Experimental device and method for sf6 decomposition mechanism based on femtosecond laser-guided high-voltage discharge

Abstract

The invention provides an SF6 decomposition mechanism experimental device based on femtosecond laser guided high-voltage discharge. The device comprises a gas supply system, a laser conduction system,a gas reaction system and a data recording system, wherein the gas supply system comprises a gas storage tank and a gas supply pipeline; the laser conduction system comprises femtosecond laser, a prism, a lens and a beam collector; the gas reaction system comprises a discharge guide device and a gas reaction tank, and the discharge guide device comprises a high-voltage power supply, a high-voltage electrode pair, an adjustable current-limiting resistor and a wire; and the data recording system comprises a spherical lens, a spectrograph and an ICCD. Femtosecond laser guided high-voltage discharge is utilized to achieve time and space controllability of a discharge process, then the change rule of components and an SF6 decomposer generation mechanism of an SF6 plasma spectrum are studied byobtaining the SF6 plasma spectrum obtained after discharge, and dynamic detection of SF6 decomposers in the high-voltage discharge process is achieved.

Description

technical field [0001] The invention relates to a SF based on femtosecond laser guided high voltage discharge 6 A decomposition mechanism experimental device and method belong to the technical field of photoelectric detection. Background technique [0002] With SF 6 Gases are widely used as insulation and arc extinguishing medium for high voltage switches, SF 6 The decomposition mechanism of gas has attracted the attention of researchers. researchers on SF 6 The decomposition of the gas has been studied, and multiple partial discharges and an AC arc discharge have been generated below 20kV. The resulting decomposition products may be low-fluorine sulfides. SF 6 Under the action of electric discharge, the gas is easy to decompose and produce SF 4 , SF 2 and S 2 f 2 And many other low fluoride sulfides. If SF 6 The gas does not contain impurities, and the decomposed gas can be quickly recombined and reduced to SF 6 . But the actual running equipment in SF 6 The g...

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Problems solved by technology

But did not start from the field equipment operation management, did not get SF 6 The corresponding relationship between gas decomposition products and equipment failures, failed to propose the SF under various failure situations 6 The reaction model of gas and its characteristic decomposition products are difficult to realize the analysis of SF 6 Comprehensive evaluation and maintenance of the operating status of gas-insulated equipment, so more in-depth and comprehensive experimental research is required

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