PID with optimized system?

Hello, basking_in_the_sun2000
Thank you for your question, I will ask the photovoltaic engineer for details. I provide you with a link to the PID user manual:
https://support.huawei.com/enterprise/en/doc/EDOC1100033491/a0aea978?idPath=22892350|21439560|7921563|21102414|21869307
I hope to have some reference value for you.
Thanks

Hope you find a more encouraging solution, but after your post, I searched for a PID mitigation device

There is a company that advertises compatibility with solaredge optimizers, so guess optimizers might not help with PID :(

https://www.ilumen.be/en/pidbox-mini-only-compatible-pid-solution-to-solaredge-technology/

Hi,

After talking with PV engineers, the role of the optimizer is MPPT, it improves the energy yield of the PV system by continuously tracking the MPP of each PV module but no anti-PID function.
Your picture shows the voltage to ground, shows whether the device is grounded. If the device is not grounded, the ground voltage is 0V.

Thanks!

Ming, Thanks

The optimizers have a several functions and no anti-PID. These functions  includes a MPPT and a voltage converter.  However, it was this last feature, that I had hoped would allow the PID to be reduced. Since it occurs by a leakage current and seems to be proportional to the voltages the panel is subjected specially to ground.

Even though the optimizer doesn't isolate the panel, it does change the voltages the panel sees. This was why I thought, that maybe the panel being subjected to lower voltages would reduce the rate at which PID occurs.

Seems that optimizing the array won't change the rate. Especially considering several companies have developed anti-PID devices to be used with optimizer from other brands.

As a note, the entire array is grounded and each device is grounded by the mounting hardware of the optimizer. Hope to have a chance later in the week, to place the optimizers at a different spot. Maybe it didn't do enough damage to the anodized layer to provide adequate contact with the aluminum structure.

Follow-up: finally got a chance to reposition the optimizers that showed a high ground voltages. On initial inspection they all seemed securely attached and wouldn't budge (had some that seemed attached, but the plate on the screw didn't grabbed the rail and you could pull them out, but not with these). Did change their positions along the rail, and made sure that the two prongs of the screw were piercing the rail.

After doing that, still had a high voltage to ground. I cleaned the optimizer plate and the prongs. However, the voltage didn't improved. The only way I was able to get a value close to 0 before, was to replace the optimizer. Could there be an issue with them? Other than that, they seem to be working fine. Wouldn't want because of a voltage to ground to contribute to a PID

GOOD