Joint dispatching method for fast frequency response parameters of grid-constructing or grid-following wind power stations

By constructing a system frequency spatiotemporal dynamic model and using the collocation method for discretization, the virtual inertia and damping coefficient of wind farms are optimized, solving the dynamic coordination problem of frequency regulation after large-scale new energy grid connection. This achieves a balance between frequency security and economy, and avoids the risk of wind turbine disconnection from the grid.

CN122137026APending Publication Date: 2026-06-02NORTH CHINA ELECTRIC POWER UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTH CHINA ELECTRIC POWER UNIV
Filing Date
2026-03-03
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively coordinate control parameters for different types of wind farms after large-scale integration of new energy sources into the grid, adapting to the dynamic changes in grid frequency regulation needs. Furthermore, they neglect the uncertainties of wind and solar resources and the dynamic evolution of control methods, making it difficult to balance frequency security and economic efficiency.

Method used

A system frequency spatiotemporal dynamic model based on differential algebraic equations is constructed and solved by discretization using the collocation method. Combined with the energy and power reserve model of wind turbine, the spatiotemporal frequency distribution characteristics are explicitly characterized, and the virtual inertia and damping coefficient are optimized to ensure the physical feasibility of the control strategy and the safety of local frequencies.

Benefits of technology

It enables rapid frequency response parameter optimization for wind farms under dynamically changing grid conditions, ensuring local frequency security and economy, avoiding the risk of wind turbine disconnection, and improving the frequency regulation capability of the power grid.

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Abstract

The application provides a kind of network or follow network type wind power station fast frequency response parameter joint scheduling method, belongs to wind power technical field. Specifically includes the following steps: S1. the coupling model construction of station energy or power reserve and fast frequency response parameter;S2. the system frequency space-time response model construction based on structure reservation model;S3. the discrete solution of system dynamic model based on collocation method;S4. the objective function and constraint condition construction of joint scheduling model. The application constructs the quantitative mapping relationship between wind speed, rotor speed and virtual inertia, damping coefficient of fan, solves the problem that parameter configuration of traditional method may cause fan off-grid. The frequency space-time dynamic model discretization processing technology based on collocation method realizes the accurate description of local frequency safety. A kind of multivariable joint scheduling framework is proposed, which breaks the limitation of traditional scheduling only focusing on power distribution.
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