Energy management system application program interface (EMS-API) - Part 457: Dynamics profile

IEC 61970-457:2021 specifies a standard interface for exchanging dynamic model information needed to support the analysis of the steady state stability (small-signal stability) and/or transient stability of a power system or parts of it. The schema(s) for expressing the dynamic model information are derived directly from the CIM, more specifically from IEC 61970-302.
The scope of this document includes only the dynamic model information that needs to be exchanged as part of a dynamic study, namely the type, description and parameters of each control equipment associated with a piece of power system equipment included in the steady state solution of a complete power system network model. Therefore, this profile is dependent upon other standard profiles for the equipment as specified in IEC 61970-452, CIM static transmission network model profiles, the topology, the steady state hypothesis and the steady-state solution (as specified in IEC 61970-456, Solved power system state profiles) of the power system, which bounds the scope of the exchange. The profile information described by this document needs to be exchanged in conjunction with IEC 61970-452 and IEC 61970-456 profiles’ information to support the data requirements of transient analysis tools. IEC 61970 456 provides a detailed description of how different profile standards can be combined to form various types of power system network model exchanges.
This document supports the exchange of the following types of dynamic models:
• standard models: a simplified approach to exchange, where models are contained in predefined libraries of classes interconnected in a standard manner that represent dynamic behaviour of elements of the power system. The exchange only indicates the name of the model along with the attributes needed to describe its behaviour.
• proprietary user-defined models: an exchange that would provide users the ability to exchange the parameters of a model representing a vendor or user proprietary device where an explicit description of the model is not described in this document. The connections between the proprietary models and standard models are the same as described for the standard models exchange. Recipient of the data exchange will need to contact the sender for the behavioural details of the model.
This document builds on IEC 61970-302, CIM for dynamics which defines the descriptions of the standard dynamic models, their function block diagrams, and how they are interconnected and associated with the static network model. This type of model information is assumed to be pre-stored by all software applications hence it is not necessary to be exchanged in real-time or as part of a dynamics model exchange.

General Information

Status
Published
Publication Date
15-Mar-2021
Current Stage
PPUB - Publication issued
Completion Date
16-Mar-2021
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IEC 61970-457
Edition 1.0 2021-03
INTERNATIONAL
STANDARD
colour
inside
Energy management system application program interface (EMS-API) –
Part 457: Dynamics profile
IEC 61970-457:2021-03(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61970-457
Edition 1.0 2021-03
INTERNATIONAL
STANDARD
colour
inside
Energy management system application program interface (EMS-API) –
Part 457: Dynamics profile
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-9421-5

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC 61970-457:2021 © IEC 2021
CONTENTS

FOREWORD ......................................................................................................................... 22

INTRODUCTION ................................................................................................................... 24

1 Scope ............................................................................................................................ 25

2 Normative references .................................................................................................... 25

3 Terms and definitions .................................................................................................... 26

4 Profile specification ....................................................................................................... 26

4.1 General ................................................................................................................. 26

4.2 Requirements and constraints ............................................................................... 26

5 Overview ....................................................................................................................... 29

6 Use cases ..................................................................................................................... 30

6.1 General ................................................................................................................. 30

6.2 Dynamic assessment studies ................................................................................ 30

7 Architecture ................................................................................................................... 31

7.1 General ................................................................................................................. 31

7.2 Profile architecture ................................................................................................ 32

8 Detailed profile specification .......................................................................................... 34

8.1 General ................................................................................................................. 34

8.2 Package DynamicsProfile ..................................................................................... 35

8.2.1 General ......................................................................................................... 35

8.2.2 (abstract) DynamicsProfileVersion root class ................................................. 35

8.2.3 Package Base ............................................................................................... 35

8.2.4 Package Dynamics ........................................................................................ 64

Annex A (normative) Implementation clarifications related to the models inherited from

RotatingMachineDynamics class ......................................................................................... 444

Annex B (informative) Examples using IEC 61970-552 serialisation ................................... 446

B.1 Overview............................................................................................................. 446

B.2 Standard models ................................................................................................. 446

B.3 User-defined models ........................................................................................... 450

Bibliography ........................................................................................................................ 457

Figure 1 – SynchronousMachineDynamics association ......................................................... 32

Figure 2 – Interconnection diagram for a synchronous machine ............................................ 32

Figure 3 – Standard connections for a synchronous machine ................................................ 33

Figure 4 – Profile relationships ............................................................................................. 34

Figure 5 – Class diagram Domain::Primitives ........................................................................ 36

Figure 6 – Class diagram Domain::DataTypes ...................................................................... 36

Figure 7 – Class diagram Domain::Enumerations .................................................................. 37

Figure 8 – Class diagram Core::Core .................................................................................... 55

Figure 9 – Class diagram Wires::Wires ................................................................................. 59

Figure 10 – StandardInterconnectionSynchronousMachine ................................................... 65

Figure 11 – StandardInterconnectionSynchronousGeneratorCrossCompound ....................... 66

Figure 12 – StandardInterconnectionAsynchronousMachine ................................................. 67

Figure 13 – StandardInterconnectionWindTurbineType1Aand1B ........................................... 68

Figure 14 – StandardInterconnectionWindTurbineType2 ....................................................... 69

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IEC 61970-457:2021 © IEC 2021 – 3 –

Figure 15 – StandardInterconnectionWindTurbineType3 ....................................................... 70

Figure 16 – StandardInterconnectionWindTurbineType4Aand4B ........................................... 71

Figure 17 – StandardInterconnectionSingleLoad ................................................................... 72

Figure 18 – Class diagram StandardInterconnections::

StandardSynchronousMachineInterconnection ...................................................................... 73

Figure 19 – Class diagram StandardInterconnections::

StandardAsynchronousMachineInterconnection .................................................................... 74

Figure 20 – Class diagram StandardInterconnections::

StandardWindType1and2Interconnection .............................................................................. 75

Figure 21 – Class diagram StandardInterconnections::

StandardWindType3and4Interconnection .............................................................................. 76

Figure 22 – Class diagram StandardInterconnections::StandardLoadInterconnection ............ 77

Figure 23 – Class diagram StandardInterconnections::StandardHVDCInterconnection .......... 78

Figure 24 – Class diagram StandardInterconnections::

StandardStaticVarCompensatorInterconnection .................................................................... 78

Figure 25 – SynchronousGeneratorInterconnectionAndVariables .......................................... 81

Figure 26 – SynchronousMotorInterconnectionAndVariables ................................................. 82

Figure 27 – Class diagram SynchronousMachineDynamics::

SynchronousMachineDynamics ............................................................................................. 83

Figure 28 – SynchronousMachineSaturationParameters ....................................................... 84

Figure 29 – SynchronousGeneratorMechanicalEquation ....................................................... 85

Figure 30 – SynchronousMotorMechanicalEquation .............................................................. 86

Figure 31 – SynchronousGeneratorPhasor ............................................................................ 87

Figure 32 – SynchronousMotorPhasor .................................................................................. 88

Figure 33 – Simplified ........................................................................................................... 89

Figure 34 – SubtransientRoundRotor .................................................................................... 93

Figure 35 – SubtransientSalientPole ..................................................................................... 94

Figure 36 – SubtransientTypeF ............................................................................................. 95

Figure 37 – SubtransientTypeJ ............................................................................................. 96

Figure 38 – SubtransientRoundRotorSimplified ..................................................................... 97

Figure 39 – SubtransientSalientPoleSimplified ...................................................................... 99

Figure 40 – SubtransientRoundRotorSimplifiedDirectAxis ................................................... 101

Figure 41 – SubtransientSalientPoleSimplifiedDirectAxis .................................................... 103

Figure 42 – SynchronousEquivalentCircuit .......................................................................... 107

Figure 43 – AsynchronousGeneratorInterconnectionAndVariables ...................................... 109

Figure 44 – AsynchronousMotorInterconnectionAndVariables ............................................. 110

Figure 45 – Class diagram AsynchronousMachineDynamics::

AsynchronousMachineDynamics ......................................................................................... 111

Figure 46 – AsynchronousGeneratorMechanicalEquation .................................................... 112

Figure 47 – AsynchronousMotorMechanicalEquation .......................................................... 112

Figure 48 – AsynchronousEquivalentCircuit ........................................................................ 116

Figure 49 – TurbineGovernorInterconnectionAndVariables .................................................. 118

Figure 50 – Class diagram TurbineGovernorDynamics::TurbineGovernorDynamics ............ 119

Figure 51 – GovHydroIEEE0 ............................................................................................... 121

Figure 52 – GovHydroIEEE2 ............................................................................................... 123

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– 4 – IEC 61970-457:2021 © IEC 2021

Figure 53 – GovSteamIEEE1 .............................................................................................. 125

Figure 54 – GovCT1 ........................................................................................................... 128

Figure 55 – GovCT2 ........................................................................................................... 132

Figure 56 – GovGAST ......................................................................................................... 136

Figure 57 – GovGAST1 ....................................................................................................... 137

Figure 58 – GovGAST2 ....................................................................................................... 140

Figure 59 – GovGAST3 ....................................................................................................... 142

Figure 60 – GovGAST3ExhaustTemperature ....................................................................... 143

Figure 61 – GovGAST4 ....................................................................................................... 145

Figure 62 – GovGASTWD ................................................................................................... 147

Figure 63 – GovHydro1 ....................................................................................................... 149

Figure 64 – GovHydro2 ....................................................................................................... 151

Figure 65 – GovHydro3 ....................................................................................................... 154

Figure 66 – GovHydro4 ....................................................................................................... 157

Figure 67 – GovHydro4SimpleHydroTurbine ....................................................................... 158

Figure 68 – GovHydro4FrancisPeltonTurbine ...................................................................... 159

Figure 69 – GovHydro4KaplanTurbine ................................................................................ 160

Figure 70 – GovHydroDD .................................................................................................... 163

Figure 71 – GovHydroFrancis ............................................................................................. 166

Figure 72 – GovHydroFrancisNonLinearGainAndEfficiency ................................................. 167

Figure 73 – DetailedHydroModelHydraulicSystem ............................................................... 168

Figure 74 – GovHydroPelton ............................................................................................... 170

Figure 75 – GovHydroPeltonNonLinearGainAndEfficiency ................................................... 171

Figure 76 – GovHydroPID ................................................................................................... 174

Figure 77 – GovHydroPID2 ................................................................................................. 177

Figure 78 – GovHydroR ...................................................................................................... 179

Figure 79 – GovHydroWEH ................................................................................................. 183

Figure 80 – GovHydroWPID ................................................................................................ 187

Figure 81 – GovSteam0 ...................................................................................................... 189

Figure 82 – GovSteam1 ...................................................................................................... 191

Figure 83 – GovSteam1BacklashHysteresis ........................................................................ 192

Figure 84 – GovSteam1InputSpeedDeadband ..................................................................... 193

Figure 85 – GovSteam2 ...................................................................................................... 196

Figure 86 – GovSteamBB ................................................................................................... 197

Figure 87 – GovSteamCC ................................................................................................... 199

Figure 88 – GovSteamEU ................................................................................................... 201

Figure 89 – GovSteamFV2 .................................................................................................. 204

Figure 90 – GovSteamFV3 .................................................................................................. 205

Figure 91 – GovSteamFV4 .................................................................................................. 208

Figure 92 – GovSteamSGO................................................................................................. 211

Figure 93 – Class diagram

TurbineLoadControllerDynamics::TurbineLoadControllerDynamics ..................................... 213

Figure 94 – TurbLCFB1 ...................................................................................................... 214

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IEC 61970-457:2021 © IEC 2021 – 5 –

Figure 95 – MechanicalLoadInterconnectionAndVariables ................................................... 216

Figure 96 – MechanicalLoadEquations ................................................................................ 217

Figure 97 – Class diagram MechanicalLoadDynamics::MechanicalLoadDynamics .............. 218

Figure 98 – ExcitationSystemInterconnectionAndVariables ................................................. 220

Figure 99 – Class diagram ExcitationSystemDynamics::ExcitationSystemDynamics ........... 221

Figure 100 – ExcAC1A ........................................................................................................ 247

Figure 101 – ExcAC2A ........................................................................................................ 249

Figure 102 – ExcAC3A ........................................................................................................ 252

Figure 103 – ExcAC4A ........................................................................................................ 254

Figure 104 – ExcAC5A ........................................................................................................ 255

Figure 105 – ExcAC6A ........................................................................................................ 257

Figure 106 – ExcAC8B ........................................................................................................ 259

Figure 107 – ExcANS .......................................................................................................... 262

Figure 108 – ExcAVR1 ........................................................................................................ 263

Figure 109 – ExcAVR2 ........................................................................................................ 265

Figure 110 – ExcAVR3 ........................................................................................................ 266

Figure 111 – ExcAVR4 ........................................................................................................ 267

Figure 112 – ExcAVR5 ........................................................................................................ 269

Figure 113 – ExcAVR7 ........................................................................................................ 270

Figure 114 – ExcBBC .......................................................................................................... 272

Figure 115 – ExcCZ ............................................................................................................ 274

Figure 116 – ExcDC1A ....................................................................................................... 275

Figure 117 – ExcDC2A ....................................................................................................... 277

Figure 118 – ExcDC3A ....................................................................................................... 279

Figure 119 – ExcDC3A1 ...................................................................................................... 281

Figure 120 – ExcELIN1 ....................................................................................................... 283

Figure 121 – ExcELIN2 ....................................................................................................... 285

Figure 122 – ExcHU ............................................................................................................ 287

Figure 123 – ExcNI ............................................................................................................. 288

Figure 124 – ExcOEX3T ..................................................................................................... 290

Figure 125 – ExcPIC ........................................................................................................... 292

Figure 126 – ExcREXS ....................................................................................................... 294

Figure 127 – ExcRQB ......................................................................................................... 297

Figure 128 – ExcSCRX ....................................................................................................... 299

Figure 129 – ExcSEXS ....................................................................................................... 300

Figure 130 – ExcSK ............................................................................................................ 302

Figure 131 – ExcST1A ........................................................................................................ 304

Figure 132 – ExcST2A ........................................................................................................ 306

Figure 133 – ExcST3A ........................................................................................................ 308

Figure 134 – ExcST4B ........................................................................................................ 310

Figure 135 – ExcST6B ........................................................................................................ 312

Figure 136 – ExcST7B ........................................................................................................ 314

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– 6 – IEC 61970-457:2021 © IEC 2021
Figure 137 – Class diagram OverexcitationLimiterDynamics::

OverexcitationLimiterDynamics ........................................................................................... 316

Figure 138 – OverexcLim2 .................................................................................................. 318

Figure 139 – OverexcLimX1 ................................................................................................ 319

Figure 140 – OverexcLimX1TimeCharacteristic ................................................................... 320

Figure 141 – OverexcLimX2 ................................................................................................ 321

Figure 142 – OverexcLimX2TimeCharacteristic ................................................................... 322

Figure 143 – Class diagram

UnderexcitationLimiterDynamics::UnderexcitationLimiterDynamics ..................................... 324

Figure 144 – UnderexcLim2Simplified ................................................................................. 328

Figure 145 – UnderexcLimX1 .............................................................................................. 330

Figure 146 – UnderexcLimX2 .............................................................................................. 331

Figure 147 – PowerSystemStabilizerInterconnectionAndVariables ...................................... 332

Figure 148 – Class diagram PowerSystemStabilizerDynamics::

PowerSystemStabilizerDynamics ........................................................................................ 333

Figure 149 – Pss1 ............................................................................................................... 341

Figure 150 – Pss1A ............................................................................................................ 343

Figure 151 – Pss2B ............................................................................................................ 344

Figure 152 – Pss2ST .......................................................................................................... 346

Figure 153 – Pss5 ............................................................................................................... 348

Figure 154 – PssELIN2 ....................................................................................................... 350

Figure 155 – PssPTIST1 ..................................................................................................... 351

Figure 156 – PssPTIST3 ..................................................................................................... 352

Figure 157 – PssRQB ......................................................................................................... 355

Figure 158 – PssSB4 .......................................................................................................... 356

Figure 159 – PssSH ............................................................................................................ 357

Figure 160 – PssSK ............................................................................................................ 359

Figure 161 – PssSTAB2A ................................................................................................... 360

Figure 162 – PssWECC ...................................................................................................... 361

Figure 163 – DiscontinuousExcitationControlInterconnectionAndVariables .......................... 363

Figure 164 – Class diagram DiscontinuousExcitationControlDynamics::

DiscontinuousExcitationControlDynamics ............................................................................ 364

Figure 165 – Class diagram PFVArControllerType1Dynamics::

PFVArControllerType1Dynamics ......................................................................................... 368

Figure 166 – Class diagram VoltageAdjusterDynamics::VoltageAdjusterDynamics .............. 371

Figure 167 – Class diagram PFVArControllerType2Dynamics::

PFVArControllerType2Dyanmics ......................................................................................... 373

Figure 168 – PFVArType2Common1 ................................................................................... 376

Figure 169 – VoltageCompensatorInterconnectionAndVariables ......................................... 377

Figure 170 – Class diagram VoltageCompensatorDynamics::

VoltageCompensatorDynamics ........................................................................................... 378

Figure 171 – Class diagram WindDynamics::WindDynamicsType1or2 ................................. 382

Figure 172 – Class diagram WindDynamics::WindDynamicsType3 ...................................... 383

Figure 173 – Class diagram WindDynamics::WindDynamicsType4 ...................................... 384

Figure 174 – Class diagram WindDynamics::WindDynamicsPlant ....................................... 385

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IEC 61970-457:2021 © IEC 2021 – 7 –

Figure 175 – LoadInterconnectionAndVariables .................................................................. 411

Figure 176 – Class diagram LoadDynamics::LoadDynamics ................................................ 412

Figure 177 – LoadCompositeEquations ............................................................................... 413

Figure 178 – LoadGenericNonLinearTypeEquations.........................................................

...

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