Computational Analysis of Natural Gas Delivery Discrepancy

2011 ◽  
Vol 88-89 ◽  
pp. 524-530
Author(s):  
Vadim Seleznev ◽  
Vladimir Kiselev ◽  
Sergey Pryalov
Keyword(s):  
Natural Gas ◽  
Gas Dynamics ◽  
Computational Analysis ◽  
Field Measurements ◽  
Identification Problem ◽  
Distribution Networks ◽  
Reference Points ◽  
Natural Gas Transmission ◽  
Minimum Discrepancy ◽  
Gas Supply

The article describes algorithm for optimization of discrepancies in natural gas supply to consumers. Numerical monitoring makes it possible to obtain computational estimates of actual gas deliveries over given time spans and to estimate their difference from corresponding values reported by gas consumers. Mathematical analysis of the discrepancy is based on a statement and numerical solution of identification problem of a physically proved gas dynamics mode of natural gas transmission through specified gas distribution networks. The identified mode parameters should have a minimum discrepancy with field measurements of gas transport at specified reference points of the simulated pipeline network.

scholarly journals Numerical Monitoring of Natural Gas Distribution Discrepancy Using CFD Simulator

2010 ◽  
Vol 2010 ◽  
pp. 1-23 ◽  
Author(s):  
Vadim E. Seleznev
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Field Measurements ◽  
Identification Problem ◽  
Distribution Networks ◽  
Reference Points ◽  
Gas Distribution ◽  
Natural Gas Transmission ◽  
Minimum Discrepancy ◽  
Gas Supply

The paper describes a new method for numerical monitoring of discrepancies in natural gas supply to consumers, who receive gas from gas distribution loops. This method serves to resolve the vital problem of commercial natural gas accounting under the conditions of deficient field measurements of gas supply volumes. Numerical monitoring makes it possible to obtain computational estimates of actual gas deliveries over given time spans and to estimate their difference from corresponding values reported by gas consumers. Such estimation is performed using a computational fluid dynamics simulator of gas flows in the gas distribution system of interest. Numerical monitoring of the discrepancy is based on a statement and numerical solution of identification problem of a physically proved gas dynamics mode of natural gas transmission through specified gas distribution networks. The identified mode parameters should have a minimum discrepancy with field measurements of gas transport at specified reference points of the simulated pipeline network.

scholarly journals The Eastern Baltic LNG Terminal as a Prospect to Improve Security of Regional Gas Supply

2021 ◽  
Vol 15 ◽  
pp. 34-40
Author(s):  
Kati Kõrbe Kaare ◽  
Ott Koppel ◽  
Ando Leppiman
Keyword(s):  
Natural Gas ◽  
Common Interest ◽  
Member States ◽  
Trading Systems ◽  
Eu Member States ◽  
Natural Gas Transmission ◽  
Supply Interruptions ◽  
The Baltic ◽  
Gas Supply ◽  
Eastern Baltic

One of the crucial issues in Europe at the moment is securing reliable gas supply. Achieving security of gas supply implies diversifying gas sources, while having enough supply, transportation, and storage capacity to meet demand peaks and supply interruptions. In 2013, the Baltic States still remain disintegrated from the rest of Europe in one crucial way: their natural gas infrastructure isolates them into “energy islands”. The Eastern Baltic Sea European Union (EU) member states of Finland, Estonia, Latvia and Lithuania are the only ones which remain isolated from the present integrated EU natural gas transmission system. The gas demand in these isolated member states is approximately ten billion cubic meters (bm3) of natural gas per year. The third energy package of EU proposes a new series of measures to promote competition and create a single European energy market. Estonia, Latvia, Lithuania and Finland now for the first time have a chance to secure their energy independence by connecting their natural gas systems with those of their European allies and evolving them into market-based trading systems. Liquefied natural gas (LNG) is an important energy source that contributes to energy security and diversity, therefore a concept of a regional LNG terminal has been proposed. In this paper the authors give an overview of the current situation and present possible future scenarios with the development of Eastern Baltic regional LNG terminal. 2013 is a crucial time as in September the decision will be made regarding weather the regional LNG terminal will be chosen as a project of common interest in the trans-European energy networks.

Gas supply reliability assessment of natural gas transmission pipeline systems

Energy ◽  
2018 ◽  
Vol 162 ◽  
pp. 853-870 ◽  
Author(s):  
Weichao Yu ◽  
Shangfei Song ◽  
Yichen Li ◽  
Yuan Min ◽  
Weihe Huang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Reliability Assessment ◽  
Pipeline Systems ◽  
Natural Gas Transmission ◽  
Transmission Pipeline ◽  
Gas Supply ◽  
Supply Reliability

Elemental sulphur deposition in natural gas transmission and distribution networks

2008 ◽  
Vol 44 (2) ◽  
pp. 115-122 ◽  
Author(s):  
Pierre Cézac ◽  
Jean-Paul Serin ◽  
Jean-Michel Reneaume ◽  
Jacques Mercadier ◽  
Gérard Mouton
Keyword(s):  
Natural Gas ◽  
Distribution Networks ◽  
Elemental Sulphur ◽  
Sulphur Deposition ◽  
Natural Gas Transmission ◽  
Transmission And Distribution

Evaluation of Composite Sleeve Repair in Kinked Dent in Natural Gas Pipeline

2010 ◽  
Author(s):  
Byron G. Souza Filho ◽  
Cristiane S. Frota ◽  
Fabio M. Matsuo ◽  
Gabriel Petry ◽  
Walter Schultz Neto
Keyword(s):  
Natural Gas ◽  
Pressure Fluctuations ◽  
Mechanical Damage ◽  
Field Measurements ◽  
Normal Operation ◽  
Principal Stresses ◽  
Natural Gas Pipeline ◽  
Natural Gas Transmission ◽  
Construction Operation ◽  
Transmission And Distribution

The Code ASME B31.8 is well established as a safe Code for all life phases of Natural Gas Transmission and distribution pipelines, like: design, construction, operation and maintenance. In the case of mechanical damage, such as dents, the Code contains maintenance provisions for field acceptance or repair of dent and dents combined with other defects consisting of stresses raisers such as gouges, arc burns and welds. Dents, sometimes, are found in sensitive areas due to urban sprawl upon pipeline right-of-way or environmental concerns. In addition dents shapes, sometimes, are not smooth or plain like the code defines as criteria of acceptance. This paper presents and describes some full scale pipeline test’s results in samples containing kinked dents, reproduced in laboratory, in recent vintage pipelines. This type of defect is usually caused by rock puncturing, unauthorized excavation or soil-pipeline interaction in an inservice pipeline. The damaged pipeline samples were repaired by composite reinforcing sleeves before being submitted to the tests. The dimensions of the defects were detected and sized by Geometric and MFL PIG, and compared with field measurements. The studies were conducted concerning internal pressure fluctuations, which can be covered by fluctuations in the principal stresses in the pipe wall. The analyses also considered the plastic strain around the damaged area and effects of rerounding or spring back in case of the defects were generated in conditions of normal operation or in condition of out of service pipeline.

Research of pressure influence in the gas supply system on the energy consuption level of gas devices

2019 ◽  
Vol 6 (2) ◽  
pp. 56-63
Author(s):  
L. D. Pylypiv ◽  
І. І. Maslanych
Keyword(s):  
Natural Gas ◽  
Residential Buildings ◽  
Supply System ◽  
Normal Operation ◽  
Gas Combustion ◽  
Efficient Operation ◽  
Gas Consumption ◽  
Natural Gas Combustion ◽  
Gas Supply

There are investigated the influence of operating pressures in the gas supply system on the level of such energy indicators as efficiency, gas flow and gas overrun by gas equipment in residential buildings. There is established a relationship between the values of operating pressures in the gas supply system and the gas consumption level of household appliances. The causes of insufficient pressure in the gas networks of settlements are analyzed in the article. There is also developed an algorithm for calculating the change in the efficiency of gas appliances depending on the operational parameters of the gas network. It has been found that the most efficient operation of gas appliances is observed at an overpressure at the inlet of gas appliances of about 1200 Pa.To ensure the required quality of natural gas combustion among consumers and minimize gas consumption there are justified the following measures in the article: coordinating a domestic regulatory framework for assessing the quality of natural gas with international norms and standards; improving the preparation of gas coming from local wells before supplying it to gas distribution networks; auditing low pressure gas pipelines and reconstructing areas affected by corrosion; ensuring standard gas pressure in the network for the normal operation of domestic gas appliances; stating quality indicators of natural gas combustion by gas sales organizations.

Concept and principles of building an integrated system of management of activities of regional gas supply system entities Kaliningrad region

2019 ◽  
pp. 64-72
Author(s):  
G.G. Arunyants
Keyword(s):  
Control System ◽  
Natural Gas ◽  
Supply System ◽  
Integrated System ◽  
Software Complex ◽  
Geographically Distributed ◽  
Basic Solutions ◽  
Kaliningrad Region ◽  
And Control ◽  
Gas Supply

The results of analysis of problems of regulation of gas supply complex of Kaliningrad region and main ways to increase its efficiency, as well as basic solutions for creation of a software complex Т-GAZ-2 automated calculation of natural gas tariffs for ACS of gas supply system subjects, geographically distributed and information connected to the regional automated information and control system (RAIS).

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