| Patent application number | Description | Published |
|---|
| 20100148508 | CONTROL METHOD AND APPARATUS - A method and a controller for controlling a wind power generation system is disclosed. The system is connected to a grid at a point of connection, and is devised to feed reactive power to the grid in order to improve grid stability. A Q-V characteristic is determined for the grid at the point of connection as well as a nose point for the Q-V characteristic. A minimum reactive current, I | 06-17-2010 |
| 20100235119 | LOGICAL SCHEME FOR SEVERE FAULT DETECTION - The present invention relates to a method for determining location of faults in a wind power plant comprising a first plurality of wind turbines arranged in n groups, each group comprising m | 09-16-2010 |
| 20100274401 | METHOD FOR CONTROLLING A COMMON OUTPUT FROM AT LEAST TWO WIND TURBINES, A CENTRAL WIND TURBINE CONTROL SYSTEM, A WIND PARK AND A CLUSTER OF WIND PARKS - The invention relates a method for controlling a common output from at least two wind turbines comprising the steps of receiving at a central wind turbine control system at least one set point value of a set point parameter from a utility grid operator, and at least one operational value of a operational parameter from at least one of said wind turbines Furthermore the method comprises the steps of stablishing a cost function equation comprising at least one function variable reflecting an operational parameter of said wind turbines and said received set point parameter, solving the cost function equation with respect to said at least one function variable to find an extremum for said cost function, calculating weighted operational parameter set points for each of said wind turbines from the obtained solution, and controlling at least one of said wind turbines in relation to said weighted operational parameter set points. The invention also relates to a central wind turbine control system, a wind park and a cluster of wind parks. | 10-28-2010 |
| 20100332040 | CURRENT CONTROL OF A WIND PARK - A method for controlling a current in a wind park is provided. The wind park includes at least one wind turbine and at least one current generator. The method includes detecting a grid irregularity, determining an optimal current to be provided at a predetermined location in the wind park during the grid irregularity and determining a corresponding current to be generated from the at least one current generator so as to provide the optimal current at the predetermined location. The corresponding current is determined based on at least an impedance value between the at least one current generator and the predetermined location. | 12-30-2010 |
| 20110148114 | Method and System for Operating a Wind Power Plant Comprising a Number of Wind Turbine Generators - This invention relates to a method and a system for operating a wind power plant ( | 06-23-2011 |
| 20110153099 | METHOD AND SYSTEM FOR CONTROLLING A WIND POWER PLANT COMPRISING A NUMBER OF WIND TURBINE GENERATORS - This invention relates to a method and a system ( | 06-23-2011 |
| 20110184572 | Method for Setting an Output Voltage level of a Wind Power Plant - The present invention addresses the problem of avoiding that wind turbine voltage levels within a wind power plant do not exceed predetermined overvoltage and/or undervoltage protection levels. In particular, the present invention relates to shifting of an output voltage level of a wind power plant in order to protect an internal power plant grid against overvoltages. | 07-28-2011 |
| 20110260739 | Method and System for Testing Wind Turbine Plants - The present invention relates to a method and a system for on-site and full-scale testing of wind turbine plants. In particular, the present invention relates to a method and a system applying resonance circuits tuned with the fundamental frequency, or harmonics thereof, of a power supply grid connected to a wind turbine plant to be tested. The wind turbine plant to be tested may remain connected to the power supply grid during on-site and full-scale testing. | 10-27-2011 |
