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Modern wind power plants are required and designed to ride through faults in electrical networks, subject to fault clearing.
Wind turbine fault current contribution is required from most countries with a high amount of wind power penetration.
In order to comply with such grid code requirements, wind turbines usually have solutions that enable the turbines
to control the generation of reactive power during faults. This paper addresses the importance of using an optimal injection
of active current during faults in order to fulfi l these grid codes. This is of relevant importance for severe faults,
causing low voltages at the point of common coupling. As a consequence, a new wind turbine current controller for
operation during faults is proposed. It is shown that to achieve the maximum transfer of reactive current at the point
of common coupling, a strategy for optimal setting of the active current is needed.
CitationMartinez, J. [et al.]. Active current control in wind power plants during grid faults. "Wind energy (John Wiley and Sons)", Novembre 2010, vol. 13, núm. 8, p. 737-749.
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