Sulfur hexafluoride electrical equipment hydrogen detector and its application method

Abstract

The invention relates to a sulfur hexafluoride electrical equipment hydrogen detector which is characterized by comprising an air channel with an air inlet and an air outlet. The air channel is provided with a needle valve near the air inlet; the air channel behind the needle valve is provided with an H2 sensor and a flow sensor; the output end of the H2 sensor and the output end of the flow sensor sequentially pass through a signal conditioning circuit and an A / D converter, and are then connected with a microprocessor; and the microprocessor is connected with an LCD and a data storage unit. According to the invention, the early fault information related to polyester ethylene, insulation paper and epoxy resin decomposition in the SF6 electrical equipment can be fast and accurately obtained, so as to provide a scientific basis for the fault diagnosis and for the equipment condition-based maintenance.

Description

technical field [0001] The patent of the present invention relates to an electrical equipment detection instrument, which is a hydrogen gas detector and a method of use that reflect the cracking characteristics of solid insulating materials inside sulfur hexafluoride electrical equipment. Background technique [0002] Sulfur hexafluoride (SF 6 ) gas has excellent chemical stability and electrical properties. Therefore, it has been widely used in electrical equipment since the 1980s, and has played a very good role in the safe and economical operation of the power system. However, there are still some deficiencies in solid insulation materials, manufacturing, installation, testing methods and maintenance processes in electrical equipment. Although the products are inspected according to the requirements of the regulations when they leave the factory and put into use, it is difficult to detect local insulation defects due to the current detection methods. , so it is inevitabl...

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Problems solved by technology

However, there are still some deficiencies in solid insulation materials, manufacturing, installation, testing methods and maintenance processes in electrical equipment. Although the products are inspected according to the requirements of the regulations when they leave the factory and put into use, it is difficult to detect local insulation defects due to the current detection methods. , so it is inevitable that some defects will be brought into the operating equipment. Under the action of heat and electricity during operation, these defects will continue to develop. Since the electrical insulation equipment is sealed during use, it is difficult for the outside world to know the faults inside in time, causing Accidents that bring significant economic losses and adverse effects to society

Although there are decomposition product detectors at present, due to the generation of these SO 2 、H 2 The temperature of S is above 400°C, and the hidden danger of low temperature overheating cannot be detected early. Although the detection of CO content can reflect the low temperature overheating of polyethylene and insulating paper, it is still not perfect

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