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Reint last won the day on May 7

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  1. Hi, I have designed a PV system with PVSol. For our customer, I would like to export the generated energy for every 15 minutes. Is it correct that this is not possible? Since I can only export the hourly and minute values.
  2. Hi Frederik, Thanks for your response. So there is no further information on which type of heat pump the data is based on? Furthermore, we discovered some discrepancies and odd patterns in the data. If we add up all the hour values of the heat pump's consumption, it is 19457,3 kWh, while the total yearly consumption is only 3441 kWh. If we add up every 24 hours and plot these daily values, we also see something strange. There is a huge difference between some days in in January, for example (first image). If we zoom in to the first week of January, we see an odd pattern (second image). During some hours, there is almost no consumption, while suddenly there is a peak of 10 (or more) kWh at 10:00, 19:00, and sometimes at 15:00. During the winter, we would expect a more flat pattern on average.
  3. In addition, I was wondering what type of heat pump it is. How many Watts, how large is the water buffer and how large is the storage capacity (if it has one)?
  4. Hi! I'm running some simulations with Heat Pump consumer profiles. I was wondering where you got the data from. In the "Appliances" tab, it is mention that the consumer profiles are "measured values". From what year and what region are these measured value?
  5. Hi Martin, I the meantime, I have already solved my first question about preparing the Excel file by applying the formula to all cells. The second question - regarding how to obtain a graphic with the height of the sun - remains still relevant to me. Thanks in advance!
  6. Hi Martin, Thank you very much for all the effort! The new energy balance with the imported data shifted by 45 min makes much more sense (check the attached file)! I have two additional questions: - I'm not the biggest Excel expert. Did you have to calcalute all (8760*4=) 35040 cells "by hand" in Excel, or is there some automatic function to copy the same formula to every cell? - How can I obtain the graphic with the height of the sun and the irradiance on a certain day in PVSol?
  7. Hi Martin, There you go! Maastricht 2007-2016.txt Maastricht 2007-2016.csv
  8. Hi, I tried to find a similar topic but I couldn't find one, so here's a new one. I imported climate data from PVGIS for a location in the Netherlands between 2007 and 2016. Then, I compared the same project with both this imported climate data and the Meteonorm data between 1991 and 2010. When I compare the results, the annual sum of global irradiation is significantly lower for the Meteonorm climate data, however, the amount of generated energy is significantly higher. This seems very odd to me. I suspect something is not going right with PVSol's calculation for the irradiance on a tilted surface with the imported climate data. When I compared the two energy balances I saw a large difference between the increases of radiation due to the orientation and inclination of the module surface in both balances. For the case with the imported climate data (2007-2016), the radiation increases with only 0,47% due to the orientation and inclination, while it increases with 8,88% for the case with the Meteonorm data. I can't find out why this difference is so large, since it is exactly the same system. The changing ratio between direct and diffuse radiation over time might affect this percentage I guess, but not in this amount. What do you think? PS. The first three images are from the system with imported climate data, the other three are with older Meteonorm climate data. PPS. The system has an inclination of 37 degrees and an orientation of 209 degrees.
  9. Hi Martin, The CSV file that I try to convert to the right *.dat file format contains more data then required. If I would like to prepare the file, do I have to change all 8760 rows by hand?
  10. Hi! I tried to import the CSV file from PVGIS but it doesn't work. MeteoSyn only accepts DWD, Meteonorm or WBV files... Do you have a solution?
  11. Hi! The climate data that PVSol allocates to most locations in the Netherlands is quite outdated (1990-2010). However, the radiation has significantly increased last years. Therefore, the estimated yield could be underestimated by PVSol. Would it be possible to use more recent climate data that also incorporates the last 10 years, for example with a range from 1990 untill 2020? And, if possible, would you recommend to do this?
  12. I have compared the energy balances of both systems, but there are some things I can't explain. For example losses due to module-indepent shading, which are higher for the SolarEdge configuration, while this should be indepent of the configuration, right? Also I find 1,66% losses due to the optimizers quite high. The first energy balance is from the SolarEdge configuration, the second one from Huawei.
  13. Hi! I have configured the same system with both SolarEdge (including optimizers) and Huawei inverters to make a comparison. It is a system with quite some losses due to shade, therefore, I expected quite a better performance of the SolarEdge configuration. However, the results are pretty close according to PV Sol: SolarEdge + optimizers: - Yield: 813,47 kWh/kWp - Performance ratio: 81,0% Huawei: - Yield: 808,43 kWh/kWp - Performance ratio: 80,1% Does PV overestimate the performance of Huawei, or does PVSol underestimate the performance of the SolarEdge optimizers? Or could this be an accurate simulation?
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