Current transformer operation condition testing method

Abstract

The invention discloses a current transformer operation condition testing method which is high in efficiency and comprehensive and accurate in test result. According to the testing method, by collecting basic information data and site operation data of a current transformer, the collected data are classified, and a current transformer operation state value RI is calculated, and by means of the corresponding relation between a preset current transformer operation condition value and the operation state, the actual operation state corresponding to an actual operation condition value of the current transformer is determined. The testing method is high in efficiency, the situation that due to man-made reasons, equipment normally operating originally breaks down is avoided, the influence on the current transformer from secondary load values, primary current percentage values, environment temperature, relative environment humidity, residual magnetism and an adjacent primary conductor magnetic field is considered in the testing method, the operation condition of the current transformer can be tested comprehensively, and it is ensured that the final obtained test result is accurate, comprehensive and high in reliability. The method is suitable for being applied to and popularized in the technical field of gateway metering equipment state evaluation.

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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