Remote Access Challenges with Inverters at VA65 Crystal Hill Site

Created by Nirav Tailor, Modified on Thu, 4 Dec at 7:53 AM by Nirav Tailor

# Remote Access Challenges with Inverters at VA65 Crystal Hill Site

## Issue Overview

At the VA65 Crystal Hill site, our inverters are currently facing significant challenges with remote access. This situation is preventing the Remote Operations Control Center (ROCC) from derating the inverters (INVs) as necessary. While our Sungrow team is capable of making local adjustments, the inability to manage these settings remotely poses operational difficulties. This issue also raises important questions regarding warranty coverage and the extent of support we can provide in this scenario.

## Steps Taken

To address the derating issue, several proactive measures have been implemented:

- **Warranty Follow-Up**: Kaeli Acosta has reached out to warranty@vertech.com to seek assistance regarding the ongoing derating issue. This step is crucial to ensure that we explore all available options under our warranty coverage.

- **Support from Jacob Loop**: Jacob Loop has been involved to provide additional support with the warranty claim process. His expertise is essential to ensure that all necessary actions are taken promptly and effectively.

- **Inverter Control Modes**: Miguel Guzman has confirmed that the inverter control modes have been set to remote mode. This is a critical prerequisite for effective remote operation, ensuring that the inverters are ready to receive commands from the ROCC.

- **Communication Issues**: Nirav Tailor has reported that five inverters are currently offline and not communicating with the Power Plant Controller (PPC). This lack of communication could be a significant factor contributing to the remote access challenges we are experiencing.

## Outcome

As of now, the issue remains unresolved. The inverters are not accepting derate commands from the SCADA system, indicating a likely communication issue that requires further investigation. It is essential to determine the status of the warranty and outline the necessary next steps to resolve this ongoing problem. We appreciate your patience as we work diligently to address these challenges and restore full functionality to the inverters at the VA65 Crystal Hill site. If you have any questions or need further assistance, please do not hesitate to reach out to our support team.