IEC TR 61850-90-4:2013

IEC/TR 61850-90-4 ®
Edition 1.0 2013-08
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –
Part 90-4: Network engineering guidelines

IEC/TR 61850-90-4:2013(E)
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IEC/TR 61850-90-4 ®
Edition 1.0 2013-08
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –

Part 90-4: Network engineering guidelines

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XH
ICS 33.200 ISBN 978-2-8322-0903-5

– 2 – TR 61850-90-4 © IEC:2013(E)
CONTENTS
FOREWORD . 12
INTRODUCTION . 14
1 Scope . 15
2 Normative references . 16
3 Terms, definitions, abbreviations and conventions . 19
3.1 Terms and definitions . 19
3.2 Abbreviations . 22
3.3 Conventions . 25
3.3.1 Network diagram symbols . 25
3.3.2 Port and link symbols . 26
3.3.3 Bridges symbols . 26
4 Overview of IEC 61850 networks . 27
4.1 Logical allocation of functions and interfaces . 27
4.2 IEC 61850 protocol stack . 29
4.2.1 General . 29
4.2.2 IEC 61850 traffic classes . 29
4.2.3 MMS protocol . 30
4.2.4 GOOSE protocol . 30
4.2.5 SV protocol . 32
4.3 Station bus and process bus . 32
5 Network design checklist . 34
5.1 Design principles . 34
5.2 Engineering flow . 34
5.3 Checklist to be observed . 35
5.3.1 Summary . 35
5.3.2 Environmental issues . 36
5.3.3 EMI immunity . 36
5.3.4 Form factor . 36
5.3.5 Physical media . 36
5.3.6 Substation application and network topology . 36
5.3.7 Redundancy . 37
5.3.8 Reliability, availability, maintainability . 37
5.3.9 Logical data flows and traffic patterns . 37
5.3.10 Latency for different types of traffic . 37
5.3.11 Performance . 37
5.3.12 Network management . 38
5.3.13 Network supervision . 38
5.3.14 Time synchronization and accuracy . 38
5.3.15 Remote connectivity . 38
5.3.16 Cyber security . 38
5.3.17 Scalability, upgradeability and future-proof . 39
5.3.18 Testing . 39
5.3.19 Cost . 39
6 Ethernet technology for substations . 39
6.1 Ethernet subset for substation automation . 39
6.2 Topology . 39

TR 61850-90-4 © IEC:2013(E) – 3 –
6.3 Physical layer . 41
6.3.1 Data rate and medium . 41
6.3.2 Full-duplex communication and auto-negotiation . 41
6.3.3 Copper cabling at 100 Mbit/s . 41
6.3.4 Optical cabling at 100 Mbit/s (100BASE-FX) . 42
6.3.5 Optical cabling at 1 Gbit/s (1000BASE-LX) . 44
6.3.6 Copper cabling at 1 Gbit/s . 44
6.4 Link layer . 44
6.4.1 Unicast and multicast MAC addresses . 44
6.4.2 Link layer and bridges . 45
6.4.3 Bridging nodes . 45
6.4.4 Loop prevention and RSTP . 45
6.4.5 Traffic control in the bridges . 47
6.4.6 Unicast MAC address filtering . 47
6.4.7 Multicast MAC address filtering . 47
6.4.8 Virtual LANs (VLANS) traffic control . 48
6.4.9 Comparison VLAN versus multicast filtering. 53
6.4.10 Layer 2 redundancy protocols . 53
6.5 Network layer . 57
6.5.1 Internet protocol . 57
6.5.2 IP public and private addresses . 57
6.5.3 Subnet masks . 58
6.5.4 Network address translation . 59
7 Network and substation topologies . 59
7.1 General rule . 59
7.2 Reference topologies and network redundancy. 60
7.3 Reference topologies . 64
7.3.1 Station bus topologies . 64
7.3.2 Process bus and attachment of primary equipment . 77
7.3.3 Station bus and process bus connection . 92
8 Addressing in the substation . 98
8.1 Network IP address plan for substations . 98
8.1.1 General structure . 98
8.1.2 IP address allocation of NET . 99
8.1.3 IP address allocation of BAY . 100
8.1.4 IP address allocation of device . 100
8.1.5 IP address allocation of devices with PRP . 101
8.2 Routers and GOOSE / SV traffic . 101
8.3 Communication outside the substation . 101
9 Application parameters . 102
9.1 MMS parameters . 102
9.2 GOOSE parameters . 102
9.3 SV parameters . 102
10 Performance . 103
10.1 Station bus performance . 103
10.1.1 Logical data flows and traffic patterns . 103
10.1.2 GOOSE traffic estimation . 104
10.1.3 MMS traffic estimation . 104

– 4 – TR 61850-90-4 © IEC:2013(E)
10.1.4 station bus measurements . 105
10.2 Process bus performance . 106
11 Latency . 106
11.1 Application requirements . 106
11.2 Latency requirements for different types of traffic . 107
11.2.1 Latency requirements in IEC 61850-5 . 107
11.2.2 Latencies of physical paths .
...