Electricity serves an important part to the economy and to people’s day-to-day activities. A power grid that fails can cause catastrophic damages.
Recently, ATOP provided a full turnkey industrial networking solution for a project consisting of up to 32 substations, many of which are far from each other. Requirements included, besides compliance with industrial cyber security standards and high reliability, support for: 
– Traffic optimization and packet prioritization according to IEEE 802.1p/q
– Precision Time Protocol – time synchronization according to IEEE 1588v2
– HSR-PRP zero packet loss redundancy protocol
Substation data traffic originates mainly from the RTU/VOIP/AMR/Recorder. These devices are connected to ATOP’s EHG2408 unmanaged switch, a plug and-play 8-port switch with fast, reliable network switching while offering increased network security through MACsec encryption.
EHG2408 is then connected to ATOP’s EHG7512, a 12-port managed gigabit Ethernet switch with not only eight RJ-45 but also four 10-Gigabit SFP uplinks ports, to communicate with other distant substations. A standard ERPS single ring topology creates network redundancy, ensuring less than 25ms recovery time in the event of network failover.
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