An offshore power distribution system includes first cables each having a first dry mate connection at a first end and each connecting to an offshore power generator unit at a second end, a subsea junction box at a sea floor, a second cable extending from the junction box to a subsea transformer station at the sea floor and connecting with the transformer station, and a third cable extending from the transformer station to an onshore receiver. Each first dry mate connection terminates in the junction box. The second cable has a second dry mate connection at an end thereof. The second dry mate connection terminates inside the junction box and is operatively connected to each first dry mate connection. The power distribution system is configured to transmit electric power from the power generator unit, via the first cables, the second cable, and the third cable, to the receiver.

The present disclosure relates to a wind turbine comprising a wind turbine rotor with a plurality of blades supported on a support structure, a generator operatively coupled to the wind turbine rotor for generating electrical power, a power electronic converter for converting electrical power generated by the generator to a converted AC power of predetermined frequency and voltage, and a main wind turbine transformer having a low voltage side and a high voltage side for transforming the converted AC power to a higher voltage. One or more electric filters are connected to the high voltage side of the main transformer, wherein the electric filters are arranged in the support structure. The present disclosure also relates to wind farms, and particularly offshore wind farms, and to methods for operating wind farms.

Improvements relating to wind turbine blades A wind turbine blade is described that comprises a main blade and one or more separate edge modules attached to the main blade module. The main blade module defines a main body of the blade, and the separate edge module(s) defines at least part of a leading edge or a trailing edge of the blade. A down conductor for a blade lightning protection system is embedded within the edge module.

A wind turbine includes a tower composed of a plurality of tower sections, and an upper section on top of the tower. The upper section has a nacelle and a rotor with rotor blades. The rotor is attached to the nacelle. The rotor blades are rotatable by wind around a horizontal rotor axis to drive a generator . The wind turbine includes a HV cable arrangement laid in the tower connecting a first HV component in the nacelle and a second HV component in a wind turbine tower bottom or foundation. The HV cable arrangement is divided into cable arrangement segments corresponding to the plurality of tower sections, where respective two of the cable arrangement segments are connected via a cable connection device such that the plurality of cable arrangement segments is connected in series to constitute the HV cable arrangement. The cable connection device includes a plate-based shielding.

Wind turbine installation (1) comprising a tower (2), a nacelle (3), —a liquid immersed power electrical device (6) having an expansion vessel (7), an air dehydrating breather (8) comprising a moisture absorbing agent (9), and a conduit (10) fluidly connecting the expansion vessel (7) and the air dehydrating breather (8), wherein the wind turbine installation (1) comprises a barrier (11) separating a restricted zone (12) from a non-restricted zone (13) in said wind turbine installation (1), wherein the electrical device (6) is located in the restricted zone (12), wherein the air dehydrating breather (8) is located in the non-restricted zone (12) and wherein the conduit (10) extends through the barrier (11) and a method of maintaining a wind turbine installation (1).

A pitch energy module comprising one or more ultracapacitors storing electrical energy for a wind turbine emergency pitch energy event. The pitch energy module replaces at least one battery within a battery housing of a wind turbine and interfaces with the existing battery wiring harness to communicate with a control system of the wind turbine. The pitch energy module is installed without further modification to the battery housing or the battery wiring harness.

A pitch energy module comprising one or more ultracapacitors storing electrical energy for a wind turbine emergency pitch energy event. The pitch energy module replaces at least one battery within a battery housing of a wind turbine and interfaces with the existing battery wiring harness to communicate with a control system of the wind turbine. The pitch energy module is installed without further modification to the battery housing or the battery wiring harness.

A tower for a wind turbine is disclosed, said wind turbine comprises the tower, a nacelle and a rotor having at least one rotor blade. The tower is configured for supporting the nacelle and the rotor on a support system. The tower itself may be structured as having an upper top end for supporting the nacelle and a lower support end for being placed on the support system. Electric energy generated is transported via power cables from the nacelle to an electric grid, preferably via power electronic components, switches and/or transformers. Furthermore, the nacelle may rotate around the yaw axis according to the current wind direction. Hence, the rotation of the nacelle introduces a twist into the power cables, wherein said twist causes a deviation (shortening) in the length of the power cables. Furthermore, the tower comprises at least one radial cable guiding device for receiving the cable and a cable support arrangement for supporting the cable in a beneficial manner. Additionally, the tower comprises anti-torsion fixation means configured for reducing and/or preventing a propagation of a cable twist of the cables of a hanging portion into power cables of a loop portion. The power cables comprise a hanging portion having a cable axis, a cable loop portion having a horizontal cable loop, and the supported portion being at least partially supported by the cable support arrangement.

An air blower includes an impeller, a motor, a lead wire, and a casing. The impeller rotates around a central axis extending in a vertical direction. The motor rotates the impeller. The lead wire is connected to the motor. The casing houses the impeller and the motor. The casing includes a bottom plate portion, a side wall portion, and a top plate portion. The top plate portion is disposed axially above the impeller and is connected to the upper end of the side wall portion. The casing includes a lead-out port through which the lead wire is led out to the outside in the radial direction. The lead-out port includes a lower portion provided on the bottom plate portion and an upper portion provided on the side wall portion, and the lower and upper portions are defined by different members.

A cable holder, in particular for a cable of a wind turbine, to a cable harness, to a tower, to a wind turbine and also to a method for fastening a cable. In particular, a cable holder, in particular for a cable of a wind turbine, preferably for a medium-voltage cable connected to a medium-voltage transformer of a wind turbine, comprising a cable mount with a funnel-like cavity and also comprising an elastic insert, which is arranged within the funnel-like cavity, wherein the cable mount and the elastic insert are arranged and designed such that the cable can extend through the funnel-like cavity and the elastic insert can be clamped in between the cable mount and the cable.