An Analytical Method for Estimating the Maximum Penetration of DFIG Considering Frequency Stability

With the increasing wind power in power systems and the wide application of frequency regulation technology, the accurate calculation of the limit wind power capacity in systems is critical to ensure the stability of the frequency and guide the planning of wind power sources. This paper proposes an...

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Bibliographic Details
Published in:Sustainability 2020-12, Vol.12 (23), p.9850
Main Authors: Qing, Mengqi, Tang, Fei, Liu, Fusuo, Liu, Dichen, Du, Nianchun, Hu, Benxi
Format: Article
Language:English
Subjects:
Alternative energy sources
Dynamic models
Electric power distribution
Exact solutions
Frequency analysis
Frequency dependence
Frequency domain analysis
Frequency response
Frequency stability
Induction generators
Optimization
Power sources
Simulation
Sustainability
Time constant
Wind power
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Summary:With the increasing wind power in power systems and the wide application of frequency regulation technology, the accurate calculation of the limit wind power capacity in systems is critical to ensure the stability of the frequency and guide the planning of wind power sources. This paper proposes an analytical method for calculating the maximum wind generation penetration under the constraints of frequency regulation control and frequency stability taking doubly fed induction generator as an example. Firstly, the frequency-domain dynamic model of the doubly fed induction generator is established considering the supplementary frequency proportion-differentiation control under small disturbance. The equivalent inertia time constant of the doubly fed induction generator is calculated. On this basis, the frequency response model of the power system with the consideration of wind power integration in frequency regulation control is constructed. Then, the frequency-domain analytical solution of the system frequency is obtained. Finally, with the constraint by the steady-state deviation and dynamic change rate of the system frequency, the maximum wind generation penetration is analytically solved. The accuracy of the proposed analytical calculation method for the limit value of the percentage of wind power is verified by MATLAB/Simulink.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12239850