Power control of a wind park

US7989974B2 · kind B2 · utility

Assignee

• R E power Systems AG · DE

Inventors

• Jens Fortmann · Berlin, DE
• Jens Altemark · Rendsburg, DE
• Jorg Zeumer · Rendsburg, DE

Key dates

• Filing date: Jul 12, 2006
• Grant date: Aug 2, 2011
• Expiry date: Mar 11, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E40/30
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method for regulating a wind energy installation including a rotor-driven generator, a converter connected to the generator, and a controller that regulates power emitted into an energy transmission system to within a limit value involves determining a maximum current value in a connection path, determining a current reserve value for power emitted into an energy transmission system, and determining a correction value for following a limit value of the emitted power from the maximum current value and the current reserve value. The wind energy installation and the method for its regulation also includes the use of a limitation device configured to set a phase angle between an emitted current and voltage of an electrical system in response to a selection signal in such a way that primarily active power or primarily reactive power is fed into the energy transmission system when the maximum current value is reached.