Transformer fault risk assessment method based on bowknot model

Abstract

The invention discloses a transformer fault risk assessment method based on a bowknot model. The method includes the steps: firstly, acquiring a current running state of a transformer through online monitoring data, and collecting running data and maintenance records of the transformer over the years to obtain a health index of the transformer; secondly, acquiring fault probabilities of components of the transformer according to fault analysis of the transformer; finally, performing risk assessment for the transformer by combining the data according to the built transformer bowknot model and a risk assessment matrix, and building a transformer fault risk ledger. Possible positions, causes and corresponding solution measures of transformer faults can be known, relative risk of one transformer can be quantized, unusual conditions of the transformer can be timely processed by operation and maintenance staff of an electric power system, equipment damage accidents caused by outbreak of transformer fault hidden danger are prevented, economic waste and reduction of safety and reliability caused by an unadvisable maintenance mode are avoided, and the transformer fault risk assessment method has high social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of transformers, and more specifically relates to a bowtie model-based transformer failure risk assessment method. Background technique [0002] The power transformer is the core of energy conversion and transmission in the power grid. It is the only way for all walks of life in the national economy and the energy source of thousands of households. It is one of the most important and critical equipment in the power grid. Therefore, improving the operation and maintenance technology and management level of transformers, preventing and reducing the probability of failure, and adopting reasonable maintenance strategies to reduce maintenance costs are problems that need to be solved urgently in the power industry at home and abroad. [0003] In view of the long-term operation of the power transformer, it is affected by electromagnetic vibration, mechanical wear, chemical action, atmospheric corrosion, electric c...

AI Technical Summary

Problems solved by technology

There are many experimental items and the data are huge

In the evaluation of the status of transformers, at present, the "right and wrong system" is mainly used, that is, the status is divided into "qualified" and "unqualified" states. There is no more detailed evaluation of the degree of pros and cons, which is not conducive to the maintenance and replacement of transformers.

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