Abstract: A direct-drive wind farm parameter tuning method and system considering the interaction between generators are provided. The method includes: collecting initial oscillation current of each direct-drive wind turbine port in the direct-drive wind farm; according to collected data, taking period of dominant oscillation mode as the iteration period to calculate the overall farm-grid interaction dynamic energy and parameter tuning index of the direct-drive wind farm in current iteration period; obtaining stability level of the direct-drive wind farm based on the overall farm-grid interaction dynamic energy in the current iteration period; when the system is unstable, the optimization model of key control parameters is established with the minimum value of the parameter tuning index in the current iteration period as the objective function and the range of each key control parameters as the constraint condition to achieve the key control parameters tuning of the direct-drive wind farm.

Abstract: Provided is a method for increasing magnetic induction intensity of soft magnetic metallic materials. The method includes carburizing or carbonitriding the soft magnetic metallic materials with carbon source or a carbonitriding agent by a heat treatment process, to increase the magnetic induction intensity of the soft magnetic metallic materials, wherein the soft magnetic metallic materials are amorphous materials, nanocrystals, silicon steel, or pure iron.

Abstract: The present application relates to a direct-drive wind farm parameter tuning method and system considering the interaction between generators, which belongs to the technical field of wind power generation. It solves the problem that the interaction between generators is not considered in the direct-drive wind farm in the prior art, the system stability level cannot be effectively evaluated online, and parameter configuration is unreasonable.

Abstract: Provided is a method for preparing an amorphous strip master alloy. The method includes: providing an amorphous alloy and cementite Fe3C; and placing the amorphous alloy and the cementite Fe3C in a smelting furnace for smelting treatment to obtain the amorphous strip master alloy, wherein elements constituting the amorphous alloy include Fe element, Si element and B element. An amorphous strip master alloy prepared by the preparation method is also provided.

Abstract: Provided are a control method and a device for active power of a wind power plant cluster. The wind power plant cluster includes wind power plants of m priorities, wherein m is a positive integer. The control method includes: monitoring the consumption capability of a power grid in real time, and determining object active power of the wind power plant cluster according to the consumption capability of the power grid; determining a command active power of the wind power plant within each priority according to the object active power of the wind power plant cluster in a descending order of the priorities; and controlling real active power of the wind power plant within each priority according to the command active power.

Abstract: Provided is a method for preparing an amorphous strip master alloy. The method includes: providing an amorphous alloy and cementite Fe3C; and placing the amorphous alloy and the cementite Fe3C in a smelting furnace for smelting treatment to obtain the amorphous strip master alloy, wherein elements constituting the amorphous alloy include Fe element, Si element and B element. An amorphous strip master alloy prepared by the preparation method is also provided.

Abstract: Provided is a method for increasing magnetic induction intensity of soft magnetic metallic materials. The method includes carburizing or carbonitriding the soft magnetic metallic materials with carbon source or a carbonitriding agent by a heat treatment process, to increase the magnetic induction intensity of the soft magnetic metallic materials, wherein the soft magnetic metallic materials are amorphous materials, nanocrystals, silicon steel, or pure iron.

Abstract: Provided are a control method and a device for active power of a wind power plant cluster. The wind power plant cluster includes wind power plants of m priorities, wherein m is a positive integer. The control method includes: monitoring the consumption capability of a power grid in real time, and determining object active power of the wind power plant cluster according to the consumption capability of the power grid; determining a command active power of the wind power plant within each priority according to the object active power of the wind power plant cluster in a descending order of the priorities; and controlling real active power of the wind power plant within each priority according to the command active power.