Power optimization scheduling-based microgrid energy storage system state consistency control method

An energy storage system and power optimization technology, applied in AC network circuits, AC network load balancing, single-network parallel feeding arrangements, etc., can solve the problems of overcharging and overdischarging of energy storage units, failure to guarantee the operation of energy storage units, and economic losses Issues affecting the safe and stable operation of the system
CN110365052AActive Publication Date: 2019-10-22NORTHEASTERN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NORTHEASTERN UNIV
Publication Date
2019-10-22

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Abstract

The invention discloses a power optimization scheduling-based microgrid energy storage system state consistency control method, which belongs to the technical field of control of the microgrid energystorage system. The method adopts time-of-use price, new energy prediction output and energy storage unit battery pack state of energy SOE to determine an energy storage unit operation strategy on thebasis of considering energy storage charge and discharge efficiency and ensuring system active power balance, and considers an energy storage unit battery pack state of energy SOE imbalance problem and time-varying energy storage unit power charge and discharge bearing capability SOP, and a microgrid energy storage system power balance model is built; and besides, through a consistency protocol,energy storage units SOH and SOE are ensured to be consistent, the application performance of the energy storage unit in the energy storage system is improved, the overall charge and discharge times of the energy storage system is effectively reduced, and the service life is improved.
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Description

technical field

[0001] The invention relates to the technical field of control of a microgrid energy storage system, in particular to a state consistency control method for a microgrid energy storage system based on power optimization scheduling. Background technique

[0002] The microgrid can operate in the grid-connected mode and the island mode. In the island mode, how to ensure power balance and how to make it work in the most efficient way have become the key issues to be solved at present. Because wind energy and solar energy are abundant and clean, they are currently the most Promising new energy technologies, however, their volatility and uncontrollability also bring new challenges to microgrid control. The MPPT algorithm emphasizes the high utilization rate of new energy, but when the power generation of new energy is not equal to the load consumption, it will lead to an imbalance between supply and demand. The application of energy storage system in microgrid can ...

Claims

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