公开(公告)号：US20160010626A1

公开(公告)日：2016-01-14

申请号：US14800608

申请日：2015-07-15

Applicant: ALSTOM RENEWABLE TECHNOLOGIES

Inventor： Oriol GOMÍS BELLMUNT ,  Mónica ARAGÜÉS PEÑALBA

IPC: F03D7/04 ,  H02J3/38 ,  G05B15/02 ,  G01R25/00

CPC classification number: F03D7/048 ,  F03D7/00 ,  F03D7/0284 ,  F03D9/257 ,  F05B2240/95 ,  G01R25/005 ,  G05B15/02 ,  H02J3/24 ,  H02J3/386 ,  Y02E10/723 ,  Y02E10/763

Abstract: Method for avoiding voltage instability in an electrical grid of an offshore wind park, the offshore wind park electrical grid being connected at a first end of a high voltage alternating current (HVAC) transmission and the main land electrical grid being connected at a second end of the HVAC transmission, each of the wind turbines being connected to the wind park electrical grid, the method comprises determining a main land phase angle at or near the second end of the HVAC transmission; measuring an individual wind turbine phase angle at one or more wind turbines; determining the difference between each of the measured individual wind turbine phase angles and the main land phase angle; and determining whether the difference between one of the measured individual wind turbine phase angle and the main land phase angle exceeds a threshold phase angle difference.