TR IEC Deterministic Networking

Transcription

1 INTERNATIONAL ELECTROTECHNICAL COMMISSION TR IEC Deterministic Networking Maik Seewald IEC TC57, WG10

2 IEC in a nutshell Title: Communication networks and systems for power utility automation IEC has left the substation! The design objectives are: Interoperability (between devices & systems) Free configuration (free allocation of functions to devices) Long term stability (layered, object-model based design, consistent configuration language) Extensibility (into new domains or even other IoT verticals) Contains also environmental and conformance testing requirements Security is defined in IEC (1-13) Source: IEC TC57 WG10-IEC Status: No Fieldbus Variety in Power Automation! 2

3 T-profile Intro IEC Protocol Stack hard real-time stack soft real-time stack ACSI Publisher - Subscriber services (multicast) Client - Server Core ACSI services (Type 2,3,5) session Sampled Values (SV) (Type 4) R-SV IP (O) Generic Object- Oriented Substation Events GOOSE (Type 1, 1A) R-GOOSE IP (O) Precision Time Protocol IEC IEC /IEEE (Type T5) Network Time Protocol (Type T0, T1) SNTP RFC 4330 MMS ISO :2003 ACSE ISO/IEC 8649:1996 Presentation ISO/IEC 8822:1994 Abstract Syntax ISO/IEC :2008 ISO Session ISO/IEC 8326:1996 ISO Transport RFC 1006 transport UDP RFC 768 TCP RFC 793 network IP link PT = 88-BA PT = 88-B8 PT = 88-F7 PT= VLAN 802.1Q 802.1Q 802.1Q (O) VLAN & priority tag 802.1Q (O) MAC link redundancy entity IEC [PRP / HSR (PT = 89-2F) / PTP] (O) physical layer Ethernet B Ethernet A Source: IEC TC57 WG10-IEC 61850

4 Intro: TR IEC The NWIP (IEC : Deterministic Networking Technologies) has been approved in 2017 A Task Force has started to develop the Technical Report on Deterministic Networking The TR will cover LAN (Substation Automation Network) and WAN uses cases and profiles Utility, Communication, and Device Experts (IED) are participating in this effort Liaisons with SC65C and with JWG IEC/IEEE & 802.1TSN in place/planned Compatibility and brown-field deployments are key concerns 4

5 TF : Artefacts IEC Draft (+comments) and finalized Problem Statement Use case document (v14) as pre-work Proposal (Traffic Type Mapping) Questionnaire (sent to utility experts and to CIGRE B5 WG) Problems with existing solutions and technologies Improvements for current applications from using the capabilities of deterministic communication technologies and possible future applications Questions related to Network Infrastructure and Topology (Substation-LAN and WAN) IEEE H30 WG feedback on Ethernet reliability PacWorld Article (provided by Hubert Kirrmann) IEEE White Paper (provided by Chris Huntley) PacWorld Article (provided by Patrick Wetterwald & Maik Seewald) 5

6 TF : Content Problem Statement Determinism and converged networking Support and improvements for existing use cases (Substation, WAN) New use cases and opportunities (Converged Networking) Deterministic networking technologies (Overview) Relation of TSN to technologies such as SDN (Software Defined Networking) and NFV (Network Function Virtualization) Use Cases related to non-functional requirements: Usability, Manageability, Network Security, Multi-Service Architecture Utility Automation Profile Interoperability and Brownfield considerations 6

7 TF : Current LAN-Architecture (in a nutshell) Currently, the power automation industry uses a packet switched architecture (especially in substation automation) supported by high-speed Ethernet. In order to achieve the delay and packet loss requirements, the network bandwidth is overprovisioned, this providing very low efficiency in terms of resource usage. Source: IEC TC57 WG10-IEC

8 TF : TSN-Benefits Deterministic Network Application Requirements Quality Attributes Multi-Service Capabilities Network convergence with best effort traffic Meets latency budget Network optimization Flexible Topologies Synchro-phasor traffic over station bus Seamless redundancy on a single mesh network No asymmetric delay Zero jitter Usability Simplified engineering SV over process bus Seamless redundancy for individual streams Zero congestion loss Cyber security enhancements GOOSE over process bus 8

9 TF : Objectives Support and improvements for existing use cases (Substation, WAN) Address new use cases and opportunities (Multi-Service capabilities based on converged networking) Utility Automation Profile in synch with IEC/IEEE Interoperability and Brownfield is key! 9

10 INTERNATIONAL ELECTROTECHNICAL COMMISSION Questions?