Wind power plant
The invention concerns a wind power plant comprising a plurality of wind turbines connected to a distribution line; a connection station comprising a plurality of switchgear devices connected to a substation via the distribution line; and, a plurality of power cables connecting the plurality of switchgear devices and the plurality of wind turbines. The plurality of power cables are respectively arranged to connect a single switchgear device of the plurality of switchgear devices and a single wind turbine of the plurality of wind turbines.
1. A wind power plant comprising:
a plurality of wind turbines connected to a distribution line;
a connection station comprising a plurality of switchgear devices connected to a substation via the distribution line; and
a plurality of power cables connecting the plurality of switchgear devices and the plurality of wind turbines such that the plurality of switchgear devices and the plurality of wind turbines are respectively connected in one-to-one relationships and so that the plurality of wind turbines are electrically isolated from one another so that, when one of the plurality of wind turbines is disconnected from the connection station, other ones of the plurality of wind turbines remain connected.
2. The wind power plant of claim 1 , wherein the connection station further comprises a primary switchgear device connecting the plurality of switchgear devices and the distribution line.
3. The wind power plant of claim 1 , wherein at least one wind turbine of the plurality of wind turbines comprises a connection box and wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and the at least one wind turbine via the connection box.
4. The wind power plant of claim 1 , wherein at least one wind turbine of the plurality of wind turbines comprises a switchgear device and wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and the at least one wind turbine via the switchgear device.
5. The wind power plant of claim 1 , wherein the connection station further comprises a step-up transformer connecting the plurality of switchgear devices and the distribution line.
6. The wind power plant of claim 5 , wherein the step-up transformer is rated at 66 kV or greater.
7. The wind power plant of claim 5 , wherein power equipment in the plurality of wind turbines is rated at 36 kV or lower.
8. The wind power plant of claim 5 , wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and a generator of a wind turbine of the plurality of wind turbines such that an AC output from the generator is transferred untransformed to the step-up transformer.
9. The wind power plant of claim 1 , wherein each power cable comprises three cores with a cross-sectional area of 0.000095 m 2 0.00012 m 2 or 0.00015 m 2 .
10. The wind power plant of claim 1 , wherein the connection station further comprises an auxiliary power supply configured to supply power to at least one wind turbine of the plurality of wind turbines.
11. The wind power plant of claim 1 , wherein the wind power plant is an offshore wind power plant and wherein the connection station is located on a floating platform.
12. The wind power plant of claim 1 , wherein the wind power plant is an offshore wind power plant and wherein the connection station is located on a monopile or a jacket comprising three or four anchoring points.
13. The wind power plant of claim 1 , wherein the plurality of power cables each comprise a communication line configured to send control signals to its respective switchgear device.
14. The wind power plant of claim 13 , wherein the communication lines are fibre optic cables.
15. A connection station, comprising:
a plurality of switchgear devices connected to a substation via a distribution line;
a plurality of power cables connecting the plurality of switchgear devices and a plurality of wind turbines, wherein each of the plurality of power cables is respectively arranged to connect a single switchgear device of the plurality of switchgear devices and a single wind turbine of the plurality of wind turbines; and
a step-up transformer connecting the plurality of switchgear devices and the distribution line, and
wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and a generator of a wind turbine of the plurality of wind turbines such that an AC output from the generator is transferred untransformed to the step-up transformer.
16. The connection station of claim 15 , wherein the connection station further comprises a primary switchgear device connecting the plurality of switchgear devices and the distribution line.
17. The connection station of claim 15 , wherein at least one wind turbine of the plurality of wind turbines comprises a connection box and wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and the at least one wind turbine via the connection box.
18. The connection station of claim 15 , wherein at least one wind turbine of the plurality of wind turbines comprises a switchgear device and wherein at least one power cable of the plurality of power cables directly connects a single switchgear device of the plurality of switchgear devices and the at least one wind turbine via the switchgear device.
19. The connection station of claim 15 , wherein the connection station further comprises a step-up transformer connecting the plurality of switchgear devices and the distribution line.
20. A power generation system, comprising:
a plurality of wind turbines connected to a distribution line;
a connection station comprising a plurality of switchgear devices connected to a substation via the distribution line; and
a plurality of power cables arranged in a parallel configuration and connecting the plurality of switchgear devices and the plurality of wind turbines in such a way that the plurality of switchgear devices and the plurality of wind turbines are respectively connected in one-to-one relationships and so that the plurality of wind turbines are electrically isolated from one another so that, when one of the plurality of wind turbines is disconnected from the connection station, other ones of the plurality of wind turbines are not disconnected.