A daily SCADA monitoring checklist for a solar power plant is crucial for maximizing performance, ensuring safety, and identifying faults early. Below is a brief morning and evening SCADA monitoring checklist, focused on production and system health. 

Morning Checklist (08:00 - 10:00)

The goal is to ensure the plant has started up correctly and all equipment is communicating.

SCADA Connectivity: Verify that all inverters, trackers, and weather stations are online and transmitting data.

Inverter Startup: Confirm all inverters have woken up, are in 'Generating' mode, and have no active fault codes.

Grid Sync: Check that AC grid parameters (voltage, frequency, power factor) are within normal operating ranges.

Weather Data Check: Confirm the irradiance sensor (Pyranometer) is active and reflecting the current sunny/cloudy conditions.

Instantaneous Power Check: Compare current active power output (kW) with expected levels based on irradiance. 

Evening Checklist (17:00 - 19:00)

The goal is to analyze the day’s production, ensure safe shutdown, and check for end-of-day errors. 

Daily Production Check: Review total daily energy generation (kWh) and compare it with the expected/planned target.

Performance Ratio (PR): Check the final daily Performance Ratio. A healthy PR is typically >=75%, indicating how efficiently the plant converted sunlight.

Inverter Shutdown Status: Verify that inverters have moved from 'Generating' to 'Standby' or 'Shutdown' mode as daylight fades.

Fault Log Review: Review the event log for any errors that occurred during the day (e.g., Grid Faults, String Mismatch, Overheating).

Soiling Check: Compare the late-afternoon power output against a clear-sky day to identify if cleaning is required. 

Key Metrics to Track Daily

Daily Energy Generation (kWh)

Performance Ratio (PR)

Inverter Faults/Alarms

Grid Voltages/Frequency