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eLibrary > PD IEC TR 61850-7-510:2021 Communication networks and systems for power utility automation - Basic communication structure. Hydroelectric power plants, steam and gas turbines. Modelling concepts and guidelines >

PD IEC TR 61850-7-510:2021 Communication networks and systems for power utility automation - Basic communication structure. Hydroelectric power plants, steam and gas turbines. Modelling concepts and guidelines, 2022

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PD IEC TR 61850-7-510:2021 Communication networks and systems for power utility automation - Basic communication structure. Hydroelectric power plants, steam and gas turbines. Modelling concepts and guidelines, 2022

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CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Overview [Go to Page]
4.1 General
4.2 Target group
4.3 Hydro power domain [Go to Page]
4.3.1 General
4.3.2 Hydropower plant specific information
Figures [Go to Page]
Figure 1 – Principles for the joint control function
Figure 2 – Water flow control of a turbine
4.4 Thermal power domain [Go to Page]
4.4.1 General
4.4.2 Steam turbine power plant specific information
Figure 3 – Example of a large steam turbine [Go to Page]
4.4.3 Gas turbine specific information
Figure 4 – Simplified example of a large steam turbine powerplant with typical control system [Go to Page]
4.4.4 Combined cycle power plants
Figure 5 – Example of a gas turbine
Figure 6 – Example of a combined cycle power plant with one GTand one ST in a multi-shaft configuration [Go to Page]
4.4.5 Coal-fired power plant specific information
Figure 7 – Example of a combined cycle power plant with one GTand one ST in a single shaft configuration
5 Process modelling [Go to Page]
5.1 Reference designation system [Go to Page]
5.1.1 General
5.1.2 Structuring principles and reference designation system
5.1.3 Object ownership principle
Figure 8 – Example of heat flow diagram of a coal-fired power plant [Go to Page]
5.1.4 The concept of aspects
Figure 9 – IEC/ISO 81346 ownership principle
Tables [Go to Page]
Table 1 – IEC/ISO 81346 aspects [Go to Page]
5.1.5 The RDS-structure and classification
Figure 10 – A system breakdown structure showing the recursivephenomenon of system elements also being systems
Figure 11 – Three levels of classes within RDS [Go to Page]
5.1.6 Example: Unit 2 main inlet valve with a bypass system
5.1.7 The top node
Figure 12 – A system breakdown structure for a system of interest
Figure 13 – Example of an RDS top node implementation
5.2 SCL modelling of the functional structure of a hydropower plant
5.3 Mapping the SCL process structure to the reference designation system RDS [Go to Page]
5.3.1 General
Figure 14 – SCL Process elements are structured accordingto the RDS power supply system designations
Figure 15 – SCL Process elements are structured accordingto the RDS construction works designations [Go to Page]
5.3.2 Hierarchical mapping of information
Figure 16 – IED model (LNs) linked to the SCL Processstructure with the power supply system profile
Figure 17 – IED model (LNs) linked to the SCL Processstructure with the construction works profile
Table 2 – Mapping SCL to RDS-PS [Go to Page]
5.3.3 Process object reference design considerations
5.3.4 Choice of logical node classes
5.4 The Alpha Valley River System examples [Go to Page]
5.4.1 Introduction
Figure 18 – The Alpha Valley River System example [Go to Page]
5.4.2 The Reservoirs
Figure 19 – Primary and supporting system to SCL overview
Figure 20 – Mapping between IEC/ISO 81346 (RDS) and IEC 61850 (SCL)
Figure 21 – Reservoir locations
Table 3 – Reservoir descriptions [Go to Page]
5.4.3 Hydrometric
Figure 22 – Mapping of water levels with logical node TLVL
Table 4 – Examples of water level measurements
Figure 23 – Mapping of water levels with logical HLVL
Figure 24 – Mapping of water levels with logical MHYD
Figure 25 – Mapping of the rate of discharge with logical node TFLW
Figure 26 – Mapping of the rate of discharge with logical node HWCL
Table 5 – Examples of the rate of discharge measurements
6 SCL:DataType template modelling [Go to Page]
6.1 General
6.2 LNodeType definition
Figure 27 – Mapping of the rate of discharge with logical node MHYD
6.3 DOType definition
6.4 DAType and EnumType definition
6.5 Example using SLVL
7 SCL:IED modelling [Go to Page]
7.1 General
7.2 Linking the SCL:IED model to the SCL:process model
7.3 Referencing the Logical Device
Figure 28 – The structure of LN SLVL
Figure 29 – Schematic mapping of the process element to IED
7.4 SCL:Function element
8 Communication Modelling [Go to Page]
8.1 General
Figure 30 – Mapping the process element to IED and DataTemplate
Figure 31 – Bus and services example
8.2 Communication structure in hydro power plants [Go to Page]
8.2.1 General
8.2.2 Process bus level
Figure 32 – Hydro bus and services [Go to Page]
8.2.3 Station Bus
8.2.4 Enterprise Bus
8.3 Communication structure in thermal power plants
Figure 33 – Typical communication structure with two GTs and one ST,with the use of IEC 61850 interface controller
Figure 34 – Typical communication structure with two GTs and one ST,with IEC 61850 interface of process controllers
Figure 35 – Typical communication structure with two GTs and one ST, with IEC 61850 interface of process controllers from different manufacturers
9 Modelling of controls [Go to Page]
9.1 General
9.2 Operational modes for hydropower plants
Figure 36 – Typical communication structure with one ST,with IEC 61850 interface of process controllers
9.3 Operational modes for thermal power plants
9.4 Fundamental control strategies for hydropower plants
9.5 Joint control modelling examples [Go to Page]
9.5.1 General
9.5.2 Joint control of active power
Table 6 – Functional breakdown of an RDS component with functions for joint control [Go to Page]
9.5.3 Joint Control of Reactive Power
Figure 37 – Joint Control of active power
Table 7 – Joint Control active power setpoints data flow
Figure 38 – Joint control of reactive power (SCL:Function:Fct2) [Go to Page]
9.5.4 Joint Control of Water
Table 8 – Joint Control reactive power setpoints data flow
9.6 Scheduling Example
Figure 39 – Example of joint control of water
Table 9 – Joint Control flow setpoints data flow
9.7 Example of application for an excitation system [Go to Page]
9.7.1 General
Figure 40 – An example of scheduling of active power output
Figure 41 – Examples of logical nodes used in an excitation system
Table 10 – Functional breakdown of a Process child RDS component with functions
Figure 42 – Example of an excitation a functional breakdown
Figure 43 – Example of logical devices of the regulation part of an excitation system [Go to Page]
9.7.2 Voltage regulation example
Figure 44 – AVR basic regulator
Figure 45 – Superimposed regulators, power factor regulator
Figure 46 – Superimposed regulators, over-excitation limiter
Figure 47 – Superimposed regulators, under-excitation limiter [Go to Page]
9.7.3 PSS example
Figure 48 – Superimposed regulators, follow up
Figure 49 – Power system stabilizer function
9.8 Example of application for a turbine governor system [Go to Page]
9.8.1 General
9.8.2 Signal hierarchy
9.8.3 Basic overview
Figure 50 – Signal hierarchy
Figure 51 – Use of Logical Node HGOV with RDS-PS [Go to Page]
9.8.4 Detailed description of used IED structure
Table 11 – Functional breakdown of a Process child RDS component with functions
Figure 52 – Governor control
Figure 53 – Flow control
Figure 54 – Level control
Figure 55 – Speed control
Figure 56 – Limitations
9.9 Example of a braking system [Go to Page]
9.9.1 General
9.9.2 Brake control with mandatory data objects in LN: HMBR
Figure 57 – Actuator control [Go to Page]
9.9.3 Brake control with process indications
9.10 Example of a heater system [Go to Page]
9.10.1 General
Figure 58 – Brake control with mandatory data objects
Figure 59 – Brake control with indications [Go to Page]
9.10.2 Example of a LN: KHTR usage
9.11 Examples of how to reference a start / stop sequencer of a hydropower unit [Go to Page]
9.11.1 General
Figure 60 – Oil tank heater using a step controller [Go to Page]
9.11.2 Unit sequences definition with IEC 61850
Figure 61 – Sequencer overview
Table 12 – Alpha2 Typical sequences [Go to Page]
9.11.3 Start sequence from a state "stopped" to a state "speed no load not excited" (Sequence 1)
9.11.4 Start sequence from state "speed no load not excited" to state "synchronised" (Sequence 2)
9.11.5 Stop sequence from state "synchronised" to state "speed no load not excited" (sequence 3)
9.11.6 Shutdown sequence from state " synchronised " to state "stopped" (Sequence 4)
9.11.7 Fast shutdown sequence from state " synchronised " to state "stopped" (Sequence 5)
9.11.8 Emergency shutdown sequence from state " synchronised " to state "stopped" (sequence 6)
9.12 Example of a capability chart representation [Go to Page]
9.12.1 General
9.12.2 Example of a capability curve
Figure 62 – An example of a capability curve
Table 13 – Capability table [Go to Page]
9.12.3 Example of a Hill chart
Figure 63 – An example of a Hill chart (five variables)
Table 14 – Mapping of Hill charts [Go to Page]
9.12.4 Example of a multi-layer capability chart
Figure 64 – An example of a multi layered capability chart (five dimensions)
Table 15 – Five-dimensional capability chart
9.13 Pump start priorities of a high-pressure oil system [Go to Page]
9.13.1 General
Figure 65 – Graphical representation of the high-pressure oil pumping unit
Table 16 – Alpha2 Typical pump sequences [Go to Page]
9.13.2 Sequence to manage a pump start priorities
Figure 66 – Example of pump priority start logic sequence [Go to Page]
9.13.3 Sequence to manage a pump
Figure 67 – Example of pump start logic sequence
9.14 Examples of how to use various types of curves and curve shape descriptions
Figure 68 – Gate flow correlation
Figure 69 – Turbine correlation curve
9.15 Examples of voltage matching function
Figure 70 – Example of traditional voltage adjusting pulses
Figure 71 – Example of mapping of the pulse time in IEC 61850
Figure 72 – Example of an IEC 61850 voltage adjusting command
Annex A (informative)Electrical single line diagrams of thermal power plants [Go to Page]
Figure A.1 – Typical Single Line Diagram of a steam turbine power plant
Figure A.2 – Typical Single Line Diagram of a gas turbine power plant or a combined cycle power plant in single shaft configuration
Figure A.3 – Typical Single Line Diagram of a combined cycle power plant in multi-shaft configuration with separate step-up transformers
Figure A.4 – Typical Single Line Diagram of a combined cycle power plant in multi-shaft configuration with 3-winding step-up transformers
Annex B (informative)System Specification Description for the Alpha 2 power plant
Annex C (informative)RDS schema for the Alpha 2 power plant
Bibliography [Go to Page]

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PD IEC TR 61850-7-510:2021 Communication networks and systems for power utility automation - Basic communication structure. Hydroelectric power plants, steam and gas turbines. Modelling concepts and guidelines, 2022

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