Master Thesis - Deterministic and stochastic assessment
Wind turbines with full converters are being extensively implemented in large offshore wind farms.
Master Thesis - Deterministic and stochastic assessment of harmonic cancellation in offshore wind farms
Overall project description
Wind turbines with full converters are being extensively implemented in large offshore wind farms; connected through an unsymmetrical widespread collection cable network and connected by long transmission cables to the system. This represents new challenges to the industry in relation to understanding the nature and propagation of harmonics.
Various cancellation phenomena are possible based on a deterministic as well a stochastic approach. There is great uncertainty as to how harmonic components are summing each other in such systems as offshore wind farms. As there are no coherent recommendations or standards, the analysis method is not well defined. Thus, harmonic summation studies are challenging in the wind power industry.
Detailed project description
The project is expected to cover deterministic (time and frequency domain) as well as stochastic modelling of wind turbines operating in clusters in large offshore wind farms. Deterministic modelling and optimisation of pulse-width modulation pattern as well as a stochastic Monte Carlo approach can be performed in such engineering tools as MATLAB, Power Factory or PSCAD.
An extensive set of synchronized measurement data can be used in order to validate the models and exhibit challenges seen in existing wind farms. Data processing can be performed in LabVIEW, MATLAB or other sophisticated engineering tools.
The project is expected to:
- provide knowledge about harmonic cancellation possibilities in wind farms
- provide guidelines to harmonics summation procedures
- investigate harmonic cancellation possibilities between wind turbines.
Category:
Electrical systems
Project type:
Master of science thesis project
Number of students:
One or two
Department:
Electrical System Analysis
Contact us
Please do not hesitate to contact windthesis@dongenergy.dk if you have further questions.
We look forward to receiving your application as electronic files by 15 June 2015.
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