A STATCOM with Supercapacitors for Low-Voltage Ride-Through in Fixed-Speed Wind Turbines

Andrés Felipe Obando-Montaño, Camilo Carrillo, José Cidrás and Eloy Díaz-Dorado
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Andrés Felipe Obando-Montaño: Department of Electrical Engineering, University of Vigo, EEI, Campus Universitario. s/n, Vigo 36310, Spain
Camilo Carrillo: Department of Electrical Engineering, University of Vigo, EEI, Campus Universitario. s/n, Vigo 36310, Spain
José Cidrás: Department of Electrical Engineering, University of Vigo, EEI, Campus Universitario. s/n, Vigo 36310, Spain
Eloy Díaz-Dorado: Department of Electrical Engineering, University of Vigo, EEI, Campus Universitario. s/n, Vigo 36310, Spain

Energies, 2014, vol. 7, issue 9, 1-31

Abstract: Fixed-speed wind generator (FSWG) technology has an important presence in countries where wind energy started to be developed more than a decade ago. This type of technology cannot be directly adapted to the grid codes, for example those requirements related to the immunity level under voltage dips. That behavior is typically referred as low-voltage ride through (LVRT), and it usually implies certain reactive and active power injection requirements, both during a voltage dip and during the voltage recovery. In this context, a review is presented of the LVRT exigencies present in some of the countries with the most advanced grid codes (Denmark, Germany, Spain and the United Kingdom). In this paper, the capabilities of STATCOM-based devices for fulfilling the LVRT requirements in FSWGs are analyzed. For this purpose, two technologies are considered: a STATCOM with a supercapacitor, which improves its energy storage features; and a STATCOM with a supercapacitor and a DC-DC converter, to achieve higher discharge levels.

Keywords: wind energy; fixed-speed wind generator; STATCOM; supercapacitor; low-voltage ride-through (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: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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