煤流-潮流协同的矿山供电系统低碳优化运行

Low Carbon Optimal Operation for Mine Power Supply System With Coordinated Coal-power Flow

双碳目标的提出对我国矿山绿色高效开采提出了更高的需求。为此,该文提出煤流-潮流协同的矿山供电系统优化调度方法。首先,基于煤流在采煤工作面、带式运输机、储煤筒仓等环节的连续性特征,抽象出运输煤流和节点功率耦合的运输设备模型;其次,整合煤流运输安全约束与配网潮流约束,建立煤流-潮流协同的运行优化模型;最后,以矿山用能的经济性和碳减排为目标,考虑主网实时碳计量水平,调节采煤时间、煤流速度、运输流量与设备用能,生成煤流运输和矿山电网低碳调度的优化方案。以山西某矿山供电系统为实例,验证所提模型与方法的有效性。仿真结果表明,所提模型与方法能够有效降低矿山生产的吨煤电耗、用能成本及碳排放量,实现了煤流-潮流协同的矿山低碳化经济运行。

The carbon peaking and carbon neutrality target requires the decarbonization and higher efficiency of the mining process in coal mines.In this paper,a coal-power flow coordinated optimal scheduling approach is proposed.First,based on the continuousness of coal flow in the work face,belt conveyor and silos,the coal delivery unit model is proposed to describe the relationship between coal delivery and nodal power injection.The coal delivery safety and power flow constraints are also integrated to derive the coal-power flow optimization model.To reduce the operation cost and carbon emission of coal mines,the real time carbon emission,the mining time slots,coal delivery velocity,delivery quantity and the units scheduling are optimized to obtain the optimal scheduling of the coal transportation and power system.To validate the effectiveness of the proposed method,simulations are conducted based on a real coal mine in Shanxi Province.Results show that the proposed model and method can effectively reduce the energy demand per ton coal production,the daily operation cost and the carbon emission.Hence the optimal low-carbon scheduling of the coal mine can be achieved with the proposed coal-power flow coordinated optimization approach.