Electrical equipment insulation state monitoring system and method based on gas components
A technology of insulation status and power equipment, applied in the direction of measuring devices, analyzing materials, testing dielectric strength, etc., can solve the problems of unreasonable design structure, poor sensor performance, inaccurate detection, etc., and achieve strong anti-electromagnetic interference ability and easy Realize and improve the effect of accuracy
Pending Publication Date: 2022-01-11
XIAN UNIV OF TECH
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[0005] The object of the present invention is to provide a system and method for monitoring the insulation state of power equipment based on gas components, using chlorophyll as a gas-sensitive probe material to detect SF 6 gas decomposition components, improving the SF 6 The accuracy of the measurement of gas decomposition components can finally realize the monitoring of the insulation state of power equipment, and solve the problem of unreasonable design structure of the existing monitoring system, poor sensor performance, and inability to accurately detect SF 6 Gas decomposition components, poor anti-interference ability and other problems
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[0029] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0030] see figure 1 , which discloses a schematic structural diagram of a gas component-based power equipment insulation state monitoring system according to a specific embodiment of the present invention. The gas component-based power device insulation state monitoring system of the present invention includes: a micro gas sensor 1, a signal processing module 2 and a signal monitoring module 3 . Wherein: the micro gas sensor adopts a submicron thin film micro gas sensor, which adopts chlorophyll as the gas sensitive probe array material, and reflects the content of SF6 gas decomposition components by generating a weak electric signal, and this micro gas sensor can Accurate detection of SF 6 Gas breaks down components, improving detection of SF 6 The accuracy rate of gas decomposition compo...
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The invention provides an electrical equipment insulation state monitoring system and method based on gas components. The electrical equipment insulation state monitoring system comprises a micro gas sensor, a signal processing module and a signal monitoring module; the micro gas sensor is used for collecting the concentration of SF6 gas decomposed components, converting the concentration into a current signal and outputting the current signal to the signal processing module; a gas-sensitive probe in the micro gas sensor is made of chlorophyll; the signal processing module is used for performing analog-to-digital conversion, amplification and digital filtering on the received current signal to obtain a processed digital signal, and then outputting the digital signal to the signal monitoring module; and the signal monitoring module is used for processing and analyzing the received digital signal by using a support vector machine algorithm to obtain a characteristic parameter representing the insulation state of the high-voltage power equipment, and displaying the characteristic parameter through a visual interface. According to the invention, chlorophyll is used as a gas sensitive material, so that the accuracy of measurement of SF6 gas decomposition components is improved.
Description
technical field [0001] The invention relates to the field of fault diagnosis and state monitoring of power equipment, in particular to a system and method for monitoring the insulation state of power equipment based on gas components. Background technique [0002] SF 6 The gas has high dielectric strength, which can guarantee the high-voltage SF in normal operation 6 Power equipment has a sufficiently high compressive strength without breakdown; in addition, high-voltage SF 6 Power equipment (such as circuit breakers) must undergo a process of recovery of dielectric strength when breaking short-circuit currents. If the after-arc SF 6 If the dielectric insulation strength is higher than the recovery voltage at both ends of the contact, it can ensure that the arc will not re-ignite and the short-circuit current will be successfully interrupted. Therefore, SF 6 The insulation breakdown characteristics of the gas at room temperature and the insulation breakdown characteristi...
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Login to View More IPC IPC(8): G01R31/12G01N27/00
CPCG01R31/12G01N27/00
Inventor 付钰伟陈驰杨磊王闯张在秦
Owner XIAN UNIV OF TECH