Could you please guys tell me how to make CT connections and set of my Deye inverter to achieve the above (if possible at all!). Your help is much appreciated as I don't want to damage my inverter.
For that use case you don't really require CTs I suppose. I imagined myself being in such a situation, and what I'd do is the following.
(I assume that your inverter output power is enough to power all your needs. If it's not the case, then I should rethink the whole setup)
In case of frequent blackouts all of my loads should be connected to the inverter. Because inverter can power just what's connected to it's 'Load' output.
Next, it should be configured to be used in '
Zero export to Load' mode. Ensure that checkbox '
Solar sell' is
unchecked. In this mode it won't push any excess energy to grid. It's not 100% accurate in that, it tried to do it best, but it might sometimes consume or export tiny amounts of energy, like 10-50W. Overall it shouldn't be very noticable.
In 'time of use' screen you can configure the usage pattern according to your description. Ensure that
Time of Use checkbox is '
checked'. Refer to the manual to make a relevant setup for you.
You should check the manual for exact meaning of 'Battery first' vs 'Load first' strategies of using the solar power and choose the option that suit your needs best. In
battery first mode it uses available solar to charge the battery as fast as battery allows it to, while excess solar energy is used to cover Load consumption. If Load consumes more than solar panels can provide - it will take additional energy from the grid.
In
Load first mode it would prioritize Load consumption from the solar, and all the excess solar power is pushed to battery if it can accept it. So it might take battery longer to charge in some scenarios but might reduce buying energy (i.e. increase utilization of solar power). And it increases risk that next blackout will be with undercharged battery. You can try few strategies and pick the one that works best for your specific situation
Hope that helps