东北原油长输管网是中国规模最大的地区性原油运输系统，就该管网基于峰谷电价体制下的运行现状，建立了线性规划数学模型，提出了日输油计划优化问题，并以铁秦线为例进行分析；初步揭示了峰谷电价体制下日输油计划方式的一些基本规律， 表明在该体制下东北管网具有一定的节能降耗潜力。但该方式在一定程度上受到管道本身运行特性的约束，与热油管道相比它更适合于等温管道。

The northeastern oil pipeline network is the largest regional oil pipeline system in China. As for its operational actuality on the basis of the peak - valley price, the optimization of the daily operation scheme is presented. Virtually, the advantage of the valley price is used to increase the oil throughput rate in the valley period, and accordingly the daily energy consumption cost is lowered. Aiming at the problem the linear programming mathematic model is formulated in this paper. By means of this method, the analysis is carried out for Tieling-Qinhuangdao hot oil pipeline under different daily throughput rates. Some fundamental rules for the optimization of the daily operation scheme based on the peak-valley price are found from the computed results. At the same time, it is shown that the optimal scheme will reduce energy cost of the network to some extent. However, this method is subject to the operational characteristics of the pipeline to some degree. Thus, it is more applicable to the isothermal pipeline than the hot oil pipeline.