基于碳捕集-电转气的矿区综合能源系统协同优化调度

Collaborative Optimal Scheduling of Coal Mine Integrated Energy System Based on Carbon Capture and Power to Gas

“双碳”战略目标下,为促进风光消纳与能源电力低碳转型、提高矿区能源利用率,提出一种含伴生能源和碳捕集与电转气耦合的矿区综合能源系统低碳经济调度模型。首先,综合考虑瓦斯、乏风、涌水等矿区伴生能源利用,建立矿区综合能源系统基本模型,并以碳捕集和电转气设备为耦合单元,促进节能减排与可再生能源消纳。然后,引入奖惩阶梯式碳交易机制,以矿区综合能源系统运行成本最小为目标,建立矿区综合能源系统协同优化调度模型。最后,以中国云南某大型煤矿为例,通过设置不同场景进行仿真分析。结果表明,所提模型能够促进矿区综合能源系统低碳经济运行,提高风光消纳率。

Under the strategic goal of carbon emission peak and carbon neutrality,in order to promote the wind and photovoltaic(PV)accommodation and energy power low-carbon transformation,and improve the energy utilization rate of coal mine,this paper proposes a low-carbon economic scheduling model of coal mine integrated energy system(CMIES)with associated energy and the coupling of carbon capture and power to gas.Firstly,considering the utilization of associated energy in the coal mine such as gas,ventilation and water gushing,the basic model of CMIES is established,and the carbon capture and power-to-gas devices are used as coupling units to promote energy conservation,emission reduction and renewable energy accommodation.Secondly,the reward and punishment ladder-type carbon trading mechanism is introduced,and the collaborative optimal scheduling model of CMIES is established with the goal of minimizing the operation cost of the CMIES.Finally,taking a large coal mine in Yunnan,China as a case,the simulation analysis is carried out by setting different scenarios.The results show that the proposed model can promote the low-carbon economic operation of the CMIES and improve the wind and PV accommodation rate.