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IEC 61400-21 Ed. 2.0 b:2008

Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines

"IEC 61400-21:2008 covers the definition and specification of the quantities to be determined for characterizing the power quality of a grid connected wind turbine; measurement procedures for quantifying the characteristics; and procedures for assessing compliance with power quality requirements, including estimation of the power quality expected from the wind turbine type. The main changes with respect to the previous edition deal with interharmonics and current distortions (<9 kHz); response to voltage dips; active power ramp rate limitation and set-point control; reactive power capabilities and set-point control; grid protection and reconnection time after grid faults."


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International Electrotechnical Commission [IEC]


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