Energy management system and method for battery energy storage system

Abstract

The invention relates to an energy management system and an energy management method for a battery energy storage system. The energy management system is characterized by comprising a data acquisition module, a data processing module, a smoothing and filtering module, a comparison module and a PI regulation module, wherein the data acquisition module transmits acquired corresponding electric quantity data of the battery energy storage system to the data processing module; the data processing module processes the received corresponding electric quantity data to obtain active and reactive control commands, and transmits the active and reactive control commands to the battery energy storage system; the smoothing and filtering module is used for smoothing and filtering SOC output by the battery energy storage system to obtain an SOC average value of the battery energy storage system, and transmitting the SOC average value to the comparison module; the comparison module compares the received SOC average value with a target SOC mid value to obtain an SOC deviation value, and transmits the SOC deviation value to the PI regulation module; and the PI regulation module obtains an active power regulation signal according to the SOC deviation value, and transmits the active power regulation signal to the battery energy storage system for PI closed-loop regulation. The energy management system and the energy management method for the battery energy storage system can be widely applied to energy management of the battery energy storage system.

Description

technical field [0001] The invention relates to the field of battery energy storage energy management, in particular to an energy management system and method for a battery energy storage system that can be applied to the battery energy storage system in occasions such as peak shaving and valley filling, fluctuation stabilization, and plan tracking. Background technique [0002] At present, battery energy storage is a key common technology to solve new energy access, power grid peak-shaving and valley filling, and micro-grid. The charge and discharge control of the battery energy storage system is managed by the energy management system. The performance of the energy management system is directly related to the service life of the battery energy storage system. [0003] At present, there are many studies on the application of battery energy storage systems to stabilize new energy fluctuations, peak shaving and valley filling, and stabilize microgrid voltage. Most of them us...

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Problems solved by technology

[0003] At present, there are many studies on the application of battery energy storage systems to stabilize new energy fluctuations, peak shaving and valley filling, and stabilize microgrid voltage. Most of them use basic limit management in energy management to ensure the SOC (Stateofcharge, state of charge) cannot be too low or too high, so as not to seriously affect the service life of the battery energy storage system

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