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GB/T 12326-2008   Power quality - Voltage fluctuation and flicker (English Version)
Standard No.: GB/T 12326-2008 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 4000 words Price(USD):80.0 remind me the price change

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Implemented on:2009-5-1 Delivery: via email in 1 business day
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Standard No.: GB/T 12326-2008
English Name: Power quality - Voltage fluctuation and flicker
Chinese Name: 电能质量 电压波动和闪变
Chinese Classification: F20    
Professional Classification: GB    National Standard
Issued by: AQSIQ; SAC
Issued on: 2008-6-18
Implemented on: 2009-5-1
Status: valid
Superseding:GB 12326-2000 Power quality--Voltage fluctuation and flicker
Language: English
File Format: PDF
Word Count: 4000 words
Price(USD): 80.0
Delivery: via email in 1 business day
1 Scope This standard specifies the limit, test, calculation and evaluation method of voltage fluctuation and flicker. This standard is applicable to the occasion of rapid change for voltage of point of common coupling caused by fluctuating load and thereby obvious sense to lighting flicker for human under normal operation mode of AC 50Hz power system. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent modification to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard. GB/T 156-2007 "Standard Voltage" (IEC 60038:2002, MOD) GB 17625.2 "Electromagnetic Compatibility (EMC)-Limits-Limitation of Voltage Changes, Voltage Fluctuations and Flicker in Public Low-voltage Supply Systems for Equipment with Rated Current≤16A per Phase and Not Subject to Conditional Connection"(GB 17625.2-2007, IEC 61000-3-3:2005, IDT) GB/Z 17625.3 "Electromagnetic Compatibility-Limits-Limitation of Voltage Fluctuations and Flicker in Low-voltage Power Supply Systems for Equipment with Rated Current Greater than 16A"(GB/Z 17625.3-2007, idt IEC 61000-3-5:1994) IEC 61000-4-15:1996 "Electromagnetic Compatibility (EMC)-Testing and Measurement Techniques-Flickermeter-Functional and Design Specifications" 3 Terms and Definitions For the purpose of this standard, the following terms and definitions apply. 3.1 Point of common coupling PCC It refers to the joint of more then one users in power system. 3.2 Fluctuating load It refers to the load periodically or aperiodically adopting change power from power supply network during production (or operation) process. For example: electric-arc steel furnace, rolling mill and arc welding machine. 3.3 Voltage fluctuation It refers to the change of a series of change or connection for voltage root mean square value (effective value). 3.4 R.M.S. voltage shape U(t) It refers to the time function of root mean square value (effective value) per half fundamental wave voltage cycle. 3.5 Relative voltage change d It refers to the difference of voltages of two adjacent extreme points on R.M.S. voltage shape, which is expressed with percentage of nominal voltage of system. 3.6 Rate of occurrence of voltage changes r It refers to the times of relative voltage change in unit time (respectively calculating one change of voltage from large to small or from small to large). Several times change of different directions shall be calculated as one change if the interval time is less than 30ms. 3.7 Flicker It refers to the visual sense caused by instable lighting illumination. 3.8 Short term severity Pst It refers to one statistic value measuring strong or weak flicker within a short time (several minutes) (see Appendix A), and the basic record cycle of flicker within a short time is 10min. 3.9 Long term severity Plt It refers to the quantity value reflecting strong or weak flicker for a long time (several hours) and predicted by short term severity Pst (see Appendix A), and the basic record of flicker for a long time is 2h. 3.10 Cumulative probability function CPF The lateral coordinate expresses the measured value and the longitudinal coordinate expresses the percentage of time exceeding corresponding lateral coordinate value accounting for the whole measuring time (See Figure A.2).
Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Limit of Voltage Fluctuation 5 Limit of Flicker 6 Measurement and Estimation of Voltage Fluctuation 7 Measurement and Calculation of Flicker 8 Superposition and Transfer of Flicker Appendix A (Normative) Measurement and Calculation Formulae of Flicker Appendix B (Informative) Estimation Method for high-voltage (HV) Total Power Supply Quantity StHV Appendix C (Informative) Flicker Estimation Method of Arc Furnace Appendix D (Informative) Statistic Method for Qualification Rate of Flicker
Referred in GB/T 12326-2008:
*GB/T 156-2007 Standard voltage
*GB 17625.2-2007 Electromagnetic compatibility (EMC)—Limits—Limitation of voltage changes,voltage fluctuations and flicker in public low-voltage supply systems,for equipment with rated current ≤16 A pe
*GB/Z 17625.3-2000 Electromagnetic compatibility--Limits--Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 16A
GB/T 12326-2008 is referred in:
* Q/GDW 392-2009 Technical rule for connecting wind farm to power network
* GB/T 19963-2011 Technical rule for connecting wind farm to power system
* Q/GDW 1650.2-2014 Technical specification of power quality monitoring Part 2: Power quality monitoring device
* Q/GDW 1650.1-2014 Technical specification of power quality monitoring Part 1: Power quality monitoring master station
* GB/T 31464-2015 The grid operation code
*NB/T 33015-2014 Technical guideline for electrochemical energy storage system interconnecting with distribution network
*GB/T 19964-2012 Technical requirements for connecting photovoltaic power station to power system
*GB/T 29319-2012 Technical requirements for connecting photovoltaic power system to distribution network
*DL/T 1040-2007 The grid operation code
*Q/GDW 617-2011 Technical rule for photovoltaic power station connected to Power Grid
*Q-GDW 618-2011 Test Procedures for photovoltaic power station connected to Power Grid
*GB/T 34120-2017 Technical specification for power conversion system of electrochemical energy storage system
*Q/GDW 564-2010 Technical guideline for electric energy storage system interconnecting to distribution network
*GB/T 36994-2018 Wind turbines—Test procedure of grid adaptability
*NB/T 33016-2014 Code for testing of electrochemical energy storage system interconnecting with distribution network
*T/CNESA 1202-2020 General technical requirements for flywheel energy storage systems
*GB/T 33593-2017 Technical requirements for grid connection of distributed resources
*SH/T 3060-2013 Code for design of power supply system in petrochemical enterprises
*CNCA/CTS 0004-2009A Technical Specification of Grid-connected PV inverter
*GB/T 36548-2018 Test specification for electrochemical energy storage system connected to power grid
*GB/T 36547-2018 Technical rule for electrochemical energy storage system connected to power grid
*Q/GDW 677-2011 Function Specifications for Connecting Distribution Generation into Distribution Network Monitoring System
*Q/GDW 1480-2015 Technical rule for distributed resources connected to power grid
*Q/GDW 666-2011 Technology Specification for Testing of Connecting Distribution Generation into Distribution Network
*Q/GDW 667-2011 Operation Control Specifications for Connecting Distribution Generation into Distribution Network
*GB/T 34129-2017 Specification for test of microgrid connected to distribution network
*GB/T 36558-2018 General technical requirements for electrochemical energy storage system in power system
*GB/T 37408-2019 Technical requirements for photovoltaic gird-connected inverter
*GB/T 36558-2023 General technical requirements for electrochemical energy storage system of power system
*GB/T 34120-2023 Technical requirements for power conversion system of electrochemical energy storage system
*GB/T 34133-2023 Testing code for power conversion system of energy storage system
*GB/T 43526-2023 Technical requirements for connecting user-side electrochemical energy storage system to distribution network
*GB/T 36547-2024 Technical requirements for connecting electrochemical energy storage station to power grid
*GB/T 36548-2024 Test code for electrochemical energy storage station connected to power grid
*GB/T 19964-2024 Technical requirements for connecting photovoltaic power station to power system
*GB/T 19963.1-2021 Technical specification for connecting wind farm to power system—Part 1: On shore wind power
*Q/GDW 618-2011 Test Procedures for photovoltaic power station connected to Power Grid
*GB/T 45562-2025 Heavy mechanical—Design specifications for automation system
Code of China
Standard
GB/T 12326-2008  Power quality - Voltage fluctuation and flicker (English Version)
Standard No.GB/T 12326-2008
Statusvalid
LanguageEnglish
File FormatPDF
Word Count4000 words
Price(USD)80.0
Implemented on2009-5-1
Deliveryvia email in 1 business day
Detail of GB/T 12326-2008
Standard No.
GB/T 12326-2008
English Name
Power quality - Voltage fluctuation and flicker
Chinese Name
电能质量 电压波动和闪变
Chinese Classification
F20
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2008-6-18
Implemented on
2009-5-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB 12326-2000 Power quality--Voltage fluctuation and flicker
Language
English
File Format
PDF
Word Count
4000 words
Price(USD)
80.0
Keywords
GB/T 12326-2008, GB 12326-2008, GBT 12326-2008, GB/T12326-2008, GB/T 12326, GB/T12326, GB12326-2008, GB 12326, GB12326, GBT12326-2008, GBT 12326, GBT12326
Introduction of GB/T 12326-2008
1 Scope This standard specifies the limit, test, calculation and evaluation method of voltage fluctuation and flicker. This standard is applicable to the occasion of rapid change for voltage of point of common coupling caused by fluctuating load and thereby obvious sense to lighting flicker for human under normal operation mode of AC 50Hz power system. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent modification to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard. GB/T 156-2007 "Standard Voltage" (IEC 60038:2002, MOD) GB 17625.2 "Electromagnetic Compatibility (EMC)-Limits-Limitation of Voltage Changes, Voltage Fluctuations and Flicker in Public Low-voltage Supply Systems for Equipment with Rated Current≤16A per Phase and Not Subject to Conditional Connection"(GB 17625.2-2007, IEC 61000-3-3:2005, IDT) GB/Z 17625.3 "Electromagnetic Compatibility-Limits-Limitation of Voltage Fluctuations and Flicker in Low-voltage Power Supply Systems for Equipment with Rated Current Greater than 16A"(GB/Z 17625.3-2007, idt IEC 61000-3-5:1994) IEC 61000-4-15:1996 "Electromagnetic Compatibility (EMC)-Testing and Measurement Techniques-Flickermeter-Functional and Design Specifications" 3 Terms and Definitions For the purpose of this standard, the following terms and definitions apply. 3.1 Point of common coupling PCC It refers to the joint of more then one users in power system. 3.2 Fluctuating load It refers to the load periodically or aperiodically adopting change power from power supply network during production (or operation) process. For example: electric-arc steel furnace, rolling mill and arc welding machine. 3.3 Voltage fluctuation It refers to the change of a series of change or connection for voltage root mean square value (effective value). 3.4 R.M.S. voltage shape U(t) It refers to the time function of root mean square value (effective value) per half fundamental wave voltage cycle. 3.5 Relative voltage change d It refers to the difference of voltages of two adjacent extreme points on R.M.S. voltage shape, which is expressed with percentage of nominal voltage of system. 3.6 Rate of occurrence of voltage changes r It refers to the times of relative voltage change in unit time (respectively calculating one change of voltage from large to small or from small to large). Several times change of different directions shall be calculated as one change if the interval time is less than 30ms. 3.7 Flicker It refers to the visual sense caused by instable lighting illumination. 3.8 Short term severity Pst It refers to one statistic value measuring strong or weak flicker within a short time (several minutes) (see Appendix A), and the basic record cycle of flicker within a short time is 10min. 3.9 Long term severity Plt It refers to the quantity value reflecting strong or weak flicker for a long time (several hours) and predicted by short term severity Pst (see Appendix A), and the basic record of flicker for a long time is 2h. 3.10 Cumulative probability function CPF The lateral coordinate expresses the measured value and the longitudinal coordinate expresses the percentage of time exceeding corresponding lateral coordinate value accounting for the whole measuring time (See Figure A.2).
Contents of GB/T 12326-2008
Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Limit of Voltage Fluctuation 5 Limit of Flicker 6 Measurement and Estimation of Voltage Fluctuation 7 Measurement and Calculation of Flicker 8 Superposition and Transfer of Flicker Appendix A (Normative) Measurement and Calculation Formulae of Flicker Appendix B (Informative) Estimation Method for high-voltage (HV) Total Power Supply Quantity StHV Appendix C (Informative) Flicker Estimation Method of Arc Furnace Appendix D (Informative) Statistic Method for Qualification Rate of Flicker
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Keywords:
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