Nokia blueprint supports modernization of substation communications
IP/MPLS-based network architecture enables integration of legacy systems and digital technologies across substation zones.
Image for illustrative purposes
Utilities are facing increasing pressure to modernize substation infrastructure as they transition toward more data-driven and sustainable grid operations. This involves balancing the continued support of legacy applications, such as SCADA and teleprotection, with the integration of digital systems that enable automation, remote monitoring, and enhanced operational safety.
To address these evolving needs, Nokia has introduced its Substation of the Future network blueprint, an IP/MPLS-based architecture designed to support modern utility communication requirements across three substation zones: operational technology (OT), IEC 61850, and information technology (IT).
In the legacy OT zone, the blueprint provides connectivity for time-division multiplexing (TDM)-based applications, offering interfaces such as C37.94, RS-232, and G.703. These can be transported across IP/MPLS networks while maintaining quality of service and redundancy standards comparable to traditional SONET systems.
In the IEC 61850 zone, the solution supports Ethernet-based communication for intelligent electronic devices (IEDs) and grid automation applications. It enables connectivity for station bus and process bus functions, including GOOSE, Sampled Values, interlocking, and busbar protection.
The IT zone is equipped to handle modern systems such as CCTV, access control, VoIP, and IoT sensors through high fanout and Power over Ethernet (PoE) switching capabilities.
The blueprint also incorporates features to address long-term network needs, including:
- Support for TDM migration, ensuring continuity for existing protection schemes
- IEEE 1588 time synchronization using boundary clocks and GNSS fallback
- Quantum-safe MACsec encryption, aligning with evolving cybersecurity standards
- Scalability through 10 GE and 100 GE links for growing data demands
- Programmability of network nodes to adapt to future protocols and applications
This approach reflects a broader shift toward flexible, software-defined infrastructure that can support both legacy and next-generation grid applications. By restructuring substation communications around IP/MPLS networks, utilities can prepare for greater system complexity while improving grid visibility and reliability.
Source: Nokia
#grid automation#IP/MPLS#modernization#Nokia#software#Substation of the Future