Insulator online detection device and system

Abstract

The invention discloses an insulator on-line detection device which comprises a shell, a connecting device, an output device, a main switch and a trigger switch. The connecting device comprises a first connecting part and a second connecting part; a high-voltage generator, a DC / DC boosted circuit, a power supply, an operation control circuit, a high-voltage high-speed acquisition circuit and an output control circuit are arranged in the shell; the power supply is electrically connected with the operation control circuit, and the trigger switch is connected with a first input end of the operation control circuit; the first output end of the operation control circuit is connected with the DC / DC boosted circuit; the DC / DC boosted circuit is connected with the high-voltage generator, the firstoutput end of the high-voltage generator is connected with the connecting device, the second output end of the high-voltage generator is connected with the high-voltage high-speed acquisition circuit, and the high-voltage high-speed acquisition circuit is connected with the second input end of the operation control circuit; and the second output end of the operation control circuit is connected with the output control circuit, and the output control circuit is connected with the output device.

Description

technical field [0001] The invention relates to the field of high-voltage insulation detection, in particular to an on-line detection device and system for insulators. Background technique [0002] Insulators are important equipment components of power transmission and transformation systems. They are widely used in power grid systems such as high-voltage transmission lines and substations. There are big differences, but they are all composed of two parts: insulating parts and connecting fittings. [0003] For porcelain insulators, there are many reasons that will lead to the decline of the mechanical properties of the insulator and the loss of insulation capacity, which is called the deterioration of porcelain insulators. For example, porcelain insulators may deteriorate during production, transportation, installation, and operation. During production, insulators have defects such as micro-pores, micro-cracks, gaps caused by inconsistent shrinkage coefficients of connecto...

AI Technical Summary

Problems solved by technology

During production, insulators have defects such as micropores, microcracks, and gaps caused by inconsistent shrinkage coefficients between the connector and the ceramic material during the manufacturing process.

In the process of transportation and installation, defects in the head of porcelain parts will also be caused by collisions and other reasons

After being put into operation, due to the poor tensile properties of the porcelain insulator itself, the pores and cracks inside the porcelain will expand and cause deterioration during long-term operation

The insulators on the tower are exposed to humid air for a long time, and they are easy to be covered with dust, and the performance of the long-term use is reduced. In order to eliminate the deteriorated insulators and ensure the safe and reliable operation of the power grid, it is necessary to propose accurate and effective detection methods for deteriorated porcelain insulators

[0004]Traditional testing equipment, such as shakers, internal generators and other equipment, because the equipment is too bulky and the wire wiring is complicated, the operation of this equipment generally requires multiple people Carry out, carry out special person to shake the watch and special person to test

Obviously, the traditional detection method is laborious and laborious, and requires the inspector to manually shake the meter to achieve the required test voltage, which is very unsuitable for working at heights on the tower

In recent years, with the development of various zero-value insulator detection devices, many of them are small in size and fast in detection speed, and are gradually used in the field of defect detection of power grid equipment, such as infrared detection, ultraviolet detection, ultrasonic detection, etc., but these The method is to reflect the internal or external defects of the insulator from the side, and cannot directly and quickly reflect the electrical properties of the insulator, but to infer whether the insulator is degraded by combining the structure of infrared imaging, the results of ultraviolet detection or the results of ultrasonic defect detection. The probability of false detection and missed detection is extremely high, and the detection results are easily affected by the pollution of the outer surface of the insulator and the environmental sound and light noise, so the use effect is not good

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