Device and method for measuring temperature rise of transformer oil tank outgoing line structure

Abstract

The invention provides a device for measuring the temperature rise of an outgoing line structure of a transformer oil tank, belongs to the technical field of transformers, and particularly relates toa temperature rise experiment device. The device for measuring the temperature rise of the outgoing line structure of the transformer oil tank is characterized in that the device comprises a tank bodycontaining insulating oil, the wire outlet structure, an electric heating device and a temperature measuring device, an oil injection and discharge pipe is arranged at the bottom of the tank body, and at least two wire outlets are formed in the outer wall of the tank body; the wire outlet structure is detachably connected to any wire outlet, the other wire outlets are sealed through sealing plates, the electric heating device is fixed in the box body and used for heating the insulating oil, and the temperature measuring end of the temperature measuring device is placed in the box body and used for detecting the temperature of the insulating oil. The device for measuring the temperature rise of the wire outlet structure of the transformer oil tank simulates the transformer oil tank and different wire outlet structures, performs temperature rise test, measures the temperature rise, judges the reasonability of the wire outlet mechanism, is easy to produce, low in cost and simple and feasible to operate, and saves the test time.

Description

technical field [0001] The invention belongs to the technical field of transformers, and more specifically relates to a device and method for measuring the temperature rise of a transformer oil tank outlet structure. Background technique [0002] The transformer is an important equipment for transmitting electric energy. The outlet structure of the transformer oil tank is the structure in which the current-carrying lead wire enters and exits the local oil tank of the transformer. The temperature of the outlet structure of the oil tank rises. Once the design of the outlet structure of the oil tank is unreasonable, it will lead to local overheating, which will affect the stable operation of the transformer. The temperature rise index during the operation of the outlet structure of the transformer oil tank is a very important performance index. There are many factors that affect the temperature rise, mainly including the lead current, the diameter of the opening at the outlet, ...

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Problems solved by technology

[0002] The transformer is an important equipment for transmitting electric energy. The outlet structure of the transformer oil tank is the structure in which the current-carrying lead wire enters and exits the local oil tank of the transformer. The temperature of the outlet structure of the oil tank rises. Once the design of the outlet structure of the oil tank is unreasonable, it will lead to local overheating, which will affect the stable operation of the transformer.

The temperature rise index during the operation of the outlet structure of the transformer oil tank is a very important performance index. There are many factors that affect the temperature rise, mainly including the lead current, the diameter of the opening at the outlet, the thickness of the steel plate, the center distance of the outlet opening, the material of the steel plate and the insulation. There are several items of oil temperature. At present, according to the performance of the transformer and the actual application environment, the outlet structure of the transformer oil tank is various. Generally, the temperature rise test will be carried out on the actual transformer to detect the performance indicators. The test process will take up more production time and test costs. In addition, once it is detected that the transformer outlet structure is unreasonable, the correction cost is relatively high

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