Determination of dynamic problems associated with the wind power plants in Turkish transmission system

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2015
Akyel, Anıl
From the early 20th Century, the intense population growth around the world resulted in large increases in the power plants, both by means of number and size. However, this increase brought many concerns, including environmental and human health related ones. This has resulted in renewable energy sources to rise over conventional power plants. Among renewable energy sources, thanks to their simplicity and convenience, wind turbines became of considerable importance. As a result, a large number of wind farms have been installed and integrated to the grid worldwide. As the wind oriented generation levels increased, several new concerns arose. Among them, the threat on system stability and security introduced by the wind farms present in the system which may play a role in the event of a fault is regarded as the main concern. In order to investigate this problem and related concerns, a simplified yet realistic model of Turkish Generation/Transmission system is implemented on Digsilent Powerfactory computer software. With the present wind farms in operation added to the system model, transient analyses for three phase to ground faults are carried out. The analyses are performed individually for different wind farm installed capacity values and breaker operation times with the results recorded after each analysis. The installed capacity values for each wind farm are chosen to be equal to a given vi percentage of the short circuit power at the bus that the wind farm is connected to. Regarding circuit breaker operation times; theoretical and practical minimum, average, above-average and maximum allowed durations are considered and their effect on the results are analyzed. The simulation results are examined and evaluated in a comparative manner, thus presenting the scales of dynamic effects of wind farms on the transmission system with respect to the wind oriented generation and wind farm installed capacity levels.

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Citation Formats
A. Akyel, “Determination of dynamic problems associated with the wind power plants in Turkish transmission system,” M.S. - Master of Science, Middle East Technical University, 2015.