Vacuum arc-extinguishing-chamber burn-in device of direct-current superposed high voltage pulse and method thereof

Abstract

The invention discloses a vacuum arc-extinguishing-chamber burn-in device of a direct-current superposed high voltage pulse and a method thereof. The device comprises a direct current power supply, a pulse power supply, a vacuum arc-extinguishing chamber, a blocking coupling capacitor and an isolation inductor. One end of the direct current power supply and one end of the pulse power supply are connected to one end of a vacuum arc-extinguishing chamber contact. The other end of the direct current power supply is connected to one end of the isolation inductor. The other end of the pulse power supply is connected to one end of the blocking coupling capacitor. The other end of the blocking coupling capacitor and the other end of the isolation inductor are connected to the other end of the vacuum arc-extinguishing chamber contact. By using the device and the method, technology difficulty is small, cost is low, and simultaneously single burn-in energy can realize accurate adjusting.

Description

technical field [0001] The invention belongs to the technical field of vacuum interrupter aging, and relates to a vacuum interrupter aging device and method with DC superimposed high-voltage pulses. Background technique [0002] As an important link in the production process of vacuum interrupter, aging has been widely used in the field of electric vacuum. The traditional aging techniques used in vacuum interrupters are mainly current aging and spark aging. Among them, the current aging is to use the ablation effect of the arc to remove the insulation weaknesses such as gas, oxides, and micro-protrusions on the electrode surface, which is beneficial to suppress the breakdown of the vacuum gap after the arc, thereby improving the high-current breaking capacity of the vacuum interrupter. , but it has no obvious effect on the improvement of vacuum gap insulation withstand voltage level. [0003] Spark aging is to apply a high voltage to the vacuum interrupter under static con...

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Problems solved by technology

[0005] To sum up, the current aging technology has the following main problems: current and voltage aging effects cannot be effectively combined; a single power supply provides breakdown voltage and aging energy, which is technically difficult and costly, and at the same time, a single aging energy cannot Precise adjustment makes it difficult to effectively control the aging degree, trend and aging consistency

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