Automatic grounding conductive device for leakage current of transformer

Abstract

The invention discloses an automatic grounding conductive device for leakage current of a transformer. The automatic grounding conductive device is used through being connected to a transformer connected with a leakage current acquisition circuit and a leakage current acquisition device on a PLC control device, and comprises a fixed bracket and a grounding guide rod, wherein the fixed bracket is fastened to the bottom position of a transformer housing; the grounding guide rod is connected to the fixed bracket in a rotatable grounding manner through a release motor and a release device; and therelease motor is connected to the PLC control device of the transformer through a leakage current normally open switch to obtain a work instruction. According to the automatic grounding conductive device for the leakage current of the transformer, on one hand, real-time automatic diversion grounding on the leakage current is achieved, and on the other hand, a protection circuit for delayed leakage of the leakage current is arranged, so that the reliability is high and the implementation cost is low.

Description

technical field [0001] The invention relates to the field of transformer leakage protection device and system technology, in particular to a transformer leakage current automatic grounding conductive device. Background technique [0002] The power system currently uses a large number of power system transformers, and the windings in the transformer are also one of the most basic components of the transformer. It is the circuit part of the transformer, usually wound with copper wire or aluminum wire wrapped in insulating paper. The winding connected to the high-voltage grid is a high-voltage winding, and the winding connected to the low-voltage grid is a low-voltage winding. Large power transformers use concentric windings. It sets the high and low voltage windings concentrically on the iron core column. Usually the low voltage winding is close to the core and the high voltage winding is on the outside. [0003] Nowadays, many power system transformers operate in complex ...

AI Technical Summary

Problems solved by technology

Despite such protective measures, due to the variety of transformer capacity levels and complex circuits, it is difficult to ensure that the various protective measures supporting it are foolproof, especially the leakage fault of the transformer, which may occur in any part, and general leakage protection is in the main circuit, and the effectiveness of the leakage protection circuit itself cannot be monitored in real time, which leads to the inability to detect the leakage fault of the transformer in time, leading to accidents, especially for transformer maintenance personnel and personnel around the transformer

It is easy to cause electric shock accident

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