Labview-Matlab integration for analyzing energy data of PV plants

Abstract

The  paper  proposes  the  design  of  a  Labview  interface    for    acquiring,    pre-processing,    processing    and    visualizing data deriving from PhotoVoltaic  (PV) plants. Some specific  procedures  for  analyzing  the  energy  performances  of  PV  plants  and  implemented  in  Matlab  environment  have  been  integrated  in  the  Labview  interface.  Its  user-friendly  approach  allows  the  utilization  of  these  complex  routines  to  everybody.  As voltage, current and energy of the DC side as well as of the AC side can give useful information about the operation of the PV  plant  (not  only  if  failure  is  present  but  also  if  little  mis-operation is), the proposed interface allows also to compare the data of a specific date with other ones. The comparison with the data  of  the  same  date  of  a  previous  year  allows  to  verify  the  trend  of  the  performances,  provided  that  similar  environmental  conditions exist. A real application is presented.