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The coal industry contributes significantly to the social economy, but theemission of greenhouse gases puts huge pressure on the environment in theprocess of mining, transportation, and power generation. In the integratedenergy system (IES), the current research about the power-to-gas (P2G)technology mainly focuses on the injection of hydrogen generated from renewableenergy electrolyzed water into natural gas pipelines, which may cause hydrogenembrittlement of the pipeline and cannot be repaired. In this paper, sufficienthydrogen energy can be produced through P2G technology and coal-to-hydrogen(C2H) of coal gasification, considering the scenario of coal district is richin coal and renewable energy. In order to transport the mined coal to thedestination, hydrogen heavy trucks have a broad space for development, whichcan absorb hydrogen energy in time and avoid potentially dangerous hydrogeninjection into pipelines and relatively expensive hydrogen storage. Anoptimized scheduling model of electric-gas IES is proposed based onsecond-order cone programming (SOCP). In the model proposed above, the closedindustrial loop (including coal mining, hydrogen production, trucktransportation of coal, and integrated energy systems) has been innovativelystudied, to consume renewable energy and coordinate multi-energy. Finally, anelectric-gas IES study case constructed by IEEE 30-node power system andBelgium 24-node natural gas network was used to analyze and verify the economy,low carbon, and effectiveness of the proposed mechanism.

Electricity-gas integrated energy system optimal operation in typical scenario of coal district considering hydrogen heavy trucks