This part of IEC 62600 includes:<\/p>\n
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;<\/p>\n<\/li>\n
measurement procedures for quantifying the characteristics of a marine energy (wave, tidal and other water current) converter.<\/p>\n<\/li>\n<\/ul>\n
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\u2013connected and LV-connected devices are defined as:<\/p>\n
MV connected units \u2013 typically multiple three-phase MEC units operating as a marine power farm and delivering power through a HV or MV network;<\/p>\n<\/li>\n
LV connected units \u2013 typically single-phase or three-phase units deployed in isolated, hybrid or micro-grid type systems supplying small-scale loads.<\/p>\n<\/li>\n<\/ul>\n
Considering the nascent status of the marine energy sector, the following limitations of this document are to be recognized:<\/p>\n
voltage fluctuations under switching operation \u2013 the current revision only considers voltage fluctuations under continuous operation;<\/p>\n<\/li>\n
resource classifications \u2013 to categorize the measured flicker quantities, various resource classes are suggested only as guidelines. The user is advised to use these resource classes judiciously.<\/p>\n<\/li>\n<\/ul>\n
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.<\/p>\n
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.<\/p>\n
\nNOTE This document uses the following terms for system voltage:<\/p>\n<\/blockquote>\n
\n
- \n
low voltage (LV) refers to Un<\/sub> <= 1 kV;<\/p>\n<\/li>\n
- \n
medium voltage (MV) refers to 1 kV < Un<\/sub> <= 35 kV;<\/p>\n<\/li>\n
- \n
high voltage (HV) refers to Un<\/sub> > 35 kV.<\/p>\n<\/li>\n<\/ul>\n
PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 7<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 9<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 10<\/td>\n 1 Scope <\/td>\n<\/tr>\n \n 11<\/td>\n 2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n\n 12<\/td>\n 4 Symbols and units <\/td>\n<\/tr>\n \n 14<\/td>\n 5 Abbreviated terms
6 Marine energy converter power quality characteristic parameters
6.1 Overview
6.2 Marine energy converter specification <\/td>\n<\/tr>\n\n 15<\/td>\n 6.3 Voltage fluctuations (continuous operations)
6.3.1 General
6.3.2 Continuous operation: MV connected systems <\/td>\n<\/tr>\n\n 16<\/td>\n 6.3.3 Continuous operation: LV connected system
6.4 Current harmonics, interharmonics and higher frequency components
Tables
Table 1 \u2013 Marine energy \u2013 resource classification <\/td>\n<\/tr>\n\n 17<\/td>\n 6.5 Response to voltage drops
Table 2 \u2013 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) <\/td>\n<\/tr>\n\n 18<\/td>\n 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 \u2013 Adjustment of active power set-point <\/td>\n<\/tr>\n\n 19<\/td>\n 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 \u2013 Adjustment of reactive power set-point <\/td>\n<\/tr>\n\n 20<\/td>\n 7.1.2 Test validity
7.1.3 Test conditions
Table 3 \u2013 Measurement ranges to be excluded <\/td>\n<\/tr>\n\n 21<\/td>\n 7.1.4 Test equipment
Figure 3 \u2013 Assumed elements of measurement system(MV-connected marine energy converter unit) <\/td>\n<\/tr>\n\n 22<\/td>\n Figure 4 \u2013 Assumed elements of measurement system(LV-connected marine energy converter)
Table 4 \u2013 General specification of requirements for measurement equipment <\/td>\n<\/tr>\n\n 23<\/td>\n Figure 5 \u2013 Assumed elements of wave energy converter powerquality measurement system
Table 5 \u2013 Specification of requirements for wave measurement equipment <\/td>\n<\/tr>\n\n 24<\/td>\n Figure 6 \u2013 Assumed elements of tidal energy converter unit powerquality measurement system
Table 6 \u2013 Specification of requirements for tidal velocity measurement equipment <\/td>\n<\/tr>\n\n 25<\/td>\n 7.2 Voltage fluctuations (continuous operation)
7.2.1 MV connected marine energy converters
7.2.2 Fictitious grid
Figure 7 \u2013 Fictitious grid for simulation of fictitious voltage <\/td>\n<\/tr>\n\n 27<\/td>\n 7.2.3 Continuous operation \u2013 MV connected marine energy converters <\/td>\n<\/tr>\n \n 28<\/td>\n 7.2.4 Continuous operation \u2013 LV connected marine energy converters
7.3 Current harmonics, interharmonics and higher frequency components <\/td>\n<\/tr>\n\n 29<\/td>\n 7.4 Response to temporary voltage drop <\/td>\n<\/tr>\n \n 30<\/td>\n Figure 8 \u2013 System with short circuit emulator for testingMEC unit response to temporary voltage drop <\/td>\n<\/tr>\n \n 31<\/td>\n 7.5 Active power
7.5.1 General
7.5.2 Maximum measured power
Figure 9 \u2013 Tolerance of voltage drop <\/td>\n<\/tr>\n\n 32<\/td>\n 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 <\/td>\n<\/tr>\n\n 33<\/td>\n 7.6.3 Set point control <\/td>\n<\/tr>\n \n 34<\/td>\n 8 Determination of power quality
8.1 General
8.2 Voltage fluctuations (continuous operation)
8.2.1 MV connected marine energy converter units <\/td>\n<\/tr>\n\n 35<\/td>\n 8.2.2 LV connected marine energy converter <\/td>\n<\/tr>\n \n 36<\/td>\n 8.3 Current harmonics, interharmonics and higher frequency components
Table 7 \u2013 Specification of exponents according to IEC TR 61000-3-6 <\/td>\n<\/tr>\n\n 38<\/td>\n Annex A (informative)Sample report format
A.1 General
Table A.1 \u2013 General marine energy converter information
Table A.2 \u2013 Marine energy converter nameplate ratings <\/td>\n<\/tr>\n\n 39<\/td>\n A.2 Marine energy converter rated data at terminals
A.3 Voltage fluctuations (continuous operation)
Table A.3 \u2013 Test information
Table A.4 \u2013 Marine energy converter rated data at terminals
Table A.5 \u2013 Reactive set-point control <\/td>\n<\/tr>\n\n 40<\/td>\n Table A.6 \u2013 Flicker index (coefficient or disturbance factor) data
Table A.7 \u2013 Flicker coefficient as a function of resource conditions <\/td>\n<\/tr>\n\n 41<\/td>\n Annex B (informative)Voltage fluctuations and flicker
B.1 Medium voltage (MV) connected converters
Figure B.1 \u2013 Measurement and assessment procedures for flicker during continuous operation of the marine energy converter (MV-connected converter) <\/td>\n<\/tr>\n\n 42<\/td>\n B.2 Low voltage (LV) connected converters
Figure B.2 \u2013 Measurement and assessment procedures for flicker during continuous operation of the marine energy converter (LV-connected converter) <\/td>\n<\/tr>\n\n 43<\/td>\n Annex C (informative)Measurement of active power, reactive power and voltage <\/td>\n<\/tr>\n \n 45<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Marine energy. Wave, tidal and other water current converters – Electrical power quality requirements<\/b><\/p>\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2018<\/td>\n 46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":250380,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-250377","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/250377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/250380"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=250377"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=250377"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=250377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}