Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Dahai Zhang, Xiandong Ma, Yulin Si, Can Huang, Bin Huang and Wei Li
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Dahai Zhang: Ocean College, Zhejiang University, Hangzhou 310058, China
Xiandong Ma: Engineering Department, Lancaster University, Lancaster LA1 4YR, UK
Yulin Si: Ocean College, Zhejiang University, Hangzhou 310058, China
Can Huang: Ocean College, Zhejiang University, Hangzhou 310058, China
Bin Huang: Ocean College, Zhejiang University, Hangzhou 310058, China
Wei Li: State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

Energies, 2017, vol. 10, issue 2, 1-14

Abstract: This paper analyses the effects of doubly fed induction generator (DFIG) tidal current turbines on a distribution grid under unbalanced voltage conditions of the grid. A dynamic model of an electrical power system under the unbalanced network is described in the paper, aiming to compare the system performance when connected with and without DFIG at the same location in a distribution grid. Extensive simulations of investigating the effect of DFIG tidal current turbine on stability of the distribution grid are performed, taking into account factors such as the power rating, the connection distance of the turbine and the grid voltage dip. The dynamic responses of the distribution system are examined, especially its ability to ride through fault events under unbalanced grid voltage conditions. The research has shown that DFIG tidal current turbines can provide a good damping performance and that modern DFIG tidal current power plants, equipped with power electronics and low-voltage ride-through capability, can stay connected to weak electrical grids even under the unbalanced voltage conditions, whilst not reducing system stability.

Keywords: doubly fed induction generator (DFIG); tidal current turbine; distributed generation (DG); network unbalance; system stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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