Park micro-grid cluster multi-source collaborative hierarchical power control system and control method

By building a multi-source collaboration of the park microgrid cluster, and using a star network topology and dynamic weight allocation algorithm, the problem of absorption and stable power supply of high proportion of renewable energy in the park power supply and consumption system is solved, dynamic power balance and frequency voltage stability are achieved, and the light and wind rate and energy consumption cost are reduced.

CN120454203APending Publication Date: 2025-08-08NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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Patent Information

Application Number
CN202510893612.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

The existing power supply and consumption systems in the park are facing problems such as the contradiction of disposal of distributed power supplies, frequent wind and light abandonment, extreme seasonal power consumption constraints, insufficient power supply reliability of important loads, limited economic and compatibility of system transformation, and deepening contradiction between electricity price mechanism and energy consumption costs, and it is difficult to achieve effective absorption and stable power supply of high proportions of renewable energy.

Method used

Build a multi-source collaboration hierarchical power control system for park microgrid clusters, adopt a star network topology structure, and through the collaborative control of the microgrid cluster energy management system and the sub-microgrid energy management system, combined with dynamic weight allocation algorithm and safety constraint rolling optimization, multi-source collaborative optimization and refined power regulation are achieved.

Benefits of technology

It improves the power dynamic balance and frequency voltage stability of the park's microgrid, reduces the light and wind rate, extends the battery life of the energy storage cluster, reduces the grid loss rate, and realizes the reduction of the comprehensive energy consumption cost of the park and the efficient absorption of new energy.

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Abstract

The invention relates to the technical field of power distribution networks, in particular to a park micro-grid cluster multi-source collaborative hierarchical power control system and control method, and the control system comprises a micro-grid cluster energy management system which is used for managing a micro-grid cluster; the micro-grid cluster energy management system comprises a plurality of sub-micro-grid energy management systems for managing sub-micro-grids; the micro-grid cluster is of a star-shaped network topological structure comprising a plurality of levels and comprises a plurality of sub-micro-grids, and each sub-micro-grid comprises a photovoltaic cluster, a fan cluster, an energy storage cluster and a flexible load cluster; the sub-microgrid energy management system obtains operation data of each sub-microgrid; the micro-grid cluster energy management system formulates a partition power distribution strategy based on the operation data of each sub-micro-grid; and the sub-microgrid energy management system carries out power distribution on each level of the corresponding sub-microgrid based on a partition power distribution strategy. Dependence on the power grid is reduced, and safe and stable operation of the frequency voltage of the park microgrid cluster is guaranteed.
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