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BSI PD IEC/TR 61850-7-510:2012

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Communication networks and systems for power utility automation – Basic communication structure. Hydroelectric power plants. Modelling concepts and guidelines

Published By Publication Date Number of Pages
BSI 2012 86
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This part of IEC 61850 is intended to provide explanations on how to use the Logical Nodes defined in IEC 61850-7-410 as well as other documents in the IEC 61850 series to model complex control functions in power plants, including variable speed pumped storage power plants.

IEC 61850-7-410 introduced the general modelling concepts of IEC 61850 to hydroelectric power plants. It is however not obvious from the standard how the modelling concepts can be implemented in actual power plants.

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
12 3 Overall communication structure in a hydropower plant
3.1 Abstract communication structure
3.2 Communication network
Figures
Figure 1 – Structure of a hydropower plant
13 Tables
Table 1 – IED within a simplified single unit power plant
14 3.3 Operational modes
Figure 2 – Simplified network of a hydropower plant
15 3.4 Fundamental control strategies
16 3.5 Hydro power plant specific information
Figure 3 – Principles for the joint control function
17 Figure 4 – Water flow control of a turbine
18 4 Structuring control systems
4.1 Basic use of logical nodes
4.2 Logical device modelling
Table 2 – Recommended LN prefixes
20 Figure 5 – Pressurised oil systems with LD suffix and with LN prefix
21 4.3 Example of application for an excitation system
4.3.1 General
Figure 6 – Examples of logical nodes used in an excitation system
22 Table 3 – Logical device structure
23 Figure 7 – Example of logical devices of the regulation part of an excitation system
24 4.3.2 Voltage regulation example
Figure 8 – AVR basic regulator
Figure 9 – Superimposed regulators, power factor regulator
25 Figure 10 – Superimposed regulators, over-excitation limiter
Figure 11 – Superimposed regulators, under-excitation limiter
26 4.3.3 PSS example
Figure 12 – Superimposed regulators, follow up
Figure 13 – Power system stabilizer function
27 4.4 Example of application for a turbine governor system
4.4.1 Conditions of this example
4.4.2 Signal hierarchy
Figure 14 – Signal hierarchy
28 4.4.3 Basic overview
Table 4 – Logical device names for functions
29 Figure 15 – Use of Logical Node HGOV
30 4.4.4 Detailed description of used structure
31 Figure 16 – Governor control
32 Figure 17 – Flow control
33 Figure 18 – Level control
34 Figure 19 – Speed control
35 Figure 20 – Limitations
Figure 21 – Actuator control
36 4.5 Examples of how to reference a start / stop sequencer of a unit
4.5.1 General
4.5.2 Unit sequences definition with IEC 61850
Figure 22 – Sequencer overview
37 4.5.3 Start sequence from a state “stopped” to a state “speed no load not excited” (included in LD named “SEQ_SnlNexStr”)
Table 5 – Typical sequences
39 4.5.4 Start sequence from state “speed no load not excited” to state “generation” (included in LD named “SEQ_SnlExcStr” and “SEQ_GenStr”)
40 4.5.5 Stop sequence from state “generator” to state “speed no load not excited” (included in LD named “SEQ_GridFaultStop”)
42 4.5.6 Shutdown sequence from state “generator” to state “stopped” (SEQ_NormalStop)
44 4.5.7 Quick shutdown sequence from state “generator” to state “stopped” (SEQ_QuickStop)
47 4.5.8 Emergency shutdown sequence from state “generator” to state “stopped” (SEQ_EmgStop)
49 5 Variable speed system example
5.1 Example of block diagrams and logical nodes of variable speed pumped storage system
Figure 23 – Typical block diagram in pumping operation
50 Figure 24 – Typical block diagram in generating operation
Figure 25 – Typical block diagram in synchronous condenser mode
51 5.2 Example of application for an excitation system of variable speed pumped storage
5.2.1 General
5.2.2 Automatic power regulator example
Figure 26 – Automatic power regulator
52 5.2.3 Power detector example
5.2.4 Gate pulse generator example
Figure 27 – Power detector
Figure 28 – Gate pulse generator
53 5.3 Example of governor system
5.3.1 Guide vane opening function example
Figure 29 – Guide vane opening function
54 5.3.2 Guide vane controller example
Figure 30 – Guide vane controller
55 5.3.3 Speed controller example
5.3.4 Optimum speed function example
Figure 31 – Speed controller
Figure 32 – Optimum speed function
56 5.4 Example of how to reference a start / stop sequencer for variable speed pumped storage system
5.4.1 Unit sequences definition for conventional and variable speed pumped storage
Figure 33 – Sequencer overview
Table 6 – Logical device names for sequence function groups
57 5.4.2 Start sequence from a state “Stopped” to a state “Synchronous Condenser (SC) mode in pump direction”
58 5.4.3 Start sequence from a state “Synchronous Condenser (SC) mode in Pump direction” to a state “Pumping”
59 5.4.4 Mode Transition sequence from a state “Pumping” to a state “Synchronous Condenser (SC) mode in Pump direction”
60 5.4.5 Sequence from a state “pumping” to a state “stopped”
62 5.4.6 Emergency shutdown sequence from a state “pumping” to a state “stopped”
63 5.4.7 Shutdown sequence from a state “Synchronous Condenser (SC) mode in pump direction” to a state “stopped”
64 5.4.8 Emergency shutdown sequence from a state “Synchronous Condenser (SC) mode in pump direction” to a state “stopped”
66 6 Pump start priorities of a high pressure oil system
6.1 Example of a pump start priority for high pressure oil system
6.1.1 General
6.1.2 Sequence to manage a pump start priorities
Figure 34 – Graphical representation of the high pressure oil pumping unit
68 Figure 35 – Example of pump priority start logic sequence
69 6.1.3 Sequence to manage a pump
70 7 Addressing structures, examples of mapping
7.1 Basic principles (IEC 61850-6)
7.2 Decentralised ICD file management
Figure 36 – Example of pump start logic sequence
71 7.3 Centralised ICD file management
Figure 37 – Exchange of ICD files between system configurators
72 7.4 Power plant structure – ISO/TS 16952-10 (Reference Designation System – Power Plants)
7.4.1 ISO/TS 16952-10 (Reference Designation System – Power Plants)
Figure 38 – Static Data exchange with vendor’s configuration tool
73 Table 7 – RDS-PP designation codes for Hydropower use
74 Figure 39 – Tree structure of a system using RDS-PP
75 7.4.2 Example 1: Wicket gate indications
76 7.4.3 Example 2: 3 Phase Measurement
7.4.4 Example 3: Speed Controller
77 7.4.5 Example 4: Speed measurement with some thresholds
78 7.4.6 Example 5: Common turbine information
8 Examples of how to use various types of curves and curve shape descriptions
79 Figure 40 – Hydraulic correlation curve
82 9 Examples of voltage matching function
Figure 41 – Turbine correlation curve
Figure 42 – Example of traditional voltage adjusting pulses
Figure 43 – Example of mapping of the pulse time in IEC 61850
83 Figure 44 – Example of an IEC 61850 voltage adjusting command
84 Bibliography
BSI PD IEC/TR 61850-7-510:2012
$215.11