Stochastic Optimal Operation Strategy of Co-Phase Power Supply System Considering Uncertainty of Traction Load

被引：0
|
作者：
Chen Y. [1 ,2 ]
Chen M. [1 ]
Li D. [1 ]
Fan J. [2 ]
Liang Z. [1 ]
Li B. [3 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Sichuan, Chengdu
[2] Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow
[3] Electrification & Telegraphy Engineering Design Research Department, China Railway Design Corporation, Tianjin
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2023年 / 44卷 / 05期
关键词：
Chance constraints; Co-phase power supply system; Cycle life; Mixed integer linear programming; Operation cost; Stochastic optimal operation; Traction load;
D O I：
10.3969/j.issn.1001-4632.2023.05.19
中图分类号：
学科分类号：
摘要：
To overcome the uncertainty of safe and efficient operation of co-phase power supply systems (TPSSs), which is intensified by the fluctuation of absorbing energy during high-speed train operation, a mathematical model of co-phase TPSS, integrated with traction transformer, power flow controllers (PFC) and hybrid energy storage (HES), is developed. The traction load's power is treated as a random variable, and chance-constrained power flow conditions for portraying the operation uncertainty are formulated. The voltage unbalance compensation and security boundary of system operation are taken as deterministic constraints. The minimum daily operation cost, comprising energy cost of traction substation and HES's ageing cost, are set as the objective function, the control scheme of PFC and charging/discharging strategy of HES are considered as decision variables, a stochastic optimal operation model of co-phase TPSS is established considering the effect of service performance degradation of HES. The model is converted into a mixed integer linear programming problem for solving. The case study results show that the proposed optimal operation strategy is demonstrated to reduce operating costs by about 13% under uncertain conditions. Additionally, the cycle life of HES is effectively improved by about 3 years. © 2023 Chinese Academy of Railway Sciences. All rights reserved.
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页码：191 / 200
页数：9
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