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Control method to balance microgrid mismatch power by aid of distributed storage battery energy storing stations

A distributed energy storage and control method technology, applied in the field of distributed control, can solve problems such as power grid collapse, influence on voltage and frequency stability, loss of interests of users and power generators, etc., and achieve good convergence and high efficiency

Active Publication Date: 2013-12-04
JIANGSU OLITER ENERGY TECH
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Problems solved by technology

Due to the small inertia of the microgrid itself, the mismatched power will more significantly affect the voltage and frequency stability, and even cause the grid to collapse
In the traditional control scheme, abandoning part of the distributed generation or cutting off part of the load energy is almost the only way to solve this problem, but it loses the interests of users and generators

Method used

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  • Control method to balance microgrid mismatch power by aid of distributed storage battery energy storing stations

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0023] This method uses the energy management system (Energy Management System) on the microgrid side as the coordinator in the optimization calculation to provide coordination information for the sub-controllers on the side of each distributed lead-acid battery energy storage station, and the sub-controllers optimize according to these coordination information. Its own output power, and the output power information is fed back to the coordinator; in this way, the iterati...

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Abstract

The invention discloses a control method to balance microgrid mismatch power by aid of distributed storage battery energy storing stations. The control method includes adopting an energy management system on the side of the microgrid as a coordinator in optimizing calculation to provide coordinated messages to auxiliary controllers on the side of each distributed storage battery energy storing station, optimizing output power of the auxiliary controllers by the auxiliary controllers according to the coordinated information and feed back the output power to the coordinator; performing iterative computations to acquire optimized output power of each distributed energy storing power station, and balancing power proportion missing quantity of the microgrid in a period of time in future. The control method has the advantages of distributed control, is adapt to physical distribution character of the microgrid energy storing power stations, has high efficiency, and can solve big problem that cannot be solved by the existing technology successfully.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a distributed control method for balancing mismatched power of microgrids by using distributed lead-acid battery energy storage stations. Background technique [0002] When the microgrid is running in an isolated grid, if the intermittent distributed power generation and the rigid power consumption are unbalanced, there will be a mismatch power (defined as the power generated minus the power consumed). Due to the small inertia of the microgrid itself, the mismatched power will affect the voltage and frequency stability more significantly, and even cause the grid to collapse. In the traditional control scheme, abandoning part of the distributed generation or cutting off part of the load energy is almost the only way to solve this problem, but it loses the interests of users and generators. In a smart microgrid with distributed energy storage power stations...

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Application Information

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IPC IPC(8): H02J3/32
Inventor 李正烁袁朝勇严学庆赵荣兴
Owner JIANGSU OLITER ENERGY TECH
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