Digital high voltage multifunctional insulator testing equipment

Abstract

The invention discloses a digital high-voltage multifunctional insulator detection device, which can detect the insulation performance of insulators in the state of power failure and electrification; the device of the invention includes: RMS conversion module [1], digital high-voltage DC power supply module [2] ], signal conditioning unit [3], single-chip microcomputer system [4]. When the power is off, the high-voltage power supply of the present invention adopts digital control, and the output voltage is continuously adjustable. The relationship between the voltage and the output voltage is controlled by the single-chip microcomputer. During the measurement process, the single-chip microcomputer can adjust the output voltage through feedback, which improves the measurement accuracy; The tested insulators in the charged state pass through the RMS conversion module to collect the voltage distribution at both ends of each insulator under the power frequency voltage, and judge the insulation state of the insulators according to the voltage distribution law of the insulators. The selection of the equipment module in the two states can be controlled by the switching switch. The invention has the advantages of wide application range, high precision and convenient portability.

Description

technical field [0001] The invention relates to the field of electric power safety, in particular to a method and a device for detecting the insulation performance of an insulator. Background technique [0002] At present, most of the insulators used in my country's power grid are ceramic insulators. The new insulators have better insulation performance, but with the operation of transmission lines, the insulators will gradually age, the insulation resistance of the insulators will become smaller, and the insulation performance will decrease, becoming low-value insulators or Zero value insulators. The main causes of low-value insulators are: 1. The insulator is degraded. The insulator has been subjected to the electric field, the gravitational load of the line, and the action of nature, sunlight, rain, and snow for a long time. The insulation performance of insulators will be reduced; if the degree of low-value insulators becomes more serious or lightning breaks down the ins...

AI Technical Summary

Problems solved by technology

Compared with other detection methods, the ultraviolet imager has the advantages of intuitive observation, good predictability, and long observation distance. However, because the ultraviolet imager is expensive and can only observe strong discharge signals, it can only be used to detect Corona, partial discharge and arc-based

[0009] It can be seen that there are certain defects in the above methods, such as inconvenient operation, low measurement accuracy or high cost.

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