Research the output characteristic of the 2MV very fast transient overvoltage generator

Very fast transient overvoltage has become an important research topic in international high- voltage field due to its generation, features and the influence of GIS on insulation breakdown characteristics. In this paper, the distributed parameter simulation model is established in view of the VFTO generator, based on the model to research the main parameters that influence the output characteristic, including of energy-storage capacitors, loop inductances, circuit resistances and load capacitances, and analyzing the impact of various parameters on the VFTO generator output characteristics. Results show that the relationship between each main parameter and the output characteristic of VFTO generator, which is an important reference for developing the VFTO generator matching with the actual production.