Process model of formation of the project charter for plasma-chemical elements creation for prospective energy systems

2017 ◽  
Vol 0 (1) ◽  
Author(s):  
Kateryna S. Burunsuz
Keyword(s):  
Process Model ◽  
Chemical Elements ◽  
Energy Systems ◽  
Plasma Chemical

scholarly journals РАЗРАБОТКА ЭЛЕМЕНТОВ МОДЕЛИ УПРАВЛЕНИЯ ПРОЕКТОМ СОЗДАНИЯ ПЛАЗМОХИМИЧЕСКИХ УСТРОЙСТВ ДЛЯ ЭНЕРГЕТИЧЕСКИХ УСТАНОВОК

2018 ◽  
pp. 75-79
Author(s):  
Екатерина Сергеевна Бурунсуз
Keyword(s):  
Project Management ◽  
Process Model ◽  
Power Plants ◽  
Production Systems ◽  
Chemical Elements ◽  
Risk Indicators ◽  
Plasma Chemical ◽  
International Projects ◽  
The Creation ◽  
Initiation Stage

The basic elements of the project management model for the creation of plasma-chemical elements for power plants have been developed. It is shown that the main features of science-intensive projects for the development of energy systems using plasma-chemical elements are: significant complexity of organizational production systems; significant uncertainty of project states and a high probability of risks arising from the influence of factors that cannot be envisaged in the management process; the uniqueness and high cost of the industrial and intellectual resources involved, as well as the problems of cooperation in the context of International projects. A process model for forming the Statute of the project for creation of plasma-chemical devices for power plants was developed to establish information relationships between control processes of one and the different levels, performance indicators, control over their implementation, as well as visualization of processes in the form of detailed subprocesses. The identification of the main risks of project management for the creation of plasma-chemical elements for environmentally friendly power plants in accordance with the life cycle phases has been identified. The risk indicators of projects at macro level, market and project levels have been developed; interconnections and hierarchies between different factors have been established. In order to substantiate the selection of the most significant criteria, a hierarchy analysis method was used, which determined the importance of the criteria for the project team for the creation of a plasma-chemical elements. It has been determined that the own vectors of the criteria are: strategic 39.1%, financial and economic 31%, environmental 16.3%, functional and technological 10.1%, others 3.6%. The developed model takes into account the specific conditions of operation of plasma installations and enables to determine the local and global probabilities of their occurrence at the initiation stage of the project, and also to develop arrangements to minimize their impact on the indicators of the project effectiveness

scholarly journals ОЦЕНКА ИНВЕСТИЦИОННОЙ ЦЕЛЕСООБРАЗНОСТИ ПРОЕКТА СОЗДАНИЯ ЭНЕРГЕТИЧЕСКОГО КОМПЛЕКСА ПО ПЛАЗМОХИМИЧЕСКОЙ ПЕРЕРАБОТКЕ УГЛЯ В УСЛОВИЯХ НЕОПРЕДЕЛЕННОСТЕЙ

2018 ◽  
pp. 59-63
Author(s):  
Екатерина Сергеевна Бурунсуз
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Power Plant ◽  
Economic Efficiency ◽  
Chemical Elements ◽  
Thermal Power ◽  
Successful Implementation ◽  
Plasma Chemical ◽  
International Projects ◽  
The Creation

Successful implementation of international projects for the creation of energy complexes with plasma-chemical treatment of coal into synthesis gas and its using as fuel for gas turbine engines requires large capital investments. In this connection, the use of the Monte Carlo method during assessing the investment feasibility and efficiency of implementation of similar projects in conditions of uncertainties and risks presents applied and scientific interest.The Monte Carlo method makes it possible to use a representative sample of scenarios and not to search through all possible variants of the development of events in the future. The merits include the linear dependence of the number of simulations on the number of financial instruments and the ability to take into account both economic and technical indicators. It is determined that the strategic criteria for the success of the project can prevail in relation to economic and functional-technological, especially in the case of the development of a new environmentally friendly plasma-assisted technology. A theoretical model for estimating the economic efficiency of the project for creation of energy complex using inductive (radio frequency) plasma generators has been developed. Parameters characterizing the economic efficiency of proposed power plant with plasma-chemical gasification of coal are analyzed. The project efficiency depends significantly on the parameters characterizing the investment and discounting conditions. The estimation of economic efficiency of the investment project using plasma-chemical technology on a thermal power station with produced electric power of 3.9 MW is carried out. For the considered project conditions, the calculated average value of the profitability index for a power plant with plasma-chemical gasification of coal for 15 years is equaled 1.19 with a probability of 76%. The developed theoretical models can be used to solve problems of enhancement and optimization of management of international projects for the creation of plasma-chemical elements in conditions of uncertainties and risks

scholarly journals Scalable Microgrid Process Model: The Results of an Off-Grid Household Experiment

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7139
Author(s):  
Sylwia Sysko-Romańczuk ◽  
Grzegorz Kluj ◽  
Liliana Hawrysz ◽  
Łukasz Rokicki ◽  
Sylwester Robak
Keyword(s):  
Computer Simulation ◽  
Energy Balance ◽  
Process Model ◽  
Large Scale ◽  
Energy Systems ◽  
Experimental Simulation ◽  
Positive Energy ◽  
Conditional Stability ◽  
Low Carbon ◽  
Scale Integration

The security of national energy systems as well as the transition to a low-carbon future are two hot topics of discussion in the international political arena. Research on the stability of centralized energy systems is currently focused on distributed generation. Developing a scalable microgrid model enabling its massive adoption is one of the safest and feasible ways to solve such problem. The paper aims to fill an existing gap regarding the operation model of microgrids that is a barrier for the large-scale integration of those in the conventional grid network. In the proposed approach the authors identified key processes to be considered when operating microgrids, in the conditions shown through an experimental (simulation) campaign. A three-phase research was performed: (1) systematic literature review to explore the management models of a stand-alone microgrid design and management; (2) a household experiment; and (3) a computer simulation of energy balance for a selected household. We identified eight key processes constituting a scalable microgrid: five core processes, two supporting processes, and one management process. Subsequently, we developed a map of these processes obtaining a microgrid process model for massive adoption. The model of processes can be considered as a repeatable pattern of conduct in the creation and maintenance of microgrids, which their future owners can follow. To support our literature findings, we performed an experiment and a computer simulation of three sub-processes of the (re)design of the infrastructure process: (1) wind turbine selection, (2) photovoltaic power plant selection, and (3) energy-storage selection. Results confirm conditional stability of the analyzed microgrid and the need for cyclical simulation exercises until unconditional stability is achieved. In terms of sustainability, to keep the microgrid permanently in a positive energy balance will require the implementation of all key processes.

scholarly journals Information System for the Management of Off-Grid Renewable Energy Systems for Decentralized Consumers

2021 ◽  
Vol 110 ◽  
pp. 05006
Author(s):  
Irina Usacheva
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Process Model ◽  
Energy Systems ◽  
Automated Control ◽  
Renewable Energy Systems ◽  
Automated Control System ◽  
Database Structure ◽  
Local Facility ◽  
Technical Features

The paper studies technical features of managing off-grid renewable energy systems; analyses principles of building a resource-process model of energy supply for a local facility with several energy sources; shows a conceptual scheme of the proposed direct current microgrid; develops a database structure of automated control system of off-grid energy systems in SQL.

scholarly journals Diagnosis of Missed Ductile Iron Melts with Process Modelling

2017 ◽  
Vol 17 (4) ◽  
pp. 123-126
Author(s):  
M. Perzyk ◽  
M. Werlaty
Keyword(s):  
Ductile Iron ◽  
Process Model ◽  
Chemical Elements ◽  
Classification Tree ◽  
Data Driven ◽  
Support Vector ◽  
Single Element ◽  
Tree Model ◽  
Data Set ◽  
Classification Tree Model

AbstractThe paper presents an application of advanced data-driven (soft) models in finding the most probable particular causes of missed ductile iron melts. The proposed methodology was tested using real foundry data set containing 1020 records with contents of 9 chemical elements in the iron as the process input variables and the ductile iron grade as the output. This dependent variable was of discrete (nominal) type with four possible values: ‘400/18’, ‘500/07’, ‘500/07 special’ and ‘non-classified’, i.e. the missed melt. Several types of classification models were built and tested: MLP-type Artificial Neural Network, Support Vector Machine and two versions of Classification Trees. The best accuracy of predictions was achieved by one of the Classification Tree model, which was then used in the simulations leading to conversion of the missed melts to the expected grades. Two strategies of changing the input values (chemical composition) were tried: content of a single element at a time and simultaneous changes of a selected pair of elements. It was found that in the vast majority of the missed melts the changes of single elements concentrations have led to the change from the non-classified iron to its expected grade. In the case of the three remaining melts the simultaneous changes of pairs of the elements’ concentrations appeared to be successful and that those cases were in agreement with foundry staff expertise. It is concluded that utilizing an advanced data-driven process model can significantly facilitate diagnosis of defective products and out-of-control foundry processes.

Nuclear Processes Related to the Ap Stars and the Heaviest Chemical Elements

1976 ◽  
Vol 32 ◽  
pp. 169-182
Author(s):  
B. Kuchowicz
Keyword(s):  
Nuclear Physics ◽  
Nuclear Reactions ◽  
Chemical Elements ◽  
Fission Products ◽  
Abundance Pattern ◽  
Isotopic Shifts ◽  
Processed Material ◽  
R Process ◽  
Ap Stars ◽  
Nuclear Processes

SummaryIsotopic shifts in the lines of the heavy elements in Ap stars, and the characteristic abundance pattern of these elements point to the fact that we are observing mainly the products of rapid neutron capture. The peculiar A stars may be treated as the show windows for the products of a recent r-process in their neighbourhood. This process can be located either in Supernovae exploding in a binary system in which the present Ap stars were secondaries, or in Supernovae exploding in young clusters. Secondary processes, e.g. spontaneous fission or nuclear reactions with highly abundant fission products, may occur further with the r-processed material in the surface of the Ap stars. The role of these stars to the theory of nucleosynthesis and to nuclear physics is emphasized.

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