Plant Page Related Concerns
1. Why is the total yield greater than the sum of the monthly yields in the plant page?
Analysis:
1. There may be inverters under the plant that have been generating power for a while before registering on SolisCloud and have accumulated some historical power generation, resulting in inconsistency between the total generation uploaded by the device and the total monthly generation. So the yield seems inconsistent under the plant page.
2. Possibly, the total yield on the inverter has been calibrated on the Solis Cloud platform before. The total yield of the device will be updated before the plant overview page, which will create a conflict.
3. The inverter under the plant is abnormally offline, or the device is removed and replaced, while there is still garbage data on the platform. In this case, just contact the customer to delete the abnormal offline devices. Note that we cannot support batch delete function currently.
Solution:
1. Check the inverter under the plant, and check the yield on the first day of the inverter's generation record on the SolisCloud platform and the total yield.
2. If the total yield of the first day is not 0, then the inverter has already generated yield before the grid connection.
3. Inform SolisCloud online O&M staff to process the data based on customer’s requirements.
2. Why does the daily yield on the plant and device pages not match?
Analysis:
1. Maybe you have replaced the HMI, resulting in inconsistency between the power generation of the day on the device and the historical data on the plant.
2. Sometimes if the device time is incorrect and it is not calibrated, it’s likely to cause the power curve to fall back to 0 at the incorrect time( maybe halfway through the day), which will also cause the total yield under the daily/monthly chart to be incorrect, but it will not affect the total yield of the device.
3. If none of the above is the case, then contact Solis Cloud O&M for further analysis.
Solutions:
1. For case 1, you can have 2 choices:
(1). Empty the inverter’s historical generation on the platform.
(2). Unplug the logger first and calibrate the power generation on the new HMI to be the same as the old HMI.
2. For case 2, you need to check the device time and calibrate it.
3. Why monthly exported reading is less than actual?
Analysis: Maybe there are any inverters or EPM changed or deleted before, and the new machine has not working for a whole month, which lead to a small or even negative value according to platform algorithm. The operation records are included in the plant operation log, so you can check the details in the plant overview.
Solutions: Confirm how you would like to change the monthly reading in plant overview, and contact SolisCloud O&M to modify.
4. Why is the historical generation visible on the inverter page, but not under the plant overview page?
Analysis: The logger will preserve the historical data if it loses network connection. Only the data after the plant is created will be shown but not the historical data. For example, if the device has connected to the logger and the plant is created after a certain period, or if a new plant is created after deleting the old one, then such a problem will occur.
Solution: If there is local data reserved in the collector when the device is offline, the device power curve can be automatically fulfilled, with an underline under the online status of the device. But completing the historical data in the plant page is not supported yet.
5. Why is the power generation curve displayed under the device all normal, but there are many breakpoints in the power curve graph on the plant overview?
Analysis:
The data uploaded by the logger can be classified into real-time data and historical data. That is, if there is a bad signal and the logger cannot upload data in real time, it will store the data locally and then upload it to the platform when the network is back to normal in the next day. The power graph under the plant page will only show real-time data, while the device curve will show real-time and history data at the same time. If the logger signal is too poor and it is online only for part of the day, then you may check whether the logger signal is normal.
Solution:
- Generally speaking, the platform will automatically make up the historical data within two days and make up the power curve graph.
- If more than two days still have not been made up, it should be caused by too many such cases occurring at the same time and the system cannot make up in time, if this happens, please contact the platform O&M to make up manually.
- If it is a signal problem, you can see if you can improve the signal condition or replace the 4G logger.
6. Why does the imported/exported energy of the plant keep being 0?
Analysis:
- There may be errors in the data uploaded by the device itself. Check the imported/exported energy curve of the plant to see if there is any abnormality. The power consumption on the plant page is derived from the data of the device, so the priority is to check the power consumption curve on the device interface.
- Maybe the site is connected to EPM, but the EPM is offline.
Solutions:
- Confirm that the platform data is wrong, then contact the platform operation and maintenance to modify the data.
- Delete the offline EPM and let the logger upload the data once immediately. Refresh and then check again should be able to return to normal.
7. Why does self-use and self-sufficiency value show mismatch even though the grid connected as Entire Energy to Grid?
Analysis:
- The inverter time is incorrect, so it takes incorrect data to display in the plant page. You just correct the device time and then contact Soilis Cloud O&M to modify the data.
- There may be some wrong data uploaded by EPM. The platform will take the imported energy, exported energy and load consumption in the EPM for the specific plant.
8. Why is there explosion self-sufficiency value displayed in yearly view?
Analysis: You can check the inverter page, the inverter control for battery may go wrong. The total consumption suddenly surge on one day in the past.
9. Why does the total daily full load hours on the plant page not add up to the daily full load hours?
Analysis: You can confirm if the meter has been changed, if so, the monthly generation, total yield, and total earning all need to be calibrated.
Solution: Calibrate the data mentioned above in the plant page.
10. Why it shows incredible daily full load hours?
Analysis: Today full load hours in the plant is calculated by daily generation capacity divided by installed capacity. So you can check the generation and installed capacity separately. Possibly, the installed capacity is set too small or the generation is abnormally high. You can check how many inverters there are under the plant, and the generation of the plant should be the sum of all of them. So we can go into the details of each device one by one to check. For example, one of the inverters had an anomaly on the day of May 24th. The actual power generation on that day was 901KWh, but the power generation of the inverter on that day was recorded as 7.382MWh, resulting in a particularly high generation on that day.
Solution: Calibrate the yield of that particular day, so does the month data accordingly.
11. Why is the yearly yield is larger than the total yield?
Analysis: Maybe the customer changed the HMI and forgot to change the reading. So you need to correct the HMI reading.
12. Why is PV yield/power not shown even it’s exporting energy?
Analysis: If it is an AC coupled inverter, then it does not support show today yield yet.
13. Why is the today consumption different in plant and device page separately?
Analysis: In the inverter page, the consumption is calculated by the difference of total consumption energy, which is an integer and directly taken from the inverter. But in the plant page, it's calculated by pv yield+ energy from grid - energy to grid+battery discharging-battery charging. So these 2 values are of different precision.