Rapid reversing device and method for on-load tap changer based on hydraulic transmission
A technology of on-load tapping and hydraulic transmission, which is applied in high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., can solve problems such as collisions, achieve the effects of reducing collision force, switching stability, and improving dynamic performance
Active Publication Date: 2022-05-20
XI AN JIAOTONG UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and propose a quick reversing device and method for on-load tap-changers based on hydraulic transmission, so as to solve the problem of collision and insufficient energy storage caused by the switching device to the system in the prior art problem, improve system stability
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[0028] In order to make the technical means of the present invention clearer, to the extent that those skilled in the art can implement it according to the contents of the description, and to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following Specific embodiments of the present invention are illustrated.
[0029] Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0030] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to...
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The invention provides a quick reversing device and method for an on-load tap changer based on hydraulic transmission, including auxiliary components, an airbag accumulator and a rack and pinion hydraulic swing cylinder; wherein the auxiliary components include an oil tank and three One-position four-way solenoid valve, the fuel tank is connected to the three-position four-way solenoid valve through the overflow valve, and the three-position four-way solenoid valve is connected to the air bag type accumulator and the rack and pinion hydraulic swing cylinder. The rack-and-pinion hydraulic swing cylinder is driven to realize the reversing action through the energy storage and energy release of the airbag accumulator. The present invention stores energy, releases energy, and realizes quick direction change by way of hydraulic transmission. Compared with existing devices, it has the advantages of stable switching, stable speed, flexible arrangement of components, and accurate positioning.
Description
technical field [0001] The invention relates to the fields of engineering machinery and electric power systems, in particular to a quick reversing device and method for on-load tap changers based on hydraulic transmission. Background technique [0002] The on-load tap-changer is the core component of the UHV converter. It is a switching device to ensure that the transformer does not cut off the current during voltage regulation. It can ensure that the transformer realizes on-load voltage regulation. Its basic principle is to ensure Without interrupting the load current, the switch between the taps in the transformer winding is realized, thereby changing the number of turns of the winding, that is, changing the voltage ratio of the transformer, and finally realizing the purpose of voltage regulation. However, during the tap switching process in the transformer winding, an arc phenomenon will occur, and during the tap switching process, a backflow phenomenon will occur in the ...
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IPC IPC(8): H01H9/00H01H33/34
CPCH01H33/34H01H9/0027
Inventor 林起崟魏方岩庄健洪军张进华
Owner XI AN JIAOTONG UNIV