Power transformer fault intelligent diagnosis technology, method and device

Abstract

The invention discloses power transformer fault intelligent diagnosis technology, method and device, and relates to power transformer fault intelligent diagnosis technology and method and the intelligent diagnosis device based on the technology and the method. The intelligent diagnosis device comprises a data acquisition and transmission part and a management and display part. The intelligent diagnosis device is characterized in that power transformer fault intelligent diagnosis technology and method comprise a dissolved gas in oil analysis and diagnosis technology, a partial discharge online monitoring and diagnosis technology, an infrared temperature measurement diagnosis technology, a vibration analysis and diagnosis method, a frequency response analysis and diagnosis method, a winding temperature indication diagnosis method and a low voltage impulse response test diagnosis method, and fault intelligent diagnosis is carried out. According to the invention, a multi-parameter state monitoring method is used, and multiple fault intelligent diagnosis technologies and methods are integrated; valuable data which can be used to diagnose a fault and find out the position are given; the cause of the defect is eliminated; the shutdown time and the cost are reduced; and the purposes of power transformer intelligent monitoring and intelligent diagnosis are realized.

Description

technical field [0001] The invention relates to a power transformer fault intelligent diagnosis technology and method, and belongs to the technical field of power main equipment fault diagnosis. Background technique [0002] At present, in the process of transmission and distribution of electric energy, power transformers, as the core of energy conversion and transmission, are widely used in power plants, power supply stations, distribution stations and other fields. The only way to go is the most important and critical equipment in the power grid. The safe operation of power equipment is the first defense system to avoid major accidents in the power grid, and the power transformer is the most critical equipment in this defense system, and the requirements for its safe and reliable operation are obvious. A serious accident of a transformer will not only cause its own damage, but also interrupt the power supply, causing huge economic losses to the society, especially those m...

AI Technical Summary

Problems solved by technology

In addition, due to the uncertainty of the mutual restriction relationship of dissolved gas in oil, and often multiple types of failures occur at the same time

However, most of the current research focuses on the diagnosis of a single fault, and there is a lack of research on the diagnosis of multiple faults.

However, a single prediction method is often difficult to fully reflect the variation of gas concentration and the interaction between various fault gas concentrations, resulting in low prediction accuracy

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