公开(公告)号：US09124134B2

公开(公告)日：2015-09-01

申请号：US14375771

申请日：2013-02-14

Applicant: ALSTOM RENEWABLE TECHNOLOGIES

Inventor： Oriol Gomis Bellmunt ,  Mónica Aragüés Penñalba

IPC: H02J3/24 ,  F03D7/04 ,  F03D9/00 ,  H02J3/38 ,  F03D7/02 ,  F03D7/00

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.

Abstract translation: 一种用于避免海上风电场的电网不稳定的方法，所述海上风电场电网在高压交流（HVAC）传输的第一端连接，并且所述主接地电网在第二端 HVAC传输，每个风力涡轮机连接到风力发电场电网，所述方法包括确定HVAC变速器的第二端处或附近的主地面相位角; 测量一个或多个风力涡轮机上的单个风力涡轮机相位角; 确定每个测量的单个风力涡轮机相位角和主地面相位角之间的差; 并且确定所测量的各个风力涡轮机相位角中的一个与所述主平台相位角之间的差是否超过阈值相位角差。