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E DIN IEC/TS 61400-21-4 VDE V 0127-21-4:2024-04

Wind energy generation systems

Part 21-4: Measurement and assessment of electrical characteristics – Wind turbine components and subsystems

(IEC 88/889/CD:2022); Text in German and English
Class/Status: Draft, valid
Released: 2024 -04   Published: 2024-03 -29
VDE Art. No.: 1100775
End of objection deadline: 2024-05-29

This document deals with:
- Definitions of Test Stands, Subsystems & Interface Descriptions
- Definition of the system requirements for the test bench to carry out these measurements (network strengths, Sk''', THD,..)
- Measurement method for quantifying the electrical properties;
- Test and measurement methods for electrical properties of components and subsystems in relation to compliance with network requirements.
- Procedure for the transfer of component and subsystem test results measured on the test bench to WT product families.
- Model requirements & validation procedures of components, subsystems and wind turbines.