Cascade utilization energy storage battery energy control method and system for energy storage unit

Abstract

The invention relates to a cascade utilization energy storage battery energy control method and system for an energy storage unit; the method comprises the following steps of acquiring a power commandvalue of the cascade utilization energy storage battery of each energy storage unit at the current moment; obtaining a power command value of the cascade utilization energy storage battery of each energy storage unit at the next moment according to the power command value of the cascade utilization energy storage battery of each energy storage unit at the current moment through a pre-establishedrecurrent neural network model; and adjusting the current discharging rate of the cascade utilization energy storage battery of each energy storage unit according to the power command value of the cascade utilization energy storage battery of each energy storage unit at the next moment. By virtue of the technical scheme, the power command value is predicted through the recurrent neural network, sothat the problem that due to the fact that the power change is too large, the battery output is sharply increased is avoided, and a response can be made in advance, so that the use of the cascade utilization battery is more stable; and the energy control method of the energy storage system is optimized, and energy management efficiency of the energy storage system is improved.

Description

technical field [0001] The invention relates to the technical field of smart grid and energy storage and conversion, in particular to an energy storage battery energy control method and system for cascade utilization of an energy storage unit. Background technique [0002] With the continuous development of lithium batteries and their integrated technologies, the application of battery energy storage power stations to achieve smooth wind power output, track planned power generation, participate in system frequency modulation, peak shaving and valley filling, transient active output emergency response, transient voltage emergency support, etc. This kind of application can not only improve the operating efficiency of power equipment and reduce the cost of power supply, but also promote the application of renewable energy and improve the stability and reliability of operation. [0003] In the field of cascade utilization energy storage batteries, since the cascade utilization b...

AI Technical Summary

Problems solved by technology

[0003] In the field of cascade utilization energy storage batteries, since the cascade utilization batteries have been charged and discharged many times, the battery capacity and performance have attenuated, resulting in low energy management efficiency of the energy storage system

At the same time, due to excessive power changes, it is easy to cause a surge in the cascade utilization battery, making the cascade utilization battery unstable, reducing the service life of the cascade utilization battery and the power generation efficiency of the system

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