An accelerated electric corrosion test device for iron caps of DC porcelain insulators

Abstract

The invention relates to an accelerated electrocorrosion test device of a direct-current porcelain insulator iron cap. The accelerated corrosion test device comprises a direct-current power supply system, a sample suspension system, a liquid environment simulation system, a video monitoring system, a leakage current measuring system and a drainage system, wherein the direct-current power supply system supplies a reliable and stable direct-current test voltage; the sample suspension system meets the requirement that six paths of sample insulators perform the accelerated electrocorrosion test under different suspension ways; the liquid environment simulation system can provide a test liquid environment; the video monitoring system can track and record the entire image of the sample insulators; the leakage current measuring system can monitor the six paths of sample insulators in real time, and a signal processing device can accumulate the leaked electric quantity of each path of sample insulator; and the drainage system can process and recycle a test water solution. The accelerated electrocorrosion test device has the advantages of simple operation and strong practicality and can be widely applied to the test research of electrocorrosion of the direct-current porcelain insulator iron cap, and the equivalence of the test result with the actual situation of a scene is high.

Description

technical field [0001] The invention is an accelerated electric corrosion test device for an iron cap of a DC porcelain insulator, which belongs to the transformation technology of the accelerated electric corrosion test device for an iron cap of a DC porcelain insulator. Background technique [0002] my country has a vast territory, rich water energy and coal resources, relatively poor oil and gas resources, and the distribution of power generation energy resources and power load distribution is extremely uneven. On the one hand, nearly 2 / 3 of the country's developable hydropower resources are distributed in the three provinces of Sichuan, Yunnan, and Tibet in the west, and 2 / 3 of the retained coal reserves are distributed in the three provinces of Shanxi, Shaanxi, and Inner Mongolia; on the other hand, the eastern coastal and The area east of the Beijing-Guangzhou Railway is economically developed, and the electricity load accounts for about 2 / 3 of the country's total, but...

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Problems solved by technology

[0004] At home and abroad, the corrosion problems of porcelain insulators and metal fittings are basically concentrated on the corrosion of steel feet. However, most of the early high-voltage DC line insulators adopt the I-string suspension method, and iron cap corrosion is rarely found, and the surface of the iron cap has a galvanized layer, which can inhibit the electrochemical reaction of the environment. Corrosion. In the past, it was considered that the problem of electric corrosion of iron caps was not serious, and so far there has been no report on the study of its electric corrosion problem.

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