Quality standards and specifications for GCRT PV
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The document discusses quality standards and specifications for grid-connected rooftop solar PV power plants. It outlines mandatory and advisory quality standards for various components of solar PV systems including solar panels, inverters, fuses, surge arrestors, cables, junction boxes, energy meters, mounting structures, and testing facilities. It emphasizes the importance of meeting standards for safety, performance, and reliability of components. Specific standards are identified for materials, testing procedures, efficiency, and environmental stress. Guidelines are also provided for best practices in installation and maintenance.
Quality standards and specifications for GCRT PV
- 1. “Quality Standards & Specifications for Grid-connected Rooftop Solar PV Power Plants” Friday, 17th Feb. 2017 Capacity Building Programme for SBI Officials State Bank Staff College , Hyderabad Abhinav Jain, RA E&F Division, TERI DS Block, IHC
- 2. Quality Standards for Solar PV Panels; Quality Standards for Solar Inverters; Quality Standards for Protective Devices; Quality Standards for Cables; Quality Standards for Other Components; Sample Test Certificates, and Guidelines for Best Practices.
- 4. Solar PV Modules/Panels Mandatory Advisory IEC 61215/ IS 14286 Design Qualification and Type Approval for Crystalline Silicon Terrestrial Photovoltaic (PV) Modules Yes - IEC 61646/ IS 16077 Design Qualification and Type Approval for Thin-Film Terrestrial Photovoltaic (PV) Modules Yes - IEC 62108 Design Qualification and Type Approval for Concentrator Photovoltaic (CPV) Modules and Assemblies Yes - IEC 61701- As applicable Salt Mist Corrosion Testing of Photovoltaic (PV) Modules Yes - IEC 61853- Part 1/ IS 16170 : Part 1 Photovoltaic (PV) module performance testing and energy rating –: Irradiance and temperature performance measurements, and power rating Yes - IEC 62716 Photovoltaic (PV) Modules – Ammonia (NH3) Corrosion Testing Yes (As per the site condition like dairies, toilets) IEC 61730-1,2 Photovoltaic (PV) Module Safety Qualification – Part 1: Requirements for Construction, Part 2: Requirements for Testing Yes - IEC 62804 (Draft Specifications/TS) Photovoltaic (PV) modules - Test methods for the detection of potential-induced degradation. IEC TS 62804-1: Part 1: Crystalline silicon Yes (PID-resistant modules – system voltage is more than 600 VDC) Yes (PID-resistant modules – system voltage is less than 600 VDC ) IEC 62759-1 Photovoltaic (PV) modules – Transportation testing, Part 1: Transportation and shipping of module package units Yes -
- 9. Grid-Tie Solar PV String Inverters/PCUs/ Micro-Inverters Mandatory Advisory IEC 62109-1, IEC 62109-2 Safety of power converters for use in photovoltaic power systems - Part 1: General requirements, and Safety of power converters for use in photovoltaic power systems - Part 2: Particular requirements for inverters. Safety compliance (Protection degree IP 65 for outdoor mounting, IP 54 for indoor mounting) yes - IEC/IS 61683 Photovoltaic Systems – Power conditioners: Procedure for Measuring Efficiency (10%, 25%, 50%, 75% & 90-100% Loading Conditions) Yes - BS EN 50530 (Will become IEC 62891) Overall efficiency of grid-connected photovoltaic inverters: This European Standard provides a procedure for the measurement of the accuracy of the maximum power point tracking (MPPT) of inverters, which are used in grid-connected photovoltaic systems. In that case the inverter energizes a low voltage grid of stable AC voltage and constant frequency. Both the static and dynamic MPPT efficiency is considered. Yes - IEC 62116 or, IEEE 1547 Utility-interconnected Photovoltaic Inverters - Test Procedure of Islanding Prevention Measures Yes -
- 10. IEC 60068-2 (1, 2, 14, 30 & 64) Environmental Testing of PV System – Power Conditioners and Inverters a) IEC 60068-2-1: Environmental testing - Part 2-1: Tests - Test A: Cold b) IEC 60068-2-2: Environmental testing - Part 2-2: Tests - Test B: Dry heat c) IEC 60068-2-14: Environmental testing - Part 2-14: Tests - Test N: Change of temperature d) IEC 60068-2-30: Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) e) IEC 60068-2-64: Environmental testing - Part 2-64: Tests - Test Fh: Vibration, broadband random and guidance Yes - IEC 61000- Part 2, 3 & 6 Electromagnetic Interference (EMI), and Electromagnetic Compatibility (EMC) testing of PV Inverters (as applicable) Yes - Grid-Tie Solar PV String Inverters/PCUs/ Micro-Inverters Mandatory Advisory
- 14. Fuses Mandatory Advisory IS/IEC 60947 (Part 1, 2 & 3), EN 50521 General safety requirements for connectors, switches, circuit breakers (AC/DC): a) Low-voltage Switchgear and Control-gear, Part 1: General rules b) Low-Voltage Switchgear and Control-gear, Part 2: Circuit Breakers c) Low-voltage switchgear and Control-gear, Part 3: Switches, disconnectors, switch- disconnectors and fuse-combination units d) EN 50521: Connectors for photovoltaic systems – Safety requirements and tests Yes - IEC 60269-6 Low-voltage fuses - Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic energy systems Yes - Surge Arrestors IEC 61643-11:2011 / IS 15086-5 (SPD) Low-voltage surge protective devices - Part 11: Surge protective devices connected to low-voltage power systems - Requirements and test methods Yes -
- 15. Cables Mandatory Advisory IEC 60227/IS 694, IEC 60502/IS 1554 (Part 1 & 2) General test and measuring method for PVC (Polyvinyl chloride) insulated cables (for working voltages up to and including 1100 V, and UV resistant for outdoor installation) Yes - BS EN 50618 Electric cables for photovoltaic systems (BT(DE/NOT)258), mainly for DC cables Yes - Lightning Protection System Components IEC 62561 Series (Chemical earthing) IEC 62561-1 Lightning protection system components (LPSC) - Part 1: Requirements for connection components IEC 62561-2 Lightning protection system components (LPSC) - Part 2: Requirements for conductors and earth electrodes IEC 62561-7 Lightning protection system components (LPSC) - Part 7: Requirements for earthing enhancing compounds Yes -
- 16. Junction Boxes Mandatory Advisory IEC 60529 Junction boxes and solar panel terminal boxes shall be of the thermo plastic type with IP 65 protection for outdoor use, and IP 54 protection for indoor use Yes - Energy Meter IS 16444 or, as specified by the DISCOMs/CEA Metering Regulations a.c. Static direct connected watt-hour Smart Meter Class 1 and 2 — Specification (with Import & Export/Net energy measurements) Yes - Solar PV Roof Mounting Structure IS 2062/IS 4759 Material for the structure mounting -
- 17. Solar PV Roof Mounting Structure: Aluminium frames will be avoided for installations in coastal areas. Solar Panels: Plants installed in high dust geographies like Rajasthan and Gujarat must have the solar panels tested with relevant dust standards (Applicable standard would be IEC 60068-2-68). Fuse: The fuse shall have DIN rail mountable fuse holders and shall be housed in thermoplastic IP 65 enclosures with transparent covers. Cables: For the DC cabling, XLPE or, XLPO insulated and sheathed, UV-stabilized single core flexible copper cables shall be used; Multi- core cables shall not be used. For the AC cabling, PVC or, XLPE insulated and PVC sheathed single or, multi-core flexible copper cables shall be used; Outdoor AC cables shall have a UV-stabilized outer sheath. The total voltage drop on the cable segments from the solar PV modules to the solar grid inverter shall not exceed 2.0% The total voltage drop on the cable segments from the solar grid inverter to the building distribution board shall not exceed 2.0% The DC cables from the SPV module array shall run through a UV-stabilized PVC conduit pipe of adequate diameter with a minimum wall thickness of 1.5mm. Cables and wires used for the interconnection of solar PV modules shall be provided with solar PV connectors (MC4) and couplers. All cables and conduit pipes shall be clamped to the rooftop, walls and ceilings with thermo-plastic clamps at intervals not exceeding 50 cm; the minimum DC cable size shall be 4.0 mm2 copper; the minimum AC cable size shall be 4.0 mm2 copper. In three phase systems, the size of the neutral wire size shall be equal to the size of the phase wires. Earthing: Separate earthing would be required for solar mounting structure, inverters and lighting arrester. However, double earthing bus is further recommended for higher safety.
- 20. Supported By: The Norwegian Framework Agreement (NFA) between the Norwegian Ministry of Foreign Affairs (MFA) and The Energy and Resources Institute (TERI).
- 21. PV Test-bed for Testing Ten (10) Solar PV Modules Simultaneously Sun Simulator Field Testing of different Solar PV Technology Solar Lighting Laboratory Load Emulator PV Array Simulator Grid Simulator Smart Controller Laboratory TERI-SCLab Video, Part 1 TERI-SCLab Video, Part 2
- 22. Annual O&M costs should not vary substantially from ~ 2% of capital cost in the first year, with annual O&M cost escalation rate not varying substantially from 5.72%. Capital cost break-up should not vary substantially from that given in the table below: Source: IDBI is lending loan for GCRT to the Households, upto INR 3 Lacs as term-loan (through EMI) with no collateral security.
- 23. Thank You Abhinav Jain, Research Associate Abhinav.jain@teri.res.in 8882828606