Fault current control parameter identification method for doubly-fed fan
A technology of fault current and doubly-fed wind turbines, which is applied in the direction of motor generator control, electronic commutation motor control, wind power generation, etc., can solve the problems of adverse effects on the stable operation of the power grid, waste of wind power resources, etc., to avoid waste and improve stability Effect
Active Publication Date: 2022-03-11
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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Problems solved by technology
The types of wind turbines used in the market are different. In the actual process of voltage ride-through, the same set of parameters is often used for ride-through control of different types of generators, resulting in waste of wind power resources and adverse effects on the stable operation of the power grid.
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0032] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0033] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combina...
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The invention relates to a doubly-fed fan fault current control parameter identification method. The method comprises the following steps: S1, establishing a doubly-fed fan fault current control model; s2, monitoring the grid-connected point voltage of the wind turbine generator, and obtaining identification data when a low-voltage fault is judged to occur; and S3, based on the obtained identification data, identifying parameters of the fault current control model by adopting an identification algorithm. According to the method, the fault current control parameters of the doubly-fed fan can be acquired, so that low-voltage ride-through control can be performed on different wind turbine generators by adopting different parameters, the waste of wind power resources is reduced, and the operation stability of a power grid is improved.
Description
technical field [0001] The invention belongs to the technical field of grid connection of new energy power generation, and in particular relates to a fault current control parameter identification method of a double-fed fan. Background technique [0002] A high proportion of new energy power generation is the main power source for achieving the dual-carbon goals, and the centralized access of large-scale wind turbines has greatly increased the penetration rate of wind power in the grid. In a power grid with a high wind power penetration rate, when the grid fails, the voltage at the grid-connected point of the wind turbine exceeds the minimum or maximum operating voltage allowed by the wind turbine, causing a voltage failure of the wind turbine, causing a large-scale wind turbine off-grid accident, and seriously threatening the grid Equipment safety affects power transmission capacity. [0003] The voltage faults of wind turbines are divided into low-voltage faults and high-...
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Login to View More IPC IPC(8): H02P21/14H02P9/10H02J3/16H02J3/38
CPCH02P21/14H02P9/102H02J3/16H02J3/381H02J2300/28Y02E10/76Y02E40/30
Inventor 张慧瑜黄霆吴璐阳曾志杰汪寅乔苏清梅张健弋子渊李凌斐鲍国俊李可文陆颖铨陈宁曲立楠高丙团韩烨婷
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD