Working principle of subway lithium battery energy storage station

What is a battery energy storage system?

A battery energy storage system (BESS) is an electrochemical device that charges from the grid or a power plant and then discharges that energy to provide electricity or other grid services when needed.

Can a hybrid energy storage system prolong the service life of a train?

The simulation results show that the energy control strategy of the hybrid energy storage system of urban rail train can reasonably distribute power, make the output current of the battery more stable, and prolong the service life of the battery.

How do power batteries and Supercapacitors work?

Power batteries and supercapacitors are connected in parallel to the structure of an urban rail train with a composite energy storage system to provide the energy needed for driving and recover the feedback energy for train braking.

What is a light rail energy storage system?

The energy storage system for the light rail vehicle, which is among the DC-link and the traction system, is in charge of the power supply for the train when the catenary or the third rail is not available and transporting the energy that feeds back when the train is braking to the energy storage device.

How much power does an energy storage system use?

The DC-link voltage ranges from 750 to 930 V, the voltage of the lithium battery ranges from 500 to 700 V. The power that a single energy storage system has to deal reaches over 190 kW (including the power of the auxiliary system and the traction system).

Who uses battery storage?

Battery storage is a technology that enables power system operators and utilities to store energy for later use.