scholarly journals Simulation model of natural gas supply chain in a function of costs optimization: the case of Croatia

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Dario Šebalj
Keyword(s):  
Natural Gas ◽  
Simulation Model ◽  
Distribution System ◽  
Initial Step ◽  
Transmission System ◽  
Technical Solution ◽  
Gas Consumption ◽  
And Control ◽  
Hourly Basis ◽  
Gas Supply

AbstractThe purpose of this study is to develop a natural gas simulation model for costs optimization. The main focus of the model is on the transmission system since its imbalance leads to the penalties which must be paid by the suppliers. The total nominated amount of natural gas (the gas injected into the transmission system) must be consumed (withdrawn from the system) in order for the system to be in balance. In practice, this is not the case since it is very hard to accurately predict the future hourly consumption (in order to make a nomination) and certain deviations appear which leads to the imbalance. However, this problem could be solved by introducing a special electromotor valve which would be placed at the beginning of the distribution system and control the accumulation of the system. To test this solution, a simulation model was created using Arena Simulation tool. Data for the simulation model are collected by the natural gas distributor and consist of natural gas consumption and nomination values for one measuring-reduction station on the hourly basis. Thus, the final dataset includes 8.754 records. The separate As-Is and To-Be models for seven (summer) months were made and the results were compared. The simulation experiment shows that the positive rebalancing energy would be reduced by 32%, and the negative one by 34%. The created model can serve as a good initial step for the analysis of the justification of investment in the implementation of a technical solution that would manage the accumulation of the distribution system.

scholarly journals Natural gas supply for industrial enterprises in the conditions of the Russian market: current state and development trends

2019 ◽  
Vol 124 ◽  
pp. 05040
Author(s):  
N.V. Varlamov ◽  
I.A. Kirshina
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Electric Power Industry ◽  
State Budget ◽  
Russian Market ◽  
Existing Problems ◽  
Industrial Enterprises ◽  
Current State ◽  
Gas Consumption ◽  
Gas Supply

The article considers the existing problems in natural gas supply for industrial enterprises in the Russian market. The analysis is performed with regards to the use of natural gas in various sectors of economy. Gas consumption in electric power industry and metallurgy is growing at the highest rate. Gasification of the Russian regions leads to the dynamic development of gas distribution system. The use of natural gas in industry makes a significant contribution to the state budget and to the socio-economic situation in the regions.

scholarly journals Analysis of Natural Gas Consumption Interdependence for Polish Industrial Consumers on the Basis of an Econometric Model

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7649
Author(s):  
Tomasz Chrulski ◽  
Mariusz Łaciak
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Econometric Model ◽  
Energy System ◽  
Transmission System ◽  
Gaseous Fuel ◽  
Hard Coal ◽  
Published Data ◽  
Gas Consumption ◽  
Natural Gas Consumption

The transmission of natural gas is a key element of the Polish energy system. The published data of the Polish distribution system operators and the transmission system operator on the volume of gaseous fuel transmitted indicate a growing trend in the consumption of energy produced from natural gas. In connection with the energy transformation, switching energy generation sources from hard coal to natural gas in Poland, it is important for transmission operators to know the future demand for gaseous fuel. The aim of the article is to attempt to develop an econometric model related to the consumption of gaseous fuel by Polish entrepreneurs. The knowledge therein may be useful for making business decisions related to the possible expansion of the transmission system, and thus investing financial resources for this purpose. This knowledge will also provide quantitative information related to the interest in gaseous fuel among industrial consumers and the analysis of the trend of natural gas consumption in Poland in the aspect of energy transition. The intention of the publication was to determine the macroeconomic indicators that strongly affect natural gas consumption by the Polish industry and the quantitative growth of consumption depending on changes in these indicators. The results showed that the highest correlation of the growth of natural gas consumption is related to the production of chemistry, the chemical industry, and the power industry.

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).

scholarly journals Natural Gas Metering and its Accuracy in the Smart Gas Supply Systems

2020 ◽  
Vol 57 (5) ◽  
pp. 39-50
Author(s):  
J. Savickis ◽  
L. Zemite ◽  
I. Bode ◽  
L. Jansons
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Successful Implementation ◽  
Smart Metering ◽  
The European Union ◽  
Smart Meters ◽  
Member States ◽  
Consumption Data ◽  
Supply Systems ◽  
Gas Supply

AbstractThe successful implementation of smart metering in the European Union (hereinafter – EU) depends on criteria that are mostly determined by the Member States themselves. These criteria cover the regulatory framework and legislation necessary for the establishment and functioning of the smart metering system, the fulfilment of technical and commercial conditions, as well as the security of data collection, archiving and use. The introduction of the smart metering in different Member States has started at different times. In Latvia, its reference point was 2004, when the goal was set to maximise the use of telemetry in the natural gas metering. Currently, in the Latvian natural gas distribution system about 85 % of all consumption data are automatically processed.One of the most important components of the smart natural gas metering is natural gas commercial metering devices (hereinafter – smart meters). They differ in both the principle and type of operation. Depending on the technology used, the metering range changes, and thus the accuracy of the measurements.The article addresses some issues of further successful implementation of smart metering in the Latvian natural gas sector, as well as the measurement accuracy for smart natural gas meters.

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.

ANALYSIS OF ENERGY SAVING WORK AT COMPRESSOR STATIONS OF MAIN GAS PIPELINES

2017 ◽  
Author(s):  
Gulnaz Moldabayeva ◽  
◽  
Raikhan Suleimenova ◽  
Mukan Sadvakasov ◽  
◽  
...  
Keyword(s):  
Optimal Control ◽  
Natural Gas ◽  
Energy Saving ◽  
Energy Efficient ◽  
Transmission System ◽  
Gas Pipelines ◽  
Rational Use ◽  
Priority Areas ◽  
Efficient Management ◽  
Gas Supply

Currently, the national operator of gas supply in Kazakhstan pays special attention to the rational use of natural gas for its own and technological needs while maintaining optimal control of the gas transmission system, taking into account the specific technical situation of the equipment. Energy efficient management of gas pipelines is one of the priority areas for optimizing gas costs.

Methods of calculation and testing of gas equipment. Lecture № 6. Part 5. Test method of gas equipment for CNG operation

2020 ◽  
Keyword(s):  
Natural Gas ◽  
Technological Process ◽  
Test Methods ◽  
Test Method ◽  
Schematic Diagram ◽  
Compressed Natural Gas ◽  
Certification Tests ◽  
Gas Cylinder ◽  
And Control ◽  
Gas Supply

The method of testing the gas supply systems of HBA for tightness and strength of connections is described. A schematic diagram of CNG accumulation is presented. Diagrams of test stands for compressed natural gas equipment are presented. A schematic diagram of checking the tightness of a singlefuel compressed natural gas supply system is presented. The technological process of checking the tightness of gas cylinder equipment in production conditions is presented. The technological process of inspection of a highpressure cylinder is given. The scheme of certification tests of a cylindrical CNG gas cylinder is shown. The scheme of certification and control of production of CNG cylinders is given. The diagram for testing and tightness of a twostage compressed natural gas reducer is given. Keywords rules and test methods; leakproofness; certification; singlefuel and dualfuel system; compressed natural gas; test modes; certification tests of the cylinder and gas equipment components; destruction of the cylinder

Using Machine Learning Tools for Forecasting Natural Gas Market Demand

2020 ◽  
Author(s):  
Kai Yang ◽  
Lei Hou
Keyword(s):  
Natural Gas ◽  
Prediction Model ◽  
Evaluation Method ◽  
Gas Pipeline ◽  
Prediction Methods ◽  
Error Evaluation ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Gas Consumption ◽  
Gas Supply

Abstract Providing reliable and accurate forecasts of natural gas consumption can keep supply and demand of natural gas pipelines in balance, which can increase profits and reduce supply risks. In order to accurately predict the short-term load demand of different gas nodes in the natural gas pipeline network, a hybrid optimization strategy of integrated genetic optimization algorithm and support vector machine are proposed. Factors such as holidays, date types and weather were taken into account to build a natural gas daily load prediction model based on GA-SVM was established. A natural gas pipeline network in China includes three gas supply nodes of different user type gas is forecasted, and a variety of error evaluation method, the GA-SVM evaluation index compared with other prediction methods, and through different data set partition is discussed in the periods of peak gas and gas resources in the GA — the applicability of the SVM prediction model, the ends of a natural gas pipeline network in China includes four gas supply nodes of different user type gas is forecasted, and a variety of error evaluation method, the GA-SVM evaluation index compared with other prediction methods, The applicability of the method is also discussed by dividing different data sets. By predicting the gas load forecast of the three nodes, the results show that GA-SVM hybrid prediction model has high prediction accuracy compared with other single models, and the three gas nodes MAPE of GA-SVM is respectively 3.66%, 5.17% and 3.43%. Through further analysis, even with the data samples reduced, the winter gas peak of gas prediction can still maintain good prediction effects. The research shows that the GA-SVM model has high accuracy and strong applicability in predicting gas consumption at different nodes of the natural gas pipeline network. This study can provide a research basis for analysis of gas supply uncertainty and further gas supply reliability evaluation of pipeline network.

Simulation of Underground Gas Storage Feasibility in a Depleted Gas Reservoir

2018 ◽  
Author(s):  
Hamidreza Kakhsaz ◽  
Abdolhamid Ansari
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Supply And Demand ◽  
Gas Storage ◽  
Gas Reservoir ◽  
Household Energy ◽  
Gas Consumption ◽  
Natural Gas Consumption ◽  
Transmission And Distribution ◽  
High Share

Underground storage of natural gas is an inevitable necessity because of increasing growth of household energy consumption, the high share of natural gas in the energy basket, high costs of development of production resources, and refining. Considering the growth of demand and variation of natural gas consumption as a massive and inexpensive energy carrier, also unbalanced supply and demand for natural gas in cold seasons, there is a need for natural gas storage for preventing lack of gas during peak gas consumption. In this way, extra gas is injected into the underground reservoir during storage in summer and taken from that reservoir in the cold seasons. The creation of underground reservoirs for storing natural gas is scheduled to be implemented by the gas storage company and the vulnerability of the transmission and distribution system will be prevented by storing surplus gas in summer for reprocing in winter.

Sign in / Sign up

Export Citation Format

Share Document