question

wolfgang Linke avatar image
wolfgang Linke asked

BHKW Start/Stop

For a plant with solar and BHKW I look for a possibility

to switch off the generator immediately if after cloudy sky

very quickly the sun shines full. The generator is normally switched on

at SOC 20% and then runs for at least half an hour or SOC 40%.

In the meantime, when the clouds change and the sun shines full.

I would like to switch off the generator immediately even though the conditions are still

are not fulfilled. The solar system has 7.4 kwp , the generator has 5 Kw

There are 3 Multiplus II 48/3000 in the system. Either Solar or

BHKW be in operation because of the 1:1 rule. The situation arises only

when the weather changes quickly from very cloudy to full sun. And at the same time

very few loads are present. The solar system is connected to AC out



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Generator
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3 Answers
mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·

Hi Wolfgang, what I recommend to do is study this manual:

https://www.victronenergy.com/live/ccgx:generator_start_stop


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wolfgang Linke avatar image
wolfgang Linke answered ·

Thank you very much for your answer.


My CC has Start if bigger than
and I want Generator Stop when greater than.
My PV input will be greater than zero in the yellow CC display.
is displayed, i.e. as a positive value.
Am I making a thinking mistake here?
Or is in case if PV is used as measurement
Start and stop reversed.

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wolfgang Linke avatar image
wolfgang Linke answered ·

Das Problem ist noch nicht gelöst. Ich brauche nur einen Unterbrecher für den Generator zur Unterbrechung bei PV größer 1000W . Wenn ich den Menupunkt Last verwende und gebe als Messgröße PV höchste Phase an bekomme ich unerwünschte Reaktionen von der Verbrauchseite.Z.B. Wenn eine Verbrauchslast größer als PV Eingang ist. Selbst wenn der Akku gut voll ist und der Generator nicht starten müßte.

The problem hasn't been solved yet. I just only need a breaker for the generator to interrupt at PV greater than 1000W. If I use the menu item Load and set the measured value PV to highest phase I get unwanted reactions from the consumption side, e.g. if a consumption load is higher than PV input. Even if the battery is full and the generator doesn't have to start.


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