GB/T 30427-2013 PDF English

GB/T30427-2013 (GBT30427-2013): PDF in English

GB/T 30427-2013 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 27.160 F 12 Technical requirements and test methods for grid-connected PV inverters ISSUED ON: DECEMBER 31, 2013 IMPLEMENTED ON: AUGUST 15, 2014 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 4 Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 8 4 Product classification ... 10 4.1 Product type ... 10 4.2 Output power preferred numbers ... 10 5 Conditions of use ... 11 5.1 Environmental conditions for normal use ... 11 5.2 Grid conditions for normal use ... 11 5.3 Special conditions of use ... 12 6 Technical requirements ... 12 6.1 Body and structure quality ... 12 6.2 Performance indicators ... 12 6.3 Electromagnetic compatibility ... 14 6.4 Protection function ... 16 6.5 Communication ... 19 6.6 Automatic power on/off ... 19 6.7 Start-up... 19 6.8 Insulation and voltage resistance ... 19 6.9 Enclosure protection grade ... 20 6.10 Power control and voltage regulation ... 20 6.11 Environmental test requirements ... 21 6.12 Temperature rise ... 21 7 Test methods ... 22 7.1 Test environment conditions ... 22 7.2 General ... 23 7.3 Body and structure quality inspection ... 23 7.4 Performance indicator test ... 23 7.5 Electromagnetic compatibility test ... 24 7.6 Protection function test ... 25 7.7 Communication test ... 30 7.8 Automatic power on/off test ... 30 7.9 Start-up test ... 30 7.10 Insulation and voltage resistance test ... 30 7.11 Enclosure protection grade test ... 31 7.12 Power control and voltage regulation test ... 31 7.13 Environmental test ... 31 7.14 Temperature rise test ... 32 8 Inspection rules ... 32 8.1 Inspection classification ... 32 8.2 Ex-factory inspection ... 34 8.3 Type inspection ... 34 9 Marking, packaging, transportation and storage ... 34 9.1 Marking ... 34 9.2 Packaging ... 35 9.3 Transportation ... 36 9.4 Storage ... 36 Appendix A (Informative) Selection rules of the anti-islanding protection scheme ... 37 Appendix B (Informative) Technical parameters for grid-connected PV inverters ... 38 Technical requirements and test methods for grid-connected PV inverters 1 Scope This Standard specifies the terms and definitions, product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage for grid-connected PV inverters. This Standard applies to grid-connected PV inverters – hereinafter referred to as inverters – whose AC output terminal voltage does not exceed 0.4 kV. Note: According to the Technical rules for photovoltaic power station connected to power grid formulated by the State Grid Corporation of China, considering the technical requirements of power transmission and distribution capacity and power quality of power grids of different voltage levels, photovoltaic power stations can be divided into small, medium or large photovoltaic power stations according to the voltage level of photovoltaic power stations connected to. Small photovoltaic power station – photovoltaic power station connected to low-voltage power grid with a voltage level of 0.4 kV. Medium photovoltaic power station – photovoltaic power station connected to power grid with a voltage level of 10 kV ~ 35 kV. Large photovoltaic power station – photovoltaic power station connected to power grid with a voltage level of 66 kV or above. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies to this document. For undated references, the latest edition (including any amendment) applies to this document. GB/T 191, Packaging - Pictorial marking for handling of goods GB/T 2423.1-2008, Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold (IEC 60068-2-1: 2007, IDT) GB/T 2423.2-2008, Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat (IEC 60068-2-2:2007, IDT) GB/T 2423.3-2006, Environmental testing for electric and electronic products - Part 2: Testing method - Test Cab: Damp heat, steady state (IEC 60068-2-78:2001, IDT) GB/T 3859.2-2013, Semiconductor converters - General requirements and line commutated converters - Part 1-2: Application guide (IEC/TR 60146-1-2:2011, MOD) GB 4208-2008, Degrees of Protection Provided by Enclosure (IP Code) (IEC 60529:2001, IDT) GB 7260.2-2009, Uninterruptible power systems (UPS) - Part 2: Electromagnetic compatibility (EMC) requirements (IEC 62040-2:2005, IDT) GB/T 13384-2008, General specifications for packing of mechanical and electrical product GB/T 14549-1993, Quality of electric energy supply - Harmonics in public supply network GB/T 15543-2008, Power quality - Three-phase voltage GB/T 17626.2-2006, Electromagnetic compatibility (EMC) - Testing and measurement techniques - Electrostatic discharge immunity test (IEC 61000-4- 2:2001, IDT) GB/T 17626.3-2006, Electromagnetic compatibility - Testing and measurement techniques - Radiated radio-frequency electromagnetic field immunity test (IEC 61000-4-3:2002, IDT) GB/T 17626.4-2008, Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test (IEC 61000-4-4:2004, IDT) GB/T 17626.5-2008, Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test (IEC 61000-4-5:2005, IDT) GB/T 17626.6-2008, Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances induced by radio-frequency fields (IEC 61000-4-6: 2006, IDT) GB/T 17626.11-2008, Electromagnetic compatibility - Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests (IEC 61000-4-11: 2004, IDT) GB/T 18479-2001, Terrestrial photovoltaic (PV) power generating systems - General and guide (idt IEC 61277:1995) GB/T 20514-2006, Photovoltaic systems - Power conditioners - Procedure for measuring efficiency (IEC 61683:1999, IDT) The output power rating of the single-phase inverter is preferably selected from the following values, in kilowatts (kW): 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8. 4.2.2 Three-phase inverter The output power rating of the three-phase inverter is preferably selected from the following values, in kilowatts (kW): 10, 20, 30, 50, 100, 250, 500, 1 000. 5 Conditions of use 5.1 Environmental conditions for normal use The environmental conditions for the normal use of the inverter are specified as follows: a) operating environment temperature: -10 °C ~ +40 °C for indoor type, -25 °C ~ +60 °C for outdoor type (no direct sunlight); relative humidity not more than 95%, no condensation. b) altitude not greater than 1 000 m; when the altitude is greater than 1 000 m, it shall be derated according to the provisions of GB/T 3859.2-2013. c) no severe shock and impact; vertical inclination not greater than 5°. d) no corrosive and explosive particles and gases shall be contained in the air. 5.2 Grid conditions for normal use Unless otherwise specified, inverters conforming to this Standard shall be able to operate in a normal manner under the following grid conditions: a) The harmonic voltage in public power grid shall not exceed the limit specified in Chapter 4 of GB/T 14549-1993, that is, the total harmonic distortion rate of the voltage shall not exceed 5%, the odd-order harmonic voltage content rate shall not exceed 4%, and the even-order harmonic voltage content rate shall not exceed 2%. b) The three-phase voltage unbalance shall not exceed the value specified in GB/T 15543-2008; the allowable value shall be 2%, and shall not exceed 4% for a short time. c) The allowable deviation of the single-phase voltage is +10% and -15% of the rated voltage; the allowable deviation of the three-phase voltage is ±10% of the rated voltage. If it exceeds this range, the user shall negotiate with the manufacturer. Grid rated voltage: 380 V for three-phase, 220 V for single-phase. d) The allowable range of frequency is 47 Hz ~ 51.5 Hz, and the rated frequency of the grid is 50 Hz. 5.3 Special conditions of use If the inverter is used under conditions different from those stipulated in 5.1 and 5.2, the user shall propose it when ordering and obtain an agreement with the manufacturer or supplier. 6 Technical requirements 6.1 Body and structure quality The body and structure of the inverter shall meet the following requirements: a) The components related to rack assembly shall meet their respective technical requirements; b) Paint electroplating shall be firm and smooth, without peeling, rust and cracks; c) The rack panel shall be flat, and the text and symbols shall be clear, neat, standardized and correct; d) Plates, marking and signs shall be complete and clear; e) Various switches shall be easy-to-operate, flexible and reliable. 6.2 Performance indicators 6.2.1 Inverter efficiency The maximum efficiency of the inverter without transformer shall not be lower than 95%, and the maximum efficiency of the inverter with transformer shall not be lower than 94%. 6.2.2 Grid-connected current harmonics During grid-connected operation, the inverter shall not cause excessive distortion of the grid voltage waveform and inject excessive harmonic current into the grid, so as to ensure that other equipment connected to the grid will not be adversely affected. The limit value of the total current harmonic distortion rate is 5%; the limit value of odd- order harmonic current content rate is shown in Table 1, and the limit value of even- order harmonic current content rate is shown in Table 2. When the DC side voltage of the inverter is lower than the allowable op.......
Source: https://www.ChineseStandard.net/PDF.aspx/GBT30427-2013