Online diagnosis method and device for internal faults of sulfur hexafluoride electrical equipment
A technology of sulfur hexafluoride and electrical equipment, which is applied in the field of online diagnosis of internal faults of sulfur hexafluoride electrical equipment, which can solve the problem of poor timeliness and accuracy, and the inability to fully determine the development of latent fault types in equipment. stage and its severity
Pending Publication Date: 2020-06-05
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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[0005] This application provides an online diagnosis method and device for internal faults of sulfur hexafluoride electrical equipment, which can effectively solve the problem of poor timeliness and accuracy in the existing internal fault diagnosis methods of sulfur hexafluoride electrical equipment, which cannot fully determine the equipment The types of internal latent faults, what stage of development the fault is in and the technical defects of its harmful degree
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[0061] The following will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present application.
[0062] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the descr...
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The invention relates to the technical field of sulfur hexafluoride electrical equipment, in particular to an online diagnosis method and device for internal faults of sulfur hexafluoride electrical equipment. According to the method disclosed by the invention, the gas component data in the sulfur hexafluoride electrical equipment can be obtained in real time in the operation process of the sulfurhexafluoride electrical equipment. Through acquiring data of gas characteristic components such as sulfur oxide (fluoride) gas, whether a fault occurs in the sulfur hexafluoride electrical equipmentor not and the fault type of the fault are comprehensively, clearly and timely judged. The invention further provides an online monitoring device. The device comprises a first six-way valve, a first chromatographic column, a second six-way valve, a second chromatographic column, a third six-way valve, a detector, a quantitative tube, a carrier gas source, a gas purifier, a compression pump, a vacuum pump, a gas storage tank, a gas distributor and a calibration gas chamber. The device provided by the invention realizes automatic online monitoring and analysis of the sulfur hexafluoride electrical equipment insulating gas, and has the advantages of multiple measurable components, high sensitivity and stable and reliable performance.
Description
technical field [0001] The present application relates to the technical field of sulfur hexafluoride electrical equipment, in particular to an online diagnosis method and device for internal faults of sulfur hexafluoride electrical equipment. Background technique [0002] Sulfur hexafluoride (SF 6 ) Electrical equipment is the key equipment for UHV and modern urban power grids. With the rapid development of the power industry, the number of sulfur hexafluoride electrical equipment continues to increase, and the application area continues to expand. SF 6 Gas is an important insulating and arc-extinguishing medium in equipment. Under conditions such as arc, discharge, and high temperature, SF 6 The gas decomposes and reacts with moisture, oxygen, solid materials, etc. in electrical equipment to generate SO 2 、H 2 S, COS, SO 2 f 2 、SOF 2 、CS 2 A series of decomposition products. The detection of sulfur hexafluoride decomposition products, especially the joint detectio...
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IPC IPC(8): G01R31/12G01N30/02G01N30/46G01N30/60G01N30/20G01N30/30G01N30/64G01N30/86
CPCG01N30/02G01N30/20G01N30/30G01N30/46G01N30/6034G01N30/64G01N30/8631G01N30/8679G01N2030/201G01R31/1254G01R31/1263G01R31/1281
Inventor 李丽唐念周永言樊小鹏
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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