Greenbyte Documentation

Performance Index

A measure of how well the turbine is performing. It is calculated by dividing actual production with theoretical production for times when there are neither active stops or curtailments. The difference to Production Factor is that Performance Index filters out time with active stops or curtailments.

Note

Note that the time with active warnings is not filtered out.

This signal uses power with a fallback to energy and requires either one of those to have a value. It also requires cascading potential power data, that the Time-based system availability is 100% and that no active curtailment statuses exist.

Technology

Wind: Turbine

Equation
performance_index_eq.jpg
energy_theoretical_eq.jpg
energy_actual_eq.jpg

where:

PI

Performance index

Etheoretical

is theoretical production

Eactual

is actual production

Pcasc

is Cascading potential power performance

T

is device resolution in hours

Aactual

is Actual availability

ATS

is Time-based system availability

P

is Power

E

is Energy Export

Inputs
perfoamcne_index_in.jpg
Example

The graph below shows performance index plotted in an Average over time widget.

performance_index_ex.jpg