System suitable for simulating dielectric discharge in complex environment and use method

Abstract

The invention discloses a system suitable for simulating dielectric discharge in a complex environment and a use method. The system comprises a tested sample, a controller, an ultrahigh vacuum deviceand a high-low temperature dielectric discharge test device. The tested sample is arranged in the high-low temperature dielectric discharge test device; and the ultrahigh vacuum device and the high-low temperature dielectric discharge test device are electrically connected with the controller. The ultrahigh vacuum device mainly comprises a vacuum chamber, a mechanical vacuum pump, a compound molecular pump and a pipeline, wherein the mechanical vacuum pump, the compound molecular pump and the vacuum chamber are sequentially connected through the pipeline; and the high-low temperature dielectric discharge test device comprises a high-voltage insulating sleeve, a test workbench and refrigeration equipment, wherein the test workbench is arranged at the bottom of the vacuum chamber, the testedsample is placed on the test workbench, and the high-voltage insulating sleeve applies voltage to the tested sample. The system has a high-low temperature conversion function, is high in reliability,strong in operability and long in service life, and can reduce the dispersity of a surface flashover discharge test and improve the discharge stability and uniformity.

Description

technical field [0001] The invention relates to the technical field of vacuum discharge in a complex environment, in particular to a dielectric discharge system and a method for simulating a complex environment. Background technique [0002] The research on surface flashover in vacuum in the prior art is usually based on the abstracted model obtained from engineering practice. The effect of network characteristics, such as ambient air pressure, temperature, electrode structure, type of applied voltage, material and shape of insulators and other factors. After years of research, the current academic community generally believes that the vacuum surface flashover can be roughly divided into the following three stages: ①Initial stage-generation of initial electrons; ②Development stage-formation of electron multiplication; ③Flashover stage-formation of penetration gas discharge channels. Therefore, in view of the development mechanism of surface flashover in vacuum, the method ...

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Problems solved by technology

Relevant research data show that changing the temperature of the insulator or the electrode can affect the flashover performance of the vacuum insulation system, but the conclusions obtained in the relevant research literature at home and abroad have many contradictory places, and no further explanation is given.

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