8th PVPMC Workshop, May 9-10 2017

1. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Steffen Lindemann
Martin Hofmann
Rainer Hunfeld
Valentin Software
www.valentin-software.com
8th PV Performance Modeling and
Monitoring Workshop

2. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Agenda
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• Company and Products
• Recent improvements
• One-minute resolution of irradiance and what it means
• Near shading objects - how PV*SOL deals with this
• PV is no longer only PV

3. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Valentin Software
29
20
12
3
years experience
employees
more than 12.000 customers
business partners

4. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Professional tools for experts
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PV*SOL
Design Software for Photovoltaik Systems
... first version released in 1998
… is well well known and the results are accepted
… is used world wide as an important tool in the planning process
… has a high precision in calculation and simulation
… is easy to learn and to use
… calculates grid-connected and off-grid PV-plants,
with electrical appliances,
battery-systems,
electrical vehicles
… has huge databases

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Recent improvements
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• Exceedance probability for the forecast yield (P50/P90)
• Portuegese (the 7th language)
• Net-metering model
• Import of satelite data in 3D

8. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Simulation in One-Minute resolution
• Simulation in One-minute-steps
sometimes can be the best choice
• And it’s easy in PV*SOL: only one click
• What have we done in the backgound?
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9. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Synthesizing Algorithm
1. Analysis of each day of measurement
(Based on one-minute measurement values from BSRN)
2. Statistical analysis of hourly averaged kt
(clearness index) allows for detection of weather
situation
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10. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Results - Realistic variability
Global irradiance data from Lindenberg,
May 14, 2005 (BSRN)
Measured 7.0
New (Hofmann) 8.2
Aguiar 13.1
Skartveit 16.6

11. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Results - High statistical quality
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RMSE of irradiance in %
Aguiar 0.530 596
Skartveit 0.684 862
Hofmann 0.210 207

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One-Minute resolution
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Source: PV-Symposium 2017, Jan Remund
Available in PV*SOL and also in Meteonorm 7.2

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June 18 - hrs
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June 18 - min
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June 18 - hrs
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June 18 - min
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17. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Results of self-consumption
without batteries
Example of simulation results:
• Self consumption (hrs): 28.6%
• Self consumption (min): 22.4%
• Self sufficiency (hrs): 26.3%
• Self sufficiency (min): 20.5%
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June 18 with battery - hrs
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19. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
June 18 with battery - min
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20. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
Results of self-consumption
with batteries
• Example of simulation results:
• Self-consumption (hrs): 59.3%
• Self-consumption (min): 52.9%
• Self-sufficiency (hrs): 56.2%
• Self-sufficiency (min): 50.3%
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A very simple PV-plant
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IV-Curves without shading
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Near shading objects
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IV-Curves with shading
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IV-Curves with shading
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IV-Curves with shading (PO)
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0 50 100 150 200 250 300 350

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IV-Curves with shading (PO)
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0
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0 50 100 150 200 250 300 350

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IV-Curves with shading
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14
0 50 100 150 200 250 300 350

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PV is no longer only PV
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What have we done in PV*SOL?

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• Integration of electrical vehicles in our database
• Development of a mathematical modell
• Some easy inputs in the User Interface:
• Desired driving range per day
• Time at charging station
• Charging mode
What have we done in PV*SOL?

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Charging of the electric car with PV
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Example: Carpet plot with one-minute-values for one year

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Polystring – coming soon (Nov 2017)
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34. 8th PV Performance Modeling and Monitoring Workshop in Albuquerque, Steffen Lindemann
www.valentin-software.com
Tutorials on our YouTube-channel
„ValentinSoftware“
steffen.lindemann@valentin-software.com