Comprehensive management method of transformer short-circuit resistance capability

Abstract

The invention discloses a method for comprehensively managing the anti-short-circuit capability of a transformer. Based on the research on the factors affecting the transformer's possible short-circuit impact, the parameters that affect the short-circuit resistance of the transformer are collected, summarized, arranged and studied. Established a system centered on transformer short-circuit resistance accounting, evaluation, and governance. Through real-time access to data such as transformer factory parameters and transformer operating parameters, standardized operations for accounting, evaluation, and governance have been established, and grid equipment has been transformed from traditional The planned maintenance method has been transformed into a more scientific state-based maintenance method, which improves the stability of the safe operation of power grid equipment and reduces the losses caused by unexpected accidents.

Description

technical field [0001] The invention relates to the field of electric equipment safety protection, in particular to a method for comprehensively managing short-circuit resistance of transformers. Background technique [0002] During the entire operation period, the transformer will inevitably be subjected to multiple impacts from various bad or extreme operating conditions. With the continuous improvement of the voltage level of the transformer in recent years, the continuous increase of the system capacity and the single capacity of the transformer, the short-circuit impedance of the transformer Under certain conditions, the threat of short-circuit electromagnetic force to the transformer will be more serious, especially the short-circuit in the near area has caused great harm to the transformer. In order to ensure the safe and reliable operation of the transformer, it is necessary to try to improve the short-circuit resistance of the transformer. The operation practice in...

AI Technical Summary

Problems solved by technology

[0003] At present, the research on the short-circuit resistance capacity of transformers is mostly based on the stress analysis based on the characteristics of the transformer material and structure, and there is a lack of research on the impact of the connection mode, operating environment, and short-circuit current cumulative impact on the short-circuit resistance capacity of the transformer.

At the same time, there are not many defensive decisions based on the results of calculation and verification, and there is a big difference between theoretical research and actual conditions.

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