Easy-to-implement transformer on-load capacity regulation switch

Abstract

The invention discloses an easy-to-implement transformer on-load capacity regulation switch, which includes a high-voltage coil switching system and a low-voltage coil switching system. A transition vacuum interrupter with transition resistance, the delta connection vacuum interrupter makes the high voltage coils in a delta connection when it is switched on, and the star connection vacuum interrupter makes the high voltage coils in a star connection when it is switched on. In the star-angle conversion process of the present invention, the transitional vacuum interrupter, the star-connected vacuum interrupter and the delta-connected vacuum interrupter only need to operate once, and each of them operates sequentially, and the action time of the transitional vacuum interrupter is not long. Limited by the action time of the other two vacuum interrupters, the action interval between each vacuum interrupter can be set according to the requirements of the arc extinguishing time; reliable extinguishing during the star-angle conversion process can be realized through a simple mechanical mechanism arc.

Description

technical field [0001] The invention belongs to the technical field of transformer equipment in the electric power industry, and in particular relates to a transformer on-load capacity regulating switch that is easy to realize. Background technique [0002] At present, in the method of performing star-angle conversion on the transformer without cutting off the power supply of the transformer, there is a device that uses a vacuum interrupter and a permanent magnet mechanism. Compared with the traditional device that uses a motor left and right drive mechanism, This device has the advantages of maintenance-free and long life. [0003] During the conversion process of the device from angle to star connection, the permanent magnet mechanism needs to perform an action, and during this action, the transitional vacuum interrupter completes the "close-off" action. The vacuum interrupter needs to complete the "close-open" action, and the star-connected vacuum interrupter needs to co...

AI Technical Summary

Problems solved by technology

[0003] During the conversion process of the device from angle to star connection, the permanent magnet mechanism needs to perform an action, and during this action, the transitional vacuum interrupter completes the "close-off" action. The vacuum interrupter needs to complete the "close-open" action, and the star-connected vacuum interrupter needs to complete the "open-close" work after the corner-connected vacuum interrupter is disconnected, that is, the transitional vacuum interrupter During the closing-opening action time of the arc chamber, delta connection and star connection need to complete the conversion sequentially, and the arc extinguishing of the delta connection vacuum interrupter needs a certain time after it is closed to disconnected; moreover, due to the permanent The action of the magnetic mechanism is very fast, and the time for one action is very short. When the corner vacuum interrupter does not have time to complete effective arc extinguishing in the future, the star connection interrupter needs to be closed. During the whole switching process, its arc extinguishing The effect is not ideal

Images