A double protection box type substation

Abstract

The embodiment of the invention discloses a box-type substation with double protection, which includes a box body, and the two windings of the transformer assembly are connected through a double protection device, which is arranged in an external maintenance room on the front of the transformer room; the double protection device includes Install the protective shell in the box and the hollow bottom plate arranged inside the protective shell. The insulating control bridge is hinged on the hollow bottom plate. The upper surface of the hollow bottom plate is provided with a compression spring near the hinged end of the insulating control bridge. The compression spring and The lower surface of the insulation control bridge is connected, the middle position of the insulation control bridge is provided with a metal sheet, the inside of the hollow bottom plate is provided with an electromagnet for absorbing the metal sheet, and the end of the insulation control bridge is provided with a power contact piece at the end far away from the hinged end , There are two sets of terminal posts on the hollow bottom plate; this scheme uses a double protection device to simultaneously energize and de-energize the two windings of the transformer component, which improves the safety performance of the transformer component and facilitates later maintenance.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of substations, in particular to a box-type substation with double protection. Background technique [0002] A substation is a place in a power system that transforms voltage and current, receives electric energy and distributes electric energy. The substation in the power plant is a step-up substation, whose function is to boost the electric energy generated by the generator and feed it to the high-voltage grid. electricity terminal. [0003] Box-type transformer substation is a typical representative of substation. It is a kind of high-voltage switchgear, distribution transformer and low-voltage power distribution device. It is a factory prefabricated indoor and outdoor compact power distribution equipment arranged according to a certain wiring scheme. High voltage, low voltage power distribution and other functions are organically combined, installed in a moisture-proof, rust-p...

AI Technical Summary

Problems solved by technology

[0006] For this reason, the embodiment of the present invention provides a box-type substation with double protection, which uses a double protection device to simultaneously energize and de-energize the two windings of the transformer assembly, so as to improve the safety performance of the transformer assembly and facilitate later maintenance. In the technology, two circuit protection devices are required to protect the primary winding and secondary winding of the transformer assembly, which is complicated to control and inconvenient to maintain.

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