Intelligent substation data monitoring method and system thereof

Abstract

The invention relates to an intelligent substation data monitoring method and a system thereof. The method comprises the steps of (1) estimating the size of flow, and determining a monitoring port; (2) partitioning a VLAN (Virtual Local Area Network) where monitored ports are located; (3) partitioning a VLAN where the monitoring port is located; (4) setting the mirror modes and destination ports of the monitored ports. The system comprises a monitoring module, a switch and monitoring units, wherein the monitoring module is connected with the monitoring units through the switch. The method and the system have the advantages that the monitoring and analysis on station-control-layer network messages of an intelligent substation can be effectively realized through mirrors of all the ports, and a monitoring host can receive all the messages; through arranging the monitoring port in an independent VLAN, the flooding of multicast messages on a network can be prevented effectively, and the uniqueness of the messages is ensured.

Description

technical field [0001] The invention belongs to electric power communication systems, and in particular relates to an intelligent substation data monitoring method and system thereof. Background technique [0002] At present, intelligent substations characterized by digitalization of whole station information and networking of communication platforms generally use the information layering method proposed by IEC61850 to divide the substation automation system into station control layer, interval layer and process layer. The process layer mainly completes functions related to primary equipment such as sampling of analog quantities, switching input and output, and sending of operation control commands. The interval layer summarizes the real-time data of the process layer, receives commands from the station control layer and sends commands to the process layer. [0003] The station control layer is the monitoring and management center of the whole station, which provides a man-m...

AI Technical Summary

Problems solved by technology

It can be seen that the network messages in the secondary system are becoming more and more important. Usually, the station control layer of the smart substation monitors the messages of the station control layer through a network analyzer. The monitoring method is to directly divide the mirror. The analyzer will only receive one copy, but the multicast message will receive two duplicate messages. The reason is that there is no multicast configuration on the Ethernet switch, and there is no forwarding mapping table for ports and addresses in the address table. After the multicast enters the switch, it will flood each port. In this way, the network analyzer will receive a copy of the flooded message and a copy of the mirror copy. big impact

In another case, considering the situation of flooding, mirroring is not configured for multicast packets, but some devices send both unicast and multicast packets through the network, so unicast packets will be lost.

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