⚡ Energy & Utilities · Network
Digital Substation Network
The network zones of a digital substation: process bus, station bus, the control centre link and a secured remote-access path.
Drawing diagram…
What this diagram shows
- Protection relays sit on an isolated process bus
- The control centre link goes through a firewall and data diode
- Vendor remote access only via a jump host with MFA
Prompt used
Digital substation network topology: merging units and protection relays (IEC 61850 GOOSE/SV) on a redundant process bus; bay controllers, the substation HMI and a gateway on the station bus; a firewall and one-way data diode to the utility control centre (SCADA over IEC 60870-5-104); vendor remote access only through a jump host with MFA in a DMZ.
Mermaid code
flowchart TD
subgraph PROC["Process Bus (IEC 61850 GOOSE / SV)"]
MU1[Merging Unit Bay 1]
MU2[Merging Unit Bay 2]
PR1[Protection Relay 1]
PR2[Protection Relay 2]
end
subgraph STATION["Station Bus"]
BC[Bay Controllers]
HMI[Substation HMI]
GW[Substation Gateway]
end
subgraph DMZ["Substation DMZ"]
FW[Firewall]
JH[Jump Host with MFA]
DD[Data Diode]
end
CC[Utility Control Centre SCADA]
VEN[Vendor Remote Access]
MU1 --- PR1
MU2 --- PR2
PR1 --- BC
PR2 --- BC
BC --- HMI
BC --- GW
GW -->|"IEC 60870-5-104"| FW
FW --> DD --> CC
VEN -->|"VPN + MFA"| JH --> FWRelated templates
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