Determination of Optimal Connections to an External Source in Power Supply Systems with Sources of Distributed Generation

2021 ◽  
Author(s):  
A.V. Varganova ◽  
A.S. Irikhov ◽  
D.S. Zarubin
Keyword(s):  
Distributed Generation ◽  
Power Supply ◽  
External Source ◽  
Supply Systems

scholarly journals Timely determination of static stability margins in power supply systems equipped with distributed generation installations

2021 ◽  
Vol 25 (1) ◽  
pp. 31-43
Author(s):  
Yu. N. Bulatov ◽  
A. V. Kryukov ◽  
К. V. Suslov ◽  
A. V. Cherepanov
Keyword(s):  
Distributed Generation ◽  
Power Supply ◽  
Computer Modelling ◽  
Dynamic Modelling ◽  
Electrical Network ◽  
Electrical Networks ◽  
Stability Margins ◽  
Emergency Control ◽  
Supply Systems

The article aims to develop a methodology to ensure timely determination of the margins of static aperiodic stability in power supply systems, at the nodal points of which distributed generation units are installed. The authors used mathematical methods and algorithms based on the application of limiting regime equations. Transitional processes were analysed for various points in the space of controlled mode parameters according to the simulation modelling in Matlab using the Simulink and SimPowerSystems packages. On the basis of the obtained results, an effective technique for analysing stability margins in electrical networks with distributed generation units was implemented. This method is applicable in design problems, as well as in operational and emergency control. The conducted theoretical analysis and computer modelling showed the effectiveness of the proposed methodology for calculating stability margins; the nondegeneracy of the Jacobi matrix of limiting regime equations at the solution point ensures the guaranteed reliability of the results. It was shown that an alternative approach to solving the problem of timely determination of aperiodic stability margins can be implemented on the basis of limiting regime equation with increased nonlinearity. Dynamic modelling of an electrical network with distributed generation units confirmed the correctness of determining the stability margins calculated using limiting regime equations. The developed technique can be recommended for practical use in the design of power supply systems or in operational control of synchronous generators. In particular, the presented methodology can be used to implement a multi-agent emergency control system for distributed generation installations located in generalpurpose distribution electrical networks. 

scholarly journals Method for determining the maximum load of consumers in city power supply systems

2019 ◽  
Vol 139 ◽  
pp. 01078 ◽  
Author(s):  
A.G. Saidkhodjaev ◽  
A.M. Najimova ◽  
A.K. Bijanov
Keyword(s):  
Power Supply ◽  
Maximum Load ◽  
High Accuracy ◽  
New Method ◽  
Electrical Networks ◽  
Electric Networks ◽  
Reliable Determination ◽  
Supply Systems

In this article, we propose a new method for determining the maximum load of electric consumers in urban electric networks, which differs from existing methods in more accurate and reliable determination of the maximum loads. Based on the determination of the maximum loads of the objects of urban electrical networks, it is concluded that the proposed methods are determined by high accuracy and minor errors.

scholarly journals Features of Estimation of Structural Reliability of Power Supply Systems

2019 ◽  
Vol 139 ◽  
pp. 01032
Author(s):  
Boris Papkov ◽  
Vladimir Osokin
Keyword(s):  
Distributed Generation ◽  
Power Supply ◽  
Structural Reliability ◽  
Renewable Energy Sources ◽  
Integral Characteristic ◽  
Electric Power System ◽  
Mathematical Apparatus ◽  
Reliability Indicators ◽  
Demand Changes ◽  
Supply Systems

Development and operation of modern power supply systems of consumers which are the part of distributed generation (DG) systems with their communication with electric power system (EPS) and renewable energy sources (RES) demand changes in estimation of their reliability indicators on the basis of corresponding mathematical apparatus. It is shown that DG systems refer to structures with several overlapping zones of action, which determines their peculiarities, which are represented by some integral characteristic - efficiency of operation, which characterizes the degree of expediency of use of the DG system in different modes. The approach based on evaluation of effectiveness of such systems is offered. Examples of calculation of relatively simple structures of DG systems performing several tasks simultaneously are given.

scholarly journals To the issue of assessing the efficiency of distributed generation in low-voltage electric networks

2020 ◽  
Vol 178 ◽  
pp. 01077
Author(s):  
A.N. Alyunov ◽  
A.Yu Belyanin ◽  
A.E. Nemirovsky ◽  
D.A. Zaripova
Keyword(s):  
Power System ◽  
Distributed Generation ◽  
Power Supply ◽  
Low Voltage ◽  
Electric Networks ◽  
Cost Of Electricity ◽  
Industrial Enterprises ◽  
Urgent Task ◽  
The Cost ◽  
Supply Systems

This article considers an urgent task of using autonomous sources for power supply systems of industrial enterprises of small and medium-sized production. The efficiency of choosing the time of their switching-on in peak hours of power system in order to reduce the cost of electricity is shown on the example of diesel generators.

scholarly journals Analysis of the concepts of building microgrids containing distributed generation objects

2021 ◽  
Vol 288 ◽  
pp. 01108
Author(s):  
Alexander V. Vinogradov ◽  
Anatoly Y. Seyfullin ◽  
Alina V. Vinogradova ◽  
Vadim E. Bolshev ◽  
Alexey V. Bukreev ◽  
...  
Keyword(s):  
Electric Power ◽  
Distributed Generation ◽  
Power Supply ◽  
Switching Systems ◽  
Modes Of Operation ◽  
Nominal Voltage ◽  
Similarities And Differences ◽  
Supply Systems

In this article, the authors consider the materials of research on the construction and operation of intelligent power supply systems with a nominal voltage of up to 1000 V, containing distributed generation facilities. The author’s approach to the construction of microgrids based on multi-contact switching systems is proposed. The similarities and differences of the presented concepts are determined. The main problematic issues that arise in the process of implementing projects for the construction of microgrids and the management of electric power modes of operation are formulated. The ways of solving the problems related to the management of the modes of operation of microgrids are proposed.

scholarly journals Determination of optimal location for installation of symmetry facilities in 0.4 kV power supply systems with motor-drive load

2018 ◽  
Vol 58 ◽  
pp. 03014
Author(s):  
Victoria Romanova
Keyword(s):  
Power Supply ◽  
Asynchronous Motor ◽  
Optimal Location ◽  
Economic Feasibility ◽  
Motor Drive ◽  
Capacity Loss ◽  
Electrical Grids ◽  
Cross Platform ◽  
Supply Systems

This article considers the issue for creation of computer-aided program designed for determination of optimal location for installation of symmetry facilities in 0.4 kV power supply systems with motor-drive load in conditions of asymmetry of voltages. The developed program is implemented by means of C# programing language in Microsoft Visual Studio 2012 programming environment using the embedded cross-platform data base SQLite. The program is designed for making electrotechnical calculations during designing, modernization and operation of electrical grids with available motor drive load. It ensures plotting of schematic circuits for 0.4 kV power supply system sections with installed symmetry facilities. The program will enable quick and exact calculation of power capacity loss, determination of economic feasibility for taking special measures to eliminate the asymmetry of voltages, and to determine optimal application and location of symmetry facilities. Using the program in motor-drive load power supply systems will enhance the asynchronous motor reliability and efficiency.

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