Porcelain insulator detection method and porcelain insulator detection circuit

Abstract

The invention provides a porcelain insulator detection method and a porcelain insulator detection circuit, and the porcelain insulator detection method comprises the steps: S101, respectively transmitting an impact voltage to a normal porcelain insulator and a to-be-detected porcelain insulator through an impact voltage generator, and obtaining voltage change waveform data through a measurement loop; S102: according to the obtained voltage sequence and time sequence, obtaining the charge quantity of the normal porcelain insulator, the first equivalent charge quantity and the second equivalentcharge quantity of the to-be-detected porcelain insulator; and S103, judging whether the to-be-detected porcelain insulator is a deteriorated porcelain insulator or not according to whether the secondequivalent charge quantity is smaller than the product of the first equivalent charge quantity and a preset threshold value or not. The impulse voltage generator sends impulse voltage to the porcelain insulator, the short-time high voltage of the impulse voltage is used for breaking through internal defects of a porcelain part of the porcelain insulator and exposing internal insulation, the problem of missing detection of a deteriorated porcelain insulator is avoided, the pressurization time is short, the power is low, the energy consumption is low, and miniaturization and large-batch detection of detection equipment are facilitated.

Description

technical field [0001] The invention relates to the field of electrical equipment detection, in particular to a porcelain insulator detection method and a porcelain insulator detection circuit. Background technique [0002] Porcelain 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. They play a role in mechanical support and electrical insulation for transmission wires. Among all kinds of porcelain insulators, porcelain insulators are the most used porcelain insulators. Its remarkable advantage is that porcelain has good chemical stability, basically no aging phenomenon of porcelain materials, and good mechanical properties. It is compatible with electrical systems. The matching method is relatively simple. In addition, porcelain insulators are cost-effective, and they are also the most mature and experienced products in terms of ...

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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