Transformer state analysis and fault diagnosis method and system

Abstract

The embodiment of the invention discloses a transformer state analysis and fault diagnosis method and system. The transformer state analysis and fault diagnosis method and system is applied to solving the technical problems that, in the prior art, transformer online monitoring can only provide sole one-dimensional data which cannot complete reflect transformer states, and state monitoring evaluation manners fail to provide reasonable set threshold values. The method comprises monitoring thermal, mechanical, chemical and electrical parameters of a transformer on line and in real time; acquiring key parameters of a power grid operation scenario where the transformer is positioned; through preset diagnosis algorithms, performing multi-dimensional information fusion and health diagnosis on the transformer; by combining information data obtained through the multi-dimensional information fusion and health diagnosis on the transformer with historical data, performing transformer state analysis; according to a result obtained through the transformer state analysis, monitoring whether transformer indexes are abnormal; if so, issuing a system alarm, and if not, continuing to perform real-time online monitoring on the transformer.

Description

technical field [0001] The invention relates to the field of transformer monitoring, in particular to a transformer state analysis and fault diagnosis method and system. Background technique [0002] As one of the most important primary power equipment, the substation undertakes important functions of power dispatching, protection and control. Transformers are not only complicated to manufacture and expensive to manufacture, but whether they can operate safely and stably is directly related to the effective supply of electric energy and the safe operation of the system. Therefore, establishing a complete transformer operation monitoring system and constructing an effective transformer state analysis and fault diagnosis method have become an important guarantee for the safe and reliable operation of transformer equipment. At present, transformer status monitoring mainly includes: oil chromatography, oil temperature, iron core current, etc. The status data obtained from trans...

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Problems solved by technology

[0006] The embodiment of the present invention provides a transformer state analysis and fault diagnosis method and system, which solves the problem that the online monitoring of transformers in the prior art is isolated one-dimensional data, which cannot fully reflect the state of the transformer and the evaluation method of state monitoring is extremely The technical problem of unreasonable setting of the threshold value judgment and evaluation method

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