NB/T 10327-2019 English PDFUS$809.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. NB/T 10327-2019: Low-voltage active three-phase unbalanced load regulator Status: Valid
Basic dataStandard ID: NB/T 10327-2019 (NB/T10327-2019)Description (Translated English): Low-voltage active three-phase unbalanced load regulator Sector / Industry: Energy Industry Standard (Recommended) Classification of Chinese Standard: K46 Classification of International Standard: 29.240.99 Word Count Estimation: 36,373 Date of Issue: 1900-01-20 Date of Implementation: 1900-01-20 Issuing agency(ies): National Energy Administration NB/T 10327-2019: Low-voltage active three-phase unbalanced load regulator---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Low-voltage active three-phase unbalanced load regulator ICS 29.240.99 K 44 NB Energy Industry Standards of the People's Republic of China Low-voltage active three-phase unbalance adjusting device 2019-12-30 released 2020-07-01 implementation Issued by National Energy Administration Table of contentsForeword...III 1 Scope...1 2 Normative references...1 3 Terms and definitions...2 4 Model naming...4 5 Conditions of use...4 5.1 Normal use conditions...4 5.2 Special conditions of use...5 6 Technical requirements for basic circuit and component equipment...5 6.1 Basic circuit...5 6.2 Technical requirements for component equipment...6 7 Technical requirements...8 7.1 Appearance and structure...8 7.2 Selection and installation of components and accessories...8 7.3 Safety and protection...8 7.4 Clearance and creepage distance...9 7.5 Insulation level of the device...10 7.6 Protection and alarm functions...11 7.7 Operating mode requirements...11 7.8 Operating performance requirements...12 7.9 Operating environment...13 7.10 Electromagnetic compatibility...13 8 Test...14 8.1 Test conditions...14 8.2 Test items...14 9 Inspection Rules...18 9.1 Overview...18 9.2 Routine test...18 9.3 Type test...18 9.4 Field test...18 10 Logo, nameplate...20 10.1 Marks and labels...20 10.2 Nameplate...20 11 Packaging, transportation and storage...20 11.1 Packaging...20 11.2 Transport...21 11.3 Storage...21 11.4 Documents supplied with the device...21 11.5 Accessories provided with the device...21 Appendix A (informative appendix) How the device works...22 A.1 Overview...22 A.2 Device working principle and typical circuit...22 Appendix B (informative appendix) Electrical conditions of grid connection points...24 B.1 Overview...24 B.2 Device access point...24 B.3 Calculation formula of device compensation current...24 Appendix C (informative appendix) Parameter selection of device filter unit and DC capacitor...25 C.1 Overview...25 C.2 Filter unit parameter selection...25 C.3 DC side capacitor bank parameter selection...25ForewordThe preparation of this standard is based on the rules given in GB/T 1.1-2009 "Guidelines for Standardization Part 1.Standard Structure and Compilation". This standard was proposed by China Electrical Equipment Industry Association. This standard is under the jurisdiction of the Energy Industry Reactive Power Compensation and Harmonic Control Equipment Standardization Technical Committee (NEA/TC 9). This standard is interpreted by the Energy Industry Reactive Power Compensation and Harmonic Control Equipment Standardization Technical Committee. Responsible for drafting this standard. Shenzhen Sanhe Electric Power Technology Co., Ltd., Xi’an High Voltage Apparatus Research Institute Co., Ltd., Hefei Hua Wei Automation Co., Ltd., Xi'an Aike Saibo Electric Co., Ltd., Shanghai Nanzi Technology Co., Ltd., Jiangsu Huaguan Electric Group Co., Ltd., Herong Electric Co., Ltd., Hangzhou Yiluo Electrical Engineering Co., Ltd., Shanghai Siyuan Power Capacitor Co., Ltd., Guilin Power Capacitor Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, State Grid Anhui Electric Power Co., Ltd. Electric Power Section Research Institute, Xi'an Xidian Power Capacitor Co., Ltd., State Grid Zhejiang Hangzhou Xiaoshan Power Supply Company, State Grid Shaanxi Electric Power Company Electric Power Research Institute, Etros (Beijing) Electric Co., Ltd., State Grid Liaoning Electric Power Co., Ltd. Anshan Power Supply Company, Qingdao Ocean Electrical Equipment Testing Co., Ltd., Hefei University of Technology, Wuhan University of Technology, Hefei Handu Power Technology Co., Ltd., Anhui Jinyi Power Technology Co., Ltd., Jiangsu LTECH Electric Co., Ltd., Hebei Xuhui Electric Co., Ltd., Xi'an Xidian Electric Research Institute Co., Ltd. Ren company, Shenzhen Power Technology Co., Ltd., Zhejiang Shitong Electric Manufacturing Co., Ltd., Siyuan Qingneng Electric and Electronic Co., Ltd. The main drafters of this standard. Lu Tao, Yuan Fuxing, Jia Yifan, Ren Haiku, Lu Yao, Li Bin, Huawenda, Wang Yao, Wang Chonghu, Tian En Wen, Hu Zhilong, Yu Litian, Li Dian, Xu Fan, Jiang Junxiang, Liu Jing, Peng Yanghan, Yang Wei, Tao Mei, Jin Yongtao, Jia Hua, Liang Cong, Deng Jun Feng, Ye Jian, Zhang Xiujuan, Sun Mei, Zhang Jianhu, Ju Zeli, Liu Xuefei, Jiang Xiaogang, Xu Chongfu, Jiang Zhenhua, Ma Fan, Huang Haihong, Zhang Chen Chen, Ge Shaozhi, Wu Xixiu, Han Jinsong, Wang Qihua, Zhang Jianping, Lin Chuan, Li Jun, Gao Shan, Ye Shuxin, Gao Huarong. This standard is formulated for the first time. Low-voltage active three-phase unbalance adjusting device1 ScopeThis standard specifies the terms and definitions, model naming, usage conditions, basic circuits and components of low-voltage active three-phase unbalanced regulators Equipment technical requirements, technical requirements, test, inspection rules, marking, packaging, transportation, and storage requirements. This standard is applicable to AC power systems with a nominal voltage of 1 000 V and below. The variable current technology is used to balance the automatic adjustment of the three-phase load current. Section device (hereinafter referred to as device), see Appendix A for the working principle of the device. Note. Refer to this standard for devices used in 1140 V AC power systems.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 1094.6 Power Transformer Part 6.Reactor GB/T 2423.1-2008 Environmental testing of electric and electronic products Part 2.Test method Test A. Low temperature GB/T 2423.2-2008 Environmental testing of electric and electronic products Part 2.Test method Test B. High temperature GB/T 2423.3 Environmental testing of electrical and electronic products Part 2.Test method Test Cab. Constant damp heat test GB/T 2423.4 Environmental testing of electrical and electronic products Part 2.Test method Test Db Alternating damp heat (12h + 12h cycle) GB 2894-2008 Safety signs and guidelines for their use GB/T 2900.33-2004 Electrical terminology power electronic technology GB 3096 Acoustic Environmental Quality Standard GB/T 3859.1 General requirements for semiconductor converters and power grid commutated converters Part 1-1.Basic requirements specification GB/T 4025 Basic and safety rules for human-machine interface signs and coding rules for indicators and operators GB/T 4208-2017 Enclosure protection grade (IP code) GB 4824 Industrial, scientific and medical (ISM) radio frequency equipment disturbance characteristic limits and measurement methods GB/T 7261 Basic test methods for relay protection and safety automatic devices GB/T 7947 Basic and safety rules for human-machine interface logo identification Conductor color or alphanumeric identification GB/T 9969 General Rules for the Use of Industrial Products GB/T 10233-2005 Basic test methods for low-voltage switchgear and electric control equipment GB/T 11032 AC gapless metal oxide surge arrester GB/T 13539.1 Low-voltage fuses Part 1.Basic requirements GB/T 14048.2 Low Voltage Switchgear and Control Equipment Part 2.Circuit Breaker GB/T 14048.3 Low-Voltage Switchgear and Control Equipment Part 3.Switches, Isolators, Isolating Switches and Fuse Combinations GB/T 14048.4 Low-voltage switchgear and control equipment Part 4-1.Contactors and motor starters Electromechanical contactors and electric Motor starter (including motor protector) GB/T 14549 Power quality public grid harmonics GB/T 14860.1 Transformers and inductors for electronic and communication equipment Part 1.General specifications GB/T 15576-2008 Low-voltage complete set of reactive power compensation device GB/T 16935.1-2008 Insulation coordination of equipment in low-voltage systems Part 1.Principles, requirements and tests GB/T 17626.2-2006 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology Radio frequency magnetic field radiation immunity test GB/T 17626.4-2008 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test GB/T 17626.5-2008 Electromagnetic compatibility test and measurement technology surge (impact) immunity test GB/T 17626.12-2013 Electromagnetic compatibility test and measurement technology Ring wave immunity test GB/T 17702 Power Electronic Capacitor GB/T 20840.1 Transformer Part 1.General Technical Requirements GB/T 20840.2 Transformers Part 2.Supplementary technical requirements for current transformers GB/T 20840.3 Transformer Part 3.Supplementary Technical Requirements for Voltage Transformer JB/T 6319 Basic technical requirements for resistors3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 Power supply region (One) The power supply range or area of the transformer. 3.2 Three-phase current unbalance rate In a three-phase AC circuit, take the absolute maximum value of the difference between the effective value of the three-phase current and its arithmetic average value, and the ratio to the average value in percentage Number representation. The following formula applies to three-phase three-wire and three-phase four-wire. In three-phase four-wire, there is no need to calculate the neutral current. 3.3 [Electricity] [Electronics] Converter (electronics) (power) conversion Commutation With the help of electronic valve devices, one or more characteristics of the power system are changed, and there is basically no considerable loss. Note. For example, the characteristics are voltage, phase number, and frequency (including zero frequency). [GB/T 2900.33-2004, definition 551-11-02] 3.4 [Power] [Electronics] Converter (electronics) (power) converter Inverter An operating unit consisting of one or more valve devices, transformer/filter (if necessary) and auxiliary equipment (if any). Note. The English term "converter" is spelled "converter" and "convertor", both of which are correct. This standard uses "converter". [GB/T 2900.33-2004, definition 551-12-01] 3.5 Rated voltage UN The nominal voltage of the device to be connected to the grid. 3.6 Rated current IN Under rated conditions, the effective value of the allowable power frequency current when the device works continuously for a long time. Note. Rewrite DL/T 1216-2013, definition 3.7. 3.7 Rated capacity QN Under rated conditions, the reactive power output when the device is running at rated current, in kilovar (kvar). 3.8 No-load operation state After precharging and pulse width modulation, the DC bus voltage is maintained at a given value, and the device does not output compensation current. 3.9 Rated loss Under rated voltage, when the device output is rated current, the active power measured at its input. 3.10 Control range The maximum variation range of the controllable output electrical quantity provided by the device at the connection point of the device and the AC system. [DL/T 1193-2012, definition 3.5.2] 3.11 Step response time When the step control signal is input, the time it takes for the output electrical quantity of the device to reach 90% of the target value from 0 to the target value, and there is no Overshoot. see picture 1. [DL/T 1193-2012, definition 3.5.14] Figure 1 Definition of step response time4 Model namingThe model of the device is composed of five parts. category code, design serial number, rated capacity, rated voltage, and characteristic code. Its specific name The method is shown in Figure 2.5 Conditions of use5.1 Normal use conditions 5.1.1 Ambient air temperature The ambient air temperature should not exceed +40 ℃, and its average temperature within 24 h should not exceed +35 ℃; 5.1.2 Relative humidity The ambient air temperature is 30 ℃, and the relative humidity is not more than 93%. 5.1.3 Contamination level The pollution degree does not exceed the c level. 5.1.4 Altitude The altitude is.2000 m and below. 5.1.5 Anti-seismic level The horizontal acceleration is not more than 2 m/s2; the vertical acceleration is not more than 1 m/s2. 5.1.6 Wind speed The maximum wind speed at 10 m above the ground does not exceed 35 m/s. 5.1.7 Installation site conditions The installation site should be free of severe mechanical vibration and impact, no media that can cause fire and explosion hazards, and no corrosion or damage in the surrounding media The gas and conductive medium of the insulation and surface coating layer should be free of harmful gas and steam, and no serious molds are allowed. The device should not be exposed to strong electric and magnetic fields. See Appendix B for the electrical conditions of the grid connection points. 5.2 Special conditions of use If it is used under special conditions that do not comply with 5.1, a special agreement should be signed between the manufacturer and the purchaser.6 Technical requirements for basic circuits and components6.1 Basic circuit The device is mainly composed of grid-connected switch, lightning arrester, charging resistor, bypass switch, filter unit (connected inductance), converter bridge, DC capacitor It consists of a cooling device, a cooling fan, a control and monitoring system and other equipment. The basic circuit diagram is shown in Figure 3. Figure 3 Basic circuit of the device Note. The inverter unit is in the dotted frame. 6.2 Technical requirements for component equipment 6.2.1 Grid-connected switch (circuit breaker) Technical requirements include. a) Should meet the requirements of GB/T 14048.2; b) It should have the maximum output current of the switching device and the ability to break short-circuit current; 6.2.2 Lightning arrester Technical requirements include. a) The incoming line lightning arrester should use gapless metal oxide arrester; b) The rated voltage should be the upper limit of the normal operating line voltage with a certain margin; c) The flow capacity of the arrester should be verified to ensure safe operation; d) Should meet the requirements of GB/T 11032. 6.2.3 Charging resistance Technical requirements include. a) It should be able to limit the charging current of the DC capacitor under the design value when the device is put into use; b) It should be able to withstand the maximum impact power without any thermal and/or mechanical damage; c) Should meet the requirements of JB/T 6319. 6.2.4 Bypass switch 6.2.5 Filter unit (connect inductance) Technical requirements include. a) The filter unit should be able to limit the high frequency harmonic current below the allowable value; b) The fundamental reactive power generated by the filter capacitor should not exceed the allowable value; c) The reactor should meet the requirements of GB/T 1094.6 and GB/T 14860.1; d) The capacitor should meet the requirements of GB/T 17702. Refer to Appendix C.2 for filter unit parameter selection 6.2.6 Converter bridge The converter bridge should be designed according to the system operating conditions and performance requirements, including. a) The converter bridge should be able to withstand the impact of overvoltage and overcurrent caused by system faults and switching operations; b) When designing the converter bridge, full consideration should be given to reducing the possible adverse effects of the distributed parameters of power electronic devices, and appropriate margins should be considered. degree; c) The converter bridge should have the ability to prevent false triggering or tolerate false triggering; d) Should meet the requirements of GB/T 3859.1. 6.2.7 DC capacitor Technical requirements include. a) It should be able to meet the requirements of device capacity; b) It should be able to limit the DC voltage fluctuation range within the allowable value; c) Should meet the requirements of GB/T 17702. Refer to Appendix C.3 for parameter selection of DC capacitor bank 6.2.8 Cooling fan The cooling fan should have sufficient heat dissipation capacity, and the protection level of the device, the influence of the installation location, and the cooling of the inverter unit should be considered. But the way matches. 6.2.9 Control and monitoring system Technical requirements include. a) The control function can include the following options. 1) Compensation for three-phase unbalanced current; 2) Compensation of reactive current; 3) Compensation of harmonic currents; 4) Comprehensive compensation. b) The monitoring system should have fault protection function; c) The device should be equipped with a wireless communication module, which can realize information interaction and remote control with mobile terminals; d) The device should be able to ensure that data will not be lost after power failure; e) The device should have the necessary logic interlock function to prevent misoperation. 6.2.10 Other equipment requirements Other equipment (such as isolation switches, fuses, current transformers, voltage transformers, etc.) refer to the requirements of the corresponding national standards, such as. a) Refer to GB/T 14048.3 for isolating switch; b) Refer to GB/T 13539.1 for fuses; c) Refer to GB/T 20840.1 and GB/T 20840.2 for current transformers, and outdoor opening and closing equipment should be adopted; d) Refer to GB/T 20840.1 and GB/T 20840.3 for voltage transformer.7 Technical requirements7.1 Appearance and structure The device structure and external dimensions are reasonable in design, suitable for single-pole or double-pole fixing, which is convenient for installation, inspection and maintenance. The device shell should be made of 2 mm thick stainless steel plate, which should be able to withstand the electric power and thermal stress that may be generated when the device is short-circuited. Meet the mechanical strength requirements during handling, installation and operation. The device should be equipped with lifting lugs for carrying, and equipped with locks to prevent rain, door shafts to prevent rust, and to prevent scratches and water ingress. The welded parts of the device should be welded firmly, and the welds should be uniform and beautiful, without weld penetration, cracks, undercuts, residues, pores, etc. There should be no rust or other mechanical damage on the surface of all metal parts of the device, and there should be a reliable anti-corrosion layer. The door of the device should be able to open and close flexibly within an angle of not less than 90°. The nameplate parameters are clearly marked and the data is correct. 7.2 Selection and installation of components and accessories All independent electrical components and accessories installed in the device shall comply with 6.2 of this standard and the relevant standards of components, and shall be in accordance with the manufacturer’s instructions. The book is installed. The arrangement of electrical components should be neat, correct, easy to install, wire, repair and replace. Components that need to be operated, adjusted and reset inside the device should be easy to operate. The colors of the indicator lights and buttons selected i......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of NB/T 10327-2019_English be delivered?Answer: Upon your order, we will start to translate NB/T 10327-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. 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