Electrode device with flat structure for measuring oil flow electrification characteristics

Abstract

The invention provides a plate electrode device for measuring electric characteristics of oil flow. The device comprises an insulating shell and a metal aluminum electrode. An oil passage is formed in the insulating shell. Inwards-sunken grooves are formed on the end faces, where the inner sides of the oil passages are, of the insulating shell. The metal aluminum electrode comprises an upper electrode and a lower electrode. Each electrode comprises a main body and a column body which is extended upwards from the main body. Through grooves are filled with the column bodies of the metal aluminum electrode. The grooves are filled with the main bodies of the metal aluminum electrodes. An oil paper sample is positioned in the oil passage, and is fixed by oil paper fixing parts. The plate electrode of which the lower electrode is adjustable in height is embedded into the closed insulating shell, the position of the oil paper sample in the oil passage is adjusted by the oil paper fixing parts, and external accessories are matched, so that alternating current voltage, direct current voltage and alternating current-direct current voltage can be applied, an interval between the two electrodes is adjustable, the position of the oil paper sample in the oil passage is adjustable, and experimental researches on the electric characteristics of the oil flow of a transformer are diversified and targeted.

Description

【Technical field】 [0001] The invention belongs to a method for researching the insulation damage mechanism of large-scale electric equipment, and relates to an experimental device, in particular to an electrode system for researching the electrification characteristics of converter transformer oil flow. 【Background technique】 [0002] The construction of transmission network puts forward higher requirements for the manufacturing technology of transmission equipment. From the perspective of insulation structure, the main insulation structure design of ordinary power transformers is based on the small oil gap theory of thin cardboard. The role of cardboard is mainly to separate the oil gap, which basically does not have the ability to withstand voltage alone. The thickness of the paper tube is thin and the total amount is small. However, in the converter transformer, due to the existence of the DC electric field, more cardboard is required in the main insulation to bear most o...

AI Technical Summary

Problems solved by technology

At the same time, in order to match the cylinder-column electrode structure, the oil-paper cardboard sample needs to be processed into a cylinder shape, which increases the difficulty of sample preparation, and the position of the cardboard sample in the electrode cannot be changed

Moreover, the barrel-cylindrical electrode is also difficult to use to study the charging characteristics of oil flow in the multi-layer oil-paper structure

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