Porcelain insulator internal insulation detection method and porcelain insulator detection circuit

Abstract

The invention provides a porcelain insulator internal insulation detection method and a porcelain insulator detection circuit, and the method comprises the steps: S101, transmitting an impact voltagethrough an impact voltage generator, and obtaining voltage change waveform data through a measurement loop; S102, acquiring a first voltage amplitude, a first attenuation time constant, a second voltage amplitude and a second attenuation time constant according to the voltage change waveform data; S103, acquiring the insulation resistance of the porcelain insulator to be detected according to thefirst attenuation time constant and the second attenuation time constant; and S104, judging whether the porcelain insulator to be detected is a deteriorated porcelain insulator or not according to thefirst voltage amplitude and the second voltage amplitude or the insulation resistance of the normal porcelain insulator and the insulation resistance of the porcelain insulator to be detected. The method is high in accuracy, can quickly detect the porcelain insulator with internal insulation degradation, is short in pressurization time, is low in power, is low in energy consumption, is simple injudgment logic, facilitates the integration, facilitates the miniaturization of detection equipment, and is wide in application range.

Description

technical field [0001] The invention relates to the detection field of porcelain insulators, in particular to a detection method for the inner insulation of a porcelain insulator and a detection circuit for a porcelain insulator. Background technique [0002] With the development of industry, electric power has increasingly become an important guarantee for industrial development. Reliable external insulation is indispensable in power transmission. Porcelain insulators are an important guarantee for reliable external insulation. Among porcelain insulators, porcelain insulators are one of the most widely used types. Porcelain insulators have low production cost, good weather resistance, and are not easy to age. They have significant application advantages, so they are widely used in transmission lines, and their forms are also various. , such as disc porcelain insulators, tension porcelain insulators, etc. [0003] However, porcelain insulators also have a significant disadv...

AI Technical Summary

Problems solved by technology

However, because the power frequency withstand voltage test requires professional equipment, the equipment is bulky, the single pressurization time is long, and there are few application places, it is not convenient for mass testing

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