scholarly journals Optimal cooperative model for the security of gas supply on European gas networks

2021 ◽  
Vol 38 ◽  
pp. 100706
Author(s):  
Jose M. Yusta ◽  
Jesus Beyza
Keyword(s):  
Cooperative Model ◽  
Gas Networks ◽  
Gas Supply

scholarly journals Multi-Objective Optimization of Gas Pipeline Networks

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5141
Author(s):  
Andrzej J. Osiadacz ◽  
Niccolo Isoli
Keyword(s):  
Optimization Problem ◽  
Optimization Method ◽  
Optimization Approach ◽  
Multi Objective Optimization ◽  
Constrained Optimization Problem ◽  
Nonlinear Constrained Optimization ◽  
Scalar Optimization ◽  
Gas Networks ◽  
Pipeline Networks ◽  
Gas Supply

The main goal of this paper is to prove that bi-objective optimization of high-pressure gas networks ensures grater system efficiency than scalar optimization. The proposed algorithm searches for a trade-off between minimization of the running costs of compressors and maximization of gas networks capacity (security of gas supply to customers). The bi-criteria algorithm was developed using a gradient projection method to solve the nonlinear constrained optimization problem, and a hierarchical vector optimization method. To prove the correctness of the algorithm, three existing networks have been solved. A comparison between the scalar optimization and bi-criteria optimization results confirmed the advantages of the bi-criteria optimization approach.

GAS DYNAMIC OPERATING MODES OF LOW PRESSURE GAS NETWORKS DURING TRANSPORT GAS-HYDROGEN MIXTURES

2017 ◽  
Author(s):  
Mariia Serediuk ◽  
Keyword(s):  
Volume Fraction ◽  
Chemical Properties ◽  
Low Pressure ◽  
Gas Networks ◽  
Operating Modes ◽  
Gas Dynamic ◽  
Dynamic Operating ◽  
Hydrogen Mixtures ◽  
Physical And Chemical ◽  
Gas Supply

By means of mathematical modeling the patterns of change the physical and chemical properties, necessary for calculations the gas networks of low pressure, for gas-hydrogen mixtures with volume fraction of hydrogen from zero to 100 % were found. The regularities of gas-dynamic calculations of lowpressure steel gas networks in the case of transportation of gas-hydrogen mixtures with different volume fraction of hydrogen while maintaining the costs and energy consumption of the elements of the gas supply system, typical for the transportation of natural gas were established.

scholarly journals Does Increasing Natural Gas Demand in the Power Sector Pose a Threat of Congestion to the German Gas Grid? A Model-Coupling Approach

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2159 ◽  
Author(s):  
Philipp Hauser ◽  
Sina Heidari ◽  
Christoph Weber ◽  
Dominik Möst
Keyword(s):  
Natural Gas ◽  
Network Model ◽  
Power Industry ◽  
Electricity Production ◽  
Extreme Weather Events ◽  
Power Sector ◽  
Gas Network ◽  
Gas Networks ◽  
Gas Consumption ◽  
Gas Supply

This study aims to investigate the possible congestion in the German natural gas system, which may arise due to an increase in the gas consumption in the power sector in extreme weather events. For this purpose, we develop a two-stage approach to couple an electricity model and a natural gas network model. In this approach, we model the electricity system in the first stage to determine the gas demand in the power sector. We then use the calculated gas demand to model gas networks in the second stage, where we deploy a newly developed gas network model. As a case study, we primarily evaluate our methodological approach by re-simulating the cold weather event in 2012, which is seen as an extreme situation for the gas grids, challenging the security of supply. Accordingly, we use our coupled model to investigate potential congestion in the natural gas networks for the year 2030, using a scenario of a sustainable energy transition, where an increase in the gas consumption in the power industry is likely. Results for 2030 show a 51% increase in yearly gas demand in the power industry compared to 2012. Further, the simulation results show a gas supply interruption in two nodes in 2012. In 2030, the same nodes may face an (partial) interruption of gas supply in cold winter days such as the 6th of February 2012. In this day, the load shedding in the natural gas networks can increase up to 19 GWhth in 2030. We also argue that the interrupted electricity production, due to local gas interruptions, can easily be compensated by other power plants. However, these local gas interruptions may endanger the local heat production.

Britain's looming gas supply deficit

2003 ◽  
Vol 17 (2) ◽  
pp. 18
Author(s):  
R. Trigle
Keyword(s):  
Gas Supply

Integrating an LNG Plant with an Unconventional Gas Supply

2013 ◽  
Author(s):  
Chris Langley ◽  
Adriaan Spaander
Keyword(s):  
Unconventional Gas ◽  
Gas Supply

OUTDOOR TESTS OF A TOWED BOAT MODEL WITH FUEL COMBUSTION IN A BOTTOM CAVITY

2020 ◽  
Author(s):  
S. M. FROLOV ◽  
◽  
S. V. Platonov ◽  
K. A. AVDEEV ◽  
V. S. AKSENOV ◽  
...  
Keyword(s):  
Drag Force ◽  
Direct Contact ◽  
Propulsion System ◽  
Hydrodynamic Drag ◽  
Atmospheric Air ◽  
System A ◽  
Bottom Cavity ◽  
Gas Cavity ◽  
System Power ◽  
Gas Supply

To reduce the hydrodynamic drag force to the movement of the boat, an artificial gas cavity is organized under its bottom. Such a cavity partially insulates the bottom from direct contact with water and provides “gas lubrication” by means of forced supply of atmospheric air or exhaust gases from the main propulsion system. A proper longitudinal and transverse shaping of the gas cavity can significantly (by 20%-30%) reduce the hydrodynamic drag of the boat at low (less than 3%) consumption of the propulsion system power for gas supply.

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.

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