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BS EN 61850-7-1:2011

$256.21

Communication networks and systems for power utility automation – Basic communication structure. Principles and models

Published By Publication Date Number of Pages
BSI 2011 140
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IEC 61850-7-1:2011 introduces the modelling methods, communication principles, and information models that are used in the various parts of the IEC 61850-7 series. The purpose is to provide – from a conceptual point of view – assistance to understand the basic modelling concepts and description methods for: – substation-specific information models for power utility automation systems, – device functions used for power utility automation purposes, and – communication systems to provide interoperability within power utility facilities. Compared to the first edition, this second edition introduces: – the model for statistical and historical statistical data, – the concepts of proxies, gateways, LD hierarchy and LN inputs, – the model for time synchronisation, – the concepts behind different testing facilities, – the extended logging function. It also clarifies certain items.

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PDF Pages PDF Title
7 English

CONTENTS
13 INTRODUCTION
14 1 Scope
15 2 Normative references
16 3 Terms and definitions
4 Abbreviated terms
17 5 Overview of the IEC 61850 series concepts
5.1 Objective
Figures

Figure 1 – Relations between modelling and mapping parts of the IEC 61850 series
19 5.2 Topology and communication functions of substation automation systems
5.3 The information models of substation automation systems
Figure 2 – Sample substation automation topology
20 Figure 3 – Modelling approach (conceptual)
21 5.4 Applications modelled by logical nodes defined in IEC 61850-7-4
Tables

Table 1 – LN groups
23 Figure 4 – Logical node information categories
Figure 5 – Build-up of devices (principle)
24 5.5 The semantic is attached to data
Figure 6 – Position information depicted as a tree (conceptual)
26 5.6 The services to exchange information
Figure 7 – Service excerpt
27 5.7 Services mapped to concrete communication protocols
28 5.8 The configuration of the automation system
Figure 8 – Example of communication mapping
29 5.9 Summary
Figure 9 – Summary
30 6 Modelling approach of the IEC 61850 series
6.1 Decomposition of application functions and information
Figure 10 – Decomposition and composition process (conceptual)
31 6.2 Creating information models by stepwise composition
32 Table 2 – Logical node class XCBR (conceptual)
33 Figure 11 – XCBR1 information depicted as a tree
34 6.3 Example of an IED composition
6.4 Information exchange models
Figure 12 – Example of IED composition
35 Figure 13 – Output and input model (principle)
36 Figure 14 – Output model (step 1) (conceptual)
37 Figure 15 – Output model (step 2) (conceptual)
Figure 16 – GSE output model (conceptual)
38 Figure 17 – Setting data (conceptual)
39 Table 3 – Excerpt of integer status setting
40 Figure 18 – Input model for analogue values (step 1) (conceptual)
41 Figure 19 – Range and deadbanded value (conceptual)
42 Figure 20 – Input model for analogue values (step 2) (conceptual)
43 Figure 21 – Reporting and logging model (conceptual)
44 Figure 22 – Data set members and reporting
Table 4 – Comparison of the data access methods
45 Figure 23 – Buffered report control block (conceptual)
46 Figure 24 – Buffer time
47 Figure 25 – Data set members and inclusion-bitstring
Figure 26 – Log control block (conceptual)
48 Figure 27 – Peer-to-peer data value publishing model (conceptual)
50 Figure 28 – Conceptual model of statistical and historical statistical data (1)
52 Figure 29 – Conceptual model of statistical and historical statistical data (2)
54 Figure 30 – Concept of the service tracking model – Example: control service tracking
55 7 Application view
7.1 General
Figure 31 – Real world devices
56 7.2 First modelling step – Logical nodes and data
Figure 32 – Logical nodes and data (IEC 61850-7-2)
58 Figure 33 – Simple example of modelling
Figure 34 – Basic building blocks
59 Figure 35 – Logical nodes and PICOM
Figure 36 – Logical nodes connected (outside view in IEC 61850-7-x series)
60 7.3 Mode and behaviour of a logical node
7.4 Use of measurement ranges and alarms for supervision functions
Figure 37 – Mode and behaviour data (IEC 61850-7-4)
61 7.5 Data used for limiting the access to control actions
7.6 Data used for blocking functions described by logical nodes
7.7 Data used for logical node inputs/outputs blocking (operational blocking)
Figure 38 – Data used for limiting the access to control actions (IEC 61850-7-4)
63 7.8 Data used for testing
Figure 40 – Data used for receiving simulation signals
64 Figure 41 – Example of input signals used for testing
65 7.9 Logical node used for extended logging functions
Figure 42 – Test mode example
66 8 Device view
8.1 General
Figure 43 – Logical node used for extended logging functions (GLOG)
67 8.2 Second modelling step – logical device model
Figure 44 – Logical device building block
69 Figure 46 – The common data class DPL
70 Figure 47 – Logical devices in proxies or gateways
71 Figure 48 – Logical devices for monitoring external device health
72 Figure 49 – Logical devices management hierarchy
73 9 Communication view
9.1 General
9.2 The service models of the IEC 61850 series
74 Figure 50 – ACSI communication methods
Table 5 – ACSI models and services
75 9.3 The virtualisation
76 9.4 Basic information exchange mechanisms
Figure 51 – Virtualisation
Figure 52 – Virtualisation and usage
77 Figure 53 – Information flow and modelling
Figure 54 – Application of the GSE model
78 9.5 The client-server building blocks
Figure 55 – Server building blocks
79 Figure 56 – Interaction between application processand application layer (client/server)
Figure 57 – Example for a service
80 9.6 Logical nodes communicate with logical nodes
Figure 58 – Client/server and logical nodes
Figure 59 – Client and server roles
81 9.7 Interfaces inside and between devices
Figure 60 – Logical nodes communicate with logical nodes
82 10 Where physical devices, application models and communication meet
Figure 61 – Interfaces inside and between devices
84 11.2 Example 1 – Logical node and data class
Figure 63 – Refinement of the DATA class
85 Table 6 – Logical node circuit breaker
86 Table 7 – Controllable double point (DPC)
87 Figure 64 – Instances of a DATA class (conceptual)
88 11.3 Example 2 – Relationship of IEC 61850-7-2, IEC 61850-7-3, and IEC 61850-7-4
Figure 65 – Relation between parts of the IEC 61850 series
89 12 Formal specification method
12.1 Notation of ACSI classes
Table 8 – ACSI class definition
90 12.2 Class modelling
Figure 66 – Abstract data model example for IEC 61850-7-x
91 Table 9 – Single point status common data class (SPS)
92 Table 10 – Quality components attribute definition
Table 11 – Basic status information template (excerpt)
93 Figure 67 – Relation of TrgOp and Reporting
Table 12 – Trigger option
94 Table 13 – GenLogicalNodeClass definition
95 12.3 Service tables
Figure 68 – Sequence diagram
96 12.4 Referencing instances
Figure 69 – References
97 Figure 70 – Use of FCD and FCDA
98 Figure 71 – Object names and object reference
99 13 Name spaces
13.1 General
Figure 72 – Definition of names and semantics
100 13.2 Name spaces defined in the IEC 61850-7-x series
Figure 73 – One name with two meanings
101 Figure 74 – Name space as class repository
102 Figure 75 – All instances derived from classes in a single name space
103 Figure 76 – Instances derived from multiple name spaces
Figure 77 – Inherited name spaces
104 13.3 Specification of name spaces
105 13.4 Attributes for references to name spaces
106 Table 14 – Excerpt of logical node name plate common data class (LPL)
Table 15 – Excerpt of common data class
107 14 Common rules for new version of classes and for extension of classes
14.1 General
14.2 Basic rules
108 14.3 Rules for LN classes
Figure 78 – Basic extension rules diagram
110 14.4 Rules for common data classes and control block classes
111 14.5 Multiple instances of LN classes for dedicated and complex functions
112 14.6 Specialisation of data by use of number extensions
14.7 Examples for new LNs
14.8 Example for new Data
113 Annex A (informative)
Overview of logical nodes and data
114 Table A.1 – Excerpt of data classes for measurands
115 Table A.2 – List of common data classes (excerpt)
116 Annex B (informative)
Allocation of data to logical nodes
Figure B.1 – Example for control and protection LNs combined in one physical device
117 Figure B.2 – Merging unit and sampled value exchange (topology)
Figure B.3 – Merging unit and sampled value exchange (data)
119 Annex C (informative)
Use of the substation configuration language (SCL)
Figure C.1 – Application of SCL for LNs (conceptual)
120 Figure C.2 – Application of SCL for data (conceptual)
121 Annex D (informative)
Applying the LN concept to options for future extensions
Figure D.1 – Seamless communication (simplified)
122 Figure D.2 – Example for new logical nodes
124 Figure D.3 – Example for control center view and mapping to substation view
126 Annex E (informative)
Relation between logical nodes and PICOMs
Figure E.1 – Exchanged data between subfunctions (logical nodes)
Figure E.2 – Relationship between PICOMS and client/server model
127 Annex F (informative)
Mapping the ACSI to real communication systems
Figure F.1 – ACSI mapping to an application layer
128 Figure F.2 – ACSI mappings (conceptual)
130 Figure F.5 – Mapping approach
131 Figure F.6 – Mapping detail of mapping to a MMS named variable
Figure F.7 – Example of MMS named variable (process values)
132 Figure F.8 – Use of MMS named variables and named variable list
133 Figure F.9 – MMS information report message
134 Figure F.10 – Mapping example
135 Bibliography
BS EN 61850-7-1:2011
$256.21