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Powerwall/Solar Edge behavior in power outage
- Thread starter blulegend
- Start date
63Hz sounds intentional where it was purposely selected to trip inverters.
After all, CA Rule 21 allows frequency ride-through up to 62Hz: California Rule 21 Interconnection: What it means for utilities | OPEN
I called Tesla Energy yesterday to follow up, and "Gary" just called me back. Tesla says that they hope to fix the "high frequency" issue in the next firmware release, though they can't say exactly when that will be. Beside the issue of charging from solar during outages, Gary expressed the sentiment that we should be able to use our induction stove during outages, and that's of course frequency dependent. Needless to say, I appreciated hearing this. We also agreed upon the need to be able to charge from solar, during outages, when the ambient temperature is low.
"66 Hz problem" is solved and I can now run off-grid indefinitely (just completed 6 days). Tesla's technician saw that my solar inverters turned off at 60.7 Hz, so he set the cut-off frequency at 61.0 Hz. Worked like a charm. I turned off the grid power today and watched for a couple of hours as the solar inverters cycled off smoothly when the PW2s reach full charge, and turned back on when they dipped below full charge. I did not see any lock-up and the line frequency did not exceed 61 Hz. The A/C ran fine and the UPSs didn't beep. I am delighted.
SSonnentag
埃隆•馬斯克
Get the latest firmware and contact Tesla to fix it (call or web support ticket). I'm encouraged by how easy people have found it to be now.
I called and submitted a web support ticket. It's been three week. I called them again, and they are now scheduling someone to come to my house.
Has anyone had any resolution to this issue other than Phil? I had my Tesla Solar and Powerwalls installed in July and we’ve had our first few PG&E power outages this week. Same issue. Powerwalls were at 100% due to Storm Watch. They depleted down to 67% over a day and a half and when the power went out the solar shut off. The solar only came on occasionally throughout the day for very short bursts and the Powerwalls never got charged back above 80% until the grid power came back on and the solar worked again as normal. This is definitely concerning to me as It’s not unusual for my area to lose grid power for over a week. We really need to have the solar working to keep the batteries topped off during the high solar production hours of the day during a grid outage. I called Tesla and 3 days later I’m still waiting on a call back about it.
During outages early this year, we had no issues with the line frequency being too high for our appliances, as had been the case in my post above, from April 2019. Tesla has definitely made some fixes.
On the other hand, it's been a while since we've had a daytime outage in cold weather where the panels weren't buried by snow. So I have nothing further to report as to our system's ability (or lack thereof) to keep the solar on, in the cold, during outages. Today, SCE was warning of the possibility of a "public safety" outage here, but they never had to turn off our mountain town's power.
On the other hand, it's been a while since we've had a daytime outage in cold weather where the panels weren't buried by snow. So I have nothing further to report as to our system's ability (or lack thereof) to keep the solar on, in the cold, during outages. Today, SCE was warning of the possibility of a "public safety" outage here, but they never had to turn off our mountain town's power.
Thanks for the response. So I assume your fix came in the form of a firmware update then instead of a direct remote fix to your system. Correct?
Keep in mind that the messages in this thread are more than a year old. So any firmware update that might have helped with this issue would also be a year old and would already be superseded by newer firmware that has already been installed on your powerwalls.
What you describe doesn’t sound totally normal, however. It is normal for the solar to turn off if the power fails when the powerwalls are at 100%. And it is normal for the solar to cycle on and off while you are off grid if the powerwall’s SOC is in the high 90s, but the solar should only be off if the powerwalls are at a high state of charge.
It is also possible that the powerwalls may net deplete over a day or several days of outage, depending on how much solar power you get. During an outage your house is the priority for the solar power your system is generating and your powerwalls are only charged with any excess power that your home doesn’t use. So depending on how much power your system is generating there might not be enough power to fully charge your powerwalls during the day, and then they will obviously deplete further at night when there is no solar power.
However, if you are seeing your solar shut off during the day when the powerwalls are at less than a 95% charge then something isn’t right and it probably makes sense for tesla to look at your system. If you post the graphs from your Tesla app during this time period that might help us to see what was happening.
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