Looped network type combined transformer

Abstract

The invention discloses a looped network type combined transformer which comprises a power supply loop 1, a power supply loop 2 and a transformer loop, the power supply loop 1, the power supply loop 2 and the transformer loop are connected in sequence, the power supply loop 1 is provided with a first load switch S1, the power supply loop 2 is provided with a second load switch S2, and the transformer loop is provided with a third load switch S3. According to the looped network type combined transformer, the three two-station load switches are adopted to replace a four-station load switch in a conventional looped network type combined transformer, various wiring functions can be achieved through free combination of the three two-station load switches, and the switching process of the whole circuit is free and convenient; and the stability of the power supply system can be ensured, and the power failure phenomenon of the transformer or the looped network power supply system is avoided.

Description

technical field [0001] The invention belongs to the technical field of transformer equipment, and in particular relates to a ring network type combined transformer. Background technique [0002] Such as figure 1 As shown, the high-voltage main circuit of the conventional ring network combined transformer uses a four-position load switch S to realize four wiring schemes, where A represents power circuit 1, B represents power circuit 2, and T represents the transformer: [0003] 1) A-T: Power loop 1 supplies power to the transformer alone, and power loop 2 is open; [0004] 2) A+B-T: Power loop 1 and power loop 2 supply power to the transformer together, or power loop 1 supplies power to the transformer while forming a ring network power supply system with power loop 2 (or power loop 2 supplies power to the transformer and power loop 1 at the same time form a ring network power supply system); [0005] 3) B-T: Power loop 2 supplies power to the transformer alone, and power ...

AI Technical Summary

Problems solved by technology

[0007] The conventional ring network combined transformer can easily realize the conversion of the four wiring functions through the conversion of the four-position load switch S, but there is a biggest problem in this conversion method: the four-position load switch S is converted from one wiring When the connection method is switched to another connection method, there must be a short switching time between the two connection methods. power status, affecting the entire power supply system

[0008] In addition, these four wiring functions must be switched clockwise or counterclockwise, and cannot be switched directly

For example, if you want to switch from wiring scheme 1 to wiring scheme 3, you must first switch to wiring scheme 2 or to wiring scheme 4. In this way, two short power failures will occur during the transfer from wiring scheme 1 to wiring scheme 3. When switching from wiring scheme 2 to wiring scheme 4, it will also cause two brief power outages, seriously affecting the entire power supply system

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