A method is provided for installing a jointed rotor blade of a wind turbine. A second section is positioned in a six o'clock position. At least one lifting line is routed through the second section radially inward of an inner surface of the section. A first end of the lifting line is coupled to a first section and a second end of the lifting line is coupled to a power source positioned within at least one of a or a nacelle of the wind turbine. The first section of the jointed rotor blade is lifted toward the second section by driving the lifting line via the power source. The first section and the second section are lined gather at a chordwise joint and coupled at the chordwise joint.

The invention relates to a wind turbine comprising a floating base designed as a semi-submersible, a tower arranged on the floating base, at least two arms extending from the tower, a respective energy conversion unit arranged at the free end of each arm, and a cable system connecting the base to the energy conversion units and connecting the energy conversion units to one another in order to introduce the thrust forces acting on the tower, the arms and the energy conversion units into the base, wherein the cable system has a pre-tensioning, the value of which is greater than the loads to be expected during the operation of the wind turbine and acting against the pre-tensioning.

A method is provided for installing a jointed rotor blade of a wind turbine. A second section is positioned in a six o'clock position. At least one lifting line is routed through the second section radially inward of an inner surface of the section. A first end of the lifting line is coupled to a first section and a second end of the lifting line is coupled to a power source positioned within at least one of a or a nacelle of the wind turbine. The first section of the jointed rotor blade is lifted toward the second section by driving the lifting line via the power source. The first section and the second section are lined gather at a chordwise joint and coupled at the chordwise joint.

A method is provided for installing a jointed rotor blade of a wind turbine. A second section is positioned in a six o'clock position. At least one lifting line is routed through the second section radially inward of an inner surface of the section. A first end of the lifting line is coupled to a first section and a second end of the lifting line is coupled to a power source positioned within at least one of a or a nacelle of the wind turbine. The first section of the jointed rotor blade is lifted toward the second section by driving the lifting line via the power source. The first section and the second section are lined gather at a chordwise joint and coupled at the chordwise joint.

A method ships a wind tower by nesting a plurality of sections of the tower. The plurality of nested sections includes a radially outermost section. Each of the sections has a bottom end configured to be closer to a bottom of the tower, and a top end configured to be closer to a top of the tower. Each of the bottom ends has an internal flange and/or an external flange, and each of the top ends has the other of the internal flange and/or the external flange. The method mounts a removable force distribution fixture to the radially outermost section. The fixture suspends the radially outermost section to form a single shipping unit. The fixture is configured to distribute force along the tower when it is attached to a hinge and tilted up using a force generating member. The shipping unit is configured to ship as a single unit.

A connection system for joining two wind turbine components together includes one or more bearing surfaces and one or more support surfaces extending away from the one or more bearing surfaces on a first wind turbine component, and one or more bearing surfaces and one or more support surfaces extending away from the one or more bearing surfaces on a second wind turbine component. One or more bores are formed in the one or more support surfaces of the first and second wind turbine components. One or more pins are configured to be engaged with respective one or more bores of the first and second wind turbine components to thereby join the two components together. A method for joining two wind turbine components together is also disclosed.

A connection system for joining two wind turbine components together includes one or more bearing surfaces and one or more support surfaces extending away from the one or more bearing surfaces on a first wind turbine component, and one or more bearing surfaces and one or more support surfaces extending away from the one or more bearing surfaces on a second wind turbine component. One or more bores are formed in the one or more support surfaces of the first and second wind turbine components. One or more pins are configured to be engaged with respective one or more bores of the first and second wind turbine components to thereby join the two components together. A method for joining two wind turbine components together is also disclosed.

Provided is a lifting device for a wind turbine component including a yoke for connecting the wind turbine component to a crane, the yoke including at least one anchor point connectable to a forcing system for pushing or pulling the yoke in order to rotate the yoke around a central axis of the yoke. The yoke is configurable in at least a first closed configuration, wherein in the first closed configuration the at least one anchor point is at a first distance from the central axis of the yoke, and at least a second extended configuration, wherein in the second extended configuration the at least one anchor point is at a second distance from the central axis of the yoke greater than the first distance.

Provided is a lifting device for a wind turbine component including a yoke for connecting the wind turbine component to a crane, the yoke including at least one anchor point connectable to a forcing system for pushing or pulling the yoke in order to rotate the yoke around a central axis of the yoke. The yoke is configurable in at least a first closed configuration, wherein in the first closed configuration the at least one anchor point is at a first distance from the central axis of the yoke, and at least a second extended configuration, wherein in the second extended configuration the at least one anchor point is at a second distance from the central axis of the yoke greater than the first distance.

A system receives locations of a plurality of electricity-generating units in an area, and it divides the area into a plurality of sectors. The system traverses through the sectors and forms a set of sectors. The set of sectors includes a set of electricity-generating units. The set of electricity-generating units does not exceed an aggregate voltage threshold. The system forms a circuit with the set of electricity-generating units by determining a shortest path to connect the set of electricity-generating units. The system adjusts this shortest path to incorporate environmental and physical constraints.