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BSI PD IEC TS 62600-30:2018

BSI PD IEC TS 62600-30:2018

$189.07

Marine energy. Wave, tidal and other water current converters – Electrical power quality requirements

Published By Publication Date Number of Pages
BSI 2018 46
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This part of IEC 62600 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, though this document only requires MEC unit types intended for PCC (Point of Common Coupling) at Medium Voltage (MV) or High Voltage (HV) to be tested and characterized. In addition, a simplified measurement and reporting procedure is outlined for MEC units connected at Low Voltage (LV) networks. MV–connected and LV-connected devices are defined as:

  • MV connected units – typically multiple three-phase MEC units operating as a marine power farm and delivering power through a HV or MV network;

  • LV connected units – typically single-phase or three-phase units deployed in isolated, hybrid or micro-grid type systems supplying small-scale loads.

Considering the nascent status of the marine energy sector, the following limitations of this document are to be recognized:

  • voltage fluctuations under switching operation – the current revision only considers voltage fluctuations under continuous operation;

  • resource classifications – to categorize the measured flicker quantities, various resource classes are suggested only as guidelines. The user is advised to use these resource classes judiciously.

The measurement procedures are designed to be as non-site-specific as possible so that power quality characteristics measured at a test site, for example, can be considered valid at other sites also providing the same MEC unit configuration and operation modes (for example control parameters). If the configuration or operation mode is changed in any way that might cause the MEC unit to behave differently with respect to power quality, the power quality measurement procedures must be repeated.

This document is for testing of wave, tidal and other water current energy converter units, though it contains information that may also be useful for testing of MEC farms. The cases described are not intended for Ocean Thermal Energy Conversion (OTEC) systems.

NOTE This document uses the following terms for system voltage:

  • low voltage (LV) refers to Un <= 1 kV;

  • medium voltage (MV) refers to 1 kV < Un <= 35 kV;

  • high voltage (HV) refers to Un > 35 kV.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
7 FOREWORD
9 INTRODUCTION
10 1 Scope
11 2 Normative references
3 Terms and definitions
12 4 Symbols and units
14 5 Abbreviated terms
6 Marine energy converter power quality characteristic parameters
6.1 Overview
6.2 Marine energy converter specification
15 6.3 Voltage fluctuations (continuous operations)
6.3.1 General
6.3.2 Continuous operation: MV connected systems
16 6.3.3 Continuous operation: LV connected system
6.4 Current harmonics, interharmonics and higher frequency components
Tables
Table 1 – Marine energy – resource classification
17 6.5 Response to voltage drops
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)
18 6.6 Active power
6.6.1 Maximum measured power
6.6.2 Ramp rate limitation
6.6.3 Set-point control
Figures
Figure 1 – Adjustment of active power set-point
19 6.7 Reactive power
6.7.1 Reactive power capability
6.7.2 Set-point control
7 Test procedures
7.1 General
7.1.1 Overview
Figure 2 – Adjustment of reactive power set-point
20 7.1.2 Test validity
7.1.3 Test conditions
Table 3 – Measurement ranges to be excluded
21 7.1.4 Test equipment
Figure 3 – Assumed elements of measurement system(MV-connected marine energy converter unit)
22 Figure 4 – Assumed elements of measurement system(LV-connected marine energy converter)
Table 4 – General specification of requirements for measurement equipment
23 Figure 5 – Assumed elements of wave energy converter powerquality measurement system
Table 5 – Specification of requirements for wave measurement equipment
24 Figure 6 – Assumed elements of tidal energy converter unit powerquality measurement system
Table 6 – Specification of requirements for tidal velocity measurement equipment
25 7.2 Voltage fluctuations (continuous operation)
7.2.1 MV connected marine energy converters
7.2.2 Fictitious grid
Figure 7 – Fictitious grid for simulation of fictitious voltage
27 7.2.3 Continuous operation – MV connected marine energy converters
28 7.2.4 Continuous operation – LV connected marine energy converters
7.3 Current harmonics, interharmonics and higher frequency components
29 7.4 Response to temporary voltage drop
30 Figure 8 – System with short circuit emulator for testingMEC unit response to temporary voltage drop
31 7.5 Active power
7.5.1 General
7.5.2 Maximum measured power
Figure 9 – Tolerance of voltage drop
32 7.5.3 Ramp rate limitation
7.5.4 Set point control
7.6 Reactive power
7.6.1 General
7.6.2 Reactive power capability
33 7.6.3 Set point control
34 8 Determination of power quality
8.1 General
8.2 Voltage fluctuations (continuous operation)
8.2.1 MV connected marine energy converter units
35 8.2.2 LV connected marine energy converter
36 8.3 Current harmonics, interharmonics and higher frequency components
Table 7 – Specification of exponents according to IEC TR 61000-3-6
38 Annex A (informative)Sample report format
A.1 General
Table A.1 – General marine energy converter information
Table A.2 – Marine energy converter nameplate ratings
39 A.2 Marine energy converter rated data at terminals
A.3 Voltage fluctuations (continuous operation)
Table A.3 – Test information
Table A.4 – Marine energy converter rated data at terminals
Table A.5 – Reactive set-point control
40 Table A.6 – Flicker index (coefficient or disturbance factor) data
Table A.7 – Flicker coefficient as a function of resource conditions
41 Annex B (informative)Voltage fluctuations and flicker
B.1 Medium voltage (MV) connected converters
Figure B.1 – Measurement and assessment procedures for flicker during continuous operation of the marine energy converter (MV-connected converter)
42 B.2 Low voltage (LV) connected converters
Figure B.2 – Measurement and assessment procedures for flicker during continuous operation of the marine energy converter (LV-connected converter)
43 Annex C (informative)Measurement of active power, reactive power and voltage
45 Bibliography
BSI PD IEC TS 62600-30:2018
$189.07