Efficient modelling of natural gas pipeline on electromagnetic transient simulation programs

Song, Ruikai; Xia, Yunfeng; Chen, Ying; Du, Songhuai; Strunz, Kai; Song, Yankan; Wang, Fang

doi:10.1049/rpg2.12467

Cited by 6 publications

(5 citation statements)

References 22 publications

(61 reference statements)

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“…The pipe model in [15] is a lumped-element equivalent circuit model. Owing to the difficulty of obtaining analytical solutions through theoretical calculations, the simulation obtained by an existing pipe model available in Dymola is considered here as a reference for comparison [17,24]. Dymola is a multi-engineering modelling and simulation software based on the Modelica language and provides hydrodynamic and thermodynamic component libraries.…”

Section: Simulation Of Temperature and Mass Rate Flow Step Responses ...mentioning

confidence: 99%

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Lumped‐element equivalent circuit modelling of district heating pipe in electromagnetic transients program

Jiang,

Xia,

Lan

et al. 2024

The Journal of Engineering

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Electromagnetic transients program (EMTP) is widely used to analyze transients in power systems. With the increased interest in integrated energy systems (IESs), it would be beneficial to extend the application of EMTP to multi‐physics transients in integrated electrical and heating networks. In this paper, an accurate and efficient lumped‐element circuit model of the heating district pipe is developed in EMTP. The pipe is split into segments using spatial discretization. The application of the numerical discretization to the energy conservation equation gives the discretized pipe equation which is expressed in the form of a companion model of EMTP. In order to reduce the computational effort, the time‐varying terms in the admittance matrix of the companion model of pipe are eliminated. The modification of the admittance matrix is avoided. Furthermore, the internal nodes resulting from spatial discretization are eliminated, resulting in a lumped‐element circuit model with only two external nodes. Case studies are carried out to validate the proposed model in terms of accuracy and efficiency. The 2‐norm error of the proposed model is 0.0153%. With a pipe length of 100 m, the computational speed of the proposed model is increased by a factor of 2.94 compared with the existing distributed‐element circuit model. The implementation of the proposed pipe model in the EMTP‐type simulator enables the analysis of multi‐physics transients in a multi‐carrier energy system.

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Section: Simulation Of Temperature and Mass Rate Flow Step Responses ...mentioning

confidence: 99%

“…Not only in thermal systems, but equivalent circuit modelling is also widely utilized across various other fields. The equivalent circuit model for gas pipelines is established in [17,18]. In [19], the equivalent circuit model of the directional coupler with lumped elements is proposed.…”

Section: Introductionmentioning

confidence: 99%

Lumped‐element equivalent circuit modelling of district heating pipe in electromagnetic transients program

Jiang,

Xia,

Lan

et al. 2024

The Journal of Engineering

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“…If a gas leak is ignited immediately to form a jet-spreading flame, in general, the height of the jet flame is proportional to the square root of the gas leak flow rate. Bringing in equation (7) gives the radius of injury, then:…”

Section: Early Warning Models For Fire and Explosion Failuresmentioning

confidence: 99%

“…There are various data sources involved in gas pipeline management, including but not limited to pipeline pressure, flow, and temperature data, geographic information system (GIS) data, and realtime monitoring data from sensors [4][5][6]. The fusion of data from multiple sources can provide a more comprehensive view of the system and help assess the operational status and potential risks of pipelines more accurately [7]. An efficient, intelligent gas pipeline management system usually includes several key components, including data collection, data storage, data analysis, and decision support [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Research on Intelligent Management System of Gas Pipeline with Multi-source Data Fusion

Cao,

Tan,

et al. 2024

Applied Mathematics and Nonlinear Sciences

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Aiming at the current challenges of enormous scale, complex structure, difficult control and frequent accidents of city gas high-pressure pipeline network, there are still three aspects of difficulties in the risk monitoring and control of China’s city gas high-pressure pipeline network, namely, rough data, shallow assessment, and lack of power. This paper proposes an intelligent management system for gas pipelines based on C/S model and J2EE enterprise-level framework, in which the failure warning models of gas leakage, Gaussian plume diffusion, and fire and explosion are established. And the Kalman filter algorithm improved by DS evidence theory is used for intelligent fusion of Multi-source data, analyzing and screening the unified adequate information on data types, extracting state characteristics, classifying warning levels, and developing an integrated and visualized pipeline remote diagnosis and warning platform. In the simulation of the intelligent management system of gas pipeline, when the wind speed is 1.5m/s in winter, the ground surface is a safe area within 12.15m of the gas pipeline. When the maximum wind speed is 10m/s, the upper limit distance of the gas leading to fire and explosion is only 2.43m, and the hazardous range of the gas pipeline jet fire is within 12.69m. Relying on the gas high-pressure pipeline network in L city for practical experiments and applications, it provides technical support and decision-making basis for the construction of intelligent pipeline network, comprehensively improves the risk control capability of city gas high-pressure pipeline network, and has reference significance for the risk control of national city gas high-pressure pipeline network.

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“…Numerical methods are discretised in space and time [7]. They are computationally intensive and may have convergence problems [8]. In [9][10][11][12][13][14][15], the analysis methods of electrical circuits are applied to thermal systems based on the electric circuit analogy.…”

Section: Introductionmentioning

confidence: 99%

Lumped-element Equivalent Circuit Modeling of District Heating Pipe in Electromagnetic Transient Programs

Jiang,

Xia,

Lan

et al. 2023

Preprint

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Electromagnetic transients program (EMTP) is widely used to analyse transients in power systems. With the increasing interest in integrated energy systems (IESs), it would be beneficial to extend the application of EMTP to multi-physics transients in integrated electrical and heating networks. In this paper, an accurate and efficient lumped-element circuit model of the heating district pipe is developed in EMTP. The pipe is split into segments using spatial discretisation. The application of the numerical discretisation to the energy conservation equation gives the discretised pipe equation which is expressed in the form of a companion model of EMTP. In order to reduce the computational effort, the time-varying terms in the admittance matrix of the companion model of pipe are eliminated. The modification of the admittance matrix is avoided. Furthermore, the internal nodes resulting from spatial discretisation are eliminated, and the pipe model appears as a lumped-element circuit with two external nodes. Case studies are carried out to verify the accuracy and efficiency of the proposed lumped-element circuit model of pipe. The implementation of the proposed pipe model in the EMTP-type simulator enables the analysis of multi-physics transients in a multi-carrier energy system.

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Efficient modelling of natural gas pipeline on electromagnetic transient simulation programs

Cited by 6 publications

References 22 publications

Lumped‐element equivalent circuit modelling of district heating pipe in electromagnetic transients program

Lumped‐element equivalent circuit modelling of district heating pipe in electromagnetic transients program

Research on Intelligent Management System of Gas Pipeline with Multi-source Data Fusion

Lumped-element Equivalent Circuit Modeling of District Heating Pipe in Electromagnetic Transient Programs

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