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However, a few remarks are explained below: Wireshark is free of charge tools that can be used to analyze traffic in a digital substation.

The picture below displays a computer running Wireshark connected to the system over a switch mirror port listen to the traffic on the subscriber protection relay.

It is important to capture the traffic near the consumer source, using a tap channel, or the same switch (through a mirror port). Wireshark can access and record the traffic on the computer network interface card (NIC), but if you want to verify the correct behavior of the SV system, the capture' location is essential too. 'If you have any questions about the SV just leave a comment in the comment section.' Sampled Values packet inspection with Wireshark 1) Capturing SV bytes on-fly The most recent profiles can be found in IEC 61869-9. The SV payload is defined in the IEC 6 standard, and common harmonize to allow interoperability through the UCA IEC 6 LE guideline. SV is a layer 2 protocol, which means it runs over the data link layer of the OSI model, and it has all the properties of an Ethernet frame such as source and destination MAC addresses. The picture below is one example of publisher MU acquiring currents and voltages from the electric power system, digitalizing the data through SV protocol, and transmitting to a subscriber protection relay over a switched network. It is typically used by merging unit (MU) devices to transfer sampled current and voltages measurements over a switched Ethernet network. IEC 6 Sampled Values (SV) standardize the transmitting of instantaneous power system data over an Ethernet communication channel using a publisher/subscriber mechanism. Wireshark is a powerful open-source network protocol analyzer: What is the IEC 6 SV protocol? But if you are running into a situation that requires SV packet inspection and no commercial tools are available, this article is for you! In the following lines, we are going to demonstrate how to use Wireshark to understand SV communication in a digital substation environment. There are several commercial tools available to capture and monitor IEC 6 Sampled Values (SV) traffic, and they provide great functionality and benefits.

Wireshark https searches from current location