Smart I-V Curve Diagnosis

The smart I-V curve diagnosis function allows you to check the health status of strings for the inverters connected to the NetEco 1000S.

Prerequisites

• You have logged in to the NetEco 1000S as the installer.
• You have added a device to the NetEco 1000S and the device state is normal. 
• The inverter license controls the smart I-V curve diagnosis function. To ensure that smart I-V curve diagnosis works properly, perform scheduled inspection and import the inverter license file. 
• It is recommended that the modules in an array have the same cleaning status in a diagnosis task.
• During the diagnosis, the irradiance must be greater than 600 W/㎡. Otherwise, the scan may fail on some PV strings, affecting the consistency of scan results.
• You are advised to clean the PV modules before the diagnosis to ensure that the test data reflects the actual status of the PV modules.
• You are advised to perform the diagnosis between 11:00 and 13:00 to avoid shading.
• The PV modules in the same array have an identical type and model. Every PV string has the same number of PV modules connected in series.
• Currently, the supported type of PV modules is common mono crystalline silicon or common polycrystalline silicon.

Procedure

1. Choose Monitor > select one inverter > Settings > String details setup > fill the requested data for your PV panel installed > OK. If the configuration is the same for all inverters, click Batch Apply.
   NOTE:
   Skip this step if you already configured string details.
   
   
   

2. Choose Maintenance > Device License Management > Upload License > Browse the file from your computer and Upload
   
   NOTE:
   If you don't have the device license, go to License Application > select devices > Export License Application File and send it to your distributor to get the license file.

   
   

3. After you upload the license select Load License>Load all and Confirm

4. Choose Maintenance > Smart I-V Curve Diagnosis from the main menu.
   
   
5. Click Start Scanning > Setup the task (see parameters below) > click Save.
   Task type: 
   Task On Plant-Level The health check applies to strings for all inverters connected to a PV plant.
   Task On Inverter-Level The health check applies to all strings for an inverter.
   PV plant:
   In the PV plant area, select the SmartLoggers or inverters to be scanned.
   An unlimited number of SmartLoggers can be scanned simultaneously.
   A maximum of 100 inverters can be scanned simultaneously.
   Cleaning status:
   Specifies the cleaning status of a string. Select a value as required.
   Environmental data:
   Auto The system will automatically calculate the values of Irradiance and Temperature of panel.
   Manually You need to manually enter the values of Irradiance and Temperature of panel.
   
   

6. After a task is set, smart I-V curve diagnosis starts immediately:

   
   
   

7. To view the diagnosis result click under  Operation column. The diagnosis task execution result is displayed:
   
   
   

8. Click Read The Details. The diagnosis details are displayed:
9. To query the intelligent diagnostic report go to Smart I-V Curve Diagnosis > click .

   The Diagnostic Report page is displayed:

   • Query Information of Task: The basic information of the string diagnosis task is displayed.
   • Query Overview on Diagnosis: The pie chart and detailed information of the diagnosis result are displayed
   • Query List Of Defective Strings: Information of all defective strings is displayed
      

10. To export the Report go to Smart I-V Curve Diagnosis > click > select the reports to be exported as required, and click OK.