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

Mengqi Qing, Fei Tang, Fusuo Liu, Dichen Liu, Nianchun Du and Benxi Hu
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Mengqi Qing: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Fei Tang: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Fusuo Liu: Nanrui Group, State Grid Electric Power Research Institute, Nanjing 211111, China
Dichen Liu: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Nianchun Du: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Benxi Hu: School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China

Sustainability, 2020, vol. 12, issue 23, 1-21

Abstract: 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.

Keywords: DFIG; frequency response model; frequency stability constraint; small-signal model; frequency control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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