This standard covers the following:
——Evaluation procedures in accordance with power quality requirements, including assessment of the power quality expected from wind turbine types;
——Measurement procedures to quantify the characteristics;
——Possible groups when deployed at a particular site. Assessment procedure for compliance with power quality requirements, including the power quality expected for each type of wind turbine. Unless the wind turbine is operated to actively control frequency or voltage at any location within the grid, the measurement procedure is a three-phase Valid for a single grid-connected wind turbine. Although this standard applies only to wind turbine types intended for the point of common coupling (PCC) at MV or HV, the measurement procedures are valid for all wind turbines, although they are tested and characterized as specified in this standard. The measured characteristics are valid only for the specific configuration of the wind turbine evaluated. When evaluating the power quality of wind turbines, wind turbines that are measured differently with different control parameters require separate evaluation. The measurement procedure is conducted at a non-specific site so that the power quality characteristics measured at the test site can be effectively considered at other sites. The evaluation procedure according to the requirements of power quality can be used for wind turbines associated with PCC in MV or HV of power systems with a fixed frequency within ±1 Hz and sufficient active and reactive power regulation capabilities. and generated by wind power
KS C IEC 61400-21:2013 history
2023KS C IEC 61400-21-2023 Wind turbines－Part 21：Measurement and assessment of power quality characteristics of grid connected wind turbines
0000 KS C IEC 61400-21-2013(2018)
2013KS C IEC 61400-21:2013 Wind turbines-Part 21:Measurement and assessment of power quality characteristics of grid connected wind turbines
2004KS C IEC 61400-21:2004 Wind turbine generator systems-Part 21:Measurement and ssessment of power quality characteristics of grid connected wind turbines