摘要
为铁路牵引供电系统中牵引变电站接入光伏等新能源以及储能,是积极落实能源交通绿色融合发展战略的手段之一。协同规划各个牵引变电站的新能源储能容量,能够有效提升较长距离牵引供电网络的绿色化水平。该文以融通型牵引供电架构为基础,以“规划+运行”为基本思路,提出多牵引变电站光伏-储能协同规划配置方法。首先对负荷侧数据进行处理,同时建立光伏出力的概率模型;其次以经济性最优建立单牵引变电站优化规划模型,并采用广义目标级联(G-ATC)法,考虑投资、运行成本最小及弃光成本最小,构建同一铁路沿线多座牵引变电站的协同规划模型,对多站点进行协同规划配置;最后针对得到的协同规划配置方案进行了运行模拟,并以某货运铁路为例进行分析。结果表明,该方法能够合理、高效地完成多站点新能源-储能规划配置并满足系统运行需求,为既有基于融通供电型的牵引供电系统升级改造提供了可行方案。
The continuous integration of energy and transportation development is a hot topic.Connecting new energy sources such as photovoltaic(PV)and energy storage equipment to the traction substations in the railroad traction power supply system is one of the means to implement the green integration of energy and transportation and enhance the greening degree of the system.Reasonable deployment and coordinated planning of new energy and energy storage capacity in each traction substation can effectively improve the greening of the longer-distance traction power supply network and the degree of system coordination.Thus,a green energy system for rail transportation can be gradually built up.Based on the integrated traction power supply architecture and the basic idea of“planning+operation”,a collaborative planning and configuration method for PV and energy storage in multiple traction substations is proposed.The purpose of this method is to complete the one-time and integrated configuration of a multi-traction substation system.The traction load side data are processed.The means of averaging eliminates the drastic volatility of the load and meets fluctuations near the mean value.The time scale can be reduced while ensuring its volatility.A probabilistic model is established to construct the yearly typical day PV output model.According to the hour-by-hour output interval,the probability processing histogram of PV is constructed,and the probability sum of PV output is obtained by stepwise summation.The annual typical daily output curve is finally obtained.Then,with the economic optimization,a single traction substation optimization planning model is established.The generalized analytical target cascading(G-ATC)method is used to construct a cooperative planning model for multiple traction substations along the same railroad line,by minimum investment and costs operational alongside PV power curtailment expenses of the cooperative planning system.Finally,the operation simulation is carried out.The cooperative planning model of multiple traction substations along the same railway line is constructed,and the cooperative planning configuration is carried out.Then the proposed model and method are verified by taking the freight railroad as an example.By changing the billing method of the interactive power on the contact line,the payback period of the investment cost is calculated.The proposed model can reasonably and efficiently complete the multi-site new energy-energy storage planning configuration and meet the system operation requirements,providing a feasible solution for the upgrading and greening of the existing traction power supply system.
作者
陈艳波
刘宇翔
田昊欣
张瑞芯
徐子韬
Chen Yanbo;Liu Yuxiang;Tian Haoxin;Zhang Ruixin;Xu Zitao(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University,Beijing 102206 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2024年第15期4599-4612,共14页
Transactions of China Electrotechnical Society
基金
国家重点研发计划资助项目(2021YFB2601502)。
关键词
轨道交通绿色能源系统
牵引变电站
广义目标级联法
光伏-储能
协同规划
Rain transit green energy system
traction substation
generalized analytical target cascading method
photovoltaic and energy storage
collaborative planning
作者简介
陈艳波,男,1982年生,博士,教授,博士生导师,研究方向为电力系统态势感知、新能源电力系统分析、能量管理、能源交通融合和新一代人工智能。E-mail:chenyanbo@ncepu.edu.cn;通信作者:刘宇翔,男,1999年生,硕士研究生,研究方向为新能源电力系统分析、能源交通融合、电力系统规划。E-mail:lyxbgyx@163.com。
