Multi-energy storage hybrid coordination control method and device

Abstract

The invention relates to the technical field of power distribution networks and energy storage, and discloses a multi-energy storage hybrid coordination control method and device. The method comprises the following steps: firstly, according to unbalanced power, determining initial following power of each energy storage, then, acquiring characteristic parameters of each energy storage in real time, determining charge and discharge states of each energy storage, finally, acquiring residual capacity of each energy storage, and according to the charge and discharge states of each energy storage, the residual capacity of each energy storage and a preset energy storage compensation priority, adjusting the initial following power of each energy storage, and determining the final following power of each energy storage. The problems of new energy consumption and power grid power fluctuation are solved by coordinating combined operation of the three energy storage devices, charging and discharging cooperation among multiple energy storage devices is reasonably coordinated, meanwhile, the stability of the micro-grid can be improved, and the service life of the energy storage devices can be prolonged.

Description

technical field [0001] The present application relates to the technical field of distribution network and energy storage, and in particular to a hybrid coordinated control method and device for various energy storages. Background technique [0002] As new energy systems such as wind power and photovoltaics are more and more connected to the grid, due to the randomness of some renewable energy sources, the electric energy and power generated by them are also highly unstable, and the power fluctuation of the load itself , if it is directly connected to the load for power supply or grid-connected operation, it will bring a huge impact to the grid. [0003] Therefore, the energy storage system is added to the original system to stabilize the disturbance of the system, maintain the stability of the power quality of the system, and ensure the dynamic balance of power. Due to the limitations of a single energy storage system, a hybrid energy storage system is often added to balanc...

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Problems solved by technology

[0005] This application discloses a method and device for multi-energy storage hybrid coordinated control, which is used to solve a series of problems in the prior art, such as how to solve a series of problems such as new energy consumption and grid power fluctuations, etc. Reasonably coordinate the charging and discharging coordination between various energy storages, increase the stability of the power grid and prolong the technical problems of the life of the energy storage device

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