Standard No.:	GB/Z 43464-2023
English Name:	Electrical power quality requirement of marine energy converters
Chinese Name:	海洋能转换装置电能质量要求
Chinese Classification:	F14    Ocean energy
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2023-12-28
Implemented on:	2024-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	19000 words
Translation Price(USD):	570.0
Delivery:	via email in 1~3 business day

GB/Z 43464-2023 Electrical power quality requirement of marine energy converters 1 Scope This document specifies the definitions, measurement procedures and evaluation method of the power quality of a marine energy (wave, tidal and other water current) converter unit. It includes: a) 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; b) 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. This document only requires testing at the PCC (Point of Common Coupling) at Medium Voltage (MV) or High Voltage (HV) and evaluation. The measurement procedures apply to MEC of any size. 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: a) MV connected units -typically multiple three-phase MEC units operating as a marine power farm and delivering power through a HV or MV network; b) 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: a) voltage fluctuations under switching operation - the current revision only considers voltage fluctuations under continuous operation; b) 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 evaluation shall be conducted separately. This document is not applicable to Ocean Thermal Energy Conversion (OTEC) systems. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 17626.7-2017 Electromagnetic compatibility - Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto (IEC 61000-4-7:2009, IDT) IEC TR 61000-3-6:2008 Electromagnetic compatibility (EMC) - Part 3-6 : Limits - Assessment of emission limits for the connection of distorting installations to MV, HV and EHV power systems Note: GB/Z 17625.4-2000 Electromagnetic compatibility - Limits - Assessment of emission limits for distorting loads in MV and HV power systems (IEC61000-3-6:1996, IDT) IEC TR 61000-3-7:2008 Electromagnetic compatibility (EMC) - Part 3-7: Limits –Assessment of emission limits for the connection of fluctuating installations to MV, HV and EHV power systems Note: GB/Z 17625.5-2000 Electromagnetic compatibility - Limits - Assessment of emission limits for fluctuating loads in MV and HV power systems (IEC 61000-3-7:1996, IDT) IEC 61000-4-15:2010 Electromagnetic compatibility (EMC) - Part 4-15: Testing and measurement techniques - Flickermeter - Functional and design specifications Note: GB/T 17626.15-2011 Electromagnetic compatibility - Testing and measurement techniques - Flickermeter - Functional and design specifications (IEC 61000-4-15 :2003, IDT) IEC 61400-21 Wind turbines - Part 21 : Measurement and assessment of power quality characteristics of grid connected wind turbines Note 1: GB/T 20320-2023 Wind energy generation systems - Electrical characteristics measurement and assessment of wind turbines (IEC 61400-21-1 : 2019, IDT) Note 2: There is no technical difference between the cited contents of IEC 61400-21-1 and that of IEC 61400-21. IEC 61800-3:2022 Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods for PDS and machine tools Note 1: GB 12668.3-2012 Adjustable speed electrical power drive systems - Part 3 : EMC requirements and specific test methods (IEC 61800-3:2004, IDT) Note 2: There is no technical difference between the cited contents of IEC 61800-3:2022 and that of IEC 61800-3:2017. IEC 61869-1:2007 Instrument transformers - Part 1 : General requirements Note: GB/T 20840.1-2010 Instrument transformers - Part 1 : General requirements (IEC 61869-1:2007, MOD) IEC 61869-2:2012 Instrument transformers - Part 2 : Additional requirements for current transformers Note: GB/T 20840.2-2014 Instrument transformers - Part 2 : Additional requirements for current transformers (IEC 61869-2 : 2012, MOD) IEC 61869-3:2011 Instrument transformers - Part 3: Additional requirements for inductive voltage transformers) Note: GB/T 20840.3-2013 Instrument transformers - Part 3: Additional requirements for inductive voltage transformers (IEC 61869-3:2011, MOD) IEC 62008:2005 Performance characteristics and calibration methods for digital data acquisition systems and relevant software IEC TS 62600-100:2012 Marine energy- Wave, tidal and other water current converters - Part 100 : Electricity producing wave energy converters- Power performance assessment Note: GB/Z40295-2021 Power performance assessment of electricity producing wave energy converters (IEC TS 62600-100:2012, MOD) IEC TS 62600-101:2015 Marine energy - Wave, tidal and other water current converters Part 101: Wave energy resource assessment and characterization Note: GB/T 39571-2020 Wave energy resource assessment and characterization (IEC TS 62600-101:2015, MOD) IEC TS 62600-201:2015 Marine energy - Wave, tidal and other water current converters - Part 201 : Tidal energy resource assessment and characterization Note: GB/T 39569-2020 Tidal energy resource assessment and characterization (IEC TS 62600-201:2015, MOD) 3 Terms and definitions For purposes of this document, the following terms and definitions apply. 3.1 flicker impression of unsteadiness of visual sensation induced by a light stimulus whose luminance or spectral distribution fluctuates with time Note: Flicker is caused by rapid, regular changes to the voltage level of the electrical supply caused by devices connected to the electrical system. The voltage variations are caused by fluctuating power consumed or generated by a load or particularly renewable generator, more severely for reactive power fluctuations. [Source: GB/T 4365-2003, 161-08-13] 3.2 network impedance phase angle phase angle of network short-circuit impedance [see formula (1)] 3.3 point of common coupling; PCC point in an electric power system, electrically nearest to a particular load, at which other loads are, or may be, connected Note: These loads can be either devices, equipment or systems, or distinct network users' installations. [Source: GB/T 4365-2003, 161-07-15] 3.4 total harmonic distortion ratio of the RMS value of the harmonic content to the RMS value of the fundamental [Source: GB/T 2900.33-2004, 551-20-13, modified]