Anti-misoperation ground protection mechanism for dry type transformer

Abstract

The invention relates to the field of transformer maintenance safety, in particular to an anti-misoperation ground protection mechanism for a dry type transformer. The anti-misoperation ground protection mechanism for the dry type transformer comprises the transformer, a shell outside the transformer, a ground operation mechanism, a protection mechanism and a control mechanism; the ground operation mechanism comprises an operation connecting rod and a ground knife switch in the shell, an operation mechanism of the ground knife is connected with one end of the operation connecting rod, and the other end of the operation connecting rod penetrates out of an operation hole in the shell; the protection mechanism comprises a baffle and a first electromagnetic lock, the baffle is arranged on one side of the operation hole, and the first electromagnetic lock controls the baffle to shield the operation hole; the control mechanism comprises an electrified display arranged on the shell, the electrified display comprises three electrified sensors and a display body, the three electrified sensors are connected with wire inlet ends of a three-phase wire on a high-voltage side of the transformer respectively, and the display body is arranged outside the shell. The anti-misoperation ground protection mechanism for the dry type transformer has the advantages that during outage for maintenance, the ground knife switch can be operated outside the shell of the transformer to finish reliable grounding of the transformer, and accordingly personal safety of maintainers can be guaranteed.

Description

technical field [0001] The invention relates to the field of transformer maintenance safety, in particular to a grounding protection mechanism for preventing misoperation of dry-type transformers. Background technique [0002] With the standardized construction of substations, the operational safety requirements for transformers and other equipment in substations have been increased. At present, dry-type transformers are grounded during power outage maintenance, mainly relying on maintenance personnel to use connecting wires to ground or use other grounding devices to manually operate grounding, which endangers maintenance personnel. personal safety, with a high potential safety hazard. Moreover, due to the improper judgment of maintenance personnel, it is very easy to cause grounding misoperation when the transformer is live and power transmission misoperation when the transformer is in the grounding state, which are not conducive to the standardized construction o...

AI Technical Summary

Problems solved by technology

[0002] With the standardized construction of substations, the operational safety requirements for transformers and other equipment in substations have been increased. At present, dry-type transformers are grounded during power outage maintenance, mainly relying on maintenance personnel to use connecting wires to ground or use other grounding devices to manually operate grounding, which endangers maintenance personnel. personal safety, with a high potential safety hazard

Moreover, due to the improper judgment of maintenance personnel, it is very easy to have grounding misoperation when the transformer is live and power transmission misoperation when the transformer is in the grounding state, which are not conducive to the standardized construction of substations.

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