Sulfur hexafluoride decomposition gas detection device

Abstract

The invention relates to the technical field of decomposition gas detection, in particular to a sulfur hexafluoride decomposition gas detection device for detecting sulfur hexafluoride decomposition gas. In order to shorten detection time and improve detection result and detection sensitivity, the invention proposes the sulfur hexafluoride decomposition gas detection device. A light source drivingmodule is connected with a phase-locked circuit module and a detection light source, the light source driving module is used for driving the detection light source to emit out detection light beams with different wavelengths, a signal processing and control module is connected with an optical switch and is used for controlling the optical switch to switch at a fixed frequency and gate the detection light beams with different wavelengths to enter a long optical length air chamber so as to form an absorption signal, a photoelectric detector is used for detecting the absorption signal and transmitting the absorption signal to the phase-locked circuit module, and the phase-locked circuit module is used for absorbing the signal, performing inversion to calculate a concentration value of the decomposition gas in to-be-detected gas and transmitting the concentration value to the signal processing and control module. The sulfur hexafluoride decomposition gas detection device is short in detection time and high in detection result and detection sensitivity.

Description

technical field [0001] The present invention relates to sulfur hexafluoride (SF 6 ) Decomposition gas detection technical field, in particular to a detection device for detecting the decomposition gas of sulfur hexafluoride. Background technique [0002] Thanks to SF 6 Electrical equipment has good insulation and arc extinguishing medium characteristics, and has the advantages of safe and reliable operation, long maintenance cycle and small footprint, so it is widely used in power systems as power transmission and distribution equipment. SF 6 When an early latent insulation fault occurs inside electrical equipment, it is often accompanied by physical phenomena such as potential differences of different forms and intensities or local overheating, which makes SF 6 Different degrees of decomposition occur, and produce H 2 Various decomposition gases such as S, CO and HF are poisonous and corrosive gases, which pose a great threat to the life safety of power equipment and st...

AI Technical Summary

Problems solved by technology

Currently, in the SF 6 SF in electrical equipment 6 When the decomposition of gas is detected online, most of them are detected by gas chromatograph with manual sampling. The detection time is long, the maintenance workload is heavy, and the detection effect is not ideal.

Also, since SF 6 The decomposition gas produced by the decomposition has a low content in the insulating electrical, and the gas chromatograph cannot detect it quickly and sensitively.

Images