Experimental platform and method for research on the relationship between overheating of insulating oil and gas production rate in power transformers
A technology for power transformers and internal insulation, applied in instruments, analytical materials, etc., can solve problems such as inability to determine faults
Active Publication Date: 2014-10-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology
[0003] For some equipment, the gas content exceeds the warning value due to some reasons, and the fault cannot be determined; although some equipment is lower than the warning value, if the content increases rapidly, attention should also be drawn
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Embodiment Construction
[0016] Further illustrate the present invention below in conjunction with accompanying drawing.
[0017] figure 1 It is a schematic diagram of the circuit of the present invention. In the figure, AC-high voltage power supply; T1-voltage regulator; T2---YDT-5 / 50 power frequency test transformer; R1-protective resistor; R2-heating resistor; A-ammeter. figure 2 is the schematic diagram of gas collection. image 3 It is a structural diagram of the present invention, as shown in the figure, an experimental platform for researching the relationship between the overheating of insulating oil inside a power transformer and the gas production rate, and the experimental platform includes:
[0018] AC—high voltage power supply; LDS-6 digital partial discharge tester, T1---HY-AC20-1 type electric voltage regulator, T2---YDT-5 / 50 power frequency test transformer, protection resistor R 1 , ammeter, R 2 heating resistor.
[0019] The AC power supply is connected to the electric voltage ...
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The invention discloses an experiment platform and a method of a research of relationship between power transformer internal insulating oil overheating and gas production rate and belongs to the technical field of power transformer devices. The platform comprises a protective resistor R1 (4), an experimental object (6) and the like. Voltage is adjusted through a power frequency testing transformer (3), the experimental object is formed by the steps that a heating resistor is immersed into a glass ware fulfilled with insulating oil, a guide line penetrates through the glass ware to be connected with the heating resistor, and a rubber pipe can be inserted into a glass hole in a glass cap on the top of the glass ware to guide gas out. Transformer oil is injected into the experimental object, the voltages is adjusted, and temperature of the insulating oil in the experiment, current amplitude data and relationship of the temperature and amount of produced gas are obtained. Quantitative analysis is conducted on change of the gas production rate when oil temperature is excessively high. Whether insulation aging or failure high temperature overheating of the transformer is produced can be known according to the gas production rate, and therefore appropriate improvement can be conducted on the transformer, approximate location of faults of the transformer can be predicted in advance, and examining and repairing time of the transformer is saved.
Description
technical field [0001] The invention discloses an experimental platform and method for researching the relationship between the overheating of insulating oil inside a power transformer and the gas production rate, and belongs to the technical field of power transformer equipment. Background technique [0002] Modern power systems are becoming more and more complex, and the requirements for the reliability of power equipment operation are constantly increasing. As an important substation equipment in the power system, the power transformer's operation status will directly affect the safe operation of the power system. At present, most of the power equipment such as transformers in the power system adopts the regular maintenance method. There are serious defects in this system, such as insufficient maintenance, excessive maintenance or blind maintenance, which makes countries around the world spend a lot of money on equipment maintenance every year and affects the reliability ...
Claims
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IPC IPC(8): G01N7/14
Inventor 郑重郭亮刘少宇卢毅谢丽芳
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)