煤炭产区含氢重卡的综合能源系统优化运行
Integrated Energy System Optimal Operation in Coal District With Hydrogen Heavy Trucks
AI总结:
本文针对煤炭产区场景,提出基于二阶锥规划的电气综合能源系统优化调度模型,构建含煤开采、制氢、氢重卡运煤的封闭工业循环,可降低运行成本并提升可再生能源利用率。
摘要:
煤炭行业对社会经济贡献显著,但在开采、运输和发电过程中,温室气体排放给环境带来巨大压力。在综合能源系统(IES)中,当前针对电转气(P2G)技术的研究主要聚焦于将可再生能源驱动的电解槽产生的氢气注入天然气管道。然而,氢气注入可能导致管道发生不可逆的氢脆。本文考虑产煤区通常同时拥有丰富煤炭资源和可再生能源资源的典型场景,通过电转气(P2G)技术和基于煤气化的煤制氢(C2H)技术生产充足的氢气。为运输开采出的煤炭,氢重卡通过及时消耗氢气提供了一种有前景的解决方案,从而避免了将可能存在危险的氢气注入管道,也减少了对相对昂贵的氢气储存的需求。基于二阶锥规划(SOCP),本文提出了一种电气综合能源系统的优化调度模型。该模型创新性地研究了涵盖煤炭开采、制氢、氢卡车运煤及综合能源系统的封闭工业循环,以提升可再生能源利用率并协调多种能源载体。最后,基于IEEE 30节点电力系统和比利时24节点天然气网络开展了案例研究。结果表明,所提出的制氢技术可将典型日运行成本降低7.7%;在中国碳排放权交易体系下,氢重卡的运行成本较电动汽车和柴油卡车分别降低0.95%和4.68%;在欧洲更严格的碳排放权交易体系下,……
英文摘要:
The coal industry contributes significantly to the social economy, but the emission of greenhouse gases puts huge pressure on the environment during mining, transportation, and power generation. In the integrated energy system (IES), current research on power-to-gas (P2G) technology mainly focuses on injecting hydrogen generated from renewable-energy-powered electrolysis into natural gas pipelines. However, hydrogen injection may cause irreversible hydrogen embrittlement of pipelines. In this paper, sufficient hydrogen is produced through both P2G technology and coal-to-hydrogen (C2H) based on coal gasification, considering the typical scenario where coal-producing regions are rich in both coal and renewable energy resources. To transport mined coal, hydrogen heavy-duty trucks provide a promising solution by consuming hydrogen in a timely manner, thereby avoiding potentially dangerous hydrogen injection into pipelines and reducing the need for relatively expensive hydrogen storage. An optimal scheduling model for an electric-gas IES is proposed based on second-order cone programming (SOCP). The proposed model innovatively studies a closed industrial loop including coal mining, hydrogen production, coal transportation by hydrogen trucks, and integrated energy systems to enhance renewable energy utilization and coordinate multiple energy carriers. Finally, a case study based on the IEEE 30-bus power system and the Belgium 24-node natural gas network is conducted. The results show that the proposed hydrogen production technology reduces typical daily operating costs by 7.7%. Under China's carbon emissions trading system, the operating costs of hydrogen heavy-duty trucks are reduced by 0.95% and 4.68% compared with electric vehicles and diesel trucks, respectively. Under Europe's stricter carbon emissions trading system, ...
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