scholarly journals SIMULATION OF NATURAL QUALITY MANAGEMENT GAS USING ADJUSTMENT FUNCTIONS LINGUISTIC VARIABLES BY PARETO METHOD

2021 ◽  
pp. 235-249
Author(s):  
Kostiantyn Predun ◽  
Yurii Franchuk ◽  
Olha Obodianskaya
Keyword(s):  
Natural Gas ◽  
Distribution Systems ◽  
Green Energy ◽  
Fuel Quality ◽  
Linguistic Variables ◽  
Gas Distribution ◽  
Technological Support ◽  
Factors Influencing ◽  
Pareto Method

Natural gas in accordance with the provisions of the Energy Strategy of Ukraine for the period up to 2035, despite the significant development of "green" energy remains the main energy source in the country. Due to the accession to the single European area of regulation of natural gas trade in the country, all calculations for fuel consumption should be performed in units of energy. Thus, the defining issues are the quality of natural gas. One of the features of the gas supply system is a  significant degree of uncertainty in the change of a large number of disturbing factors and constantly changing parameters of its operation. Among others, a mathematical model based on the theory of fuzzy logic was chosen to assess quality. Based on the results of consideration of factors characterizing the physical and chemical properties of natural gas extracted from the field, the quality of its preparation for transportation and technical conditions of operation of the gas distribution system of the settlement, a fuzzy set was obtained to determine fuel quality. One of the methods of analysis in complex and multiconnected systems is the Pareto method, which consists in classifying problems into a few, but essential, and numerous, but insignificant. Modeling the management of natural gas quality using the membership functions of linguistic variables, which are the factors influencing it by the Pareto method, allows to vary the most significant factors that take into account the most influential of them. The resulting Pareto bar chart clearly illustrates the number of factors influencing the quality of natural gas. The diagram shows that the most influential factors on the quality of natural gas and on reducing the operational reliability of gas transmission and gas distribution systems are, respectively, higher heat of combustion under standard conditions and fuel moisture content. In this regard, in the organizational and technological support of natural gas consumption at a high level, they should be considered in the first place. 

scholarly journals Optimal Expansion Co-Planning of Reconfigurable Electricity and Natural Gas Distribution Systems Incorporating Energy Hubs

Energies ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 124 ◽  
Author(s):  
Xianzheng Zhou ◽  
Chuangxin Guo ◽  
Yifei Wang ◽  
Wanqi Li
Keyword(s):  
Natural Gas ◽  
Distribution Systems ◽  
Gas Distribution

scholarly journals Repair Failures Call for New Policies to Tackle Leaky Natural Gas Distribution Systems

2021 ◽  
Author(s):  
Morgan R. Edwards ◽  
Amanda Giang ◽  
Gregg P. Macey ◽  
Zeyneb Magavi ◽  
Dominic Nicholas ◽  
...  
Keyword(s):  
Natural Gas ◽  
Distribution Systems ◽  
Gas Distribution ◽  
New Policies

Assessment Procedure of Technological Consumption in the Natural Gas Distribution Systems

2013 ◽  
Vol 371 ◽  
pp. 586-590 ◽  
Author(s):  
Ion Pană ◽  
Mihail Minescu
Keyword(s):  
Natural Gas ◽  
Distribution Systems ◽  
Statistical Study ◽  
Environmental Issues ◽  
Assessment Procedure ◽  
Gas Distribution

This paper proposes a procedure of calculus of the technological consumption, usefully for the operators of the natural gas distribution systems. It also sets, based on a statistical study, the minimum possible value of the technological consumption for the operators of natural gas distribution in Romania. There are indicated the environmental issues resulting from the technological consumption and the measures to control and reduce it.

scholarly journals PROBLEMS ISSUES OF REGULATORY PROVISION OF PRODUCTION ACTIVITY OF NATURAL GAS MARKETS

2019 ◽  
pp. 48-58
Author(s):  
A. M. Klyun ◽  
G. M. Kogut ◽  
M. O. Karpash ◽  
О.М. Karpash
Keyword(s):  
Natural Gas ◽  
Distribution System ◽  
Distribution Systems ◽  
Gas Distribution ◽  
Normative Documents ◽  
Natural Gas Market ◽  
Supply And Distribution ◽  
International Trends ◽  
Gas Market ◽  
The Eu

The formation of the modern Ukrainian natural gas market is accompanied by profound transformations of the national gas infrastructure: the creation and operation of new market operators, the redistribution of infrastructure facilities, the development and implementation of new requirements for the effective functioning of the entire system. At the same time, this requires from all parties a verified and balances strategy for the optimal implementation of all the obligations that Ukraine has undertaken to fully implement the requirements of the EU Third Energy Package, which aims to create an effective natural gas market based on the principles of free competition, proper consumer protection and security of supply. Despite the fact that the capacity of the Ukrainian gas transmission system and gas storages is one of the largest in Europe, the unbanding process has caused a number of threats in the area of regulatory support for production activities, requiring the consolidation of specialists' efforts to form optimal solutions to the problems that have arisen. In addition, the lengthy process of reforming and reorganizing the Ukrainian gas distribution system has led to a situation where the work of a natural gas distribution operator is facing a risk of imbalance in terms of inefficient standardization of the main areas of operation to meet the EU legislation requirements implemented in Ukraine. Therefore, to develop basic directions for the future work of gas infrastructure operators, it is necessary to take into account the acting capabilities of existing system for transportation, underground storage and gas distribution (taking into account the significant number of standardized indicators defined by the existing normative documents of the former USSR) and in accordance with the trends in the development of the European gas infrastructure introduce economically and technically feasible measures to standardize performance activities. Such works have to be incorporated into integrated research programs, during which regional and international trends are to be taken into account and adapted, the results of which will be the basis for future roadmaps and programs for the development of natural gas supply and distribution systems.

scholarly journals SOME ASPECTS OF PREVENTION OF CRYSTALLINE HYDRATES FORMATION AT GAS DISTRIBUTION STATIONS

2017 ◽  
Vol 21 (3) ◽  
pp. 68-74
Author(s):  
V. S. Ezhov ◽  
G. G. Shchedrina ◽  
N. E. Semicheva
Keyword(s):  
Natural Gas ◽  
Distribution Systems ◽  
Integrated Treatment ◽  
Crystalline Hydrate ◽  
Gas Pipelines ◽  
Gas Distribution ◽  
Treatment Unit ◽  
Natural Gas Dehydration ◽  
Gas Supply ◽  
Crystalline Hydrates

The existing methods for natural gas dehydration both in fields and at compressor stations cannot always provide standatdized values of natural gas dehydration. The analysis of operation of gas distribution systems shows that dehydration units are improperly placed and are often installed out of condensation and freezing zones. This is due to the lack of consideration of phase transitions impact in gas throttling on its temperature condition. Due to insufficient natural gas dehydration, crystalline hydrates can be formed on wellbores, distribution lines and main gas pipelines and at its reduction, disturbing the operation of the equipment of compressor stations, gas distribution stations, deranging instrumentation and automation. The issues of reliability of gas pipeline systems considering the formation of crystalline hydrate plugs in pipelines have been studied. The analysis of the methods and devices preventing hydrates formation and eliminating existing crystalline hydrate plugs has shown that to provide normalized parameters of the transported gas it is necessary to perform additional water vapor, condensate drops and crystalline hydrate particles removal from natural gas at gas distribution stations during winter months. Currently applied methods used to deal with crystalline hydrate plugs in main gas pipelines require significant expenses and do not effectively ensure the reliability of pipelines operation. An energy-efficient design of an integrated treatment unit which provides an additional natural gas treatment at GDS, increases the reliability of gas pipelines protection against hydrate blockage and improves the efficiency of gas supply systems as a whole have been proposed at the Department of Heat and Gas Supply and Ventilation of the SWSU.

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