Mechanical design and analysis of 2400kV DC UHV test Equipment without local discharge

In order to improve the ability of DC voltage withstand and local discharge test, this paper designed the first domestic 2400kV/30mA DC non-local discharge test device with the world's advanced level, which fills the gap of domestic 1000kV and above voltage test ability. The whole set of equipment adopts tower structure and modular transportation, which can be quickly built on site and improve working efficiency. Since the whole set of equipment is very heavy and high, this paper carries out strength check and simulation of the base frame support components from the perspective of mechanical engineering, and carries out 8 level wind strength check on the whole. The designed device meets the strength requirement.