Patent application number | Description | Published |
20090033096 | METHOD FOR THE DETERMINATION OF A CONTROL RESERVE AND WIND ENERGY PLANT WITH A CONTROL UNIT FOR THE DETERMINATION OF THE CONTROL RESERVE - A method for the determination of a control reserve of one or plural wind energy plants, for the operation of which a desired value for at least one electric variable is preset, and for which a control unit is provided which has a power curve, which contains a maximum value of the electric variable depending on values of the wind, the method having the following steps: the control unit determines a maximum value of the electric variable from the actual value of the wind and subtracts a current value of the electric variable from the same, the control unit transmits the determined maximum value and/or the difference as a control reserve to a higher order control unit and/or an external utility. | 02-05-2009 |
20090033097 | WIND PARK WITH A PLURALITY OF WIND ENERGY PLANTS AND METHOD FOR THE OPERATION OF THE WIND PARK - A method for the operation of a wind park with a plurality of wind energy plants, which each one have one control unit at a time, which can control and/or adjust the wind energy plant in response to a received desired value for an electric variable, the method having the following steps: a higher order control calculates and/or receives a currently permitted maximum value for the electric variable which the wind park is allowed to provide, the higher order control determines a desired value for the electric variable for each wind energy plant and forwards the same to the wind energy plants, characterised in that the higher order control determines the desired value for each one of the wind energy plants depending on the currently maximum and/or minimum available values of all the wind energy plants. | 02-05-2009 |
20090033313 | METHOD AND APPARATUS FOR DETERMINING A CHARACTERISTIC CURVE FOR AN ELECTRIC VARIABLE OF A WIND ENERGY PLANT - The present invention is related to a method for determining a characteristic curve ( | 02-05-2009 |
20090140704 | METHOD FOR THE OPERATION OF A WIND ENERGY PLANT WITH VOLTAGE-DEPENDENT CONTROL OF A REACTIVE ELECTRIC VARIABLE WHICH IS TO BE PROVIDED - A method for the operation of a wind energy plant, with control of a reactive electric variable which is to be provided, wherein a desired value for the reactive electric variable is determined as follows: a first upper and/or a first lower limit value of the grid voltage is defined for the grid voltage, when the real value of the grid voltage exceeds the first upper limit value and/or the real value of the grid voltage falls below the first lower limit value, the desired value of the reactive electric variable is increased or diminished such that the deviation of the real value of the grid voltage from its desired value is counter-acted, wherein the desired value of the reactive electric variable is continuously increased or diminished further over the time, as long as the real value of the grid voltage exceeds the first upper limit value or falls below the first lower limit value. | 06-04-2009 |
20090212566 | METHOD FOR OPERATING A WIND ENERGY PLANT AND WIND ENERGY PLANT - The invention relates to a method for operating a wind energy plant, the wind energy plant having a rotor with at least one rotor blade which has an adjustable pitch angle, the wind energy plant having a generator coupled to the rotor, and a regulation means which, if a there is a deviation of the rotation speed of the generator or rotor from a rotation speed set point, adjusts the pitch angle of the at least one rotor blade such that the rotation speed set point is reached again, wherein an electrical quantity provided by the wind energy plant by means of a generator and fed into a grid is reduced to a predetermined value in a short time by a reduction of a preset value for the generator, wherein prior to the regulation means noticing a deviation of the rotation speed of the rotor or generator from the rotation speed set point effected by the reduction of the preset value, an adjustment of the at least one rotor blade to a new pitch angle is initiated, wherein at the new pitch angle the rotation speed of the rotor or the generator reaches the rotation speed set point at the reduced electrical quantity and the current wind speed. In addition, the invention relates to a wind energy plant. | 08-27-2009 |
20090309360 | METHOD FOR CONTROLLING A WIND ENERGY PLANT - The present invention is related to a method for controlling a wind energy plant with plural control units, which perform control tasks in the wind energy plant, comprising the following steps:
| 12-17-2009 |
20090309361 | METHOD FOR CONTROLLING A WIND ENERGY PARK - The present invention is related to a method for controlling a wind energy park with plural wind energy plants and plural control units, which perform control tasks in the wind energy park, comprising the following steps:
| 12-17-2009 |
20100191384 | METHOD FOR THE OPERATION OF A WIND FARM - A method for the operation of a wind farm having two or more wind energy plants, which has a farm control which presets a desired value for an electric variable of the wind farm which has to be generated, wherein the farm control calculates an average increase of the real values of the electric variable for at least one time interval continuously, and compares it with a maximum value for the increase of the electric variable in the respective time interval, the farm control determines a proposal of a desired value for each predetermined time interval, based on a real value of the electric variable which was averaged continuously over the time interval, and in the case that the average increase in the at least one time interval is smaller than the maximum value in the corresponding time interval, the farm control determines a new desired value of the electric variable of the wind farm, with a selection of the desired value as the smallest of several proposals for a desired value. | 07-29-2010 |