Temporary grounding system and method for auxiliary transformer of giant hydropower station

By designing a temporary grounding system for transformers, and utilizing mechanized operations to achieve automatic connection and locking of grounding wires, the problems of difficult handling and safety hazards of grounding wires during the maintenance of transformers in giant hydropower stations have been solved. This has enabled standardized and safe grounding operations, reduced labor intensity, and provided remote monitoring capabilities.

CN122456201APending Publication Date: 2026-07-24CHINA YANGTZE POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA YANGTZE POWER
Filing Date
2026-04-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

During the overhaul of existing giant hydropower station transformers, the grounding wires are difficult to transport, inconvenient to install, pose significant safety hazards, and their status cannot be monitored, which also carries the risk of improper operation.

Method used

A temporary grounding system for a giant hydropower station transformer was designed, including a grounding device base, a transmission gear set, a rotary locking device, and a grounding conductor. The system achieves automatic connection and locking of the grounding conductor through mechanized operation and is equipped with a status switch for real-time monitoring.

Benefits of technology

It achieves standardized and safe grounding operations, reduces labor intensity, improves operational safety, has remote monitoring capabilities to prevent misoperation, is applicable to multiple transformers, and reduces configuration costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a kind of giant hydropower plant transformer temporary grounding system and method, belongs to transformer maintenance grounding technical field.System includes transformer, grounding device seat body, grounding device, transmission gear set, rotary locking device, grounding sliding base and state monitoring assembly;Grounding device can overturn switching state, through gear linkage drive grounding locking contact automatic plug-in completes grounding end installation, piston rod automatic extension realizes conductor end butt joint and locking, with mechanical locking and double-point redundant grounding.Installation follows first grounding end, then conductor end, removal first removes conductor end, then removes grounding end specification sequence, cooperate state switch to realize remote real-time monitoring and position identification.The application is easy to operate, without manual contact grounding body, high safety and reliability, can be single set commonly used in multiple transformers, greatly improves the safety management level and operation efficiency of giant hydropower transformer maintenance.
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