BS EN IEC 61400-21-1:2019

This part of IEC 61400 includes:
• definition and specification of the quantities to be determined for characterizing the electrical characteristics of a grid-connected wind turbine;
• measurement procedures for quantifying the electrical characteristics;
• procedures for assessing compliance with electrical connection requirements, including estimation of the power quality expected from the wind turbine type when deployed at a specific site.

The measurement procedures are valid for single wind turbines with a three-phase grid connection. The measurement procedures are valid for any size of wind turbine, though this part of IEC 61400 only requires wind turbine types intended for connection to an electricity supply network to be tested and characterized as specified in this part of IEC 61400.

The measured characteristics are valid for the specific configuration and operational mode of the assessed wind turbine product platform. If a measured property is based on control parameters and the behavior of the wind turbine can be changed for this property, it is stated in the test report. Example: Grid protection, where the disconnect level is based on a parameter and the test only verifies the proper functioning of the protection, not the specific level.

The measurement procedures are designed to be as non-site-specific as possible, so that electrical characteristics measured at for example a test site can be considered representative for other sites.

This document is for the testing of wind turbines; all procedures, measurements and tests related to wind power plants are covered by IEC 61400-21-2.

The procedures for assessing electrical characteristics are valid for wind turbines with the connection to the PCC in power systems with stable grid frequency.

Cross References:
EN 61000-3-3
EN 62008
IEC 61000-4-30
EN 61000-4-30
IEC TR 61000-3-6
IEC TR 61000-3-14
IEC TR 61000-3-7
IEC 61000-3-3
IEC 62008
IEC 61000-4-7:2002
EN 61000-4-7:2002
IEC TR 61869-103:2012
EN 61000-3-2:2014
IEC 61000-4-15:2010
EN 61000-4-15 (IEC 61000-4-15:1997 AS)
EN 61000-4-7:2002/A1:2009
IEC 61000-3-2:2014
IEC 61000-4-7:2002/AMD1:2008
IEC 60050-448:1995
IEC 60050-131:2002
IEC 60050-614:2016
EN 61400-27-1:2015
IEC 60050-415:1999
IEC 61400-27-1:2015
IEC 60050-161:1990


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