Javier Otálora Posted February 2, 2018 Report Share Posted February 2, 2018 Hi PV*Sol Team. We need your help to clarify about meteo, irradiation and atmospheric data bases compatibility of PV*SOL: Is PV*SOL able of importing database files like TMY2/3 Formats (NREL)? What about importing data from SolarGIS or NASA? Are Databases included in PV*Sol Premium? Are there detailed LatinAmerican Data included in PV*Sol Premium? Thanks Javier Quote Link to comment Share on other sites More sharing options...
developer_mh Posted February 5, 2018 Report Share Posted February 5, 2018 Dear Javier, the meteo database that is integrated in PV*SOL is from MeteoNorm (http://www.meteonorm.com/) via MeteoSyn (or own climate data handler). The climate data and the interpolation algorithms come from them, and they mostly rely on GEBA and WMO data (http://www.meteonorm.com/images/uploads/downloads/flyer_meteonorm_7.pdf). As you can see they have included 95 ground stations for Latin America and cover the rest with satellite data. In our software you can also interpolate your own climate data for any location on the world, using the sophisticated interpolation algorithm from MeteoNorm (via our tool MeteoSyn). In PV*Sol you can further import your own data. The supported formats are xlm, dat and wbv. Xlm files are specific to the German Meteorological Service and Wbv is our own format, so they won't help you. But the *.dat format is basically a text file format that you can easily compose yourself from any data source like TMY2, TMY3, NSRDB, EPW, SolarGIS or anything you can think of. You can find more information on how to compose these files here in this thread: Hope that helps! Martin Quote Link to comment Share on other sites More sharing options...
LynetteOC Posted April 23 Report Share Posted April 23 Hi there, I have a followup question regarding the use of EPW hourly data and the simulation of shaded systems. I am aware that the simulations run at 10 minute intervals with regard to shade evaluation, but if the weather data is hourly instantaneous, how does PVSOL evaluate the solar radiation within the hour, or does it assume the solar radiation is constant throughout the hour? Kind regards, Lynette Quote Link to comment Share on other sites More sharing options...
developer_fw Posted April 27 Report Share Posted April 27 Hi LynetteOC, sorry for the belated response. This is correct, the irradiation is assumed to be constant throughout the hour. This again illustrates the importance of simulations with minute values instead of using hourly values. Those minutely data can be synthesized for every location: https://help.valentin-software.com/pvsol/2021/en/calculation/irradiation/synthesis-of-minute-values/ Best regards, Frederik Quote Link to comment Share on other sites More sharing options...
LynetteOC Posted April 28 Report Share Posted April 28 Thanks Frederik, Thanks for the link to the research paper for the method applied to estimate the minute level data. Its an excellent feature for the tool. I have a couple more questions. a) Is the resultant minute solar radiation data (incident or other) available as an output (data file) in PVSOL and b) is the highest time step for shading still 10 minutes. I looked into it over a year ago and I'm wondering if it has been updated. I'm trying to decide whether to invest in PVSOL in a research project on optimal inverter configurations for shading. Kind Regards, Lynette Quote Link to comment Share on other sites More sharing options...
developer_fw Posted April 29 Report Share Posted April 29 Hello Lynette, a) yes, it is! You can export the simulation results to a character separated values file: https://help.valentin-software.com/pvsol/2021/en/pages/presentation/#simulation-results b) Yes, with the current 3D the highest resolution is 10 minutes. We are working on improving that for the new 3D We would be very interested in the results of this research project. This could provide many opportunities for improvement. Best regards, Frederik Quote Link to comment Share on other sites More sharing options...
LynetteOC Posted April 30 Report Share Posted April 30 Thanks Frederik, Just to clarify with regard to exportable results, what fields are included? Indicent solar radiation, module temperature, DC energy AC energy etc. Thanks for your help, Kind Regards, Lynette Quote Link to comment Share on other sites More sharing options...
developer_fw Posted April 30 Report Share Posted April 30 Hi Lynette, this list varies depending on your System type and the configuration you choose (Nr. of inverters e.g.). For system type Grid-connected PV System the values are: Irradiance onto horizontal plane kWh/m² Diffuse Irradiation onto Horizontal Plane kWh/m² Outside Temperature °C Modulfläche 1: Height of Sun rad Modulfläche 1: Irradiance onto tilted surface kWh/m² Modulfläche 1: Module Temperature °C Open Circuit Voltage (MPP 1+2, Inverter 1 (INVERTER NAME AND TYPE)) V MPP Voltage (MPP 1+2, Inverter 1 ((INVERTER NAME AND TYPE))) V Grid Feed-in kWh Energy from Grid kWh Global radiation - horizontal kWh/m² Deviation from standard spectrum kWh/m² Ground Reflection (Albedo) kWh/m² Orientation and inclination of the module surface kWh/m² Shading kWh/m² Reflection on the Module Interface kWh/m² Irradiance on the rear side of the module kWh/m² Global Radiation at the Module kWh/m² Modulfläche 1: Global radiation - horizontal kWh/m² Modulfläche 1: Losses due to Deviation from standard spectrum kWh/m² Modulfläche 1: Losses due to Ground Reflection (Albedo) kWh/m² Modulfläche 1: Yields through Orientation and inclination of the module surface kWh/m² Modulfläche 1: Losses due to Shading kWh/m² Modulfläche 1: Reflection on the Module Interface kWh/m² Modulfläche 1: Irradiance on the rear side of the module kWh/m² Modulfläche 1: Global Radiation at the Module kWh/m² Global PV Radiation kWh Bifaciality kWh Soiling kWh STC Conversion (Rated Efficiency of Module) kWh Rated PV Energy kWh Low-light performance kWh Module-specific Partial Shading kWh Deviation from the nominal module temperature kWh Diodes kWh Mismatch (Manufacturer Information) kWh Mismatch (Configuration/Shading) kWh Power optimizer (DC conversion/down-regulation) kWh PV Energy (DC) without inverter down-regulation kWh Failing to reach the DC start output kWh Down-regulation on account of the MPP Voltage Range kWh Down-regulation on account of the max. DC Current kWh Down-regulation on account of the max. DC Power kWh Down-regulation on account of the max. AC Power/cos phi kWh MPP Matching kWh PV energy (DC) kWh Inverter 1 - MPP 1 - to Modulfläche 1: Global PV Radiation kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Bifaciality kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Soiling kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to STC Conversion (Rated Efficiency of Module) kWh Inverter 1 - MPP 1 - to Modulfläche 1: Rated PV Energy kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Module-specific Partial Shading kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Low-light performance kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Deviation from the nominal module temperature kWh Inverter 1 - MPP 1 - to Modulfläche 1: Diodes kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Mismatch (Manufacturer Information) kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to Mismatch (Configuration/Shading) kWh Power optimizer (DC conversion/down-regulation) * kWh Inverter 1 - MPP 1 - to Modulfläche 1: PV Energy (DC) without inverter down-regulation kWh Inverter 1 - MPP 1 - to Modulfläche 1: Failing to reach the DC start output kWh Inverter 1 - MPP 1 - to Modulfläche 1: Down-regulation on account of the MPP Voltage Range kWh Inverter 1 - MPP 1 - to Modulfläche 1: Down-regulation on account of the max. DC Current kWh Inverter 1 - MPP 1 - to Modulfläche 1: Down-regulation on account of the max. DC Power kWh Inverter 1 - MPP 1 - to Modulfläche 1: Down-regulation on account of the max. AC Power/cos phi kWh Inverter 1 - MPP 1 - to Modulfläche 1: Losses due to MPP Matching kWh Inverter 1 - MPP 1 - to Modulfläche 1: PV energy (DC) kWh Energy at the Inverter Input kWh Input voltage deviates from rated voltage kWh DC/AC Conversion kWh Own Consumption (Standby or Night) kWh Total Cable Losses kWh PV energy (AC) minus standby use kWh Feed-in energy kWh Inverter 1 to Modulfläche 1: Energy at the Inverter Input kWh Inverter 1 to Modulfläche 1: Losses due to Input voltage deviates from rated voltage kWh Inverter 1 to Modulfläche 1: Losses due to DC/AC Conversion kWh Inverter 1 to Modulfläche 1: Own Consumption (Standby or Night) kWh Inverter 1 to Modulfläche 1: Total Cable Losses kWh Inverter 1 to Modulfläche 1: PV energy (AC) minus standby use kWh Inverter 1 to Modulfläche 1: Feed-in energy kWh Best regards, Frederik Quote Link to comment Share on other sites More sharing options...
LynetteOC Posted July 14 Report Share Posted July 14 Thanks for this Frederik. I notice all radiation units include time, kWh/m², hence energy measures and not instantaneous. 1) Is the instantaneous irradiance integrated over the timeframe of choice by direct multiplication by the time interval? On 4/30/2021 at 6:41 PM, developer_fw said: Modulfläche 1: Global Radiation at the Module kWh/m² 2) Looking at for example this output per module face, is it available for one minute intervals if the minute analysis is selected, or is it only available hourly? 3) Is it available per module face or per substring face within module? Kind Regards, Lynette Quote Link to comment Share on other sites More sharing options...
developer_mh Posted July 15 Report Share Posted July 15 Hi Lynette, when we simulate with an one-hour timestep, we can directly interpret the incoming irradiance values (in W/m²) from the climate data as irradiation values (in Wh/m²). When we simulate with one-minute values, you can see the output in the diagram editor or you can export them to csv on the presentation page. Here it is in W/m², when you export, you'll get kWh/m², depending on your export settings. The irradiation is only available on module level. The diffuse shading is applied on the whole module homogeneously while the direct shading affects the cells with varying intensity. But these different irradiation values (on cell or substring level) are not logged at the moment, it would lead to a huge amount of simulation data. Hope that helps, kind regards, Martin Quote Link to comment Share on other sites More sharing options...
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