An MILP model for the reformation of natural gas pipeline networks with hydrogen injection

Wang, Bohong; Liang, Yongtu; Zheng, Jianqin; Yuan, Meng; Qiu, Rui

doi:10.1016/j.ijhydene.2018.06.161

Cited by 49 publications

(19 citation statements)

References 23 publications

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“…According to the heat transfer equation, the difference between the end and ambient temperatures is equal to the difference between the start and ambient temperatures multiplying an exponential function of the flow rate. To consider the temperature drop more precisely, we take the Joule–Thomson effect into account, which has not been considered in the existing formulations. ,, Note that the accurate Joule–Thomson coefficient should be calculated via , which is a partial differential equation and can result in intractability of the model. Therefore, we use the average Joule–Thomson coefficient J̅ i , j , whose value can be determined from online thermophysical databases such as DDBST, based on the approximate physical states of the GPN.…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…The GPN usually consists of gas supply entrances, user exits, linking nodes, pipelines, and active equipment such as compressors and heaters. It can often be represented using the directed/undirected graph . − Mathematical modeling of the GPN inevitably introduces nonconvex terms as the performance of some active equipment cannot be practically described by convex functions. More importantly, cyclic structures allowing for reversible flow often exist in the GPN.…”

Section: Introductionmentioning

confidence: 99%

“…The nonconvex constraints including the pipeline pressure drop constraints and the compressor power and operational constraints are convexified using the “minimum energy principle”. There are also other studies that focus on the GPN with linear or branched structures. − ,− …”

Section: Introductionmentioning

confidence: 99%

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Operational Optimization of a Cyclic Gas Pipeline Network with Consideration of Thermal Hydraulics

Zheng

Feng

Wang

et al. 2021

Ind. Eng. Chem. Res.

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Following the rapidly increasing global demand for natural gas, many countries are launching projects to expand gas pipeline networks (GPNs). As a result, more cyclic GPNs are under construction with more rigorous physical constraints required, bringing new challenges to GPN optimization. This paper proposes a novel nonconvex mixed-integer nonlinear programming (MINLP) formulation for operational optimization of the cyclic GPN with simultaneous consideration of thermal hydraulics and flow direction reversibility, which has not been explored in the literature. To solve the proposed MINLP model, a three-level decomposition algorithm is proposed to generate an approximate solution, from which the flow direction is extracted and used to fix all discrete variables in the original MINLP model to construct two-stage NLP models. The NLP models are then solved to improve solution feasibility and quality. The computational results show that the proposed approach outweighs several state-of-the-art commercial MINLP solvers with better solutions and shorter computational time.

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Section: Mathematical Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Operational Optimization of a Cyclic Gas Pipeline Network with Consideration of Thermal Hydraulics

Zheng

Feng

Wang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

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“…In particular, well-developed pipeline networks could be used for transport of large quantities of compressed gaseous hydrogen over long distances. It has been shown that hydrogen could be blended with natural gas (around 10-20 per cent hydrogen) into the existing pipelines at minimal cost (Wang et al, 2018), and there is research to convert gas pipelines for exclusive hydrogen use. However, long-distance transportation on water will require technologies with greater hydrogen densities, such as liquefaction or combining it with ammonia.…”

Section: H 2 Links With Natural Gas 41 a Potentially Valuable Bridgementioning

confidence: 99%

An overview of hydrogen prospects: Economic, technical and policy considerations

Aguilera¹,

Inchauspe²

2021

Aus J Agri & Res Econ

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Hydrogen is expected to play a role in the future low-carbon economy as an energy carrier, but its market penetration remains to be seen. Much of the existing literature generally focuses on comparison of marginal production costs and prices to make rather optimistic projections. This study argues that such analysis is myopic as important barriers are ignored. Following Porter's five-force approach, we methodologically identify the economic market forces that shape the development of hydrogen markets, and discuss key obstacles in the supply chain. Using evidence of available hydrogen technologies and costs, the distribution network is identified as a major fixed-investment barrier to market entry, but it is argued that much of it could be overcome if natural gas infrastructure and technology is shared with the hydrogen sector. Natural gas, in turn, is projected to function as a transition fuel under current carbon emissions targets. This study finds that policy costs needed to promote hydrogen to achieve environmental goals can be substantially reduced if government and private investment decisions strategically focus on synergies with natural gas. The possible formulation of such policies is discussed using Australia's hydrogen industry as a case study.

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“…Many other previous works have been carried out on the integrated operation of electric, natural gas, and heat systems. In [22], a method to solve the optimal short-term operation problem of a natural gas network is presented. A combined viewpoint of gas and electricity networks in a long-term expansion-planning problem is investigated in [23].…”

Section: Introductionmentioning

confidence: 99%

Day‐ahead energy management framework for a networked gas–heat–electricity microgrid

Massrur

Niknam

Fotuhi‐Firuzabad

2019

IET Generation, Transmission & Distribution

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An MILP model for the reformation of natural gas pipeline networks with hydrogen injection

Cited by 49 publications

References 23 publications

Operational Optimization of a Cyclic Gas Pipeline Network with Consideration of Thermal Hydraulics

Operational Optimization of a Cyclic Gas Pipeline Network with Consideration of Thermal Hydraulics

An overview of hydrogen prospects: Economic, technical and policy considerations

Day‐ahead energy management framework for a networked gas–heat–electricity microgrid

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