IEC61850 redundant equipment access method and system based on communication link management

Abstract

The invention discloses an IEC61850 redundant equipment access method and system based on communication link management. An IEC61850 client communication subsystem is decomposed into a communication link access module, a communication link management module, an IEC61850 communication data processing module and an application data interface module. When an electric power monitoring system is initialized, an IEC61850 communication data model shared by all redundant devices is established; communication connection with each redundant device is established through the communication link access module, on-duty standby switching is performed on link data in the communication link management module, and after the on-duty link data is analyzed and processed through the IEC61850 communication datamodel, data service is provided for the system function module through the application data interface module. According to the method, system resource expenditure is saved in the mode that a pluralityof redundant devices share a data model, redundant data are processed in the link of the communication link, so that IEC61850 server redundant processing is transparent to system function modules, and the complexity of development of application function modules of a power monitoring system is reduced.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and in particular relates to an IEC61850 redundant device access method and system based on communication link management. Background technique [0002] As the infrastructure system of the urban lifeline engineering system, the power grid is the basis for maintaining national production and life because it involves the electricity demand of thousands of households. Safe operation is the top priority, because once the system fails, it will cause extensive social difficulties and huge losses. Economic losses. Smart substation is an important foundation and support for a strong smart grid. With the promotion and construction of smart substations in my country, the reliability requirements for the collection, measurement, control and monitoring of primary equipment signals in the station are getting higher and higher. In order to improve the reliability and redundancy of the monitor...

AI Technical Summary

Problems solved by technology

[0005] (1) Modeling all redundant devices on the client side at the same time increases the memory overhead of the client monitoring system and affects system performance;

[0006] (2) The switching of on-duty standby data is handled by the system application module, so that all system application modules need to have the function of selecting on-duty standby data, and the reusability of the entire system function is reduced

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