Energy router coordination method and system for new energy station voltage ride-through

By combining dynamic multimodal control and positive and negative sequence current coordinated control with deep reinforcement learning and transient energy function analysis, stable support for new energy power stations under grid voltage faults has been achieved, which solves the shortcomings of traditional control strategies during voltage surges and improves grid stability and equipment safety.

CN122371113APending Publication Date: 2026-07-10THREE GORGES INTELLIGENT CONTROL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610359483.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-23
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional renewable energy power plants cannot effectively support grid voltage during voltage surges, resulting in slower grid voltage recovery, decreased voltage stability, and a lack of adaptive control strategies. This leads to transient overvoltages and bus voltage fluctuations, and may even cause DC bus voltage collapse. They cannot simultaneously meet the dual requirements of overcurrent suppression and reactive power support.

Method used

A dynamic multimodal control strategy is adopted. By collecting the grid connection point voltage to calculate the threshold, a dynamic voltage boundary is constructed. Combined with positive and negative sequence current coordinated control and virtual impedance compensation, and integrating deep reinforcement learning and transient energy function analysis, the adaptive adjustment of the current loop and multi-port energy interaction are realized, and the control parameters are optimized to support the grid voltage.

Benefits of technology

It significantly improves the ride-through performance of new energy power stations under grid voltage faults, balances grid stability and equipment safety, enhances the robustness of the controller and power quality, and avoids system oscillations and control failures.

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Abstract

The application provides a kind of energy router coordination method and system for new energy station voltage ride-through, belongs to the field of power electronics and new energy grid-connected control technology, its method includes, first, the voltage of grid-connected point is collected, the dynamic threshold set is calculated and the hysteresis logic is introduced;Then realize seamless switching of three operating modes according to the threshold, reconstruct power unit;Then decompose voltage and current sequence components, generate positive and negative sequence current instructions and superimpose virtual impedance limiting;Fusion deep reinforcement learning and transient energy function, adaptive setting control parameters;Finally, combined with related instructions, state and parameters, execute multi-port energy interaction dynamic coordination, improve the voltage ride-through performance of new energy station.The application realizes new architecture through dynamic multi-modal control+coordination current limiting support+intelligent adaptive parameter tuning+multi-port collaboration, significantly improves the ride-through performance of new energy station under grid voltage sag / fault, takes into account grid stability and equipment safety, has significant innovation and practical value.
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