IEC TS 62933-3-1:2018

IEC TS 62933-3-1 ®
Edition 1.0 2018-08
TECHNICAL
SPECIFICATION
colour
inside
Electrical energy storage (EES) systems –
Part 3-1: Planning and performance assessment of electrical energy storage
systems – General specification

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IEC TS 62933-3-1 ®
Edition 1.0 2018-08
TECHNICAL
SPECIFICATION
colour
inside
Electrical energy storage (EES) systems –

Part 3-1: Planning and performance assessment of electrical energy storage

systems – General specification

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.020.30 ISBN 978-2-8322-5973-3

– 2 – IEC TS 62933-3-1:2018 © IEC 2018
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and symbols. 9
3.1 Terms and definitions . 9
3.2 Symbols . 9
4 General structure of EES systems . 9
4.1 Architecture of an EES system . 9
4.2 Subsystem specifications . 10
4.2.1 Accumulation subsystem . 10
4.2.2 Power conversion subsystem . 11
4.2.3 Auxiliary subsystem . 11
4.2.4 Control subsystem . 11
5 Planning of EES systems . 12
5.1 General . 12
5.2 EES system environment . 13
5.2.1 General . 13
5.2.2 Grid parameters and requirements. 13
5.2.3 Service conditions . 14
5.2.4 Standards and local regulations . 15
5.3 Sizing of EES systems . 15
5.3.1 Requirements at primary POC . 15
5.3.2 Sizing recommendations . 16
5.4 Main electrical parameters of EES systems . 17
5.4.1 General . 17
5.4.2 Input and output power rating . 17
5.4.3 Rated energy capacity . 18
5.4.4 Auxiliary power consumption . 18
5.4.5 Self-discharge . 18
5.4.6 Roundtrip efficiency . 18
5.4.7 Duty cycle roundtrip efficiency . 19
5.4.8 Recovery times . 19
5.4.9 End-of-service life values . 19
5.5 Functional system performance . 20
5.5.1 General . 20
5.5.2 Operation states of control subsystem . 22
5.5.3 Grid frequency support . 22
5.5.4 Islanding control and black start capability . 23
5.5.5 Active power limitation . 23
5.5.6 Manual active power control . 24
5.5.7 Pattern active power control . 24
5.5.8 Automatic load following control . 25
5.5.9 Power control modes for grid voltage support . 25
5.6 Communication interface. 27
5.6.1 General . 27

5.6.2 Information model for an EES system . 27
5.6.3 Remote monitoring and control . 29
6 EES system performance assessment . 33
6.1 Factory acceptance test (FAT) . 33
6.2 Installation and commissioning . 34
6.2.1 General . 34
6.2.2 Installation phase . 34
6.2.3 Commissioning phase . 34
6.3 Site acceptance test (SAT) . 35
6.4 Performance monitoring phase . 36
Annex A (informative) Examples of EES system applications . 38
A.1 EES system designed for reserve control . 38
A.1.1 General . 38
A.1.2 Example of an EES system for primary frequency control . 38
A.1.3 Example of an EES system for secondary frequency control . 39
A.1.4 Example of an EES system for dynamic frequency control . 40
A.2 EES system in conjunction with renewable energy production . 42
A.2.1 General . 42
A.2.2 Example of EES system for renewable (energy) firming . 42
A.2.3 Example of EES system for renewable (power) smoothing . 43
A.3 EES system for grid support applications . 44
A.3.1 Example of an EES system for grid voltage support (Q(U) control mode) . 44
A.3.2 Example of an EES system for power quality support by voltage-related
active power injection . 47
Annex B (informative) Aspects to be considered with regard to EES system installation . 49
B.1 Site-assembling . 49
B.2 Protection against disaster – Fire prevention . 49
B.3 Transportation and on-site storage . 49
Bibliography . 50

Figure 1 – Typical architectures of EES systems . 10
Figure 2 – Example of classification of EES systems according to energy form . 11
Figure 3 – Sample performance versus time characteristics for EES systems . 19
Figure 4 – Sample consideration to design the service life of EES systems . 20
Figure 5 –Example of EES system operation states . 22
Figure 6 – Example for P(f) strategy . 23
Figure 7 – Example of setting of active output power at primary POC . 24
Figure 8 – Example of day pattern operation at primary POC . 25
Figure 9 – Example of peak shaving application . 25
Figure 10 – Example of a general control characteristic . 26
Figure 11 – Reference diagram for information exchange . 27
Figure 12 – EES system as an aggregation of several EES systems at the same
primary POC . 28
Figure A.1 – Sample duty cycle for a primary frequency control application with 30-s
power output every 30 min shown over 2 h . 38
Figure A.2 – Sample power output for a secondary frequency control application with
20-min power output over 3 h . 40

– 4 – IEC TS 62933-3-1:2018 © IEC 2018
Figure A.3 – Sample output power of an EES system for a dynamic frequency control
application in spring, summer, autumn and winter . 41
Figure A.4 – Sample output power of an EES system in a renewable (solar) energy

firming application . 43
Figure A.5 – Sam
...