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Wind power plant (WPP) is often operated at unity power factor, and the utility host where the WPP connected prefers to regulate the voltage. While this may not be an issue in a stiff grid, the connection to a weak grid can be problematic. This paper explores the advantages of having voltage regulation capability via reactive power control. Another issue in wind power generation is that not all turbines...
This paper investigates the potential for wind power plants (WPPs) to damp interarea modes. Interarea modes may be the result of a single or a group of generators oscillating against another group of generators across a weak transmission link. If poorly damped, these power system oscillations can cause system instability and potentially lead to blackouts. Power conversion devices, particularly, megawatt-scale...
A synchronous condenser consists of a free-spinning wound-field synchronous generator and a field excitation controller. In this paper, we propose a synchronous generator that employs a permanent magnet synchronous generator (PMSG) instead of a wound-field machine. PMSGs have the advantages of higher efficiency and reliability. In the proposed configuration, the reactive power control is achieved...
A synchronous condenser (SC) using a permanent magnet synchronous generator (PMSG) is proposed for providing necessary reactive power to a wind power plant to support its connection to a weak grid. A PMSG has the advantage of higher efficiency and reliability. Because of its lack of a field winding, a PMSG is typically controlled by a full-power converter, which can be costly. In the proposed system,...
Permanent Magnet Synchronous Generator (PMSG) offers higher efficiency than induction and wound-field generators. This higher efficiency, however, manifests itself as a lack of natural damping. When connected to an AC voltage source, a small, sustained sub-synchronous oscillation is often observed. In this paper, we present a method for damping such undesirable oscillation without the need for a full...
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