the main factors influencing the CVT spectral characteristic and their cor-responding effects and,on this basis,a wide frequency domain harmonics analysis model for the CVT is proposed.The spectral characteristic analysis results based on this model are consistent with the conclusions drawn from the aforementioned analysis of influencing factors.Finally,the practical application scenarios of the CVT spectral charac-teristic study are also illustrated through examples.