Value traceability and monitoring method for low-voltage current transformer automation verification system

Abstract

The invention provides a value traceability and monitoring method for a low-voltage current transformer automation verification system. Value traceability is performed on the low-voltage current transformer automation verification system based on a network remote correction method. The method comprises monitoring test data of low-voltage current transformer inspection samples output by the verification system through a statistical method and performing risk early warning on the low-voltage current transformer. Comparing with the prior art, time required by correction is shortened, correction costs are reduced, and the metering center work delaying time of a measuring center is reduced; results can be re-inspected on line before verification, so that the correction quality is improved; sample testing and verification data statistical processing are completed automatically through a computer, the monitoring amount of the automation verification system state is reduced, and the reliability and the timeliness of state monitoring of the automation verification system are improved.

Description

technical field [0001] The invention relates to a value traceability and monitoring method of a verification system, in particular to a value traceability and monitoring method of a low-voltage current transformer automatic verification system. Background technique [0002] Low-voltage current transformers are used for energy measurement in 0.4kV distribution lines. In order to ensure the fairness and justice of energy trade settlement, low-voltage current transformers must pass the verification before they can be installed and put into operation on site. With the rapid development of the economy, the demand for electricity in various regions is increasing day by day, and the use of low-voltage current transformers for metering is also increasing rapidly. The traditional manual method of testing low-voltage current transformers has low work efficiency and high operating costs, and it is difficult to ensure a high degree of consistency between the verification standards and t...

AI Technical Summary

Problems solved by technology

[0006] ①: The structure of the automatic verification system is complex, the volume is large, the overall transportation is difficult, and it does not meet the conditions for overall inspection;

[0007] ②: After the installation and commissioning of the automatic calibration system is completed, some standard equipment and measuring instruments cannot or are difficult to be completely disassembled, making it difficult to send them for inspection;

[0008] ③: The inspection process of instruments and equipment lasts for a long time, which brings inconvenience to users and affects the completion of their production tasks;

[0009] ④: The verification cycle of most instruments and equipment is one year. During this year, some of them may have been out of tolerance, and it is difficult to determine the time of their out-of-tolerance with the current measurement method;

[0010] ⑤: Personnel costs and travel costs are relatively large, and on-site calibration at multiple locations cannot be performed at the same time, and the advantages of measurement experts cannot be fully utilized

Images