A comprehensive test platform and test method for transformer oil-paper insulation material

Abstract

The invention discloses a comprehensive test platform and a test method for transformer oil-paper insulation materials, including a main oil tank and an oil conservator; the middle parts of the left and right side plates of the main oil tank are respectively provided with oil flow valves facing each other, and the bottom is provided with oil filling and discharging valves; The oil conservator is a vertical cylinder, which is arranged above the side of the main oil tank, and its bottom is connected to the top of the main oil tank through a connecting pipe, and a pressure valve is arranged on the top, and a piston pad is arranged inside to isolate the oil surface and the air. A limit ring is arranged under the piston pad, and an air extraction valve is arranged at the limit ring. The invention can apply pressure to the oil through the oil conservator with piston structure, so as to study various electrical properties of the oil paper under different pressures; at the same time, it can also control the oil flow velocity in the box through the oil flow valve and an external oil pump, so as to study the effect of the flow velocity on the oil paper. The influence of electrical properties; By connecting the implanted heating device, the influence of temperature on the electrical properties of oil-paper was studied.

Description

technical field [0001] The invention relates to the technical field of oil-paper insulation experiments, in particular to an electric-voltage-flow-heat comprehensive test platform and a test method for oil-paper insulation materials of transformers. Background technique [0002] Oil-paper insulation is a key component of high-voltage electrical appliances such as transformers, and its insulation level is directly related to the safety and stability of UHV equipment and even power systems. [0003] There are many experimental devices for oil-paper insulation, but they often focus on one aspect, and the functions are not perfect. For example, if the device for measuring the partial discharge process cannot isolate the air, it cannot prevent the intrusion of water during the experiment, resulting in a certain degree of deviation in the experimental results. There are also devices that integrate several aspects, such as: a platform that integrates thermoelectric aging and mecha...

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Problems solved by technology

For example, if the device for measuring the partial discharge process cannot isolate the air, it cannot prevent the intrusion of water during the experiment, resulting in a certain degree of deviation in the experimental results

There are also devices that integrate several aspects, such as: a platform that integrates thermoelectric aging and mechanical vibration, without considering the two factors of flow and pressure, it is impossible to obtain more complete experimental results, and the adaptability is not strong

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