scholarly journals Environmental justification of the distribution of pressure drop in a dead-end low-pressure gas network

2021 ◽  
Vol 258 ◽  
pp. 08015
Author(s):  
Anna Malysheva
Keyword(s):  
Urban Areas ◽  
Supply System ◽  
Transmission Network ◽  
Gas Pipelines ◽  
Methane Pressure ◽  
Safety Zone ◽  
Gas Network ◽  
Dead End ◽  
Sufficient Space ◽  
Gas Supply

The gas supply system is determined by the classes of the elements of the gas transmission network associated with the pressure of the pumped natural gas. Laying gas pipelines in urban areas requires sufficient space around the pipes as a safety zone. The gas pipelines of the first level include gas communications in which the methane pressure is high or medium. To eliminate dead-end sections, gas pipelines are backed up (duplicating individual segments or ringing). The creation of a dead-end network is allowed only in small settlements. Dead-end network is a gas pipeline branching in various directions to gas consumers. Each section of the branched network has a one-way power supply.

scholarly journals Search for ways of reconstruction of the gas transportation network to reduce gas deficits in consumers in emergencies in the gas industry

2020 ◽  
Vol 216 ◽  
pp. 01003
Author(s):  
Sergey Vorobev ◽  
Sergey Senderov ◽  
Alexey Edelev
Keyword(s):  
Invariant Measures ◽  
Transportation Network ◽  
Supply System ◽  
Gas Pipelines ◽  
Short Term ◽  
Gas Industry ◽  
Reducing Gas ◽  
Critical Facilities ◽  
Gas Supply

The article is devoted to the search and identification of possible invariant measures aimed at reducing gas shortages among consumers in the event of emergencies at critical facilities of the gas industry. The study was carried out on the example of the Unified Gas Supply System of Russia and is a logical development of the topic of searching and identifying critical objects of the system. The article presents a list of the most common sections of gas pipelines, the throughput of which is insufficient in the situations under consideration. As measures to reduce gas shortages among consumers in emergencies at critical facilities, the expediency of both a short-term increase in the throughput of the sections and the laying of additional sections of main gas pipelines is shown. Conclusions are drawn on the need to search for such sections of gas pipelines and to apply measures to them aimed at increasing the efficiency of the Russian gas industry in emergencies.

scholarly journals THEORETICAL SUBSTANTIATION OF THE USE OF BIOMETHANE IN GAS SUPPLY SYSTEMS

2021 ◽  
Vol 6 (11) ◽  
pp. 49-57
Author(s):  
D. Suslov
Keyword(s):  
Alternative Energy ◽  
Supply System ◽  
Operating Conditions ◽  
Technological Parameters ◽  
Gas Network ◽  
Theoretical Substantiation ◽  
Gas Consumption ◽  
Effective Use ◽  
Supply Systems ◽  
Gas Supply

The work is devoted to the urgent problem of using an alternative energy source of biomethane for gas supply to settlements. The effective use of biomethane in gas supply systems requires scientific substantiation, considering the entire range of technological parameters and operating conditions. The methods of graphs and parametric optimization are used to minimize the total reduced costs to the gas supply system to carry out the research. Based on the analysis of gas consumption by the municipal districts of the Belgorod region, a graphical dependence is built and an expression is obtained to determine the annual gas consumption by the population on the population size. The calculation of the mass of organic waste and the density of substrate formation is made, on the basis of which the potential for biomethane production in the municipal districts of the Belgorod region is determined. It has been established that the potential volume of biomethane in the Belgorod region is 633194 thousand m3 / year, or 11% of the total gas consumption. A diagram of the location of biomethane plants and gas pipelines for supplying biomethane to gas networks has been built. The optimal values of the technological parameters of the biomethane gas supply system have been established: the operating range of the biomethane plant depending on the substrate formation density, the length of the gas network for biomethane supply, depending on the gas consumption density.

scholarly journals Analysis of the Safety of Functioning Gas Pipelines in Terms of the Occurrence of Failures

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3228 ◽  
Author(s):  
Marek Urbanik ◽  
Barbara Tchórzewska-Cieślak ◽  
Katarzyna Pietrucha-Urbanik
Keyword(s):  
Risk Assessment ◽  
Assessment Tool ◽  
Supply System ◽  
Frequency Of Occurrence ◽  
Gas Pipelines ◽  
Risk Area ◽  
Identification Method ◽  
Se Poland ◽  
Integrated Risk ◽  
Gas Supply

The development of appropriate methods by which to assess the functioning of gas pipelines helps limits the consequences of disasters, in that way protecting users better. Assessment methods of this kind are presented in this paper, which advocates the integrated risk area identification method. The risk taken account of is understood to be a function of the probability or frequency of occurrence of undesirable events, and comes with parameters defining the consequences of these events, should they arise, in terms of their magnitude. The level of system vulnerability to events of these types is a factor considered, and the risk calculation is of a kind that encompasses both quantitative and qualitative aspects. The approach taken is regarded as a quick and simple risk-assessment tool applicable to the daily operation of gas networks for a gas company. Specifically, the framework of the research carried out extends to: (1) Estimation of the average cost of failure of gas pipelines in the case of an urban agglomeration in SE Poland; (2) assessment of the level of integrated risk facing the gas-supply subsystem, by reference to the risk area identification method; (3) failure forecasting by way of regressions with delay; and (4) conclusions regarding failure risk assessment in a gas-supply network, as well as a consideration of prospects. The framework referred here, thus constitutes the basis for both analysis and assessment of the safety of a gas-supply system.

scholarly journals Improving the quality of gas supplies to consumers when performing repair work on gas pipelines-branches

2021 ◽  
pp. 44-48
Author(s):  
I. A. Battalov ◽  
◽  
Ya. V. Denisova ◽  
V. F. Sopin ◽  
◽  
...  
Keyword(s):  
System Development ◽  
Supply System ◽  
Gas Pipelines ◽  
High Quality ◽  
Repair Work ◽  
Fuel Supply ◽  
Regulatory Documents ◽  
Fuel Supply System ◽  
Gas Supply

Providing consumers with high-quality gas supply services envisages ensuring uninterrupted fuel supply during repair work on gas pipelines - branches. In this regard, the purpose of this study is to consider the organization of the backup fuel supply system for the specified period and develop proposals for its improvement. Achievement of this goal determines the solution of the following tasks: study of regulatory documents in the field of gas supply, consideration of existing options for organizing a backup fuel supply system, development of proposals for their improvement, assessment of the effectiveness of the proposed measures. Based on the results of the study, in order to ensure the provision of high-quality services to consumers for the uninterrupted supply of gas, as an alternative, it is proposed to consider gas supply using mobile automobile gas refuellers and a reducing device. The advantages of using this method and the possible effect of its implementation are noted

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).

Reliability of integrated electricity and gas supply system with performance substitution and sharing mechanisms

2021 ◽  
Vol 212 ◽  
pp. 107587
Author(s):  
Ye Ma ◽  
Yuanying Chi ◽  
Di Wu ◽  
Rui Peng ◽  
Shaomin Wu
Keyword(s):  
Supply System ◽  
Gas Supply

scholarly journals Sensors Integrated Control of PEMFC Gas Supply System Based on Large-Scale Deep Reinforcement Learning

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 349
Author(s):  
Jiawen Li ◽  
Tao Yu
Keyword(s):  
Reinforcement Learning ◽  
Large Scale ◽  
Integrated Control ◽  
Supply System ◽  
Proton Exchange ◽  
Coordination Problem ◽  
Hydrogen Flow ◽  
Model Free ◽  
Integrated Controller ◽  
Gas Supply

In the proton exchange membrane fuel cell (PEMFC) system, the flow of air and hydrogen is the main factor influencing the output characteristics of PEMFC, and there is a coordination problem between their flow controls. Thus, the integrated controller of the PEMFC gas supply system based on distributed deep reinforcement learning (DDRL) is proposed to solve this problem, it combines the original airflow controller and hydrogen flow controller into one. Besides, edge-cloud collaborative multiple tricks distributed deep deterministic policy gradient (ECMTD-DDPG) algorithm is presented. In this algorithm, an edge exploration policy is adopted, suggesting that the edge explores including DDPG, soft actor-critic (SAC), and conventional control algorithm are employed to realize distributed exploration in the environment, and a classified experience replay mechanism is introduced to improve exploration efficiency. Moreover, various tricks are combined with the cloud centralized training policy to address the overestimation of Q-value in DDPG. Ultimately, a model-free integrated controller of the PEMFC gas supply system with better global searching ability and training efficiency is obtained. The simulation verifies that the controller enables the flows of air and hydrogen to respond more rapidly to the changing load.

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