Composite insulator ultra-wideband radio-frequency sensing intelligent armour clamp and using method thereof

Abstract

The invention provides a composite insulator ultra-wideband radio-frequency sensing intelligent armour clamp and a using method thereof. The method comprises the following steps that: a first armour clamp and a second armour clamp that are arranged at two ends of a composite insulator respectively are provided, an ultra-wideband signal transmitter and four first radio-frequency probes are arrangedin the first armour clamp, and an ultra-wideband signal receiver and four second radio-frequency probes are arranged in the second armour clamp; the first radio-frequency probes are fed by the ultra-wideband signal transmitter to excite a radio-frequency microwave in an HE11 mode; the second radio-frequency probes collect a transmitted radio-frequency micro-wave signal, the ultra-wideband signalreceiver processes the radio-frequency micro-wave signal and transmits the processed radio-frequency micro-wave signal to a remote server, and then the remote server carries out background analysis onthe processed radio-frequency micro-wave signal to determine whether a defect exists in the composite insulator. With the provided using method, whether a defect exists in the composite insulator canbe diagnosed accurately.

Description

technical field [0001] The invention relates to the field of power equipment operation state maintenance, in particular to a composite insulator ultra-broadband radio frequency sensing intelligent fitting and a method for using the same. Background technique [0002] Composite insulators make up for the shortcomings of porcelain and glass insulators due to their light weight, high strength, strong pollution flashover resistance, and convenient manufacturing and maintenance. They are more and more widely used in power grids. At present, the number of composite insulators used in the national power grid is as high as several million, and the longest running time has exceeded 20 years. The main component of the composite insulator sheath is silicone rubber. When exposed to the outdoor environment for a long time, the silicone rubber is subjected to physical and chemical effects such as sun, rain, high temperature, severe cold, sand erosion, acid corrosion, and strong electric f...

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Problems solved by technology

Contact detection operations need to go to the site to measure one by one, even climbing poles and towers, which is labor-intensive, inefficient and highly dangerous

Non-contact detection methods such as the laser Doppler method can detect cracked composite insulators, but they do not work on uncracked composite insulators, and the equipment is bulky, so it is not suitable for field operations; the acoustic pulse method is due to coupling, attenuation and ultrasonic transducer Performance issues At present, there has not been a major breakthrough in long-distance telemetry, and it is not suitable for on-site inspection, but mainly used for on-line inspection and laboratory identification of enterprise production; when the ultraviolet imaging method is used for detection, partial discharge of the insulator is required, and it is required to be tested at normal temperature and high temperature. It is carried out in a humidity environment, and the detection equipment is expensive and has a single function, and the detection results are easily affected by the viewing angle

The currently widely used non-contact detection technology is the infrared thermal imaging detection method, which can detect the local temperature rise of the insulator caused by partial discharge, dielectric loss or resistance loss when the leakage current flows through the insulating material. High, but the temperature is easily affected by sunlight, strong wind, moisture, ambient temperature and some factors that can cause rapid changes in the surface temperature of the insulator; while the infrared thermal imaging detection method has hidden defects such as interface air gaps and internal cracks for composite insulators The detection effect is obviously not as good as the detection effect of the continuity defect

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