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Volume 8 (1); March, 2019


JWEET 1042Research Paper

Performance Evaluation of DFIG to Changes in Network Frequency.

Tayebi-Derazkolaie R, Ebadi M, Emarati-Nooshabadi SJ.

J. World. Elect. Eng. Tech., 8(1): 01-06, 2019; pii:S232251141900001-8

Abstract

Inertia response is the initial response of a generator to the frequency changes of a network and its presence in network is a matter of importance. Synchronous generators have high inertia response naturally. The more tendencies to renewable energies, the more usage of wind power plants in power systems. Due to advantages of doubly fed induction generator (DFIG), this kind of generator constitutes the most wind generators in power plants. Unlike the synchronous generators, DFIGs have negligible inertia response which is caused by generator controller operation. Thus, the evaluation of controller type on its performance is necessary. In this paper, a DFIG with two type of controllers (modified and unmodified) has been simulated in MATLAB/SIMULINK. Besides, the generator operation with network frequency droop conditions has been surveyed and compared as well as the effect of mentioned controllers’ action speed on generator’s inertia response. The Results showed that the inertia response can be improved significantly by modifying the generator controller system.

Keywords: DFIG, Inertia Response, Controller Performance, Renewable Energy

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