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Greenbyte Documentation

Performance Index Time Window

It shows the performance index, limited to a selected time window within a day.

Technology

Solar

Remarks

You only find this signal in the Data Studio of Greenbyte Solar.

Required metadata fields:

  • Performance Irradiance Cut-In (W/m2) (Inverter metadata 13)

  • Performance Time Window Start (hh) (Inverter metadata 11)

  • Performance Time Window End (hh) (Inverter metadata 12)

Equation
Performance_Index_Time_Window_-_Equation.png

Where:

PITW

is the Performance Index Time Window

PCP,perf

is Cascading Potential Power - Solar

I

is Solar Irradiance Reference

Cut-inIP

is the Performance Irradiance Cut-In (W/m2) (Inverter metadata 13)

t

is the Timestep

tTWstart

is Performance Time Window Start (hh), a defined starting hour, t >= tTWstart. (Inverter metadata 11)

tTWend

is Performance Time Window End (hh), a defined ending hour, t < tTWend. (Inverter metadata 12)

E

is the Energy or Power with Fallback

T

is the device resolution in hours

Inputs
Performance_Index_Time_Window_-_Inputs.png
Usage Example

In this example, you can see how the Performance Index is calculated for the whole day, but Performance Index Time Window (green line) is only calculated for the part of the day defined by the time window.

Performance_Index__Availability_Corrected__-_Usage_Example.png