Self-synchronization control method and system for wind power converter

CN119628044AActive Publication Date: 2025-03-14HUANENG ZHAOJUE WIND POWER CO LTD
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Patent Information

Application Number
CN202411520598.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-29
Publication Date
2025-03-14
Estimated Expiration
2044-10-29

AI Technical Summary

Technical Problem

It is difficult to take into account the effects of inertial response and differential mode oscillation damping, resulting in poor stability of the power system.

Method used

By obtaining the wind speed data of the wind turbine in the preset period, determining the current optimal fan speed, and establishing a self-synchronous control strategy of the converter in combination with the damping power. At the same time, the self-synchronous control strategy is corrected based on the voltage data of the wind turbine after self-synchronous control.

Benefits of technology

It effectively improves the inertial response capability of the wind turbine and ensures the safe and stable operation of the power system.

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Abstract

The invention relates to the technical field of converter control, and discloses a self-synchronization control method and system for a wind power converter, and the method comprises the steps: obtaining the wind speed data of a wind turbine generator set in a preset period, and determining the current optimal fan rotation speed according to the wind speed data of the wind turbine generator set in the preset period; the damping power of the wind turbine generator is calculated, and a converter self-synchronization control strategy is determined according to the damping power of the wind turbine generator and the current optimal fan rotating speed; and acquiring voltage data of the wind turbine generator after self-synchronization control, and correcting the self-synchronization control strategy of the converter according to the voltage data of the wind turbine generator after self-synchronization control. The self-synchronization control strategy of the converter is obtained based on the model through the damping power and the rotating speed of the wind turbine generator, the inertia response of the wind turbine generator can be effectively improved, and safe and stable operation of a power system is guaranteed.
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Citation Information

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