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Kler A.M.,RAS Energy Systems Institute | Potanina Y.M.,RAS Energy Systems Institute
Energy | Year: 2017

One of the ways to enhance the energy efficiency of thermal power plants is to increase thermodynamic parameters of steam. A sufficient level of reliability and longevity can be provided by the application of advanced construction materials (in particular, high-alloy steel can be used to manufacture the most loaded heating surfaces of a boiler unit). A rational choice of technical and economic parameters of energy plants as the most complex technical systems should be made using the methods of mathematical modeling and optimization. The paper considers an original approach to an economically sound optimal choice of steel grade to manufacture heating surfaces for boiler units. A case study of optimization of the discrete-continuous parameters of an energy unit operating at ultra-supercritical steam parameters, in combination with construction of a variant selection tree is presented. © 2017 Elsevier Ltd

Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENERGY.2008.7.2.1 | Award Amount: 4.79M | Year: 2009

The interstate integration of power grids provides multiple advantages concerning operation security, integration of renewable energy as well as energy trading. Due to this fact the UCTE interconnection expands continually since its establishment. Consideration is given to different scenarios of joint operation of UCTE and NORDEL with power grids on the territory of the former USSR. Due to the fact that such an interconnection is second to none in the World in terms of the scale and distance of the interconnection and number of countries involved, strong R&D and innovations are urgently required along with the recent development of technologies. Bulk power grids may encounter major blackouts, which originate in increasing complication in monitoring, operation and control of interconnected power grids as well as in limited knowledge of the total system state. Therefore the possible future interconnection between the European and Russian electricity transmission systems requires elaborating methods for monitoring, control and protection of large scale systems and especially for the support of their interconnections. The development and prototypically implementation of these new methods and tools is the major goal of the ICOEUR project. New technologies like Wide Area Monitoring, Control and Protection as well as advanced network controllers (FACTS) and HVDC systems will be considered. Envisioned ICOEUR goals can be achieved only in close cooperative work of experts, with extensive knowledge of EU and Russian power systems as well as manufacturers and network operators. The ICOEUR consortium involves leading experts in all these domains and guarantees efficient collaboration and knowledge required for testing the methodologies developed. The joint development of innovative monitoring, simulation and control concepts, tools and equipment through international diversified ICOEUR consortium and their prototype implementation will promote their adoptions.

Marchenko O.V.,RAS Energy Systems Institute
International Journal of Low-Carbon Technologies | Year: 2010

A mathematical model has been developed to describe an autonomous energy system including energy plants (technologies) of two types: energy conversion (transport) and energy (energy carriers) storage. At the conversion plants, primary and secondary energy is converted into final energy and secondary energy of another type; in energy storages, secondary energy is accumulated for its further utilization. The mathematical programming problem is formulated; the objective function is the total discounted costs of the system creation and operation. The variants of the optimal structure of an energy system, including a diesel power plant, a biomass-fueled power plant and wind turbines, were found, depending on the price of diesel fuel and wind speed. © The Author 2010. Published by Oxford University Press. All rights reserved.

Marchenko O.V.,RAS Energy Systems Institute | Solomin S.V.,RAS Energy Systems Institute
International Journal of Hydrogen Energy | Year: 2015

Theoretically there can be different ways of the green (carbon-free) energy development aimed at providing sustainable development of humankind in the future, in particular hydrogen economy or electricity economy. In this paper the processes of hydrogen and electricity production, conversion and storage are compared in terms of energy and economic expenditure for each stage of these technologies. The assessment shows that the electricity economy proves more preferable in the case of short-term energy storage, whereas the use of hydrogen is more beneficial in the case of long-term storage. This is indicative of the fact that the hydrogen economy and electricity economy can coexist in the energy of the future and each energy carrier can find its application area. Copyright © 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Minarchenko I.,RAS Energy Systems Institute
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016

This paper is devoted to Nash equilibrium search in quadratic n-person game, where payoff function of each player is quadratic with respect to its strategic variable. Interactions between players are defined by corresponding bilinear terms in the payoffs. First, the statement is considered without any assumptions on payoffs’ concavity. We use Nikaido-Isoda approach in order to reduce Nash equilibrium problem to optimization problem with nonconvex implicitly defined objective function. We propose global search algorithm based on the linearization of implicit part of the objective by linear support minorants. This technique allows to determine numerically whether the game has no equilibria. Then payoffs are assumed to be concave with respect to its strategic variables, and we suggest d.c. decomposition of the objective, thus corresponding local search method is applicable. Computational results are provided in the paper. Local search method is compared with extragradient equilibrium search algorithm. © Springer International Publishing Switzerland 2016.

Aizenberg N.,RAS Energy Systems Institute
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016

The paper studies the trade in the spot electricity market based on submitting bids of energy consumers and producers to the market operator. We investigate supply function equilibrium (SFE) model, in which generation capacities are integrated into large generation companies that have a common purpose of maximizing their profits. For this case we prove the existence and uniqueness of equilibrium for a linear function of aggregate demand and quadratic costs. The mechanism is tested on the basis of the Siberian electric power system, Russia. © Springer International Publishing Switzerland 2016.

Shalaginova Z.I.,RAS Energy Systems Institute
Thermal Engineering | Year: 2016

The mathematical model and calculation method of the thermal-hydraulic modes of heat points, based on the theory of hydraulic circuits, being developed at the Melentiev Energy Systems Institute are presented. The redundant circuit of the heat point was developed, in which all possible connecting circuits (CC) of the heat engineering equipment and the places of possible installation of control valve were inserted. It allows simulating the operating modes both at central heat points (CHP) and individual heat points (IHP). The configuration of the desired circuit is carried out automatically by removing the unnecessary links. The following circuits connecting the heating systems (HS) are considered: the dependent circuit (direct and through mixing elevator) and independent one (through the heater). The following connecting circuits of the load of hot water supply (HWS) were considered: open CC (direct water pumping from pipelines of heat networks) and a closed CC with connecting the HWS heaters on single-level (serial and parallel) and two-level (sequential and combined) circuits. The following connecting circuits of the ventilation systems (VS) were also considered: dependent circuit and independent one through a common heat exchanger with HS load. In the heat points, water temperature regulators for the hot water supply and ventilation and flow regulators for the heating system, as well as to the inlet as a whole, are possible. According to the accepted decomposition, the model of the heat point is an integral part of the overall heat-hydraulic model of the heat-supplying system having intermediate control stages (CHP and IHP), which allows to consider the operating modes of the heat networks of different levels connected with each other through CHP as well as connected through IHP of consumers with various connecting circuits of local systems of heat consumption: heating, ventilation and hot water supply. The model is implemented in the Angara data-processing complex. An example of the multilevel calculation of the heat-hydraulic modes of main heat networks and those connected to them through central heat point distribution networks in Petropavlovsk-Kamchatskii is examined. © 2016, Pleiades Publishing, Inc.

Natalia A.,RAS Energy Systems Institute
Procedia Computer Science | Year: 2014

The paper considers mechanisms for organizing free trade in the electricity market, which are based on submitting bids of energy consumers and producers to the market operator. The research focuses on the models of market operation as a double sided auction where participants have different rights (price takers and active competitors). The authors discuss and compare possible strategies of generator behavior that lead to different equilibrium situations and correspond to Cournot model and the models of supply function equilibrium, and a perfectly competitive equilibrium. The mechanisms are tested on the basis of the Siberian electric power system, Russia. © 2014 Published by Elsevier B.V.

Palamarchuk S.,RAS Energy Systems Institute
IET Generation, Transmission and Distribution | Year: 2010

Bilateral forward contracts are generally used in electricity markets to stabilise prices and hedge electricity shortage risks. A contract party is able to draw electricity from the contract and resell it to the day-ahead wholesale and retail markets. Contract parties schedule electricity deliveries over contract period to obtain the highest profit and estimate the acceptable contract price. Two types of contracts are introduced as a way to coordinate interests of the contract parties. The study formulates optimisation problems for contract scheduling. The stochastic dynamic programming technique is proposed as a numerical method for the problem solving. An algorithm based on preliminary construction of revenue functions is developed. A numerical example demonstrates the efficiency of the algorithm. © 2010 © The Institution of Engineering and Technology.

Borokhov V.,RAS Energy Systems Institute
IEEE Transactions on Power Systems | Year: 2015

We establish sufficient conditions for nodal price response matrix in electric power system to be symmetric and negative (semi-)definite. The results are applicable for electricity markets with nonlinear and intertemporal constraints. © 2014 IEEE.

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