Library building method of transformer substation equipment fault case library and fault diagnosis method and system

Abstract

The invention relates to a library construction method for a transformer substation equipment fault case library, a fault diagnosis method and system, and the method comprises the steps: constructinga fault case which is expressed as {a fault category, a fault feature information set, and a solution}, wherein the fault feature information set is a set which is composed of various fault feature signals which can be collected, and the probability of occurrence of corresponding fault signals; And importing the constructed fault cases into a database to form a transformer substation equipment fault case library. According to the invention, a large amount of secondary equipment overhaul data accumulated in the transformer substation is utilized; and constructing a fault case according to the fault type of the equipment, the fault feature information set and the solution, and storing the constructed fault case in a database to form a transformer substation equipment fault case library so asto prepare for pre-diagnosis of a transformer substation secondary equipment fault.

Description

technical field [0001] The invention relates to a method for building a fault case database of substation equipment, a fault diagnosis method and a system, and belongs to the technical field of intelligent substation data processing. Background technique [0002] Intelligent electronic devices (IEDs) are widely used in smart substations. These secondary devices have strong self-inspection capabilities and communication capabilities. When a fault occurs, a large number of alarms can be generated to help operation and maintenance personnel find faults. At present, the construction of the substation secondary equipment online monitoring system project has realized the centralized collection and monitoring of the status information of the secondary equipment, but the data of the secondary equipment status monitoring has not been effectively used, and technical means such as fault diagnosis and defect prediction are lacking. On the other hand, during the long-term operation of th...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for building a substation equipment fault case database, a fault diagnosis method and a system, which are used to solve the problem that the fault diagnosis of secondary equipment in a substation cannot be realized in advance

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