Research and Analysis on the Influence of Environmental Factors on the Leakage Current of CVT

As an important primary equipment of the power system, the capacitive voltage transformer(CVT) directly affects the safe operation of the power grid and the fairness and justice of electricity measurement. Leakage current is an important parameter reflecting the insulation status of CVT. Due to the particularity of its structure, environmental factors will affect its insulation aging, which will lead to faults and defects. Based on the structure and working principle of CVT, this paper conducts a theoretical analysis of CVT leakage current generation principle and environmental influence factors, builds a simulation circuit diagram in Simulink, and deeply studies the influence of various environmental factors on CVT leakage current.