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1. (WO2017036836) WIND TURBINE TEST

Pub. No.:    WO/2017/036836    International Application No.:    PCT/EP2016/069791
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Tue Aug 23 01:59:59 CEST 2016
IPC: G01R 31/34
G01R 31/42
G01R 19/25
G01R 31/28
Applicants: ABB TECHNOLOGY OY
Inventors: SCHULT, Matthias
SCHLEGEL, Christian
ULMER, Daniel
FLUM, Dominik
Title: WIND TURBINE TEST
Abstract:
A method for testing a wind turbine (12b), the method comprising: supplying an island grid (14), at least one wind turbine (12b) to be tested is connected to, with at least one grid emulating wind turbine (12a), the grid emulating wind turbine (12a) generating electrical energy based on wind energy and the grid emulating wind turbine (12a) being adapted for maintaining a nominal voltage and nominal frequency in the island grid (14), the nominal voltage and nominal frequency being the voltage of a utility grid, which is disconnected from the island grid during testing of the wind turbine (12b) to be tested; controlling the at least one grid emulating wind turbine (12a), such that a test scenario with a different voltage different from the nominal voltage and/or a different frequency different from the nominal frequency is produced in the island grid (14) to simulate a utility grid with a specific fault scenario;controlling the at least one grid emulating wind turbine (12a), such that surplus electrical energy supplied to the island grid (14) by the at least one wind turbine (12b) to be tested is dissipated via a resistive load (40, and/or 42) from the island grid (14) to maintain the different voltage and/or different frequency.