Fault diagnosis method based on transformer panoramic state information

Abstract

The invention discloses a fault diagnosis method based on transformer panoramic state information, and the fault diagnosis method is characterized in that equipment panoramic information such as online monitoring, test data, infrared detection and unfavorable working conditions are combined, the diagnosis of dissolved gas in oil is adopted as a starting point, and the diagnosis of the working condition of each part of a transformer is adopted as supplementation. The fault diagnosis method based on the transformer panoramic state information belongs to an expert diagnosis system of the transformer, the comprehensive physical examination information of the transformer can be obtained through the method, a fault can be located, a fault potential danger of the transformer can be thoroughly examined, the overhauling efficiency of equipment can be increased, the repeated power failure caused by the overhauling of the equipment can be reduced, the power supply reliability can be improved, and an important significance for enabling the safe and stable running of a power system can be realized.

Description

technical field [0001] The invention relates to a fault diagnosis technology for power transmission and transformation equipment, in particular to a comprehensive fault diagnosis method based on transformer panoramic equipment state information. Background technique [0002] The power transformer is the hub of the grid to transmit electric energy and the main equipment of the grid operation. The reliability of its operation is a necessary condition for the safety and stability of the power system. The capacity and voltage level have also been increased accordingly, and higher requirements have been put forward for the reliability of the transformer. Therefore, it is of great practical significance to obtain the health status of transformer operation through systematic diagnosis, which can improve the efficiency of operation and maintenance. [0003] Relatively mature transformer online monitoring technology and various diagnostic test methods have been formed at home and ab...

AI Technical Summary

Problems solved by technology

However, the fault diagnosis technology based on this is relatively simple, such as the three-ratio diagnosis method and David's triangle diagnosis method only for dissolved gas in oil, so it is impossible to microscopically locate the fault location of the equipment

In addition, the diagnosis is often only for a single fault without a comprehensive diagnosis of the equipment, resulting in many hidden faults that cannot be thoroughly checked, so that repeated power outages for test and maintenance have a great impact on the reliability of power supply

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