发明名称 |
Method for controlling power flow within a wind park system, controller, computer program and computer program products |
摘要 |
A method is provided for controlling power flow within a wind park system for power transmission to a main power grid, the wind park system including two or more parallel-connected island wind park grids. The method includes the steps of: controlling a first voltage source converter as a swing bus in frequency control, the frequency control including controlling frequency to a steady state reference operating point for operating points within a power dead band and by frequency droop control when exceeding an end point of the power dead band, and controlling at least a second voltage source converter in power control, the power control including controlling power flow to a steady state reference operating point for operating points within a frequency dead band and by power droop control when exceeding an end point of the frequency dead band. A controller and computer program product are also provided. |
申请公布号 |
US8946917(B2) |
申请公布日期 |
2015.02.03 |
申请号 |
US201114127874 |
申请日期 |
2011.06.20 |
申请人 |
ABB Technology AG |
发明人 |
Holmberg Per;Jiang-Häfner Ying;Juhlin Lars-Erik |
分类号 |
F03D9/00;H02P9/04 |
主分类号 |
F03D9/00 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A method for controlling power flow within a wind park system for power transmission to a main power grid, the wind park system comprising two or more parallel-connected island wind park grids, each island wind park grid comprising a wind park with at least one wind turbine, the wind park being connected to an AC bus, in turn connected to a voltage source converter arranged to feed power to the main power grid by means of a direct current transmission line, the method comprising the steps of:
controlling a first voltage source converter as a swing bus in frequency control, the frequency control comprising controlling frequency to a steady state reference operating point for operating points within a power dead band and by means of frequency droop control when exceeding an end point of the power dead band, and controlling at least a second voltage source converter in power control, the power control comprising controlling power flow to a steady state reference operating point for operating points within a frequency dead band and by means of power droop control when exceeding an end point of the frequency dead band. |
地址 |
Zurich CH |