@Jaidmaster can you share the full 60 profile? I'm specifically interested in the Over Frequency Limits, fast/slow, the frequency, and timings. I've applied the 83 profile and it's set to 65.0hz @ 160ms (fast) and 61.8hz @ 1000ms (slow). Since my Powerwall is configured to max out at 62hz the fast will never trigger and slow may be too slow if the PV is kicking out max and the Powerwall is totally full. I'm thinking I may need to update fast to be 61.8hz as well (or update slow to 160ms).
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@Jaidmaster can you share the full 60 profile? I'm specifically interested in the Over Frequency Limits, fast/slow, the frequency, and timings. I've applied the 83 profile and it's set to 65.0hz @ 160ms (fast) and 61.8hz @ 1000ms (slow). Since my Powerwall is configured to max out at 62hz the fast will never trigger and slow may be too slow if the PV is kicking out max and the Powerwall is totally full. I'm thinking I may need to update fast to be 61.8hz as well (or update slow to 160ms).
Yes, I will have to apply the profile to my micros to be able to view it - not sure why that is, but it seems like it should be safe. I will do it this evening when generation is low.
I had the same concern about never being able to do a fast shutdown of the inverters if the PW max frequency is lowered but I don't know enough about it to know if it could be a real problem or not. Maybe fast shutdown in the microgrid is not needed?
Yes, I will have to apply the profile to my micros to be able to view it - not sure why that is, but it seems like it should be safe. I will do it this evening when generation is low.
I had the same concern about never being able to do a fast shutdown of the inverters if the PW max frequency is lowered but I don't know enough about it to know if it could be a real problem or not. Maybe fast shutdown in the microgrid is not needed?
My "worst case" scenario is full PV production, about 6.4kw for my system 100% SoC and a sudden grid outage. The Powerwall inverter can handle 1 second of 6.4kw (see https://www.tesla.com/sites/default.../Powerwall 2_AC_Datasheet_en_northamerica.pdf - "real power: peak") but if it is at 100% SoC can the battery take the 1.8 watt hour* charge? Seems like it should but I'm no electrical engineer. If the Powerwall notices after 193ms (two 62hz cycles) that the PV flow isn't abating as it expects is there something it'll do like flip a breaker?
(6400 watt seconds / 60 minutes / 60 hours = 1.8 watt hours)
No problem, appreciate the info!
I like the slower production ramp down but looks like over frequency fast is still 65hz and the 0% production level is 61.86hz (60.2 + 1/0.6). I think there is some protection from the ramp down functionality in the scenario I gave earlier but it's unclear how fast that actually responds - if it's slower than over frequency slow then it doesn't offer any protection. Would be safest for sure to turn the over frequency fast down to 61.9hz for my Powerwall configuration of 62hz max.
