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Energy storage system is necessary to maintain steady operation of the micro-grid and decrease its influence on the distribution grid. In this paper, some research has been carried on in optimal storage sizing in composite energy storage system in wind micro grid. The energy storage system is composed of battery and fly-wheel, which combines advantages of both sides. Cost function is used as the objective...
When a non-bolted-three-phase-fault occurs in the outgoing transmission line from a DFIG-based wind farm with low-voltage-ride-through (LVRT) capability, the wind power side bus voltage and short-circuit current may have inconsistent main frequencies. This paper is devoted to exploring the reason theoretically. Based on the fundamental of induction generators, a simplified three-order dynamic model...
A DFIG-based wind generator electromagnetic transient model is established on the RTDS platform in this paper. Stator flux oriented vector control scheme is adopted to achieve power decoupling control in the DFIG based wind model. In order to research the impact of the wind farm on the existing protection relay of the network, this paper establishes single machine electromagnetic dynamic equivalent...
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