External auxiliary gear-shifting device for main transformer on-load voltage regulation switch

Abstract

The invention relates to an external auxiliary gear-shifting device for a main transformer on-load voltage regulation switch. The device comprises a portable power generation box, a fixed frame, and a control box. The fixed frame comprises two connecting plates, two clamping boards, and a motor. A motor chassis is fixed on the two connecting plates, and the connecting plates are movably connected with the clamping boards through first adjusting bolts. Two sides of the clamping boards are provided with second adjusting bolts. The tail end of an output shaft of the motor is provided with a crank port mechanism. The control box comprises an adjusting button, an AC-DC power supply, a controller, and a driver. The adjusting button is connected with the controller, and the AC-DC power supply and the controller are respectively connected with the controller. The device is reasonable in structural design, is convenient to operate, and employs a portable power generation box, which is usually carried by a power worker, to cooperate with the motor with the output shaft structure being the crank port structure. The motor is disposed on the fixed frame, and is connected with the driver. An instruction is transmitted through a button to directly drive the motor to operate. The device replaces the slow manual operation, saves time and labor, and is higher in actual operation efficiency.

Description

technical field [0001] The invention relates to an electric power auxiliary device, in particular to an external auxiliary shifting device for an on-load voltage regulating switch of a main transformer. Background technique [0002] Generally, the on-load tap changer of the main transformer has multiple gears. For example, some main transformer on-load tap changers have 17 gears to ensure that the voltage can be adjusted by adjusting the gear when the voltage does not meet the system quality requirements. The voltage meets the system requirements, and when the DC resistance test of the main transformer is required, it is also necessary to perform the DC resistance test for each of these gears. [0003] In the existing testing technology, after the DC resistance test is completed for a certain gear position, remote control or on-site manual operation of the voltage regulating button on the on-load tap changer is used to adjust to the next gear position, and then Proceed to...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages of the prior art that electric power cannot be supplied normally and the efficiency of manual shifting is low, and to provide a time-saving, labor-saving, and high-efficiency man-machine operation of the main transformer on-load tap changer external auxiliary shifting device

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