Research and Design of SF6 Insulated Integrated Impulse Voltage Generator

In this paper, to solve the gradual difficulty of traditional power frequency withstand voltage and partial discharge tests in meeting the insulation detection requirements of on-site primary equipment, as well as the problems of large weight and volume, transportation and operation difficulties of traditional impulse withstand voltage test devices, this article introduces the basic principle, circuit structure, and common impulse voltage waveforms used in impulse withstand voltage tests of impulse voltage generators, and takes the design of 2400 kV/240 kJ impulse voltage generators as an example, The core parameters and overall design of the system have been completed. On this basis, a prototype of SF6 insulated integrated impulse voltage generator system was developed. At the same time, the relevant test results show that the performance indicators of the designed impulse voltage generator meet the test requirements, and can effectively solve practical problems such as the difficulty of on-site impulse testing for ultra-high voltage GIS and other substation equipment, with strong application value.