Abstract:
The invention relates to a method for controlling a wind turbine in a non-operational mode, said method comprising the steps of entering the wind turbine via a tower entrance door by personnel, and manually handling at least one interlock device positioned inside the wind turbine in order to gain control of the functionality of the wind turbine switchgear. The invention further relates to a wind turbine (1) for supplying power to a utility grid.
Abstract:
A wind turbine comprising a novel switchgear arrangement is described. The wind turbine includes a tower, a rotor supported at an upper end of the tower, a generator, a transformer for increasing the voltage output of the generator prior to supplying a collector grid, and switchgear arranged between the transformer and the collector grid. The switchgear includes a first switching device associated with the transformer, and a second switching device associated with one or more cables connecting the wind turbine to another wind turbine in the collector grid. The first switching device is connected to, but located remotely from, the second switching device.
Abstract:
The invention concerns a wind power plant 55 comprising a plurality of wind turbines 56a-56d connected to a distribution line 62; a connection station 64 comprising a plurality of switchgear devices 36a-36d connected to a substation 52 via the distribution line 62; and, a plurality of power cables 68a-68d connecting the plurality of switchgear devices 36a-36d and the plurality of wind turbines 56a-56d. The plurality of power cables 68a-68d are respectively arranged to connect a single switchgear device of the plurality of switchgear devices 36a-36d and a single wind turbine of the plurality of wind turbines 56a-56d.
Abstract:
A wind turbine system with a wind turbine having a HV switchgear positioned inside a housing positioned on the ground, external to the wind turbine tower to provide increased safety inside the tower. The housing has a concrete baseframe forming a compartment, and an enclosure part mounted on the baseframe. The blowout of the HV switchgear is connected to the baseframe compartment via an opening in the floor of the enclosure part, and a blowout channel connects the baseframe compartment to a compartment formed between a ceiling and a roof of the enclosure part, and this upper compartment has a blowout opening to the environments, preferably posisioned at least 2 m above ground level. The enclosure part has a door to allow a person to enter the housing, and wall elements of the enclosure part are preferably formed by metal plates. The blowout compartments of the baseframe and upper compartment serve to lower pressure of a blowout, and thus helps to provide a safe blowout output to the environment.
Abstract:
The present invention relates to a wind power plant for feeding power to an external power grid, the wind power plant comprising one or more groups of wind turbine generators, each group comprising a plurality of wind turbine generators operatively connected to a common group switchgear of that group via an internal power grid of that group, and a wind power plant substation operatively connected to the common group switchgear of each of the respective groups, the wind power plant substation further being operatively connected to the external power grid. The present invention also relates to an associated method for operating a wind power plant.
Abstract:
A wind turbine generator (WTG) 1 is connected to the electricity grid 2 by switchgear 3. A control system 8 disconnects the WTG 1 from the grid 2 in the event of a fault and also if the grid voltage falls below its normal value for a predetermined time, to prevent the WTG 1 from being connected when the control system is not functional. A battery 7 supplies power to the control system 8. When the control system 8 is fully functional, the WTG 1 is manually re-connected to the grid 2. Alternatively, the control system 8 enters a "SLEEP" mode during which the grid voltage continues to be monitored. When the grid voltage returns, the control system 8 reverts to its "WAKE" mode and draws sufficient power from the battery 7 to become fully functional, at which point the WTG 1 is re-connected to the grid 2.
Abstract:
A method of constructing an offshore wind power plant comprising: Installing a plurality of offshore foundations in an array; providing containerised switchgear on each of the respective foundations; and connecting the containerised switchgear on the respective foundations to the containerised switchgear on another foundation in the array via electric cables prior to erecting wind turbines on the respective foundations.
Abstract:
A wind turbine generator (WTG) is connected to an electricity grid via a switchgear. A control system disconnects the WTG from the grid in the event of a fault and also if the grid voltage falls below its normal value for a predetermined time, to prevent the WTG from being connected when the control system is not functional. A back-up generator is started manually to recharge a battery and supply power to the control system . When the control system is fully functional, the WTG is manually re-connected to the grid. Alternatively, the control system enters a sleep mode during which the grid voltage continues to be monitored. When the grid voltage returns, the control system reverts to its wake mode and draws sufficient power from the battery to become fully functional, at which point the WTG is re-connected to the grid.
Abstract:
A method of constructing an offshore wind power plant comprising: Installing a plurality of offshore foundations in an array; providing containerised switchgear on each of the respective foundations; and connecting the containerised switchgear on the respective foundations to the containerised switchgear on another foundation in the array via electric cables prior to erecting wind turbines on the respective foundations.