Patent application number | Description | Published |
20080284172 | Method of start up at least a part of a wind power plant, wind power plant and use of the wind power plant - A wind power plant and a method of start up at least a part of a wind power plant connected to an external grid substantially without any energy delivered from the external grid for the start up is provided. The wind power plant having a plurality of wind turbines and at least one power source connected to at least one of the wind turbines in order to start the wind turbine while isolated from the remaining wind turbines. The started wind turbine may then supply power in order to start further wind turbines. Power may be delivered to the grid from the started wind turbines. | 11-20-2008 |
20110309683 | Electric power control system and electric power facility comprising the electric power control system - An electric power control system is provided. The power control system includes a first node to which a plurality of power production entities are connectable for combining their power output signals as a first power signal, a transformer adapted to transformer the first power signal at the first node to a second power signal at a second node connectable to a load, the second power signal having a higher voltage than the first power signal, at least one capacitor connectable to the first node and/or to the second node, a control unit adapted to control the connection of the at least one capacitor to the first node and/or to the second node such that a power loss caused by transmission loss of the power output signals from the power production entities to the load is minimized. | 12-22-2011 |
20120133133 | Method and System for Controlling an Electric Device of a Wind Turbine - A method for controlling an electric device of a wind turbine is disclosed. The method includes: receiving a state signal of a utility grid electrically connected to the electric device; and controlling an operation of the electric device based on the state signal. Further, a system for controlling an electric device of a wind turbine and a wind turbine are provided. | 05-31-2012 |
20130052010 | Method to control the operation of a wind turbine - A method to control the operation of a wind turbine is provided. According to the method a sound of a bat in the area of the wind turbine is detected. According to the detected sound of the bat in the area of the wind turbine a parameter for the operation of the wind turbine is set. | 02-28-2013 |
20130173073 | WIND TURBINE CONTROLLER AND METHOD FOR CONTROLLING A WIND TURBINE TO PROVIDE REDUNDANCY - A method and a controller for controlling a wind turbine connected to a utility grid are disclosed/ The method includes: detecting whether control data from a central controller are receivable, wherein the central controller is provided for controlling the wind turbine and a plurality of other wind turbines; if it is detected that control data from the central controller are receivable, receiving the control data from the central controller; if it is detected that control data from the central controller are not receivable, receiving the control data from a local controller of the wind turbine; and controlling the wind turbine based on the received control data. | 07-04-2013 |
20130209220 | NOISE REDUCTION CONTROL FOR WIND TURBINES - A method of controlling noise emission from a wind turbine with a rotor blade includes providing wind shear data comprising wind shear values as a function of height over ground, determining an expected noise emission based on the wind shear data and controlling the wind turbine to reduce noise emission from the wind turbine in accordance with the expected noise emission. | 08-15-2013 |
20130277969 | Wind park control system - A wind park control system for controlling wind turbines of a wind park during a plant controller handover is provided. A plurality of plant controllers compute control values on the basis of system input data, which plant controllers are realized to operate in parallel. One of the plant controllers operates as an active plant controller for computing control values for controlling the wind turbines. One further plant controller operates as a standby plant controller. An output means continually issues control values to the wind turbines of the wind park. A handover arrangement for handing over control from the hitherto active plant controller to an operative standby plant controller is provided such that that standby plant controller then assumes the function of active plant controller. Further, a wind park, a method of controlling a wind park, and a method of performing a plant controller handover in a wind park are provided. | 10-24-2013 |
20130332220 | Service planning tool for wind turbines - A method of scheduling a service of a wind turbine is provided. A projected energy production and/or a projected revenue production of a wind turbine over a specific time period is calculated, and a service for the wind turbine during the specific time period based upon the projected energy production and/or the projected revenue production is scheduled. Further, a non-volatile computer readable medium storing a program code executing the method and a service planning tool for wind turbines are provided. | 12-12-2013 |
20140001758 | METHOD AND ARRANGEMENT FOR RESPONDING TO A GRID EVENT, SUCH AS FAST UNDER FREQUENCY COMBINING DEMAND RESPONSE, INERTIAL RESPONSE AND SPINNING RESERVE | 01-02-2014 |
20140100810 | TEST SYSTEM FOR DETERMINING A FREQUENCY RESPONSE OF A VIRTUAL POWER PLANT - Disclosed is a test system for determining a frequency response of a virtual power plant connected to a utility grid and including a plurality of distinct power plants. The test system includes a test sequence module for providing a frequency test sequence. The frequency test sequence includes a set of frequency test values; and an injection unit for injecting values of the frequency test sequence simultaneously to nodes of the virtual power plant. A node of the virtual power plant includes any of: a power production unit of a power plant, a power storage unit of a power plant, a plant controller of a power plant. Further described are a virtual power plant and a method of testing a frequency response of a virtual power plant. | 04-10-2014 |
20140142771 | METHOD OF CONTROLLING A POWER PLANT - A method of controlling a power plant connected at a point of connection to an electricity grid is provided. The power plant includes a power production facility connected to a power storage facility. The method includes determining a reactive power grid demand and/or voltage grid demand of the electricity grid, obtaining operating data for the power plant facilities, computing reactive power and/or voltage references for the power plant facilities on the basis of the grid demands and the operating data, and operating the power plant facilities on the basis of the references such that a net reactive power and/or a net voltage at the point of connection fulfills a grid demand. A plant controller for controlling a power plant is also provided. A power plant including power production facilities connected to power storage facilities, and the plant controller using the method is also provided. | 05-22-2014 |
20140142776 | METHOD OF CONTROLLING A POWER PLANT - A method of controlling a power plant connected at a point of connection to an electricity grid is provided. The power plant includes a renewable power production facility connected to a power storage facility. The method includes determining an active power grid demand of the electricity grid, obtaining operating data for the renewable power production facility and the power storage facility, determining, on the basis of the grid demand and the operating data, active power transfer quantities to be transferred between the renewable power production facility and the power storage facility and/or from the power plant facility to the grid, computing active power references for the facility of the power plant on the basis of the active power transfer quantities, and operating the power plant facility on the basis of the active power references. Further, a plant controller for controlling such a power plant and a power plant are provided. | 05-22-2014 |
20140142779 | METHOD OF CONTROLLING A POWER NETWORK - A method is provided for controlling a power network that includes a plurality of power generation facilities connected to an electricity grid and a plurality of power storage facilities connected to the power generation facilities. The method includes monitoring a production capacity of the power generation facilities, monitoring a storage capacity of the power storage facilities and determining an optimal facility control plan on the basis of the storage capacity and the production capacity. The method further includes operating the power network, according to the facility control plan, to feed power from the power generation facilities into the electricity grid and/or to transfer power from the power generation facilities to the power storage facilities and/or to consume power from the power storage facilities. | 05-22-2014 |
20140327430 | METHOD AND ARRANGEMENT FOR DETERMINING AN ELECTRICAL CHARACTERISTICS AT A REGULATION POINT - A method for determining electrical characteristics at a point of regulation to which plural energy providing/production units are connected via a common node is provided. The electrical characteristics at an output terminal of each of the plural energy providing/production units are measured in order to obtain plural measured electrical characteristics. Circuit configuration information about a configuration of a circuitry connected between the plural energy providing/production units and the point of regulation is obtained. Electrical characteristics at the point of regulation are calculated based on the plural measured electrical characteristics and the circuit configuration information. | 11-06-2014 |
20140375052 | REACTIVE POWER CONTROL DURING LOSS OF COMMUNICATION - A method of operating a wind turbine of a wind park is provided. In a first step a status of a communication connection to a wind park controller is checked. When the status of the communication connection is positive, the wind turbine will be operated in accordance with at least one reference set point received from the wind park controller. When the status of the communication connection is negative, a substitute reference set point will be determined as a function of a present power output of the wind turbine and the wind turbine will be operated in accordance with the substitute reference set point. | 12-25-2014 |
20140375053 | OPERATING A CONTROLLER FOR AN ENERGY PRODUCTION PLANT - A method is provided for operating a controller controlling an energy production plant including plural wind turbines each having an electrical output terminal connected to a common node. The method involves determining that a failure relating to the energy production plant has been overcome; receiving a first signal indicative of an actual value of an electrical quantity at the common node; receiving a second signal relating to a desired value of the electrical quantity at the common node; generating plural reference signals based on an intermediate value between the actual value and the desired value; and supplying the reference signals to the wind turbines, the reference signals controlling the wind turbines with respect to their electrical output at the output terminal such that the intermediate value of the electrical quantity at the common node is achieved. | 12-25-2014 |
20150077155 | MONITORING OF WIND TURBINE PERFORMANCE - A method for monitoring performance of an electricity generating system of a wind turbine is presented. A set of reference data is provided. The set of reference data is indicative of a correspondence between a performance parameter and at least two operational parameters. Measurement values for the performance parameter and the at least two operational parameters are received. The received measurement values and the set of reference data are compared. It is determined whether the measurement values deviate from the reference data. | 03-19-2015 |