IEC TS 62600-30:2018

Marine energy - Wave, tidal and other water current converters - Part 30: Electrical power quality requirements

IEC TS 62600-30:2018(E) includes: definition and specification of the quantities to be determined for characterizing the power quality of a marine energy (wave, tidal and other water current) converter unit; measurement procedures for quantifying the characteristics of a marine energy (wave, tidal and other water current) converter.
The measurement procedures are valid for a single marine energy converter (MEC) unit (or farm) with three-phase grid or an off-grid connection. The measurement procedures are valid for any size of MEC unit.

General Information

• Status: Published
• Publication Date: 28-Aug-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 114 - Marine energy - Wave, tidal and other water current converters
• Drafting Committee: PT 62600-30 - TC 114/PT 62600-30
• Current Stage: PPUB - Publication issued
• Start Date: 13-Sep-2018
• Completion Date: 29-Aug-2018

Standards Content (Sample)

IEC TS 62600-30 ®
Edition 1.0 2018-08
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 30: Electrical power quality requirements

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IEC TS 62600-30 ®
Edition 1.0 2018-08
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –

Part 30: Electrical power quality requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140 ISBN 978-2-8322-5978-8

– 2 – IEC TS 62600-30:2018  IEC 2018
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Symbols and units . 10
5 Abbreviated terms . 12
6 Marine energy converter power quality characteristic parameters . 12
6.1 Overview. 12
6.2 Marine energy converter specification . 12
6.3 Voltage fluctuations (continuous operations) . 13
6.3.1 General . 13
6.3.2 Continuous operation: MV connected systems . 13
6.3.3 Continuous operation: LV connected system . 14
6.4 Current harmonics, interharmonics and higher frequency components . 14
6.5 Response to voltage drops . 15
6.6 Active power . 16
6.6.1 Maximum measured power . 16
6.6.2 Ramp rate limitation . 16
6.6.3 Set-point control . 16
6.7 Reactive power . 17
6.7.1 Reactive power capability . 17
6.7.2 Set-point control . 17
7 Test procedures . 17
7.1 General . 17
7.1.1 Overview . 17
7.1.2 Test validity . 18
7.1.3 Test conditions . 18
7.1.4 Test equipment . 19
7.2 Voltage fluctuations (continuous operation) . 23
7.2.1 MV connected marine energy converters . 23
7.2.2 Fictitious grid . 23
7.2.3 Continuous operation – MV connected marine energy converters . 25
7.2.4 Continuous operation – LV connected marine energy converters . 26
7.3 Current harmonics, interharmonics and higher frequency components . 26
7.4 Response to temporary voltage drop . 27
7.5 Active power . 29
7.5.1 General . 29
7.5.2 Maximum measured power . 29
7.5.3 Ramp rate limitation . 30
7.5.4 Set point control . 30
7.6 Reactive power . 30
7.6.1 General . 30
7.6.2 Reactive power capability . 30
7.6.3 Set point control . 31

8 Determination of power quality . 32
8.1 General . 32
8.2 Voltage fluctuations (continuous operation) . 32
8.2.1 MV connected marine energy converter units . 32
8.2.2 LV connected marine energy converter . 33
8.3 Current harmonics, interharmonics and higher frequency components . 34
Annex A (informative) Sample report format . 36
A.1 General . 36
A.2 Marine energy converter rated data at terminals . 37
A.3 Voltage fluctuations (continuous operation) . 37
Annex B (informative) Voltage fluctuations and flicker . 39
B.1 Medium voltage (MV) connected converters . 39
B.2 Low voltage (LV) connected converters . 40
Annex C (informative) Measurement of active power, reactive power and voltage . 41
Bibliography . 43

Figure 1 – Adjustment of active power set-point . 16
Figure 2 – Adjustment of reactive power set-point . 17
Figure 3 – Assumed elements of measurement system (MV-connected marine energy
converter unit) . 19
Figure 4 – Assumed elements of measurement system (LV-connected marine energy
converter) . 20
Figure 5 – Assumed elements of wave energy converter power quality measurement
system . 21
Figure 6 – Assumed elements of tidal energy converter unit power quality
measurement system . 22
Figure 7 – Fictitious grid for simulation of fictitious voltage . 23
Figure 8 – System with short circuit emulator for testing MEC unit response to
temporary voltage drop . 28
Figure 9 – Tolerance of voltage drop. 29
Figure B.1 – Measurement and assessment procedures for flicker during continuous
operation of the marine energy converter (MV-connected converter) . 39
Figure B.2 – Measurement and assessment procedures for flicker during continuous
operation of the marine energy converter (LV-connected converter). 40

Table 1 – Marine energy – resource classification . 14
Table 2 – Specification of per unit voltage drops (the specified magnitudes, duration
and shape are for the voltage drop occurring as if the MEC under test is not
connected, i.e. without contribution from the installation) . 15
Table 3 – Measurement ranges to be excluded . 18
Table 4 – General specification of requirements for measurement equipment . 20
Table 5 – Specification of requirements for wave measurement equipment . 21
Table 6 – Specification of requirements for tidal velocity measurement equipment . 22
Table 7 – Specification of exponents according to IEC TR 61000-3-6 . 34
Table A.1 – General marine energy converter information . 36
Table A.2 – Marine energy converter nameplate ratings . 36
Table A.3 – Test information . 37

– 4 – IEC TS 62600-30:2018  IEC 2018
Table A.4 – Marine energy converter rated data at terminals . 37
Table A.5 – Reactive set-point control. 37
Table A.6 – Flicker index (coefficient or disturbance factor) data . 38
Table A.7 – Flicker coefficient as a function of resource conditions . 38

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARINE ENERGY –
WAVE, TIDAL AND OTHER WATER CURRENT CONVERTERS –

Part 30: Electrical power quality requirements

FOREWORD
1) The Inter
...