BSI PD IEC/TR 61850-80-3:2015
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Communication networks and systems for power utility automation – Mapping to web protocols. Requirements and technical choices
Published By | Publication Date | Number of Pages |
BSI | 2015 | 94 |
This part of IEC 61850, which is a technical report, describes the requirements and gives an overview of the technical solution for using Web Protocols as a new communication mapping (SCSM) for the IEC 61850 standard.
NOTE The notion of Web Protocols covers here the Web Services technologies, extended by other well deployed technologies based on standards used in the IT domain (IETF, ISO, W3C, OASIS, etc.). The advantage is that due to a lot of professional knowledge and practical experiences in the IT world the risk of non-interoperable solutions in the smart grid domain will decrease.
The structure of this part of IEC 61850 illustrates a two-step approach:
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Collection of the use cases and requirements based upon emerging Smart Grid architectural considerations, taking into account the new extended scope of IEC 61850. Clause 6 proposes a synthesis of the global requirements, while the use cases of the various domains are described in Annex A. The considered domains are:
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PV-inverters
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Hydro and thermal generation
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Wind power plants
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Combined Heat and Power (CHP)
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Smart customers
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E-Mobility
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Virtual Power Plants (VPP) and micro grids
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Feeder automation
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Evaluation and selection of technologies in order to build a consistent SCSM. Clause 7 presents the future SCSM 8-2, including an overview of the main selected technology: XMPP. The following goals have been particularly considered for the definition of this SCSM:
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Identify a single profile supporting all the services required by the domains and defined today in ACSI.
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Cover the full life cycle of a IEC 61850 system, in collaboration with the System Management work in WG10 (from configuration, through conformance testing, down to maintenance). For this purpose, this part of IEC 61850 may recommend some changes to other parts of the IEC 61850 series such as Parts 6 and 10, etc.
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Deploy cyber-security to ensure a secure environment (in compliance with the IEC 62351 series).
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Propose rules for cohabitation with other mappings such as IEC 61850-8-1 and IEC 61850-9-2, and possibly recommend communication profiles depending on specific application context (pole-top equipment, inside DER, connection of DER, etc.).
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Only the A-Profile is addressed here. Nevertheless, support of TCP/IP and UDP/IP is required for the T-Profiles.
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What is not included in the study:
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Modification of objects specified in IEC 61850-7-3 and IEC 61850-7-4
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Introduction of several competing web protocols profiles
The namespace of this document is: โ(Tr)IEC 61850-80-3:2015โ
PDF Catalog
PDF Pages | PDF Title |
---|---|
4 | CONTENTS |
8 | FOREWORD |
10 | INTRODUCTION |
11 | 1 Scope |
12 | 2 Normative references |
13 | 3 Terms and definitions |
14 | 4 Abbreviated terms 5 Main involved sub-systems and stakeholders |
15 | Figures Figure 1 โ Architecture overview Tables Table 1 โ Main involved sub-systems and stakeholders |
16 | 6 Requirements description 6.1 General 6.2 Scope of this clause 6.2.1 ACSI classes to be mapped |
17 | 6.2.2 Network type 6.3 Requirements list 6.3.1 Transfer time 6.3.2 Throughput 6.3.3 Data integrity (error probability) 6.3.4 Reliability 6.3.5 Availability |
18 | 6.3.6 Interoperability 6.3.7 Cyber security |
19 | 6.3.8 Device size 6.3.9 Dynamic extension of the system 6.3.10 Sensitivity to cost of bandwidth 6.3.11 Availability of commercial and open source tools Figure 2 โ Device communicating with different trust levels |
20 | 6.3.12 Intellectual property 6.3.13 Perenniality / Stability of the solution 6.3.14 Request for additional resources and engineering 6.3.15 Simplicity and easy implementation of the communication solution 6.3.16 Ability to become a SCSM / Difficulty in filling the gap 6.3.17 One single solution for all smart grid applications 6.3.18 Products’ time-to-market |
21 | 6.3.19 Minimize standardization effort 7 SCSM technical description 7.1 Technology assessment and choice |
22 | 7.2 XMPP overview 7.2.1 Principles Figure 3 โ Architecture main choices |
23 | 7.2.2 Address scheme 7.2.3 Scalability and redundancy Figure 4 โ XMPP architecture overview |
24 | 7.2.4 Server federation 7.2.5 Stanza example Figure 5 โ XMPP Federation |
25 | 7.2.6 Presence monitoring 7.3 Communication stack overview Figure 6 โ Example of a XMPP telegram |
26 | Figure 7 โ Simplified communication stack Table 2 โ ACSI services to be mapped |
27 | 7.4 Definition of the XML payload Table 3 โ MMS objects and services in use within this SCSM |
28 | Figure 8 โ XER encoding vs BER encoding |
29 | Figure 9 โ ASN.1 abstract definition of MMS PDUs (extract) Figure 10 โ Example of XER payloads |
30 | 7.5 Transport of XML payloads over XMPP 7.5.1 Mapping over XMPP overview Figure 11 โ ACSI XML Message schema for XER payload (extract) |
31 | 7.5.2 Rules for mapping solicited services Figure 12 โ XMPP architecture for IECย 61850 |
33 | 7.5.3 Mapping of unsolicited services 7.5.4 Usage of presence monitoring |
34 | 7.6 Cyber security 7.6.1 Security with XMPP Figure 13 โ XMPP using TLS and Simple Authentication and Security Layer (SASL) |
35 | 7.6.2 Choice of technical solutions for security 7.7 Mapping synthesis Figure 14 โ End to end security over XMPP |
36 | Figure 15 โ Synthesis of SCSM 8-2 structure Table 4 โ Mapping synthesis |
37 | 7.8 Synergy with existing 8-1 mapping Figure 16 โ SCSM 8-1 and 8-2 synergy |
38 | Figure 17 โ Control center with dual stack SCSM 8-1 / SCSM 8-2 |
39 | Figure 18 โ Gateway between SCSM 8-1 and SCSM 8-2 |
40 | Annex A (informative) Use cases and requirements for each domain A.1 Use cases for PV-inverters A.1.1 Scope of this clause A.1.2 Architecture overview Figure A.1 โ PV โ Architecture overview for data connections to an industrial plant |
41 | A.1.3 Use cases Figure A.2 โ PV โ Architecture overview for data connections to a residential plant Table A.1 โ Use case list |
42 | A.2 Use cases for hydro and thermal generation A.2.1 Scope of this clause A.2.2 Architecture overview |
43 | A.2.3 Use cases Figure A.3 โ Power plants โ Typical power operator network architecture Figure A.4 โ Power plants โ Relationship between the actors |
44 | Table A.2 โ Power plants โ Use case list |
45 | A.3 Use cases for wind power A.3.1 Scope of this clause A.3.2 Architecture overview |
46 | Figure A.5 โ Examples of the variety of topologies required/supported for wind power Figure A.6 โ Example of use within the wind plant |
47 | Figure A.7 โ Example of use between the wind plant and a control center Figure A.8 โ Diagram of data use hierarchy levels in condition monitoring |
48 | A.3.3 Use cases Table A.3 โ Wind โ List of actors |
49 | Table A.4 โ Wind โ Use case list |
51 | A.4 Use cases for CHP A.4.1 Scope of this clause |
52 | A.4.2 Architecture overview Figure A.9 โ Types of CHP plants |
53 | Figure A.10 โ CHP โ Example of a system architecture |
54 | Figure A.11 โ Number of CHPs in Germany |
55 | Figure A.12 โ CHP use cases and involved actors |
56 | A.4.3 Use cases Table A.5 โ CHP โ Use case list |
57 | Figure A.13 โ CHP โ Graphical presentation of frequency control within the European power system Figure A.14 โ CHP โ Frequency control time characteristic |
61 | A.4.4 References for CHP domain A.5 Use cases of domain Smart Customer (DR) A.5.1 Scope of this clause Table A.6 โ CHP โ Other use cases not feasible with existing ACSI |
62 | A.5.2 Architecture overview Figure A.15 โ Smart customer โ Main actors |
63 | Figure A.16 โ Smart customer โ Main elements ofthe smart customer domain (right column) Figure A.17 โ Smart customer โ Logical model for customer premises communications |
64 | A.5.3 Use cases Figure A.18 โ Smart customer โ Communication relationships |
65 | Table A.7 โ Smart customer โ Use case list Table A.8 โ Smart customer โ Other use cases not feasible with existing ACSI |
66 | A.6 Use cases for E-Mobility A.6.1 Scope of this clause A.6.2 Architecture overview A.6.3 Use cases Figure A.19 โ E-Mobility โ Architecture overview |
67 | Table A.9 โ E-Mobility โ Use case list |
72 | A.7 Use cases for VPP and Microgrid A.7.1 Scope of this clause |
73 | A.7.2 Architecture overview Figure A.20 โ Architectural picture of a microgrid |
74 | A.7.3 Use cases Figure A.21 โ Architectural picture of a VPP Table A.10 โ VPP/Microgrid โ Use case list |
75 | Table A.11 โ VPP/Microgrid โ Other use cases not feasible with existing ACSI |
76 | A.8 Use cases for feeder automation A.8.1 Scope of this clause A.8.2 Architecture overview |
77 | Figure A.22 โ FA โ Distributed architecture of a feeder automation system |
78 | Figure A.23 โ FA โ Semi-centralized architecture of a feeder automation system |
79 | Figure A.24 โ FA โ Centralized architecture of a feeder automation system |
80 | A.8.3 Use cases Table A.12 โ FA โ Use case list |
81 | A.9 Required services and performances Table A.13 โ FA โ Other use cases not feasible with existing ACSI Table A.14 โ Synthesis โ Usage of modeling classes |
82 | Table A.15 โ Synthesis of transfer times |
83 | Table A.16 โ Synthesis โ New proposed functions |
84 | Annex B (informative) Examples of MMS XER payloads B.1 General B.2 GetLogicalNodeDirectory |
90 | B.3 Report |