Dynamic simulation of gas pipeline networks with electrical analogy

Taherinejad, Morteza; Hosseinalipour, Seyed Mostafa; Madoliat, Reza

doi:10.1007/s40430-017-0821-x

Cited by 22 publications

(4 citation statements)

References 10 publications

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“…After some discussion of the literature used in Section 2.1, explanations of the hydraulic model [68][69][70][71] (gas flow, pressure, and pipe diameter's mutual dependence) used for the given example of a gas network can be found in Section 2.2 (hydraulics for water networks are explained in [72][73][74][75][76][77] and those for ventilation systems in [78], while an analogy with resistances in electrical networks can be seen in [79,80]). Two iterative methods for the optimisation of pipe diameters are given further in Section 2.3, where the methods are described using an illustrative example.…”

Section: Methodsmentioning

confidence: 99%

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Two Iterative Methods for Sizing Pipe Diameters in Gas Distribution Networks with Loops

Brkić

2024

Computation

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Closed-loop pipe systems allow the possibility of the flow of gas from both directions across each route, ensuring supply continuity in the event of a failure at one point, but their main shortcoming is in the necessity to model them using iterative methods. Two iterative methods of determining the optimal pipe diameter in a gas distribution network with closed loops are described in this paper, offering the advantage of maintaining the gas velocity within specified technical limits, even during peak demand. They are based on the following: (1) a modified Hardy Cross method with the correction of the diameter in each iteration and (2) the node-loop method, which provides a new diameter directly in each iteration. The calculation of the optimal pipe diameter in such gas distribution networks relies on ensuring mass continuity at nodes, following the first Kirchhoff law, and concluding when the pressure drops in all the closed paths are algebraically balanced, adhering to the second Kirchhoff law for energy equilibrium. The presented optimisation is based on principles developed by Hardy Cross in the 1930s for the moment distribution analysis of statically indeterminate structures. The results are for steady-state conditions and for the highest possible estimated demand of gas, while the distributed gas is treated as a noncompressible fluid due to the relatively small drop in pressure in a typical network of pipes. There is no unique solution; instead, an infinite number of potential outcomes exist, alongside infinite combinations of pipe diameters for a given fixed flow pattern that can satisfy the first and second Kirchhoff laws in the given topology of the particular network at hand.

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Section: Methodsmentioning

confidence: 99%

“…Different requirements [60][61][62][63][64][65][66] in use and distribution of city gas derived from coal, followed by natural gas and a mixture of natural gas and hydrogen; • Analogy of fluid distribution through pipe networks versus electrical networks [67,79,80];…”

mentioning

confidence: 99%

Two Iterative Methods for Sizing Pipe Diameters in Gas Distribution Networks with Loops

Brkić

2024

Computation

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“…The capacity effect of a pipeline network and changes in a pipeline flow rate depend on the fluid compressibility. Accordingly, the equivalent pipeline capacity is obtained as follow [30]:…”

Section: Electrical Analogy Of Natural Gas Flowmentioning

confidence: 99%

Security-Constrained Unit Commitment With Natural Gas Pipeline Transient Constraints

Badakhshan

Ehsan

Shahidehpour

et al. 2020

IEEE Trans. Smart Grid

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The interdependencies of power systems and natural gas networks have increased due to the additional installations of more environmental-friendly and fast-ramping natural gas power plants. The natural gas transmission network constraints and the use of natural gas for other types of loads can affect the delivery of natural gas to generation units. These interdependencies will affect the power system security and economics in day-ahead and real-time operations. Hence, it is imperative to analyze the impact of natural gas network constraints on the security-constrained unit commitment (SCUC) problem. In particular, it is important to include natural gas and electricity network transients in the integrated system security because the impacts of any disturbances propagate at two distinctly different speeds in natural gas and electricity networks. Thus, analyzing the transient behavior of the natural gas network on the security of natural gas power plants would be essential as these plants are considered to be very flexible in electricity networks. This paper presents a method for solving the SCUC problem considering the transient behavior of the natural gas transmission network. The applicability of the presented method and the accuracy of the proposed solution are demonstrated for the IEEE 118-bus power system, which is linked with the natural gas transmission system and the results are discussed in the paper.

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“…Pipelines play an important role in subsea transportation and have aroused increasingly numbers of scholars for improving its reliability [2,3]. Some scholars have made studies on the outer major factors of pipeline transportation as the stability of long pipelines, the structure of the pipes and the stiffness of the pipe material in uid environments [4,5], others made efforts on the inner conditions as corrosion [6-8], fracture of girth weld [9] etc. to ensure the transportation e ciency.…”

Section: Introductionmentioning

confidence: 99%

Multi-jointed pneumatic sealing disc of fluid-driven pipeline robot: Impacts of structural parameters on performance

Yue

Yang

et al. 2023

Preprint

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Pipeline inspection gauge (PIG) is often blockage in the aging pipelines of stacked objects owing to the limitation of its passive control. In this study, a novel sealing disc with multi-jointed pneumatic webbed foot was designed which can achieve partial active control and ensure better seal performance. A finite element method (FEM) was proposed and successfully verified, then the bend performance of the sealing disc with single inflated foot was compared with whole inflated feet using the FEM, and the results show that they have good consistency. Next, the effects of two kinds of materials and five structural parameters on the performance of the sealing disc were studied using the FEM. The results show that the multi-material structure has batter performance on the bending angle and the expansion ratio compared to the same materials. As the air pressure grows, the position parameter of the joint (he) has little effect on the bending angle as well as the expansion ratio, and the bottom disc thickness (hd) has also slightly influence on the expansion ratio. Meanwhile, the thicker the webbed foot thickness (ht), the smaller the slope angle (β) and the thinner (hd), the larger the bending angle; the smaller the slope angle, the thicker the webbed foot thickness, the larger the expansion ratio. The conclusions obtained in this paper are beneficial for the design and optimization of PIG sealing discs for actively controlling. The research results provide theoretical reference for the study of intelligent and efficient pipeline pigging technology.

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Dynamic simulation of gas pipeline networks with electrical analogy

Cited by 22 publications

References 10 publications

Two Iterative Methods for Sizing Pipe Diameters in Gas Distribution Networks with Loops

Two Iterative Methods for Sizing Pipe Diameters in Gas Distribution Networks with Loops

Security-Constrained Unit Commitment With Natural Gas Pipeline Transient Constraints

Multi-jointed pneumatic sealing disc of fluid-driven pipeline robot: Impacts of structural parameters on performance

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