Wind turbine primary frequency modulation control method, installation, device and medium

Abstract

The invention discloses a wind turbine primary frequency modulation control method, installation, device and medium. The method includes: when detecting that the operating frequency of the power system exceeds the dead zone setting value, adjusting the frequency of the wind turbine with the rotating speed below 1.2 standard value by proportional differential virtual inertia control to participatein system frequency modulation; obtaining a rotational speed of the wind turbine that participates in system frequency modulation; when detecting that the operating frequency of the power system is within the dead zone setting value, or when the rotational speed of the wind turbine that participates in the system frequency modulation reaches 1.2 times the standard value, the proportional-differential virtual inertia control is exited. The wind turbine is set to operate under maximum power tracking control, which effectively reduces the high frequency problem of the power system connected to the wind turbine group, and reduces the possibility that the power system triggers the third line of defense action of the power grid due to high frequency problems.

Description

technical field [0001] The present invention relates to the technical field of power system analysis, in particular to a primary frequency modulation control method, device, terminal equipment and computer-readable storage medium of a wind turbine. Background technique [0002] When the power system suddenly loses load or the DC transmission channel that supplies power to the non-synchronous system is suddenly blocked, the frequency of the power system will increase. At this time, the primary frequency regulation function of the traditional synchronous generator will play a role to suppress the increase in frequency. However, new energy generators represented by wind turbines are generally connected to the grid through power electronic equipment, which cannot provide the necessary frequency regulation support for the grid. [0003] In the process of realizing the present invention, the inventor found that: if the primary frequency regulation capability of the traditional gen...

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Problems solved by technology

[0002] When the power system suddenly loses load or the DC transmission channel that supplies power to the non-synchronous system is suddenly blocked, the frequency of the power system will increase. At this time, the primary frequency regulation function of the traditional synchronous generator will play a role to suppress the increase in frequency. However, new energy generators represented by wind turbines are generally connected to the grid through power electronic equipment, which cannot provide the necessary frequency regulation support for the grid.

[0003] In the process of realizing the present invention, the inventor found that: if the primary frequency regulation capability of the traditional generator is insufficient, the increase of the system frequency may trigger the action of the third line of defense of the power grid, causing high-cycle cut-off. Therefore, it is necessary to explore the potential of wind turbines The ability of primary frequency regulation can suppress the high-frequency problem of the power grid to ensure the safety and stability of the power system

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