Complex fault diagnosis method and device for power grid dispatching and computer equipment

Abstract

The invention relates to a complex fault diagnosis method and device for power grid dispatching and computer equipment. The method comprises the following steps: acquiring fault source remote signaling message information of power grid dispatching, establishing an information element set based on the message information, and converting the message information into message events one by one; basedon the information element set, establishing a local network topology model of main equipment and switches in the information element set; establishing a fault reason hypothesis set of the message event according to the local network topology model and a preset message event causal relationship knowledge table; and calculating the probability of the fault reason hypothesis set of the message event, and obtaining a fault diagnosis conclusion. By adopting the method provided by the embodiment of the invention, the power grid complex fault can be accurately diagnosed.

Description

technical field [0001] The present application relates to the technical field of fault diagnosis, in particular to a complex fault diagnosis method, device and computer equipment for power grid dispatching. Background technique [0002] The failure of the power grid will cause a series of protection and control equipment to operate one after another. The power grid dispatcher needs to quickly determine the cause of the failure that caused the protection and control action, and make dispatching operations to minimize the impact of the failure. Existing fault diagnosis methods usually require more accurate and comprehensive fault signals, and also require the accuracy of information. At present, when most power grids fail, the dispatcher cannot get detailed information of the fault signal in time when handling the fault. Fault diagnosis is carried out by relying on remote signaling messages sent from substations and system state changes monitored by data acquisition and monito...

AI Technical Summary

Problems solved by technology

Existing fault diagnosis methods usually require more accurate and comprehensive fault signals, and also require the accuracy of information. At present, when most power grids fail, the dispatcher cannot get detailed information of the fault signal in time when handling the fault. Fault diagnosis is carried out by relying on remote signaling messages sent from substations and system status changes monitored by data acquisition and monitoring and control systems. Therefore, it is difficult for most power grid fault diagnosis systems to give accurate diagnoses for complex faults

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