1、IEC/IEEE 61850-9-3 Edition 1.0 2016-05 INTERNATIONAL STANDARD Communication networks and systems for power utility automation Part 9-3: Precision time protocol profile for power utility automation IEC/IEEE61850-9-3:2016-05(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switz
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12、Edition 1.0 2016-05 INTERNATIONAL STANDARD Communication networks and systems for power utility automation Part 9-3: Precision time protocol profile for power utility automation INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.200 IEEE ISBN 978-1-5044-2017-4; STD20937 Warning! Make sure that you obt
13、ained this publication from an authorized distributor. Registered trademark of the International Electrotechnical Commission 2 IEC/IEEE 61850-9-3:2016 IEC/IEEE 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references. 6 3 Terms, definitions, abbreviations, acronyms, and conventio
14、ns 6 3.1 Terms and definitions 6 3.2 Abbreviations and acronyms 8 4 Identification 8 5 Clock types . 8 6 Protocol specifications . 9 7 Requirements 9 7.1 Measurement conditions 9 7.2 Network time inaccuracy . 9 7.3 Network elements . 10 7.4 Requirements for grandmasters . 10 7.4.1 Grandmaster time i
15、naccuracy . 10 7.4.2 Grandmaster holdover 10 7.4.3 Grandmaster clockQuality in start-up, holdover and recovery 10 7.4.4 Grandmaster traceable flags 10 7.5 Requirements for TCs . 10 7.6 Requirements for BCs . 11 7.6.1 BC time inaccuracy 11 7.6.2 BC as free-running grandmaster . 11 7.6.3 BC as master
16、in holdover . 11 7.7 Requirements for media converters . 11 7.8 Requirements for links . 11 7.9 Network engineering . 12 8 Default settings . 13 9 Redundant clock handling 13 10 Protocol Implementation Conformance Statement (PICS) . 13 10.1 Conventions 13 10.2 PICS . 14 Table 1 PTP attributes for th
17、e power utility automation profile . 13 Table 2 PICS for clocks 14 IEC/IEEE 61850-9-3:2016 3 IEC/IEEE 2016 COMMUNICATION NETWORKS AND SYSTEMS FOR POWER UTILITY AUTOMATION Part 9-3: Precision time protocol profile for power utility automation FOREWORD 1) The International Electrotechnical Commission
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36、e 57, Power systems management and associated information exchange, in cooperation with 4 IEC/IEEE 61850-9-3:2016 IEC/IEEE 2016 IEC subcommittee 65C, Industrial networks, and with IEEE Power Systems Relaying Committee Working Group H24/Substation Committee Working Group C7, of the Power all ports in
37、 the MASTER state, in which case the BC is the grandmaster. IEC/IEEE 61850-9-3:2016 9 IEC/IEEE 2016 NOTE 1 Within a time domain, a BC has a port in the SLAVE state in the upper subdomain and one or several ports in the MASTER state in the lower subdomain(s) (see IEC TR 61850-90-4). NOTE 2 A BC filte
38、rs the messages that are forwarded from one subdomain to the other(s). A BC does not propagate event messages, but does propagate management messages. A BC propagates selected TLVs such as ALTERNATE_TIME_OFFSET_INDICATOR (ATOI) from one subdomain to the next, but these TLVs are attached to different
39、 Announce messages. 6 Protocol specifications All clocks shall transmit PTP messages according to IEC 61588:2009 IEEE Std 1588-2008, Annex F (Transport of PTP over IEEE 802.3 /Ethernet). All clocks shall support the delay measurement defined in IEC 61588:2009 IEEE Std 1588-2008, 10.3 and 11.4 (Peer
40、delay mechanism). All clocks shall support the PTP timescale defined in IEC 61588:2009 IEEE Std 1588-2008, 7.2.2 (based on TAI). All singly attached clocks shall support the default best master clock algorithm in IEC 61588:2009 IEEE Std 1588-2008, 9.3.2, 9.3.3 and 9.3.4. All doubly attached clocks a
41、ccording to IEC 62439-3:2016 shall support in addition the extension to the best master clock algorithm defined in IEC 62439-3:2016, Annex A. All clocks shall support both 1-step and 2-step synchronization on ingress, they may use 1-step or 2-step synchronization on egress. All clocks shall support
42、at least one of the three management mechanisms, as stated in IEC 61588:2009 IEEE Std 1588-2008, 15.1.1: 1) the alternate management mechanism using the SNMP MIB specified in IEC 62439-3:2016, Annex E, and/or 2) the alternate management mechanism using the management objects defined in IEC TR 61850-
43、90-4:2013, 19.3 and 19.4, and/or 3) the manufacturer-defined fixed values and/or the manufacturer-specific implementation means to address all configurable values. For testing purposes, it is recommended to equip clocks with a 1 PPS output, see 7.9. 7 Requirements 7.1 Measurement conditions Steady s
44、tate is defined as 30 s after a single master starts to send synchronization messages and 16 s after a change of master, with no change to the environment temperature. This definition applies only to clocks that have been energized for 30 minutes to accommodate, for instance, temperature-controlled
45、oscillators. 7.2 Network time inaccuracy The following requirements on the network elements aim at achieving a network time inaccuracy better than r1 Ps after crossing approximately 15 TCs or 3 BCs. 10 IEC/IEEE 61850-9-3:2016 IEC/IEEE 2016 7.3 Network elements All network elements shall be clocks ac
46、cording to this part of IEC 61850, conformant media converters and/or conformant links. 7.4 Requirements for grandmasters 7.4.1 Grandmaster time inaccuracy A grandmaster-capable clock shall have a time inaccuracy measured between its applied time reference signal and the produced synchronization mes
47、sages that is smaller than 250 ns. NOTE This value corresponds to an IEC 61588:2009 IEEE Std 1588-2008 clockAccuracy of 22 hex. In case the grandmaster-capable clock has no time reference signal, IEC 61588:2009 IEEE Std 1588-2008, J.4.4.1 shall apply. 7.4.2 Grandmaster holdover A grandmaster shall r
48、emain within the time inaccuracy of 7.4.1 for a holdover time of at least 5 s after losing its time reference signal, given that it was in steady state. 7.4.3 Grandmaster clockQuality in start-up, holdover and recovery A grandmaster clock shall adjust its clockClass according to IEC 61588:2009 IEEE
49、Std 1588-2008, Table 5 with the values: 6 while synchronized to its time reference signal and in steady state; 7 after loss of its time reference signal, while in holdover; 52 after loss of its time reference signal, when its time error exceeds 7.4.1; 187 after loss of its time reference signal, when its time error exceeds 1 Ps; 6 after recovering the time reference signal and in steady state. NOTE 1 This modifies IEC 61588:2009 IEEE Std 1588-2008, Table 5 with the timing requirements of this profile. NOTE 2 The cl
