[Solved] storage not charging if allow diesel-off operation is not active
I am simulating a system wind+diesel+storage. The system works correctly if the option "allow diesel-off operation" is selected in the controller page.
However if I deselect this in order to avoid start-up of the generator, the storage is charged at 100% SOC and is not used anymore during the simulation.
Can someone explain me why and how to deal with this in order to balance the use of diesel generator and storage?
Hey Maurizio, check out the comment I left on your other post.
Select the option "Allow diesel-off operation" if the system can maintain stability without the generator running. This option only has an effect if there is a generator in the system which can sometimes be turned off. Some systems require a generator to maintain bus voltage and frequency. If the system includes a "grid-forming" component other than the generator, you can deselect this option, and HOMER will turn the generator off if the load can be supplied with other sources.
If you uncheck the "Allow diesel-off operation", the generator will not be turned off. Also if you have selected "Parallel with AC generator" on the Converter page, it is always going to be in sync with the generator, thus keeping the genset always on. That is why when you choose not to have the diesel-off option, your battery is stays at 100% SOC. If you want to cycle through the battery, then you will have to allow the generator to be off at times, allowing the converter to sync with the battery.
The fuel minimization option does not exist anymore. You can do this by setting a very high fuel price in your Genset and lower component costs, forcing the dispatch to minimize the cost on fuel. You could then sort the results by the fuel usage/ price, allowing you to view results by the minimized fuel option.
Hope this helps!
- Aarabi Madhavan
There is an option called Minimum Run time, in which you can specify the minimum number of minutes a generator has to run if started.
As I explained in my previous reply, if you want the battery to cycle through you will have to check the "allow diesel-off option".
- Aarabi Madhavan