A temperature flow rate control device and test method for transformer oil insulation thermal aging test

Abstract

A temperature and flow speed control device used for a transformer oil insulation heat ageing test is used for cooperatively realizing quantitative research of transformer oil insulation heat ageing and comprises a cavity system and a pipeline system. The cavity system comprises a cavity, a sealing cover for sealing the cavity and an electrochemical monitoring instrument arranged in the cavity, wherein one oil inlet and at least two oil outlets are formed in the cavity, at least three openings are formed in the sealing cover, a temperature detector and a simulation heat source device are arranged in the openings, and the depths of the temperature detector and the simulation heat source device are controllable. The pipeline system comprises a pipeline, an oil pump, an oil heater and a confluence device, wherein the pipeline an oil inlet pipeline leading to the oil inlet and oil outlet passages connected to the oil outlets, the oil inlet pipeline is provided with the oil heater and the oil pump, and the oil outlet passages are gathered through the confluence device and then connected to the oil inlet pipeline again. The temperature and flow speed control device used for the transformer oil insulation heat ageing test can cooperatively realize quantitative research of transformer oil insulation heat ageing, provide feedback for qualitative research and improve the accuracy of qualitative research.

Description

technical field [0001] The invention belongs to the field of on-line insulation monitoring of electrical equipment, in particular to the insulation performance detection and test in the aging process of transformer oil, and in particular to a temperature flow rate control device and a test method for the thermal aging test of transformer oil insulation. Background technique [0002] The insulation performance of transformer oil during the aging process, including resistivity, dielectric constant, breakdown field strength, etc., has long been concerned by the academic and engineering circles, especially the real-time detection and quantitative analysis of the insulation performance changes during the aging process of transformer oil There is a lack of effective technology and test equipment. At the same time, the lack of such test equipment also hinders the in-depth analysis and research on the thermal aging mechanism of transformer oil insulation in the academic circle. [...

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Problems solved by technology

However, this device and method are first aimed at insulating oil paper, and secondly, the oil temperature in the device is equal or equal everywhere, and the experimental needs of occasions such as oil temperature gradient changes cannot be realized.

[0005] It can be seen that the existing technology lacks effective technical means and test devices capable of real-time detection and quantitative analysis of insulation performance changes during the aging process of transformer oil.

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