scholarly journals Technical Features of the Computing and Geo-Information System for Research of Prospective Interstate Power Grid Expansion

2021 ◽  
pp. 49-53
Author(s):  
Sergei V. Podkovalnikov ◽  
◽  
Ivan L. Trofimov ◽  
Leonid N. Trofimov
Keyword(s):  
Information System ◽  
Power Systems ◽  
Power Grid ◽  
Linear Optimization ◽  
Northeast Asia ◽  
Optimization Method ◽  
Electric Power System ◽  
Operating Modes ◽  
Technical Features ◽  
The Mathematical Model

The purpose of this paper is to present opportunities and technical features of the developed software for study of prospective Interstate Power Grid (ISPG) expansion in Northeast Asia. The mathematical model for optimization of power systems expansion and operating modes, which is the main part of the computing & geo-information system (CIS), is used. In this model, a linear optimization method is used to find optimal installed capacities by generation type mix; optimal electric ties transfer capabilities and operating modes for each electric power system in the ISPG. Annualized costs of the ISPG expansion as a whole are the value of the objective function. The obtained results of the model in tabular, graphic and cartographic forms are presented. Examples of the CIS usage for study of different scenarios of ISPG expansion in the Northeast Asia are shown.

scholarly journals Determination of reliability of power supply of ship's responsible power receivers

2020 ◽  
pp. 22-26
Author(s):  
С.Е. Кузнецов ◽  
Н.А. Алексеев ◽  
А.А. Виноградов
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Supply ◽  
Electric Power System ◽  
Time To Failure ◽  
Parallel Operation ◽  
Diesel Generator ◽  
Operating Modes ◽  
Reliability Indicators ◽  
Supply Reliability

Изложена методика расчета показателей безотказности электроснабжения (вероятности безотказного электроснабжения и средней наработки до отказа) ответственных приемников морского судна, подключаемых к аварийному электрораспределительному щиту. Методика реализована применительно к судовой электроэнергетической системе с тремя источниками электроэнергии – двумя основными дизель-генераторными агрегатами, подключенными к главному электрораспределительному щиту, и одним аварийным дизель-генераторным агрегатом, подключенным к аварийному электрораспределительному щиту. Рассмотрены различные режимы работы судовой электроэнергетической системы: при работе до первого отказа одного основного дизель-генератора, при параллельной работе двух основных дизель-генераторов, при работе одного аварийного дизель-генератора; а также после обесточивания с учетом возможности последующего включения резервного или (и) аварийного дизель генератора. Методика, с соответствующими корректировками, может быть использована для расчета показателей безотказного электроснабжения в судовых электроэнергетических системах другой комплектации. Расчет показателей безотказности электроснабжения необходим при проектировании для обеспечения требуемого уровня надежности электроснабжения судовых приемников электроэнергии, а при эксплуатации – для предупреждения отказов и планирования технического обслуживания и ремонта элементов судовых электроэнергетических систем. The methodology for calculating the indicators of the reliability of power supply (the probability of failure-free power supply and the mean time to failure) of critical receivers of a sea vessel connected to the emergency electrical switchboard is presented. The technique is implemented in relation to a ship power system with three sources of electricity - two main diesel generator sets connected to the main electrical switchboard, and one emergency diesel generator set connected to an emergency electrical switchboard. Various operating modes of the ship's electric power system are considered: during operation until the first failure of one main diesel generator, during parallel operation of two main diesel generators, during operation of one emergency diesel generator; as well as after de-energizing, taking into account the possibility of subsequent switching on of the backup and / or emergency diesel generator. The technique, with appropriate adjustments, can be used to calculate indicators of reliable power supply in ship power systems of a different configuration. Calculation of power supply reliability indicators is necessary during design to ensure the required level of power supply reliability for ship power receivers, and during operation - to prevent failures and plan maintenance and repair of elements of ship power systems.

scholarly journals The computing and information system for research of prospective electric power grids expansion

2019 ◽  
Vol 29 (4) ◽  
pp. 465-481
Author(s):  
Ivan Trofimov ◽  
Leonid Trofimov ◽  
Sergei Podkovalnikov ◽  
Lyudmila Chudinova ◽  
Lev Belyaev ◽  
...  
Keyword(s):  
Information System ◽  
Power Systems ◽  
Electric Power ◽  
Data Storage ◽  
Software Tool ◽  
Data Representation ◽  
Power Grids ◽  
Operating Modes ◽  
Wide Range ◽  
Object Oriented Database

The paper describes the software tool implemented by Melentiev Energy Systems Institute SB RAS, aimed to solve wide range of energy issues. In this article, the Computing and Information System (CIS) means a software tool that provides collection, transfer, processing, storage, geo-visualization, and output of digital technical and economic data of different energy/power entities. Besides, this tool is incorporated within a mathematical model for optimization of expansion and operating modes of power systems. The paper discusses the example of how data storage and data representation in object-oriented database assist to improve efficiency of research prospective electric power systems expansion and operation.

Energy Challenge, Power Electronics & Systems (PEAS) Technology and Grid Modernization

2019 ◽  
pp. 116-129
Author(s):  
Geetha R ◽  
Gowdhamkumar S ◽  
Yamuna ` R ◽  
S Jambulingam
Keyword(s):  
Energy Consumption ◽  
Power Systems ◽  
Electric Power ◽  
Power Electronics ◽  
Power Grid ◽  
Modern Society ◽  
Electric Power Systems ◽  
Electric Power System ◽  
Total Energy Consumption ◽  
Energy Challenge

Modern society has reached a point where virtually every crucial economic and social function depends on the secure and reliable operation of the electrical power and energy infrastructures. The energy consumption growth and the population growth are pushing world’s total energy consumption to double by 2050. This represents grand challenges and opportunities for power electronics and electric power systems engineers to modernize the power grid. Power electronics & systems (PEAS) technology is increasingly important for smarter distributed systems, particularly for power grid modernization. This paper discussed smart technology solutions, such as PEAS, for the changing nature of the electric power system. Specific technical challenges that are facing the power electronics and electric power systems communities are then elaborated. It is shown that we can meet the grand energy challenge by lever-aging the grid modernization efforts. To provide electric power to twice as many people does not have to increase the required environment footprint.

scholarly journals Developing a New Software Tool for Research of Interstate Power Grids Expansion

2020 ◽  
Vol 209 ◽  
pp. 04004
Author(s):  
Ivan L. Trofimov ◽  
Leonid N. Trofimov
Keyword(s):  
Information System ◽  
Power Systems ◽  
Visual Analysis ◽  
Software Tool ◽  
Power Grids ◽  
Operating Modes ◽  
Technical Description ◽  
Software Modules ◽  
Graphic Module

The aim of our research is to develop a new software tool – the Computing and Geo-information System for study of prospective interstate power grids expansion. The new software tool developed by the authors consists of several functional parts (software modules): graphic module for visual analysis of processed data, geo-information and cartographic module, module for working with the integrated ORIRES model (model for optimization of power systems expansion and their operating modes). In this paper, we consider features and technical description of the new software tool. The obtained results of the integrated ORIRES model in tabular, graphic and cartographic forms are presented.

Mathematical models for determining limit operating modes in electrical networks with distributed generation plants

2020 ◽  
pp. 17-36
Author(s):  
Yuri Bulatov ◽  
◽  
Andrey Kryukov ◽  
Aleksandr Cherepanov ◽  
◽  
...  
Keyword(s):  
Power Systems ◽  
Low Power ◽  
Electric Power ◽  
Distributed Generation ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Electric Power System ◽  
Electrical Networks ◽  
Operating Modes ◽  
Positive Effects

Decentralization of electricity generation based on distributed generation plants is an important segment of the new technology platform for the power industry. On the basis of this approach, significant positive effects can be obtained, which consist in reducing financial costs of energy supply, increasing the uninterrupted power supply, improving the quality of electricity and stimulating the use of renewable energy sources. Effective use of distributed generation in electric power systems requires the development of methods and tools that provide coordinated management of normal, emergency and post-emergency modes. Of particular relevance is the problem of determining the limit operating modes of networks, at the nodal points of which relatively low power generators are connected. In some situations, for example, when using small hydraulic stations, groups of such generators can be located at significant distances for 6-10-20 kV distribution networks from consumption centers. In this case there will be a noticeable limitation of the regions of static aperiodic stability. The article presents the results of developments aimed at implementing methods for determining the limit operating modes by static aperiodic stability in networks with distributed generation plants. The proposed approach is based on the limit modes equations which provide the formation of effective algorithms for the operational finding of points belonging to the boundaries of stability regions. The results of the construction of the indicated areas for a 6 kV electric network with distributed generation plants based on low-power hydraulic stations are presented. Additionally, the transient processes in the studied electric power system were simulated in the Matlab system for various space points of the controlled mode parameters.

scholarly journals A Swarm Intelligence Approach to the Power Dispatch Problem

2010 ◽  
Vol 5 (3) ◽  
pp. 375 ◽  
Author(s):  
Dinu Călin Secui ◽  
Ioan Felea ◽  
Simona Dzitac ◽  
Laurențiu Popper
Keyword(s):  
Power Systems ◽  
Optimization Problems ◽  
Optimization Method ◽  
Economic Power ◽  
Swarm Optimization ◽  
Power Dispatch ◽  
Complex Optimization ◽  
Economic Power Dispatch ◽  
The Mathematical Model ◽  
Intelligence Approach

This paper examines how two techniques of the Particle Swarm Optimization method (PSO) can be used to solve the Economic Power Dispatch (EPD) problem. The mathematical model of the EPD is a nonlinear one, PSO algorithms being considered efficient in solving this kind of models. Also, PSO has been successfully applied in many complex optimization problems in power systems. The PSO techniques presented here are applied to three case studies, which analyze power systems having four, six, respectively twenty generating units.

scholarly journals Optimization of Capacities of Wind and Solar Power Plants in the Interstate Power Grid in North-East Asia Taking Into Account the Intermittence of Their Power Output

2020 ◽  
Vol 209 ◽  
pp. 04005
Author(s):  
Leonid N. Trofimov ◽  
Ivan L. Trofimov
Keyword(s):  
Power Output ◽  
Power Plants ◽  
Solar Power ◽  
Power Grid ◽  
Northeast Asia ◽  
Operating Modes ◽  
North East ◽  
Solar Power Plants ◽  
Series Of Experiments ◽  
Fossil Fuel Power Plants

The paper considers the problems of optimization of wind and solar power plants (WPP and SPP) expansion and it operating modes in the prospective interstate power grid (ISPG) in Northeast Asia, taking into account the intermittence of their power output. A series of experiments with variations in the profiles of WPP and SPP in the model nodes were carried out. Also authors carried out some additional experiments with the increase in fuel costs for fossil fuel power plants due to environmental restrictions. As a result, an assessment of the character of the changes in the solution of the model for new installed capacities and their costs, depending on the variations for the profiles of the contributions generation of WPP and SPP to cover daily electrical load graphs, is obtained.

CHAOTIC OPERATING MODES OF POWER SYSTEMS WITH DISTRIBUTED GENERATION

2020 ◽  
Vol 2 (1) ◽  
pp. 027-031
Author(s):  
B. A. Kosarev ◽  
◽  
O. A. Lysenko ◽  
V. K. Fedorov ◽  
R. N. Khamitov ◽  
...  
Keyword(s):  
Power Systems ◽  
Distributed Generation ◽  
Operating Modes

scholarly journals Voltage Stability of Power Systems with Renewable-Energy Inverter-Based Generators: A Review

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 115
Author(s):  
Nasser Hosseinzadeh ◽  
Asma Aziz ◽  
Apel Mahmud ◽  
Ameen Gargoom ◽  
Mahbub Rabbani
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Voltage Stability ◽  
Reactive Power ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
System Stability ◽  
Special Issue ◽  
Synchronous Generators

The main purpose of developing microgrids (MGs) is to facilitate the integration of renewable energy sources (RESs) into the power grid. RESs are normally connected to the grid via power electronic inverters. As various types of RESs are increasingly being connected to the electrical power grid, power systems of the near future will have more inverter-based generators (IBGs) instead of synchronous machines. Since IBGs have significant differences in their characteristics compared to synchronous generators (SGs), particularly concerning their inertia and capability to provide reactive power, their impacts on the system dynamics are different compared to SGs. In particular, system stability analysis will require new approaches. As such, research is currently being conducted on the stability of power systems with the inclusion of IBGs. This review article is intended to be a preface to the Special Issue on Voltage Stability of Microgrids in Power Systems. It presents a comprehensive review of the literature on voltage stability of power systems with a relatively high percentage of IBGs in the generation mix of the system. As the research is developing rapidly in this field, it is understood that by the time that this article is published, and further in the future, there will be many more new developments in this area. Certainly, other articles in this special issue will highlight some other important aspects of the voltage stability of microgrids.

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