scholarly journals The possibility of occurrence of chaotic modes of operation of electrical system with distributed generation

2019 ◽  
pp. 58-62
Author(s):  
G. A. Koshuk ◽  
◽  
B. A. Kosarev ◽  
V. K. Fedorov ◽  
A. A. Okhotnikov ◽  
...  
2021 ◽  
Vol 288 ◽  
pp. 01108
Author(s):  
Alexander V. Vinogradov ◽  
Anatoly Y. Seyfullin ◽  
Alina V. Vinogradova ◽  
Vadim E. Bolshev ◽  
Alexey V. Bukreev ◽  
...  

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.


Author(s):  
Muhardika Muhardika ◽  
Syahroni Syahroni

Power flow analysis aims to determine the capacity of a generator to serve loads, to know the value of power losses in the electrical system, and to carry out a planning and development of the electric power system. Power flow analysis is carried out in order to find out the characteristics of the electric power system to be built or to be developed as desired. In this study, power flow analysis and short circuit analysis were carried out in the electrical system of Andalas University with 2 conditions, namely, when the conditions were normal or when the Distributed Generation was not added and when the conditions were added, the Distributed Generation (DG) Photovoltaic 300 kW. The results of this study indicate the largest system losses when normal conditions are on bus 1 to bus 2 amounting to 20.21 kW and 6.13 kVar, and when conditions add DG on bus 17 to bus 18 are 230.8 kW and 142.7 kVar. The results of the short circuit analysis of the two conditions are on bus 1 when the condition is experiencing the addition of DG with an increase in average current, namely 1 soil phase of 0.86 kA, 2 phases of 0.175 kA, 2 soil phases of 0.09609 kA, and 3 phases of 0.085273 kA from when the conditions were normal. Keywords : Power Flow Analysis, Short Circuit Analysis, Photovoltaic, Wind Turbine


Author(s):  
V. Lavanya ◽  
N. Senthil Kumar

Design of control strategies for Distributed generation systems is very important to achieve smoother transition between the grid connected and islanding modes of operation. The transition between these two modes of operation should be seamless, without any severe transients during the changeover. In this paper, two different control strategies namely inverter output current control and indirect grid current control for the seamless transfer between the modes of operation has been explored for the suitability. The design and analysis of the cascaded control loops based on Proportional Integral (PI) controller has been dealt in detail for both inverter output current control and indirect grid current control strategy. Control parameters are designed using the control system toolbox in MATLAB. A 10kW grid connected microgrid system has been designed and simulated in MATLAB/Simulink and the results are presented under grid connected operation, islanding operation and the transition between the modes considering fault condition in the grid side. The simulation studies are carried out using both the control strategies and the results are presented to validate the design methodology.


Sign in / Sign up

Export Citation Format

Share Document