This document provides instructions for using PVSYST 6 software to model a photovoltaic (PV) system. It outlines the mandatory and optional inputs needed, including location details, technical specifications, and orientation parameters. It then describes how to enter location details using geographic coordinates or address and import meteorological data. Steps are provided for optimizing the tilt angle to minimize radiation losses and module placement to limit shading losses. Recommendations are made for string configuration and inverter selection. The user is instructed to input ohmic loss fractions between certain ranges to model losses from the array to inverter and inverter to point of injection.

1. PV SYST-
ashishverma@gensol.com

2. Mandatory
• Orientation
• System
• Detailed losses
Optional
• Horizon
• Near Shading
• Module Layout
• Economic eval.
• Miscellaneous tools

4. Location details
1. Coordinates: Latitude (N or S) & Longitude (E or W)
Or
Address
2. Pin code ,State & Country
Technical details
1.Type of system : On Grid /Off grid
2. PV Module technology : Mono/Poly/Thin-film
3.Module Capacity :Wp or make
4. Inverter : Type ,Capacity, Make

5. latitude(N or S) /Longitude(E or W) & Altitude(in Meter )
(0° = South Reference
(+ Angle for Clock wise
(- Angle for Anti clock wise
Don’t go any where, Just use this feature in PVSYST 6
Follow the steps
Databases
Click on
geographical
site
Choose new
option
Go to
Interactive
Map section
•Enter your
Location
How it looks
like

6. Database
Click on
geographical
site
Go to New
option
Choose
Interactive Map
& Enter
location /lat
long on address
bar then click on
Import
Go to
Geographical
Coordinate
section &Verify
details ,choose
Meteodata
source i.e
Meteonorm6 or
NASA-SSE
Click on
Import>in
Monthly meteo
section ,click on
OK button Save
the file

9. Fixed tilted Plane
Loss by respected to optimum should be 0%
Global radiation on collector plane
Tilt
angle
Loss by respect
to Optimum(%)
Global radiation on
collector plane (kWh/m²)
29 -0.1 2224
30 -0.1 2226
31 0 2227
32 0 2227
33 0 2227
34 0 2227
35 -0.1 2226

10. • The shading losses should be in limit ≤1.40%
Module Placement on tilted plane
If module mounting is Portrait : Enter the (L)length (in meter)
If module mounting is landscape : Enter the (W)width (in meter)
(check out these dimension from Module sheet )
Show Optimization Shading loss %> Change the Pitch value till the
shading losses limit up to 1.40% >Exit from orientation

12. string ,Central or micro based on economics(investment/Wp) , ease of
installation and efficiency ,No of mppt , make ,% loading on inverter (oversized or under size )

14. Go to DC circuit: ohmic losses for the array > click on loss fraction at STC > Enter the value in between 1.10% -1.30%
(these losses computed considering ohmic losses of array to String combiner box and String combiner boxes to Inverter)
These loses occur due to resistance of DC wire in the Module strings to String combiner box/String Monitoring box and
string combiner box to Inverter DC input.

15. Go to AC circuit: Inverter to injection point> click on loss fraction at STC > Enter the value in between 0.50% -0.80%
(these losses occur at Inverter output to Point of injection of energy in to the grid (switch yard).The losses include Ohmic loss in
Inverter output to LT panel ,LT panel , HT panel .)
*Transmission line losses are not included on this because it depends upon the point of injection /Joint metering panel as per PPA
& respective state regulations.
The voltage drop should be below 2.1%