18 Works

Study On Multi-Component Flows In GasTransmission Systems(Flow And Measurement Processing Models)

N. Kislenko, M. Sukharev, A. Kazak & E. Fomina
The focus of the study is on multicomponent natural gas flows through gas transmission systems (GTSs). The key objective is to determine the natural gas composition in each GTS branch. The initial data for calculation include measured natural gas components for all GTS metering points. The obtained measurements are considered to be random values due to instrument errors. Heat (calorific) value can be considered instead of natural gas components. A mathematical model has been developed...

Multilevel Modeling of Pipeline Energy Systems for Solving their Analysis and Design Problems

V. Stennikov, E. Barakhtenko & D. Sokolov
The complexity and scale of pipeline energy systems (PES) necessitate the use of multilevel (in terms of structure, problems, and methods) modeling for their analysis, calcu-lation, and optimization, which are based on the theory of hydraulic circuits (THC). This theory was originally proposed at the Melentiev Energy Systems Institute, SB RAS, and since then has been undergoing further development. The use of methodological approach-es to multilevel modeling described in this paper allows switching from large...

Energy systems as objects of hierarchical modeling

V. Stennikov, S. Senderov, B. Saneev, N. Novitsky & A. Osak
The paper covers the trends in changing of the structure and properties of the energy systems of the future that are innovations-driven in their development. The role of intelligent technologies in the transformation of energy systems is analyzed. The main directions and findings of the published research on intelligent power systems are presented.

Intelligent Technologies and Tools to Support Hierarchical Research for Justification of Strategic Decisions on Energy Development

L. Massel, N. Pyatkova & A. Massel
The paper is concerned with a general scheme of hierarchical studies aimed at substantiating the energy development. It also considers an approach to integrating the software, information support and intelligent information technologies required for research. The concept of knowledge management is proposed for the semantic integration of data, knowledge and software components. It can also be used as a methodological, fractal approach to knowledge structuring. In addition to a two-level research technology, which integrates semantic...

Hierarchical Modeling in Projection Studies of the National Energy Sector Development

Y. Kononov
The focus of the paper is the evolution of methodological tools for long-term projections of the national energy sector development. The research highlights the importance of considering the grow-ing uncertainty of the future when determining the rational hierarchy of employed economic and math-ematical models. We propose adjusting their composition and the degree of aggregation depending on the projection time frame.

Effects Of The Adoption Of Renewable Energy Sources Within The “Baikal-Khövsgöl” Cross-Border Recreation Area

I. Ivanova, V. Shakirov & N. Khalgaeva
The study provides an analysis of the current state of the power supply system within the Baikal-Khvsgl cross-border recreation area, which stands for the area spanning from the southern part of Lake Baikal to Lake Khvsgl through the Republic of Buryatia (Tunkinsky and Okinsky districts). There are a fairly large number of consumers connected to the end sections of transmission lines, as well as decentralized consumers in the area in question. The operating parameters of...

Optimization Of The Algorithm For FindingSpanning Trees Of A Graph

A. Dzhandigulov, D. Akhmetbaev & A. Akhmetbaev

Priority Directions In The Development OfCorporate GovernanceIn Russia’s Power Industry

G. Sheveleva
The study identifies the strengthening of the board of directors as a priority direction of the development of corporate governance in Russian power generating companies so as to best serve the interests of their investors. This is due to numerous non-compliances of the current corporate practice with respect to those principles of the Corporate Governance Code that they shall be in charge of. These non-compliances are identified by generalized and in-depth appraisals as per the...

A Study Of Factors Influencing The DevelopmentProspects Of The Coal IndustryIn The Eastern Regions Of Russia

A. Sokolov & L. Takaishvili

General methodological approaches to hierarchical modeling of complex systems

N. Voropai
Based on the analysis of features inherent in any complex system, including modern energy systems, this study argues for the necessity of adopting hierarchical principles of modeling of such systems when solving the tasks of substantiating their development and the way their operation is controlled. The study also provides a concise overview of general methodological research contributions that further the development of the technology behind hierarchical modeling of complex systems.

Generalized technology of hierarchical modeling of complex energy systems

N. Voropai
This study aims at investigating the technology of hierarchical modeling of large energy systems when substantiating their development and control over their operation. To build the hierarchy of models of an energy system, we rely on the property of heterogeneity of the structure of complex systems. As a proof of concept of the technology, we present a two-level hierarchy of models employed for solving the problem of substantiating the development of the Unified Energy System...

Hierarchy of Models for the Study of National and Regional Energy Security

S. Senderov, N. Pyatkova & D. Krupenev
This paper focuses on the specific features of the hierarchical approach in the energy security studies for modeling the processes of functioning and development of industry-specific energy systems within a single energy sector. The experience of developing and using hierarchical modeling in the study of reliability and survivability of energy systems is analyzed using the example of the unified gas supply system, oil system, oil product system, and the unified power system of Russia. In...

Modeling the Development Prospects of the Coal Industry of Russia and its Regions

A. Sokolov & L. Takaishvili
The paper is concerned with the approach to modeling the development prospects of the Russian coal industry. A brief overview of the simulation modeling experience is given. A profile of the Russian coal industry and its specific features are given as an object of research. A research workflow is provided. The hierarchy of levels of studying the Russian coal industry and the system of models corresponding to these levels are shown. The system of models...

Multi-level Modelingof Optimal Development andPricingin the Gas Industry

N. Ilkevich, T. Dzyubina & Zh. Kalinina
This paper studies hierarchical modeling of the optimal development of facilities of multilevel gas supply systems (GSSs), given the general issues of their aggregation and contributes corresponding development and pricing models. The models for the comprehensive development of GSSs are considered at three hierarchical levels: 1) structure optimization and investment processes 2) optimization of seasonal gas consumption, reliability analysis and synthesis 3) optimization of parameters of a facility with its reliability factored in, as illustrated...

A Method And An Algorithm For Comparing The Performance Of Reciprocating Engine Power Plants In Electric Power Systems

E. Farhadzadeh, A. Muradaliyev & S. Abdullayeva
An increase in the performance of thermal power plants is the most important and pressing issue. Its importance is due to both a permanent rise in the fuel cost and an increase in the fleet of equipment whose service life has expired. In this context, traditional methods designed to maintain the efficient operation of the equipment call for improvement. A good example of that is the recommendations of operating rules and regulations, which suggest establishing...

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