Microgrids Operation in Islanded Mode

Author(s):  
A. C. Zambroni de Souza ◽  
B. De Nadai N. ◽  
F. M. Portelinha ◽  
Diogo Marujo ◽  
D. Q. Oliveira
Keyword(s):  
Author(s):  
Mir Nahidul Ambia ◽  
Ke Meng ◽  
Weidong Xiao ◽  
Zhao Yang Dong
Keyword(s):  

Author(s):  
V. Vedic Sriram ◽  
V. Kamesh Bharadwaj ◽  
V. Dileep Kumar ◽  
S. Syama

2021 ◽  
Author(s):  
Chinmay Shah ◽  
Richard Wies

The conventional power distribution network is being transformed drastically due to high penetration of renewable energy sources (RES) and energy storage. The optimal scheduling and dispatch is important to better harness the energy from intermittent RES. Traditional centralized optimization techniques limit the size of the problem and hence distributed techniques are adopted. The distributed optimization technique partitions the power distribution network into sub-networks which solves the local sub problem and exchanges information with the neighboring sub-networks for the global update. This paper presents an adaptive spectral graph partitioning algorithm based on vertex migration while maintaining computational load balanced for synchronization, active power balance and sub-network resiliency. The parameters that define the resiliency metrics of power distribution networks are discussed and leveraged for better operation of sub-networks in grid connected mode as well as islanded mode. The adaptive partition of the IEEE 123-bus network into resilient sub-networks is demonstrated in this paper.


2013 ◽  
Vol 05 (07) ◽  
pp. 437-445 ◽  
Author(s):  
Dorel Soares Ramos ◽  
Tesoro Elena Del Carpio-Huayllas ◽  
Ricardo Leon Vasquez-Arnez

Author(s):  
Ibrahim Alhamrouni ◽  
Wira Wahab ◽  
M. Salem ◽  
Nadia H. A. Rahman ◽  
Lili Awalin

<p>With the rapid expansion of electricity grid, there yet still places to be covered considering their remote location. Micro-grid (MG) is a solution in this scenario, in fact, there is actually many cases where MG is used in case of emergency and act as a backup to the main electrical grid. By disconnecting itself from the larger grid, a grid that can have many problems, the micro-grid becomes much more flexible in its operations and by continuing to power households and communities alike. Besides grid-connected mode, it is necessary for the MG to operate in autonomous mode. By operating in islanded mode, micro-grids must be able to supply critical load without interruption, run at specific values for voltage and power and extract the maximum power from the distributed generations (DG). Therefore, the modeling of microgrid network considering solar photovoltaic(PV) and wind turbine generation (WTG) system as the distributed generation have been modeled using Matlab/Simulink in this research. Apart from that, the observation of total harmonic distortion(THD) between two operation modes of grid-connected and the islanded-mode is presented in order to analyze the power quality stability towards two operations MG network with same loads size and network parameters.</p>


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