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GUI validates against negative energy prices

Miles Evans
Tue, 06 Apr 2021 19:05:20 GMT

The GUI does not currently accept negative energy prices. This validation was meant to prevent concurrently performing size optimization and using negative energy prices (this causes concurrent charge and discharge for storage systems, see https://storagewiki.epri.com/index.php/DER_VET_User_Guide/Model_Details/Mixed_Integer_Optimization for more details). We will update in the future when we can. The workaround is to export the project using the 'export' button on the summary page, open the project.json file this creates, edit the 'data' field of the 'tsDaPrice' input in the file with the correct number of comma-separated energy prices (including negatives!), save the json file, load it back into the GUI using the 'Use Existing Analysis' button on the landing page, and run the analysis. This run should use the negative energy prices you entered into the json file. [DER-VET_GUI_Error04062021](//muut.com/u/der-vet/s3/:der-vet:LtIh:dervet_gui_error04062021.png.jpg)

carloshermana
Wed, 05 May 2021 10:57:06 GMT

How do u introduce the data in the .json file? Because I have been trying to copy paste from the .csv we download from the web but this file doesnt contain commas (,) so the file doesnt really work. Also in the Rowsizes part i guess we have to add 8760 1s and that is messing.

Miles Evans
Mon, 24 May 2021 22:26:55 GMT

You can save excel data as a csv. This csv should have all the values separated by commas, which you can copy/paste into the json. You may have to open the csv in a text editor (not excel) to do this in the easiest way.