-1.#IO error value when running battery storage in E+

energyplus
idf-editor
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Has anyone encountered the -1.#J or -1.#IO error value when running EnergyPlus?

I made a building model with rooftop PV in OpenStudio, and am now using the IDF editor to add on-site battery storage using the Electric Load Center Distribution manager. I have added the following items to the ElectricLoadCenter:Distribution object: (1) ElectricLoadCenter:Generators (containing the list of my PV generators), (2) ElectricLoadCenter:Storage:Battery, (3) ElectricLoadCenter:Transformer, (4) ElectricLoadCenter:Inverter. The electric buss type for the load center distribution manager is DirectCurrentWithInverterDCStorage.

The model runs without any error messages, but the Electric Loads Satisfied table in the results page lists -1.#IO as the value for Power conversion, total on-site electric sources, and electricity coming from utility. I'm not quite sure how to interpret this, and it's hard to de-bug without any error messages to work from.

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kmpiscopo

asked 2017-05-11 13:22:19 -0500

4.4k

__AmirRoth__

updated 2017-06-04 10:21:43 -0500

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HI @kmpiscopo

I ran into this error when I was working with ChillerHeater:Absorption:DirectFired component in Energyplus. Refer to this question of mine. I realized that this was caused by autosizing the flowrates in chillerHeater:Absoption:DirectFired component. The html report was showing the correct values when I hardsized the values. I suggest going through the model and looking which of the autosized parameters is causing the error. I was able to figure it out pretty easily when the same issue showed up in my last project by going through all the components that were using electricity in the model.

Hope that helps. Raghu