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IEC 61400-27-1
Edition 2.0 2020-07
INTERNATIONAL
STANDARD
Wind energy generation systems –
Part 27-1: Electrical simulation models – Generic models
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IEC 61400-27-1
Edition 2.0 2020-07
INTERNATIONAL
STANDARD
Wind energy generation systems –
Part 27-1: Electrical simulation models – Generic models
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.180 ISBN 978-2-8322-8505-3
– 2 – IEC 61400-27-1:2020 © IEC 2020
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, abbreviations and subscripts . 12
3.1 Terms and definitions . 12
3.2 Abbreviations and subscripts . 16
3.2.1 Abbreviations . 16
3.2.2 Subscripts . 18
4 Symbols and units . 19
4.1 General . 19
4.2 Symbols (units) . 19
5 Functional specification of models . 23
5.1 General specifications . 23
5.2 Wind turbine models . 24
5.3 Wind power plant models . 25
6 Formal specification of modular structures of models . 25
6.1 General . 25
6.2 Wind turbine models . 26
6.2.1 General . 26
6.2.2 Type 1 . 26
6.2.3 Type 2 . 28
6.2.4 Type 3 . 30
6.2.5 Type 4 . 32
6.3 Auxiliary equipment models . 37
6.3.1 STATCOM . 37
6.3.2 Other auxiliary equipment . 38
6.4 Wind power plant models . 38
6.4.1 General . 38
6.4.2 Wind power plant control and communication . 39
6.4.3 Basic wind power plant . 40
6.4.4 Wind power plant with reactive power compensation . 41
7 Formal specification of modules . 42
7.1 General . 42
7.2 Aerodynamic modules . 43
7.2.1 Constant aerodynamic torque module . 43
7.2.2 One-dimensional aerodynamic module . 44
7.2.3 Two-dimensional aerodynamic module . 44
7.3 Mechanical modules . 46
7.3.1 Two mass module . 46
7.3.2 Other mechanical modules . 46
7.4 Generator and converter system modules . 46
7.4.1 Asynchronous generator module . 46
7.4.2 Type 3A generator system module . 47
7.4.3 Type 3B generator system module . 48
7.4.4 Type 4 generator system module . 49
7.4.5 Reference frame rotation module . 50
7.5 Electrical systems modules . 51
7.5.1 Electrical systems gamma module . 51
7.5.2 Other electrical systems modules . 52
7.6 Pitch control modules . 52
7.6.1 Pitch control power module . 52
7.6.2 Pitch angle control module. 53
7.7 Generator and converter control modules . 54
7.7.1 Rotor resistance control module . 54
7.7.2 P control module type 3 . 55
7.7.3 P control module type 4A . 58
7.7.4 P control module type 4B . 59
7.7.5 Q control module . 60
7.7.6 Current limitation module . 63
7.7.7 Constant Q limitation module . 64
7.7.8 QP and QU limitation module . 65
7.8 Grid interfacing modules . 66
7.8.1 Grid protection module . 66
7.8.2 Grid measurement module . 67
7.9 Wind power plant control modules. 68
7.9.1 WP P control module . 68
7.9.2 WP Q control module . 69
7.10 Communication modules . 71
7.10.1 General . 71
7.10.2 Communication delay module . 71
7.10.3 Linear communication module . 71
7.11 Electrical components modules . 72
7.11.1 Line module . 72
7.11.2 Transformer module . 72
7.11.3 Other electrical components modules . 72
Annex A (informative) Estimation of parameters for single branch power collection
system model. 73
A.1 General . 73
A.2 Description of method . 73
A.2.1 General . 73
A.2.2 Lines aggregation . 73
A.2.3 Wind turbine transformers aggregation . 74
A.3 Numerical example . 75
Annex B (informative) Two-dimensional aerodynamic model . 78
B.1 Objective . 78
B.2 Wind speed input model . 78
B.3 Parameters for power input module . 80
Annex C (informative) Implementation of generator systems modules with external
impedance . 81
Annex D (normative) Block symbol library . 84
D.1 General . 84
D.2 Switch . 84
D.3 Time step delay . 84
D.4 Stand-alone ramp rate limiter . 85
– 4 – IEC 61400-27-1:2020 © IEC 2020
D.5 First order filter . 85
D.6 Lookup table .
...