计及牵引负荷不确定性的同相供电系统随机优化运行策略  

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

作　　者：陈垠宇 陈民武[1] 李东阳[1] 范家彬 梁宗佑 李波 CHEN Yinyu;CHEN Minwu;LI Dongyang;FAN Jiabin;LIANG Zongyou;LI Bo(School of Electrical Engineering,Southwest Jiaotong University,Chengdu Sichuan 611756,China;Department of Electronic and Electrical Engineering,University of Strathclyde,Glasgow G11XW,U.K.;Electrification&Telegraphy Engineering Design Research Department,China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756 [2]斯特拉斯克莱德大学电气与电子工程学院,英国格拉斯哥G11XW [3]中国铁路设计集团有限公司电化电信工程设计研究院,天津300308

出　　处：《中国铁道科学》2023年第5期191-200,共10页China Railway Science

基　　金：国家自然科学基金资助项目(52277126);四川省科技创新创业苗子工程培育项目(MZGC20230005);国家留学基金资助项目(202207000086)。

摘　　要：为克服列车高速行驶中取流波动性而加剧的同相供电系统安全高效运行的不确定性,建立包括牵引变压器、潮流控制器、储能元件的同相供电系统数学模型。以牵引负荷功率为随机变量,形成刻画运行不确定性的潮流机会约束条件;以电压不平衡补偿、系统安全运行边界为确定性约束,计及混合储能服役性能退化影响,以牵引变电所电费成本和储能元件老化成本组成的日运行成本最小为优化目标,以潮流控制器控制方案和混合储能充放电策略为决策变量,建立同相供电系统随机优化运行模型,并将该模型转化为混合整数线性规划模型进行求解。算例分析结果表明:提出的优化运行策略在不确定性条件下可有效降低运行成本约13%,且混合储能循环寿命提高了约3 a。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.

关 键 词：同相供电系统 随机优化运行 机会约束 混合整数线性规划 牵引负荷 运行成本 循环寿命 

分 类 号：U264.3[机械工程—车辆工程]