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Title:
 
Minimizing Energy Storage Requirement for PV Power Ramp-Rate Limitation Controlling the Inverters MPPT
 
Author(s):
 
I. , J. Marcos, M. García, L. Marroyo
 
Keywords:
 
Large Grid-Connected PV Systems, Storage, Prediction, Grid Stability
 
Topic:
 
OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (from Cells to Systems)
Subtopic: Operation of PV Systems and Plants
Event: 29th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5CO.15.3
 
Pages:
 
2376 - 2379
ISBN: 3-936338-34-5
Paper DOI: 10.4229/EUPVSEC20142014-5CO.15.3
 
Price:
 
 
0,00 EUR
 
Document(s): paper, presentation
 

Abstract/Summary:


Short-term variability in the power generated by large grid-connected PV plants can negatively affect power quality and the network reliability. New grid-codes require combining the PV generator with some form of energy storage technology in order to reduce short-term PV power fluctuation. Herein, an effective control is proposed to comply with the maximum allowable ramp-rate limitation with the minimum energy storage capacity. This works presents a new state of charge (SOC) control involving some changes in the the maximum power point tracking (MPPT) algorithm of the inverters. The solution is corroborated with 1-year 5 second power measurements which were recorded at the output of 550 kW inverters at the 38.5 MW Amareleja (Portugal) PV plant.