IEC TS 63102:2021
(Main)Grid code compliance assessment methods for grid connection of wind and PV power plants
Grid code compliance assessment methods for grid connection of wind and PV power plants
IEC TS 63102:2021(E) highlights recommended technical methods of grid code compliance assessment for grid connection of wind and PV power plants as the basic components of grid connection evaluation. The electrical behaviour of wind and PV power plants in this technical specification includes frequency and voltage range, reactive power capability, control performance including active power based control and reactive power based control, fault ride through capability and power quality.
Compliance assessment is the process of determining whether the electrical behaviour of wind and PV power plants meets specific technical requirements in grid codes or technical regulations. The assessment methods include compliance testing, compliance simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, testing results and validated simulation models, and continuous monitoring data. The scope of this technical specification only covers assessment methods from a technical aspect; processes related to certification are not included.
This technical specification is applicable to wind and PV power plants connected to the electrical power grid.
General Information
Standards Content (Sample)
IEC TS 63102 ®
Edition 1.0 2021-09
TECHNICAL
SPECIFICATION
colour
inside
Grid code compliance assessment methods for grid connection of wind and PV
power plants
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IEC TS 63102 ®
Edition 1.0 2021-09
TECHNICAL
SPECIFICATION
colour
inside
Grid code compliance assessment methods for grid connection of wind and PV
power plants
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160; 27.180 ISBN 978-2-8322-1022-1
– 2 – IEC TS 63102:2021 IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviations and subscripts . 7
3.1 Terms and definitions . 7
3.2 Abbreviations and subscripts . 8
3.2.1 Abbreviations . 8
3.2.2 Subscripts . 9
4 Symbols and units . 9
5 General specifications . 10
5.1 General . 10
5.2 Type tested units – Wind turbines and PV inverters . 10
5.3 Projects – Wind and PV power plants . 10
5.4 Compliance assessment methods . 10
6 Operating area . 11
6.1 General . 11
6.2 Frequency range . 11
6.2.1 Documentation . 11
6.2.2 Method 1: Monitoring . 11
6.3 Voltage range . 12
6.3.1 Documentation . 12
6.3.2 Method 1: Simulation . 12
6.3.3 Method 2: Monitoring . 12
6.4 Reactive power capability . 12
6.4.1 Documentation . 12
6.4.2 Method 1: Simulation . 12
6.4.3 Method 2: Monitoring . 13
7 Control performance . 13
7.1 General . 13
7.2 Active power based control . 13
7.2.1 Documentation . 13
7.2.2 Method 1: Plant field testing . 14
7.2.3 Method 2: Monitoring . 17
7.2.4 Method 3: CHIL testing . 17
7.3 Reactive power based control . 19
7.3.1 Documentation . 19
7.3.2 Method 1: Plant field testing . 20
7.3.3 Method 2: Monitoring . 23
7.3.4 Method 3: CHIL testing . 23
8 Fault ride through . 24
8.1 General . 24
8.2 Documentation . 24
8.3 Method 1: Simulation . 25
8.4 Method 2: Monitoring . 27
9 Power quality . 28
9.1 General . 28
9.2 Current harmonics and inter-harmonics . 28
9.2.1 Documentation . 28
9.2.2 Method 1: Plant Field testing . 28
9.3 Flicker . 29
9.3.1 Documentation . 29
9.3.2 Method 1: Plant field testing . 29
Annex A (informative) Monitoring of electrical performance of wind and PV power
plants. 30
A.1 Overview. 30
A.2 Responsibilities . 30
A.3 Basic principles . 30
A.4 Monitoring signals . 30
A.5 Monitoring hardware . 31
Annex B (informative) Controller hardware in the loop (CHIL) testing setup . 32
B.1 General . 32
B.2 Power plant modelling . 32
B.3 Set-up . 32
Annex C (informative) Harmonic simulation for wind and PV power plants . 34
C.1 General . 34
C.2 General simulation methods . 35
Annex D (informative) Control performance index . 37
Bibliography . 38
Figure 1 – An example of PQ diagram . 13
Figure 2 – Example of figure for active power ramp rate test . 15
Figure 3 – Example of figure for set point test of active power . 15
Figure 4 – Example of figure for frequency control test . 16
Figure 5 – Example of figure for frequency control test with simulated frequency
variation . 18
Figure 6 – Example figure for set point control of reactive power as control reference
(reactive power control mode) . 21
Figure 7 – Example of figure for set point control of voltage as control reference
(voltage control mode) . 22
Figure 8 – Example of figure for voltage control test . 23
Figure 9 – Layout of grid with symmetrical fault . 25
Figure 10 – Layout of grid with unsymmetrical fault . 25
Figure 11 – Example of active power recovery . 27
Figure 12 – Equivalent circuit of the grid and the power plant . 29
Figure B.1 – Test bench diagram . 33
Figure C.1 – Ideal harmonic current source illustration for harmonic distortion
calculation . 34
Figure C.2 – Converter harmonic model as a Norton/Thevenin equivalent circuit . 35
Figure C.3 – Norton equivalent harmonic current source illustration for network
harmonic distortion calculation . 35
Figure C.4 – Power electronics average model Norton equivalent circuit representation . 36
Figure D.1 – Performance index of active and reactive power based control . 37
– 4 – IEC TS 63102:2021 IEC 2021
Table 1 – Overview of assessment methods . 11
Table 2 – Example table for maximum variation value of active power . 16
Table 3 – Example of table for performance index of set point test. 17
Table 4 – Example of table for performance index of frequency control response . 17
Table 5 – Example of table for functionality test of frequency control . 19
Table 6 – Example
...
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