Disclosed are a composite aluminum alloy profile and a preparation method therefor. The composite aluminum alloy profile includes an outer decorative profile, a polyurethane elastomer structural adhesive, and an inner frame profile. The inner frame profile is an integral component of alkali-free glass fibers and polyurethane resin formed by one-time extrusion, and a cross section thereof is “”-shaped; and the outer decorative profile is connected to the inner frame profile through the polyurethane elastomer structural adhesive. The preparation method includes: preparing glass fibers and polyurethane materials of components A and B into a glass fiber resin reinforced profile by a compound strip-threading and injection machine, adhering the inner frame profile to the outer decorative profile through the polyurethane elastomer structural adhesive, and rolling the same. The profile has the features of heat and sound insulation and is easy to produce.

Provided are a feedforward control method, apparatus and control system for a wind turbine. The feedforward control method includes: acquiring, by means of a remote sensing measurement apparatus, inflowing wind information of a plurality of spatial point positions in front of a wind turbine, wherein the plurality of spatial points are distributed in a plurality of different cross sections, and the distances between the plurality of different cross sections and the wind turbine are different; combining the acquired inflowing wind information into a target wind velocity; predicting, on the basis of the combined target wind velocity, incoming flow arrival time required for inflowing wind at a target point to arrive at an impeller plane; and performing feedforward control on the wind turbine according to the predicted incoming flow arrival time.

A computing device includes a fuel price identifying unit that is configured to identify, based on a load plan and information on prediction of weather conditions, a fuel price in a case where motive power of a cooling water cooling device is varied, and a balance identifying unit that is configured to identify, based on the selling price of the generated electric power and the fuel price, at least a balance that is greater than a balance obtained by generated electric power according to the load plan in a case where a current operation is continued.

A high-frequency signal transmission structure capable of transmitting high frequency signals with reduced attenuation includes a first wiring board and a second wiring board. The first wiring board includes a first conductor layer, a second conductor layer, and a first base film layer sandwiched between the first conductor layer and the second conductor layer. The second wiring board includes a second base film layer and a third conductor layer. the second base film layer covers the surface of the first conductor layer facing away from the first base film layer. The first base film layer and the second base film layer surround the first conductor layer and both include an aerogel film layer having an air to gel ratio by volume of 80-99%. A method for manufacturing the high-frequency signal transmission structure is also disclosed.

A coaxial cable is composed of a conductor, an electrical insulating member covering a periphery of the conductor, a shield layer covering a periphery of the electrical insulating member, and a sheath covering a periphery of the shield layer. The shield layer is configured to include a lateral winding shielding portion with a plurality of metal wires being helically wrapped around the periphery of the electrical insulating member, and a batch plating portion made of a hot-dip plating covering respective peripheries of the lateral winding shielding portion. The shield layer includes an outer peripheral portion, in which the metal wires are covered with the batch plating portion, and an inner peripheral portion, in which the metal wires are not covered with the batch plating portion. The outer peripheral portion of the shield layer includes intermetallic compounds between the metal wires and the batch plating portion.

A method for feeding electric power into an electric supply network using a wind park having wind power installations is provided. An expected power is determined for a predetermined feed-in period, where the expected power indicates a power value or temporal profile of power expected to be available to the park as power from wind in the predetermined feed-in period. An expected accuracy is determined and is a measure of how accurately the power reaches the expected power in the feed-in period. To determine the expected power, at least one expected wind variable representative of the expected wind speed is determined using a weather forecast, and the expected wind variable is additionally determined or verified, proceeding from the weather forecast, using a correction rule based on local weather data and/or operating data of the park. The expected power is determined on the basis of the expected wind variable.

A method and apparatus for controlling power production. In one embodiment, the method comprises determining a predicted weather event; determining a predicted power production impact for a distributed generator (DG) array based on the predicted weather event; and controlling power production from one or more components of the DG array to compensate for the predicted power production impact.

An apparatus attached to the underside of a barge, a boat, a ship, a buoyant marine structure, and/or the like may include a plurality of conduits. A configuration of the plurality of conduits may increase the velocity of water moving, for example, at a high velocity due to the buoyant force (upward force) under the barge, the boat, the ship, the buoyant marine structure, and/or the like. The water, due to the increased velocity, may cause a plurality of hydroelectric generators to produce a vast amount of electricity and/or power.

The present disclosure provides a method and an apparatus for self-adaption of a cut-out strategy. The method may include: predicting, using a wind speed prediction model, a wind resource parameter of a wind turbine at each machine location; predicting, using a load prediction model, a fatigue load and a limit load of the wind turbine based on the predicted wind resource parameter and an air density; comparing the predicted fatigue load and limit load with a reference load; and determining the cut-out strategy based on a result of the comparison, wherein determining the cut-out strategy includes determining a cut-out wind speed and an output power.

A highly insulated house, wherein on the basis of current technology of house insulation, a connecting structure with function of thermal-break bridge is set between the door and window's outer frame and the house's frame and external wall, and in the multiple-layered insulating structure of the house there is set a structure of wooden insulating bars or plastic insulating bars filled with insulating fiber, also there is set a fastener with function of thermal-break bridge, thus the overall insulation performance of the house is further boosted; wherein overlapping water boards are set between the multiple-layered insulating blocks of the external wall and roof, and water-proofing insulating blocks are set at the house frame, thus more convenient water-proofing is realized; wherein adhesive tape and insulating plate are set at the inner side of the insulating blocks of external wall and roof, so more convenient air-sealing is realized; wherein insulating structures of thin film with the multiple-layered connection, and with the block-connection by manual sticking or welding, with the automatic block-connection by direct molding, or by flat brim addition, by straight brim addition, by web-shaped addition—are used, thus for a house already built as well as a new house realization of high insulation is convenient and fast.