A charging degree simulation test device for oil paper of strong oil air-cooled transformer
A technology for simulating testing and transformer oil, applied in measuring devices, instruments, measuring electrical variables, etc., it can solve the problems of charge retention at the transformer interface and no simulated on-site operating conditions.
Active Publication Date: 2018-11-09
JIANGXI UNIV OF SCI & TECH
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The research on the test method of the transformer interface charge only stays in the laboratory research stage, and in addition, the field operation conditions are not simulated in the laboratory
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0031] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguis...
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The embodiment of the invention provides a charging tendency simulation testing device for forced-oil air-cooled transformer oil paper, and belongs to the technical field of signal monitoring. The charging tendency simulation testing device comprises an electrizing device and a charge measuring device; the electrizing device comprises a centrifugal speed regulating motor, a rotation disc, an oil tank containing transformer oil and a first support used for fixing the oil tank, the centrifugal speed regulating motor is connected to the rotation disc, the rotation disc is fixedly connected with the first support, and an oil draining valve is arranged at the bottom of the oil tank; the charge measuring device comprises a surface potentiometer and a second support used for fixing the surface potentiometer, and the surface potentiometer is arranged at the end, close to the oil tank, of the electrizing device and connected with a computing terminal used for processing test data measured by the surface potentiometer. According to the charging tendency simulation testing device for the forced-oil air-cooled transformer oil paper, the real running condition of a transformer can be simulated, the accuracy and the validity of testing and analyzing on the charging tendency of the oil paper interface are improved, and then whether the charged oil paper arranged in the transformer oil tank affects safe running of the transformer or not is judged.
Description
technical field [0001] The invention relates to the technical field of signal monitoring, in particular to a charging degree simulation test device for oil paper of a strong oil air-cooled transformer. Background technique [0002] The forced oil air cooling method is a commonly used cooling method for EHV transformers. After contact and friction between the high-speed oil flow and the oil paper, static electricity will be generated on the surface of the oil paper and in the oil. Static electricity is the main cause of damage to the insulating parts of the ultra-high voltage transformer. In order to save manufacturing costs, power transformer manufacturers are constantly optimizing the design structure of transformers. In order to reduce the size of the ultra-high voltage transformer, the flow rate of the transformer oil flow is usually increased to accelerate the heat dissipation of the transformer, thereby reducing the heat dissipation area. However, the increase of the ...
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IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 刘道生王仕会刘飞飞刘黎明刘宁
Owner JIANGXI UNIV OF SCI & TECH