Spectroscope type corona ultraviolet detector

Abstract

The invention discloses a spectroscope type corona ultraviolet detector. The spectroscope type corona ultraviolet detector comprises a telephoto lens, a spectroscope, an ultraviolet detector, an ultraviolet signal processing circuit, a liquid crystal display screen, an area array charge coupled device (CCD) and an image processing circuit. The telephoto lens and the area array CCD share the same optical axis, the spectroscope is arranged between the telephoto lens and the area array CCD, a 45-degree included angle is formed between a mirror face of the spectroscope and the optical axis of the ultraviolet detector, and the spectroscope 2 adopts a lens which can be transmitted by visible light of 380-760nm wave band so that ultraviolet light of 100-380nm wave band can be reflected. Light rays transmitting the telephoto lens are divided into two branches by the spectroscope, one branch is ultraviolet light, and the other branch is visible light. The ultraviolet is reflected on a photosensitive face of the ultraviolet detector through the spectroscope, and the other branch of the visible light emits on a photosensitive face of the area array CCD 6 after being transmitted by the spectroscope. The spectroscope type corona ultraviolet detector has the advantages that imaging display of a discharging insulator can be achieved, meanwhile, discharging ultraviolet radiation intensity can be displayed, and therefore the purpose of accurate positioning of a discharging position of the discharging insulator can be achieved.

Description

technical field [0001] The invention relates to a corona ultraviolet detector, in particular to a spectroscopic type corona ultraviolet detector. Background technique [0002] With the rapid development of my country's power grid scale, the problem of partial discharge faults in power equipment has become increasingly prominent. In the early stage of partial discharge fault, it generally manifests as corona discharge. Corona discharge refers to a self-sustained discharge phenomenon caused by partial ionization of surrounding gas (usually air) after the electric field strength near the electrode exceeds a certain value. Corona is a high-voltage pulse discharge, which will be accompanied by the generation of plasma during the discharge process. It will cause chemical reactions in the air, produce ozone and nitrogen oxide and other products, cause insulation corrosion and damage to electrical equipment, and cause serious accidents and power grid paralysis. [0003] The Interna...

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Problems solved by technology

[0005] However, due to the immature research on high-sensitivity solar-blind ultraviolet imaging devices in my country, and the high-performance foreign imaging devices are very expensive, our country is facing great difficulties in the practical research of corona ultraviolet imagers.

However, using unit (non-imaging) detection method to detect the intensity of corona ultraviolet radiation is a more suitable technology, the technical difficulty is relatively low, and the development cost of the instrument is much lower than that of the corona ultraviolet imager. However, many unit ultraviolet detection technologies currently Missing targeting system

If the unit detection technology lacks a special positioning system, the consequence is that it is impossible to judge which part of the insulator has corona discharge, or even which insulator has corona discharge.

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