Electricity-heat-hydrogen combined microgrid power fluctuation stabilizing method with synergism of hydrogen storage, heat storage and electricity storage

By employing bidirectional feedback dynamic filtering and adaptive dead-zone control in the electrothermal-hydrogen combined microgrid, coordinated control of the hydrogen storage system, heat pump, thermal storage tank, and battery was achieved, solving the problems of fine-grained allocation of power fluctuations across the entire frequency band and equipment life protection, thus improving the stability and reliability of the system.

CN122267766APending Publication Date: 2026-06-23CHINA UNIV OF MINING & TECH
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Patent Information

Application Number
CN202610285646.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-10
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies lack a refined three-level collaborative allocation strategy for full-band power fluctuations in electrothermal-hydrogen combined microgrids, resulting in poor cross-level collaboration, shortened battery life, and inability to achieve dynamic mutual assistance under extreme conditions.

Method used

By employing a bidirectional feedback dynamic filtering mechanism and adaptive dead-zone control, and through the coordinated control of the hydrogen storage system, heat pump, thermal storage tank, and battery, it achieves refined smoothing of low-, medium-, and high-frequency bands, and realizes dynamic mutual assistance and life protection between equipment under extreme conditions.

Benefits of technology

It achieves efficient suppression of power fluctuations across the entire frequency band, protects battery life, improves system stability and reliability, avoids equipment overload, and enhances the overall suppression effect of the system.

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Abstract

The invention discloses an electricity, heat and hydrogen combined microgrid power fluctuation stabilizing method with cooperation of hydrogen storage, heat storage and electricity storage. A two-stage low-pass filter for dynamically adjusting parameters lambda L and lambda M is adopted to decompose net fluctuation power into low-frequency components, medium-frequency components and high-frequency components, and the low-frequency components, the medium-frequency components and the high-frequency components are correspondingly distributed to a hydrogen storage system HSS, a heat pump HP and a storage battery BESS respectively. And the HSS and the HP output are subjected to soft cut-off correction according to the states of the HSS and the HP and the heat storage tank. The BESS processes high frequency and upstream transfer fluctuations, and introduces an adaptive dead zone and bidirectional protection mechanism: when the BESS state exceeds a limit or deviates from a golden interval, part of fluctuations are forcibly transferred to an upstream HSS by reducing lambda L through feedback, or a dead zone is utilized to filter micro-actions to protect life. According to the method, through full-band soft cut-off decoupling and upstream and downstream bidirectional help-seeking feedback, the combined regulation potential of heterogeneous multi-energy equipment is effectively released.
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