A diagnostic method, device and equipment for a secondary system fault of an intelligent substation

Abstract

The invention discloses a fault diagnosis method for a secondary system of an intelligent substation. First, a fault information database is generated based on the fault information of the secondary system and the characteristics of the fault information corresponding to the fault information; The system data of the secondary system is identified to obtain the identification results of fault information, and the system error data and fault information characteristics are obtained; and then according to the fault information database, the fault information identification results are analyzed to obtain the type of system fault and the location of the system fault. Compared with the existing technology, there is no need to increase the complexity of the equipment, only need to analyze and diagnose according to the fault information detected by the secondary system, and the system fault type and system fault location can be obtained, which greatly reduces the fault diagnosis of the secondary system of the substation. The equipment complexity and design complexity have improved the system fault diagnosis ability of the original substation secondary system. The invention also discloses a fault diagnosis device and equipment for the secondary system of the intelligent substation, which have the above beneficial effects.

Description

technical field [0001] The invention relates to the field of substation fault detection, in particular to a diagnostic method, device and equipment for a secondary system fault of an intelligent substation. Background technique [0002] With the development of smart substations, secondary system information has become the carrier for the implementation of various functions such as protection, dispatch, operation, and maintenance of smart substations. important guarantee. [0003] However, there are still many problems in the smart substation, especially the secondary system. On the one hand, the secondary system inevitably has faults such as component damage, poor contact, and fiber optic disconnection, which directly threaten the stable and reliable operation of the smart substation; on the other hand, the smart substation The digitalization and networking of the secondary system increases the complexity of the secondary system, which brings difficulties to the fault locat...

AI Technical Summary

Problems solved by technology

On the one hand, this method is difficult to fully meet the fault diagnosis requirements of the secondary system, such as faults in the secondary system protocol, complete equipment damage, etc., which cannot be diagnosed through sensor analysis; on the other hand, the added mutual inductance components further increase the complexity of the system , while increasing the difficulty of secondary system operation and maintenance, there is also the risk of derivative failures

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