Abstract The battery energy storage system used in urban rail transit can effectively recover the residual regenerative braking energy of trains and suppress the voltage fluctuation of DC network. Based on the characteristics of urban rail transit load and the high energy density of the battery, a strategy of dynamic adjustment of discharge threshold based on energy transfer is proposed in this paper. The braking energy recovered in the low peak period and flat peak period of urban rail operation is transferred to the peak period by using batteries. So that the peak power of traction substation can be effectively reduced, the construction capacity and cost of traction substation can be reduced at the same time. In order to improve the performance of energy storage device. Combined with the proposed control strategy and simulation model. Economic efficiency and peak power reduction rate are taken as objective functions to optimize energy management strategy control parameters and capacity configuration results using an intelligent algorithm. Meanwhile, the optimization results of different weight coefficients are analyzed to provide theoretical basis for setting weight coefficients under different objective requirements.
Qin Qiangqiang,Guo Tingting,Lin Fei等. Optimal Research for Energy Management and Configuration of Battery ESS in Urban Rail Transit Based on Energy Transfer[J]. Transactions of China Electrotechnical Society, 2019, 34(zk1): 414-423.
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2019, Vol. 34 
