A method for checking the operating conditions of a current transformer

Abstract

The invention discloses a method for inspecting the operating condition of a current transformer with high efficiency and comprehensive and accurate inspection results. This inspection method collects the basic information data of the current transformer and the field operation data, classifies the collected data and calculates the operating state value RI of the current transformer, and uses the preset corresponding relationship between the operating condition value and the operating state of the current transformer , to determine the actual operating state corresponding to the actual operating condition value of the current transformer. This inspection method has high efficiency and will not cause malfunctions of the equipment that was originally in normal operation due to human reasons. This inspection method takes into account the secondary load value, the primary Current percentage value, ambient temperature, ambient relative humidity, residual magnetism, and the influence of the adjacent primary conductor magnetic field on the current transformer can realize a comprehensive inspection of the operating conditions of the current transformer to ensure that the final inspection results are accurate, comprehensive and reliable. high sex. It is suitable for popularization and application in the technical field of state assessment of gateway metering equipment.

Description

technical field [0001] The invention relates to the technical field of status evaluation of gateway metering equipment, in particular to a method for checking the operating conditions of current transformers. Background technique [0002] In order to ensure the normal operation of current transformers and the reliability of measurement data, it is usually necessary to remotely estimate the operating conditions of current transformers. Most of the existing inspection methods for operating conditions of current transformers use manual inspection. The inspection method requires a lot of manual on-site inspection and complex calculation process, and the work efficiency is low; secondly, when the on-site accuracy test of the current transformer is performed manually, the current transformer is repeatedly operated, resulting in the original normal operation. If the equipment fails, there is a large hidden danger of failure; in addition, the existing current transformer operating c...

AI Technical Summary

Problems solved by technology

[0002] In order to ensure the normal operation of current transformers and the reliability of measurement data, it is usually necessary to remotely estimate the operating conditions of current transformers. Most of the existing inspection methods for operating conditions of current transformers use manual inspection. The inspection method requires a lot of manual on-site inspection and complex calculation process, and the work efficiency is low; secondly, when the on-site accuracy test of the current transformer is performed manually, the current transformer is repeatedly operated, resulting in the original normal operation. If the equipment fails, there is a large hidden danger of failure; in addition, the existing current transformer operating condition inspection method only simply detects the quality of the current transformer equipment, and the operating status detection of the current transformer is often ignored. The impact of this part of the fault is sometimes very large. Therefore, the existing inspection method for the operating condition of the current transformer cannot realize a comprehensive inspection of the operating condition of the current transformer, resulting in the final operating condition inspection results Inaccurate, and manual intervention is prone to errors, resulting in low reliability of test results, unable to accurately grasp the dynamic safety and stability of the operating conditions of electric energy current transformers, and thus unable to ensure safe, stable, and accurate operation of major current transformers, lack of accident control Process information for dynamic tracking and analysis, and cannot dynamically control serious faults

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