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Method and device for supplementing oil to electrified transformer sleeve pipe

A transformer bushing and oil replenishment device technology, which is applied to transformer/inductor parts, switchgear, circuits, etc., can solve the problems of high-altitude operation, cumbersome switching operation, and reduced insulation strength outside the bushing. Achieve high work safety and reliability, reduce the risk of total stop, and achieve good economic benefits

Active Publication Date: 2014-06-25
ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional transformer bushing must be powered off when oil is replenished. After the power failure, the oil replenishing personnel climb to the upper end of the bushing, carry the oil pot in hand, and rely on the gravity of the oil to replenish oil. This method has cumbersome switching operations and high-altitude operations are more dangerous. , the lack of low work efficiency
[0004] In addition, the ticking oil spots on the bushing during oil replenishment, although wiped in time, still have residual insulating oil covering the porcelain edge of the bushing. In light rain and heavy fog, the oily part of the bushing will generate serious discharge
If the discharge phenomenon occurs frequently and the operation lasts for a long time, the outer insulation strength of this part of the bushing will be reduced, and even a flashover will occur, causing a safety accident

Method used

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  • Method and device for supplementing oil to electrified transformer sleeve pipe
  • Method and device for supplementing oil to electrified transformer sleeve pipe

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Embodiment Construction

[0022] The specific embodiments of the present invention will be further described below in conjunction with the drawings:

[0023] see figure 1 , figure 2 , Is a schematic diagram of the structure of an embodiment of the replenishing device of the present invention. One end of the oil injection valve 1 is connected to the oil inlet A of the self-priming pump 2 through the oil inlet pipe 3, and the other end of the oil injection valve 1 is connected to the device inlet 4; oil injection valve 2 5 One end is connected to the outlet B of the self-priming pump 2 through the outlet pipe 6, and the other end of the oil injection valve 5 is connected to the outlet 7 of the device; the outlet 7 of the device communicates with the inlet pipe 3 through the oil return pipe 8 and the oil return pipe 8 An oil return valve 9 is provided. The oil outlet pipe 6 is connected to the inlet 4 of the device through an oil return pipe 10, and an oil return valve 11 is provided on the oil return pipe ...

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Abstract

The invention relates to the field of oil supplement of high-voltage sleeve pipes, in particular to a method and device for supplementing oil to an electrified transformer sleeve pipe. Electrified oil supplement is carried out on the top of a primary sleeve pipe and a secondary sleeve pipe of a transformer with the voltage level higher than 66kV by adopting an equipotential operation method. The method comprises the following specific operating steps that (1) the phase position of the sleeve pipe must be checked before the oil supplement to confirm the consistence with the emergency repair instructions send out by production scheduling, and the facts that the quality of oil in an oil supplementing barrel is qualified and the type of the oil in the oil supplementing barrel is identical with that of the oil inside the sleeve pipe are confirmed; (2) an insulation herringbone ladder is assembled on the ground; (3) after a potential electrician climbs to an operation site at the upper end of the sleeve pipe of the transformer along the herringbone ladder, a safety belt and a shielding potential equalizing wire are hung, sealing screws of the sleeve pipe are unfastened, and an oil filling pipe of the oil supplementing device is inserted into a sealing hole of the sleeve pipe. Compared with the prior art, the method and device for supplementing the oil to the electrified transformer sleeve pipe have the advantages that an equipotential mode of electrified operation is adopted, the blank in the technical aspect of the electrified oil supplement of the transformer sleeve pipes is filled, and good economic benefit and wide application prospects are achieved.

Description

Technical field [0001] The invention relates to the field of replenishing oil for high-voltage bushings in power plants and substations in power systems, and in particular to a method and device for replenishing oil for transformer bushings with electricity. Background technique [0002] Power transformers are the main operating equipment in power plants and substations. The primary and secondary bushings of the transformer are one of the important current-carrying components of the transformer and the main insulation device outside the transformer box. The lead wires of the transformer windings must pass through the insulating sleeve to insulate between the lead wires and between the lead wires and the transformer casing, and at the same time play the role of fixing the lead wires. According to the equipment condition maintenance test procedure and the electrical equipment preventive test procedure, the casing needs to be subjected to periodic oil-gas chromatographic analysis, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B3/00H01F27/00
Inventor 丁涛何忠伟张德伟刘伟张善于潇陈昱达胡绍刚刘君王玲姜兴业洪刚梁鞍何新雨韩智光薛涵今王晓东王枫沈宇李兴生魏庆峰
Owner ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY
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