IEC TR 61850-90-12-2020 PDF

Full title and description

IEC TR 61850-90-12:2020 — Communication networks and systems for power utility automation — Part 90‑12: Wide area network engineering guidelines. This Technical Report provides definitions, guidelines and recommendations to plan, specify, design and test wide area networks (WANs) used for protection, control and monitoring based on IEC 61850 and related standards, addressing substation-to-substation, substation-to-control-centre and control-centre-to-control-centre communications.

Abstract

This second edition (2020) updates and extends the 2015 edition. It focuses on engineering WANs for IEC 61850 applications and covers topology, redundancy, traffic latency and QoS, traffic management, multicast of synchrophasor data, protection-related messaging (GOOSE, SMV), clock synchronization, security considerations, wireless and power-line communications, and migration strategies (including MPLS mapping for teleprotection). The document includes use cases and practical engineering recommendations.

General information

• Status: Current (technical report in force; replaces the 2015 edition).
• Publication date: 28 July 2020 (publication entry for the 2nd edition; national adoptions show early August 2020 publication dates).
• Publisher: International Electrotechnical Commission (IEC). Also published/available via national standards bodies (e.g., BSI as PD IEC TR 61850-90-12:2020).
• ICS / categories: 33.200 (Telecontrol / Telemetry / Power systems management and associated information exchange).
• Edition / version: Edition 2.0 (IEC TR 61850-90-12:2020).
• Number of pages: 259 pages (published IEC edition metadata; some national publications list 264 pages due to formatting differences).

Scope

This Technical Report gives practical engineering guidance for wide area networks that carry IEC 61850 traffic and related utility communications. It addresses WAN topologies and architectures, redundancy and resilience, latency and deterministic delivery for protection messages, multicast transport of high-rate synchrophasor and sampled values, Quality of Service (QoS) and traffic management, clock synchronization methods, security considerations for WAN links, wireless and power-line communication use cases, and migration strategies from legacy teleprotection and packet-switched networks. The guidance is intended for utilities, network engineers and system integrators implementing IEC 61850 across geographically distributed sites.

Key topics and requirements

• Engineering principles for WANs supporting IEC 61850 traffic (design, specification and test guidance).
• Latency, determinism and availability targets for protection and control communications (requirements and mitigation strategies).
• Quality of Service (QoS) and traffic classification/marking to protect protection, control and synchrophasor streams.
• Multicast transport and scaling considerations for large volumes of synchrophasor data and sampled values (SMV).
• Topology and redundancy options (diverse paths, protection switching, restoration techniques).
• Clock synchronization approaches and accuracy requirements for time-sensitive measurements and protection functions.
• Security recommendations for WAN links (network segmentation, secure links, operational practices).
• Wireless and power-line communication technologies applicability and performance considerations.
• Migration guidance, including mapping MPLS to teleprotection and strategies for transition from legacy systems.
• Use cases and example configurations drawn from utility practice to illustrate recommended solutions.

Typical use and users

Primary users are utility network and protection/control engineers, IEC 61850 system integrators, telecommunication architects working for transmission and distribution operators, and project teams responsible for specifying, procuring and commissioning WAN links for protection, control and monitoring. The TR is also used by equipment vendors and consultants designing compliant WAN solutions.

Related standards

Closely related documents include other parts of the IEC 61850 series (general concepts, communication mappings and object models), IEC 62351 (security for power system communications, including parts such as IEC 62351-3), IEC 61400-25 (communication for wind power plant monitoring and control where IEC 61850 principles are used), and industry standards covering synchrophasors and teleprotection practices. This TR is part of the IEC 61850 family and is intended to be used alongside these standards when specifying WANs for utility automation.

Keywords

IEC 61850, wide area network, WAN engineering, teleprotection, GOOSE, SMV, sampled values, synchrophasor, PTP/clock synchronization, QoS, MPLS, traffic management, network redundancy, utility communications, power system automation.

FAQ

Q: What is this standard?

A: IEC TR 61850-90-12:2020 is a Technical Report providing guidance for engineering wide area networks that support IEC 61850-based protection, control and monitoring across geographically distributed utility sites. It is the second edition (2020) of the TR.

Q: What does it cover?

A: It covers WAN architectures and topologies, latency and QoS requirements for protection/control, multicast transport of large data sets (e.g., synchrophasors and SMV), clock synchronization, security considerations, wireless and power-line solutions, MPLS and teleprotection mapping, migration strategies, and practical use cases and tests.

Q: Who typically uses it?

A: Utility engineers (communication, protection, SCADA/EMS), system integrators, network architects, equipment vendors and consultants involved in designing, specifying, procuring and commissioning WANs for power system automation.

Q: Is it current or superseded?

A: The 2020 edition (Ed. 2.0) is the current edition and supersedes the 2015 edition (IEC TR 61850-90-12:2015). The IEC publication metadata lists the 2020 edition as the active (stable) technical report.

Q: Is it part of a series?

A: Yes — it is Part 90‑12 of the IEC 61850 family (Communication networks and systems for power utility automation). It should be used in conjunction with other IEC 61850 parts and related standards such as IEC 62351 and IEC 61400-25 when specifying complete systems.

Q: What are the key keywords?

A: Wide area network, IEC 61850, WAN engineering, teleprotection, GOOSE, SMV, synchrophasor, QoS, clock synchronization, MPLS, network redundancy, utility communications.