Array Nodal Data

The Array nodal data provides timestep results for the array level, which aggregates inverter outputs and applies AC collection losses, auxiliary loads, degradation, and transformer losses. Arrays represent a grouping of inverters that share common AC infrastructure.

Description of Nodal Data Parameters

Parameter	Units	Description
Timestamp	yyyy-MM-dd HH:mm:ss	Date and time for the calculation timestep
AC Collection Loss	W	Power loss in the medium-voltage collection system between the array MV transformer output and the plant-level HV equipment
Data Acquisition System Loss	W	Auxiliary power consumption for data acquisition and monitoring equipment at the array level
Shelter Cooling Loss	W	Auxiliary power consumption for inverter shelter or enclosure cooling systems
AC Power Output	W	AC power output from the array after AC collection system losses
Tracker Motor Loss	W	Auxiliary power consumption for tracker motor operation, aggregated for all trackers in the array
Total AC Power from Inverters	W	Sum of AC power output from all inverters in the array before auxiliary losses and degradation
Degradation	—	Degradation coefficient applied to the array power output, representing cumulative module degradation over time
AC Power After Degradation	W	Array AC power after applying the degradation coefficient to the total inverter power output
AC Power Into Transformer	W	AC power entering the array-level MV transformer, after auxiliary losses and degradation
Transformer Losses	W	Power losses in the array-level MV transformer, including no-load and load-dependent losses
Transformer Output Power	W	AC power output from the array MV transformer, available for aggregation to block level

Introduction

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Knowledge Base

Description of Nodal Data Parameters

​Description of Nodal Data Parameters

Description of Nodal Data Parameters