Energy Transfer Strategy for Urban Rail Transit Battery Energy Storage System to Reduce Peak Power of Traction Substation

In order to reduce the peak power of traction substation as much as possible and make better use of the configu-ration capacity of battery energy storage system (BESS) in urban rail transit, a BESS control strategy based on energy transfer is proposed. Based on the actual subway line data, the load...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on vehicular technology 2019-12, Vol.68 (12), p.11714-11724
Main Authors: Qin, Qiangqiang, Guo, Tingting, Lin, Fei, Yang, Zhongping
Format: Article
Language:English
Subjects:
Batteries
Battery energy storage system
Computer simulation
Discharge
Discharges (electric)
dynamic threshold
Electric charge
Energy
Energy conservation
energy management strategy
Energy storage
Energy transfer
Flux density
Mathematical model
Modules
Power supplies
Rails
Regenerative braking
State of charge
Strategy
Substations
Traction
Urban rail
urban rail transit
Urban transportation
Voltage stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to reduce the peak power of traction substation as much as possible and make better use of the configu-ration capacity of battery energy storage system (BESS) in urban rail transit, a BESS control strategy based on energy transfer is proposed. Based on the actual subway line data, the load characteristics of urban rail transit with different departure intervals are analyzed by using the simulation platform of urban rail transit traction power supply system. Then, based on the characteristics of urban rail traffic load and the high energy density of the battery, the SOC dynamic adjustment module and discharge threshold dynamic adjustment module were added. The discharge threshold is dynamically adjusted according to the SOC of the battery, and part of regenerative braking energy absorbed by the energy storage device is transferred from off-peak/flat peak period to peak period for release. The simulation model and 90 kW physical platform are used to verify the proposed control strategy, and the results show that the control strategy can effectively realize energy transfer. Not only can achieve energy saving and voltage stability, but also can effectively reduce the peak power of traction substation, bring more economic benefits.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2019.2948766