Greenbyte Documentation

Lost production to performance (inverter normalized)

This estimates the lost production due to inverter under-performance by comparing the denormalized power with the effective power for each inverter.

This signal is used as part of the inverter-normalized calculation method. Therefore, the Lost Production to Performance (inverter normalized) signal will return a 0 value only if the entire site is offline (i.e. if grid meter based availability equals 0).

If an inverter is offline while any other inverters at the site are online, the offline inverter’s lost production will still be allocated to Lost Production to Performance (inverter normalized).

Note

If there are several grid meters at the site, the site will be considered down only if all grid meters are unavailable. This means that the Lost Production to Performance (inverter normalized) returns 0 as long as all the grid meters have a grid meter based availability below 1.

Negative values are not allowed.

Technology

Solar

Equation

lost_prod_perf_inv_norm_eq.png

where

Elost,performance is the Lost Production to Performance (inverter normalized)

Pdenorm is the denormalized power

Peffective is the effective power

Agridmeter is the grid meter based availability

T is the device resolution in hours

Inputs

lost_production_to_performance_inv_norm_inputs.png

Usage example

Here plotted in data studio

lost_prod_perf_inv_norm_usage.png