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Title:
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EeFarm II. Description, testing and application
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Author(s):
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Pierik, J.T.G.; Axelsson, U.; Eriksson , E.; Salomonsson, D.
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Published by:
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Publication date:
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ECN
Wind Energy
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24-2-2011
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ECN report number:
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Document type:
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ECN-E--09-051
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ECN publication
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Number of pages:
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Full text:
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175
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Download PDF
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Abstract:
In this project, a user friendly computer program, EeFarm-II, for wind farm electrical
and economic evaluation has been developed. EeFarm-II has been built as a Simulink
Library in the graphical interface of Matlab-Simulink. The EeFarm-II Library consists of wind
farm component models, such as models of wind turbines, generators, transformers, AC cables,
inductors, nodes, splitters, PWM converters, thyristor converters, DC cables, choppers
and Statcoms.
Each EeFarm-II component model calculates the output voltage and current phasor (AC) or
voltage and current value (DC) based on the input voltage and current and the component
parameters. This is repeated for the complete operation range of the wind farm, i.e. the range
of input wind speed. Secondly, the total price of the electrical system (if wind turbine prices
are not included) or of the wind farm (if wind turbine prices are included) is determined.
Based on the output power for each wind speed bin and the wind speed distribution, the annual
produced energy is determined. The final step is the calculation of the Levelised Production
Costs (LPC).
After EeFarm-II testing at ECN, the program has been made available to Vattenfall for testing
and application.
EeFarm-II has also been used to re-evaluate the thirteen electrical systems of the Erao-1 study
of 2001.
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