HT Italia SOLAR300, Руководство пользователя

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SOLAR300 - SOLAR300N
EN - 140
10. APPENDIX – THEORETICAL OUTLINES
10.1. TESTING PV SYSTEMS
According to the requirements of the laws in force, the result of the test depends on
settings about Temperature effects compensation and
PRp calculations :
Corr.Type Tcel value PRp calculation Guideline
Tmod Tcel = PV Module Temp. measured








 

n
STC
p
ca
P
G
G
Rfv
P
PRp
2
CEI
82-25
(Italian
Guideline)
Tamb
or
Tenv
Tcel = PV module Temp. calculated
 
800
G
20 Tamb Tcel
p
   
NOCT
nDC Tcel = PV Module Temp. measured
 
n
ca
cel
p
STC
P
P
T
G
G
PRp









    
25
100
1

- - -
where:
Symbol Description Meas. unit
p
G
Irradiance on PV module surface
 
2
W/m
STC
G
Standard Irradiance = 1000
 
2
W/m
n
P
Nominal Power = sum of all power module (Pmax )
included in the part of PV plant under test
 
kW
ca
P
AC Active Power measured
 
kW




  
 

C) 40 Tcel (if
100
40) - (Tcel - 1
C) 40 Tcel (if 1
2

Rfv
Thermal Corrective factor

Absolute value of Pmax thermal coefficient
 
C %/

NOCT Normal Operating Cell Temperature (@ 800W/m
2
, 20°C,
AM=1.5, vel. Aria =1m/s).
 
C %/

Previous relationship are valid if Irradiance > Min Irraddiance value (see user’s manual
of the MASTER instrument) and the Irradiance values are “steady”: if IP

1min

( Irr max
– Irr min) < 20W/m
2