Multi-source coordination control method and system for integrated energy system

A comprehensive energy system, coordinated control technology, applied in information technology support systems, power network operating system integration, AC network voltage adjustment, etc., can solve problems such as load or power over-cut, DC system disturbance, etc.
CN112688369APending Publication Date: 2021-04-20STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
Publication Date
2021-04-20

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Abstract

The invention discloses a multi-source coordination control method and system for an integrated energy system, and belongs to the technical field of intelligent power grids. The method comprises the following steps: determining that an operation state is in a power imbalance state; determining the current output and the output margin of an energy storage unit in the integrated energy system, wherein the current output and the output margin cannot adjust the power to a balance state; obtaining forward and reverse deviations allowed by the power vacancy; determining a switchable load of the integrated energy system or a power range of a power supply; and completing multi-source coordination control of the integrated energy system according to the power range of the switchable load or the power supply. According to the invention, the problems of certain over-switching, insufficient flexibility and the like of the existing load shedding method are solved, the over-switching amount of the system can be effectively reduced, the economy of load control is improved, and the influence of frequent switching of the load or the power supply on the stability of the system is avoided.
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Description

technical field

[0001] The present invention relates to the technical field of smart grids, and more specifically, to a multi-source coordinated control method and system for an integrated energy system. Background technique

[0002] Using micro-grid technology as a carrier, building a multi-source coordinated integrated energy system is a feasible way for future small-scale energy systems. During the island operation period of the system, the distributed power generation output inside the micro-grid may vary with the external environment (such as sunshine intensity, Wind power, weather conditions) change, which makes the voltage fluctuation inside the DC microgrid very large. Therefore, it is necessary to monitor the change of the internal voltage of the DC microgrid at any time, and take measures to deal with the safety and stability of the microgrid due to sudden changes in internal power supply or load power. impact.

[0003] Conventional power coordination control sche...

Claims

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