考虑“电-交通”协同最优潮流的电气化交通碳汇效应评估  

Carbon Sink Assessment Approach for Electrified Transportation byConsidering Coordinated Optimal“Power-Traffic”Flow

作　　者：刘浠流 陈冠霖 吴宁 肖静 吴晓锐 李勋 黄智锋 LIU Xiliu;CHEN Guanlin;WU Ning;XIAO Jing;WU Xiaorui;LI Xun;HUANG Zhifeng(Liuzhou Power Supply Bureau of Guangxi Power Grid Co.,Ltd.,Liuzhou 545026,China;Southern Power Grid Electric Vehicle Service Co.,Ltd.,Guangzhou 518000,China)

机构地区：[1]广西电网有限责任公司柳州供电局,广西柳州545026 [2]南方电网电动汽车服务有限公司,广东广州518000

出　　处：《电工技术》2024年第11期49-55,59,共8页Electric Engineering

基　　金：广西电网公司科技项目“社区电动汽车集群有序充电技术开发及装置研制”(编号CG0400062001525841)。

摘　　要：为缓解环境压力,推动交通电气化改革已成为全球共识。电动汽车(Electric Vehicle, EV)的普及虽可有效降低交通直接碳排,但同时也会增加电力负荷,造成源侧间接碳增量。针对电气化交通导致的整体碳排“一增一减”现象,提出一种考虑“电-交通”协同的碳汇效应优化评估方法。首先,建立兼顾EV和油耗汽车特性的多智能体微观交通配流模型,完善多类汽车直接碳排计算的仿真基础;接着,提出基于无迹Kalman滤波随机估计的间接碳排等值模型,直观刻画EV入网对电源侧影响;然后,以最小化总碳排(直接碳和间接碳)及交通不均衡量为目标,构建考虑“电-交通”协同最优潮流的电气化交通碳汇评估模型,并用广义Benders算法高效求解。算例结果表明,所提出方法可通过促进车流量与功率流均衡分布,同时实现直接和间接碳排削减,提升“电-交通”耦合系统整体碳汇效应。To facilitate environmental issues,electrifying traffic system has become a worldwide consensus in the past decades.The massive use of electric vehicles(EVs),though helps much in cutting direct emissions from transportation,also leads to a higher power load and an extra carbon increment in source sides.In view of this"trade-off"brought by electrified transportation,a carbon sink assessment approach is proposed by considering the coordinated optimal"power-traffic"flow.First the multi-agent-based micro-traffic assignment model was modified with the features of multi-type vehicles(EVs and gasoline vehicles),which made it feasible to count their direct carbons.Then a novel equivalent model for indirect carbon was proposed via the unscented Kalman filter.In this manner,the carbon increment caused by EV charging would be more intuitive.On top of this,a carbon sink assessing model considering the optimal"power-traffic"flow was proposed,which aimed to minimize the total carbon(direct and indirect parts)as well as traffic imbalance indexes.The proposed model could be efficiently solved by the Benders decomposition.In case studies,the proposed approach could cut direct and indirect carbons simultaneously by balancing traffic flow and power flow,and thus would be conducive to strengthen the carbon sink of a coordinated"power-traffic"system.

关 键 词：协同最优潮流 电气化交通 微观交通配流模型 无迹Kalman滤波 碳汇效应 

分 类 号：TM715[电气工程—电力系统及自动化]