A real-time monitoring method for smart substation process layer network

Abstract

A real-time monitoring method for the process layer network of a smart substation. In the SCD of a smart substation, there is generally a lack of network switch model information, which leads to incomplete device topology diagrams and breakpoints in the middle. It is impossible to fully describe and display the actual network in the station, especially the second All conditions of the secondary circuit. This method firstly identifies and establishes the key identification of the networked secondary circuit and the switch itself, adds the corresponding switch information in the SCD file, and standardizes the definition of the network connection relationship. Combined with the association relationship of the secondary virtual circuit in SCD, the dynamic monitoring of the secondary virtual circuit based on the network topology and communication status is realized. Using graphical technology and referring to the traditional secondary loop method to visualize the virtual loop, and monitor whether there is any abnormality at each port through the uploaded traffic and IED information.

Description

technical field [0001] The invention relates to the field of process-level network monitoring of an intelligent substation in a power system, in particular to realize the process-level network topology monitoring of an intelligent substation based on switch message identification technology. Background technique [0002] At present, the planning and construction of smart substations have entered a period of rapid development, and their proportion in the power grid is increasing. In the three-layer network structure of the entire smart substation system, the process layer network is the bottom layer most directly connected to the primary equipment. , its operation stability is directly related to the safe and stable operation of the whole station, and the process layer switch is the core equipment of the process layer network. Different from conventional substations, the process layer network adopts Ethernet digital transmission mode to replace traditional hard-wired loops. T...

AI Technical Summary

Problems solved by technology

[0004] (1) Since the switch ports for obtaining SMV and GOOSE messages are different, the connection status of the IED device process layer link cannot be reflected in real time

[0005] (2) The specific switch port traffic conditions that transmit SMV and GOOSE messages cannot be obtained, and some traffic anomalies cannot be warned

[0006] (3) It is impossible to obtain the dynamic network topology map of the process layer of the whole station

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