developer_mh

Hello photovoltaique83, I am afraid I can't gice you an update for the implementation of virtual storage in PV*SOL. We have it on our list, and we are evaluating the different kinds of virtual storage tariffs in various PV markets, but I am not able to give you a schedule right now. Kind regards, Martin

Hallo Lis, ja, das geht. Auf der Seite "Anlagenart, Klima und Netz", im Abschnitt Netz lässt sich die Einspeiseabregelung einstellen. Beste Grüße, Martin

Hello Ryan, sorry for the late answer, and thanks for the csv file. As James correctly pointed out, you'll have to set the "Units" to kWh (or Wh - depending on the data you have) and the "Number format" to "####.##" (i.e. a point and no comma), otherwise you will get incorrect values. It should also be noted that you are trying to import a leap year. We filter out the leap day, which is why the year's total is a little lower than the total in your Excel file. Hope that helps, kind regards, Martin

Hi Bas, in order to be able to identify what is going on it would be helpful if you could provide the project file. You can send it by private message to me here in the forum. The instantaneous output of PV systems with varying orientation is depending strongly on the diffuse fraction of the solar irradiance and the sun position. The diffuse fraction changes from time step to time step, so does the distribution of the diffuse irradiance over the sky dome. And of course, if there is direct irradiance, it gets more complicated. So without these data it is impossible to understand why a given PV systems performs differently than another at a given point in time. Kind regards, Martin

Hallo Cons, mit welcher Version von PV*SOL arbeitest du denn? Die Empfehlung von 4.8kWh Batteriekapazität pro kWp PV-Leistung erscheint seit einiger Zeit nur mehr als Hinweis, nicht als Fehler. Simulieren geht trotzdem. Beste Grüße, Martin

Hi Infinitech, thanks for reporting this, I will forward it to our database team (database@valentin-software.com). If you want, you can also report to them directly in the future. Kind regards, Martin

Hallo Lis, die Wärmepumpenprofile wurden mit GeoT*SOL https://valentin-software.com/en/products/geotsol/ simuliert. Es handelt sich dabei mehr oder weniger um Beispielprofile, da es nicht möglich ist, einen bestimmten Anwendungsfall festzulegen. In PV*SOL ab Version 2021 kann man aber auch eine Luftwärmepumpe im neuen Anlagentyp Thermische Anlage simulieren. Dabei werden die Klimadaten des aktuellen Standorts verwendet. Das Lastprofil "Wohnkomplex" geht auf eine Forschungsarbeit aus der Schweiz zurück ("Warmwasserversorgungen heute; AT Verlag Aarau (Schweiz) 1984"). Von der Verwendung in wissenschaftlichen Arbeiten würden wir von diesem Profil abraten und eher auf die Lastprofile im oberen Bereich (aus Messwerten) verweisen. Beste Grüße, Martin

Hi Ryan, it is hard to say what makes your system crash with a 2 MW system if the 3 MW was no problem. Could you provide the project file, please? You can send it here via private message in the forum. Kind regards, Martin

Hello J. Holovsky, the approach that you followed is the right one to achieve the result that you intend. What do you mean by "PV*SOL is not respecting the arrays"? Here is a quick how to. Let's say you have a module area and a chimney in the middle. You want to connect the 8 modules around the chimney to a different inverter than the other modules. Go to the tab "Module configuration" Select the 8 modules with the mouse Right click on "Add to 'Define Module Areas' Dialog" Go to "Define Module Areas" dialog, you'll see the 8 modules there already Click "Import all unconfigured" on the upper left to import the remaining modules Then click "Configure" at the bottom. You can now configure the 8 modules independently Hope that helps. If you have any other question, please don't hesitate to ask. Kind regards, Martin

Dear Anthony, the degradation calculation is not directly part of the energy simulation in PV*SOL, but rather part of the economic calculations. So, in the energy balance you see the values without degradation of the module. In the diagram "Energy over observation period" you see the annual PV energy, reduced by the degradation. These figures serve as input for the economic calculations. We calculate the degradation on a monthly basis, so depending on the installation date of your system, it might happen that even in the first year there is a notable degradation, i.e you'll see a difference between the un-degraded energy balance and the first column of the degradation diagram. You can copy all tables and diagrams by selecting and right-clicking them. Hope that helps, kind regards, Martin

Hallo Ralf, eine Möglichkeit wäre, das Batteriesystem zu kopieren und dann bei den Ladestrategie-Parametern den minimalen SOC hochzustellen: Zu der Sortierung der Batteriesysteme: Momentan werden sie standardmäßig nach ihrer Nennleistung sortiert, so wie z.B. die PV-Wechselrichter auch. Man kann aber auch zur großen Übersicht gehen, und dort nach anderen Größen sortieren, sowie suchen und filtern. Dadurch kommt man gerade bei vielen Batteriesystemen wahrscheinlich schneller zum Ziel: Viele Grüße, Martin

Hello Ryan, would it be possible to send me the file that you imported? You can send it to me by private message here in the forum, thank you. Kind regards, Martin

Hi Sondre207, in general, the position of a building over ground is not important for the shading simulation and will not affect the results. Only if you have other objects that surround the house (or the PV system) it is important to have all set to the correct height and z-position (vertically). Kind regards, Martin

Hi Huseyin, yes, this is possible. You'll have to create a *.dat file from your measured values (global irradiance, ambient temperature, relative humdity and wind speed), following the format description here: https://help.valentin-software.com/pvsol/2021/en/pages/system-type-climate-and-grid/meteosyn/#options Hope that helps, kind regards, Martin

Hi Lukáš, in your case you are analysing a project with net metering economy calculation. Net metering tariffs work like that: At the end of the tariff period (usually a month), you check the balance between grid feed-in and consumption from the grid. For every kWh that you consume more than you feed in, you have to pay the price stated in the tariff. If you produce more than you consume, you don't have to pay. Because of this mechanism, battery system are rarely able to produce a positive effect on the economy of net metering projects. Compare these diagrams from your projects: Without battery you are feeding in 5683 kWh and taking 7455 kWh. Balance is 1772 kWh. With battery you are feeding in less, 3014 kWh, but you are also taking less, 5325 kWh. Balance is 2331 kWh. So, in the latter case, your balance is worse from an economical point of view, mostly because of the losses in the battery. Hope that answers your question, kind regards, Martin

Hi Alberto, we are aware of the issue, but right now it is not possible to change the simulation year. What you would have to do is the following: 2019 started with a Tuesday, 2014 started with a Wednesday If you import a load profile from 2019, its first day with measurement data is referring to a Tuesday, but you need a Wednesday. So you have to cut the first day of data from the load profile before importing Append this cut out data to the end of the file to fill the year (2014 ends with a Wednesday, 2019 with a Tuesday, so you need one day more at the end - the day you removed from the beginning) Hope that helps, kind regards, Martin

Hi Reint, this is correct, the only two options are hourly and one-minute values. Kind regards, Martin

Dear dom bez kostów, I used deepl.com to translate your question into English: Unfortunately, I am not sure what the question is. The translation might be misleading. You can view, edit, save and export the circuit diagram, enter all the electrical devices you want, dimension the cables and so on, no problem. You can do so on the plan and the cabling pages: If this doesn't answer you question, please don't hesitate to ask again. Kind regards, Martin

Dear Martynas, after the simulation, you can check the energy balance of the system. You can find it on the results page, here: There are all kinds of losses that occur in a PV system, from the irradiance coming in to the AC energy leaving the inverter and everything in between. There are also temperature related losses (for the PV module), but the temperature derating of the inverter is not accounted for. Hope that helps, kind regards, Martin

Hi Lukas, could you provide a project file for us, please? This would make it easier to answer the question. You can send it by private message to me, here in the forum, thank you. Kind regards, Martin

Hi GIM, I think the beast way in your case would be to model the 3D building in an external 3D modelling software like sketchup and then import it in your PV*SOL projects. Unfortunately it is not possible right now to export 3D models from PV*SOL and then re-import them. Hope that helps, kind regards, Martin

Hi Jorge, as GIM pointed out, you'll need to enter the correct decimal separator. Usually the decimal separator that is valid in PV*SOL is the same as in your Windows settings. In my case here it is a point, but in other cases it might be a comma. Hope that helps, kind regards, Martin

Hi yrnaknt, this just means that you have to select a system in the tree view first, before being able to have the cablig done automatically: Select a system and then click "Cable automatically", then it will work. Hope that helps, kind regards, Martin

Hallo Sven, diese Frage hat schon in der Vergangenheit immer wieder die Gemüter erhitzt. Der betreffende Passus lautet im EEG so: Mittlerweile hat sich die Auffassung durchgesetzt, dass es sich dabei um die AC-Nennleistung der Wechselrichter handelt. Technisch gesehen macht das natürlich auch am ehesten Sinn. Ganz interessant ist folgender Artikel: https://www.sfv.de/artikel/ac_statt_dc_-_wegfall_einer_bremse_fuer_die_photovoltaik_im_eeg_2014 Viele Grüße, Martin

Hallo C. Drexel, der Pfad deutet darauf hin, dass es sich um die Startmenü-Verknüpfung handelt, die wohl verschwunden ist. Das installierte Programm sollte hier zu finden sein, wenn im Installationsprozess kein anderer Pfad angegeben wurde: C:\Program Files (x86)\Valentin EnergieSoftware\PVSOL premium 2021 R3\PVSOLpremium.exe Oder im Fall von PV*SOL 2021 R3 (nicht premium): C:\Program Files (x86)\Valentin EnergieSoftware\PVSOL 2021\PVSOL.exe Wenn die exe-Datei dort nicht mehr zu finden ist, würde ich empfehlen, das Programm einfach erneut zu installieren. Wenn die exe vorhannden ist, kann man einen Rechtsklick darauf machen und "Zu Start hinzufügen" wählen, damit erscheint das Programm dann wieder im Startmenü. Viele Grüße und viel Erfolg, Martin