A high-voltage current transformer field measurement and calibration mobile platform

By designing a mobile platform for on-site metrological verification of high-voltage current transformers, the automatic series connection and docking of standard current transformers and the current transformers under test were realized, solving the problems of large amount of manual operation and risk of electric shock, improving verification efficiency and reducing residual voltage risk, and ensuring the safety and stability of the verification process.

CN122218595APending Publication Date: 2026-06-16HUBEI ELECTRIC POWER CO JINGZHOU POWER SUPPLY CO
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Patent Information

Application Number
CN202610492822.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-15
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

During the on-site verification of high-voltage current transformers, manual operation is required, which is inefficient and poses a risk of electric shock. It cannot meet the requirements for rapid and automated verification. At the same time, the secondary terminals of the transformer under test are prone to residual voltage due to electromagnetic induction.

Method used

A mobile platform for on-site metering and verification of high-voltage current transformers is designed. It adopts a primary-side connector assembly, a secondary-side connector assembly, and a conveying assembly to realize the automatic series connection and docking of standard transformers and transformers under test. The auxiliary docking module and discharge assembly ensure the safe disconnection and reconnection of the secondary-side terminals. The disassembly and assembly process is controlled by a drive unit and a contact switch to ensure the stability and safety of the electrical connection.

Benefits of technology

The automated disconnection and connection process of the current transformer under test is realized, which reduces the risk of electric shock from manual operation, improves the verification efficiency, and reduces the risk of residual voltage on the secondary side terminals through the active discharge function, ensuring the safety and reliability of the verification process.

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Abstract

The application discloses a high-voltage current transformer field measurement and calibration mobile platform, and relates to the technical field of current transformer calibration. The high-voltage current transformer field measurement and calibration mobile platform comprises a cabinet body, a primary side joint assembly, a secondary side joint assembly, a conveying assembly and a standard transformer. The primary side joint assembly is arranged on the inner top wall of the cabinet body and is used for butt joint with the primary side terminal on the top of the measured transformer. The secondary side joint assembly is arranged in the cabinet body and is located below the primary side joint assembly and is used for butt joint with the secondary side terminal on the side wall of the measured transformer. The conveying assembly is used for supporting and conveying the measured transformer into the cabinet body. The secondary side joint assembly corresponds to the position of the conveying assembly. The standard transformer is arranged in the cabinet body. The primary side terminal of the standard transformer is electrically connected with the primary side joint assembly. The secondary side joint assembly comprises an auxiliary butt joint module which is used for auxiliary butt joint and discharging operation on the secondary side terminal of the measured transformer after calibration. The application has the effects of improving the calibration efficiency and safety of the transformer.
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