Coordinate control of distributed generations with power converters in a micro grid

2005 ◽  
Author(s):  
S. Kusagawa ◽  
E. Masada ◽  
J. Baba ◽  
M. Ohshima ◽  
I. Nagy
Keyword(s):  
Power Converters ◽  
Distributed Generations ◽  
Coordinate Control ◽  
Micro Grid

scholarly journals Modeling of micro-grid with the consideration of total harmonic distortion analysis

2019 ◽  
Vol 15 (2) ◽  
pp. 581
Author(s):  
Ibrahim Alhamrouni ◽  
Wira Wahab ◽  
M. Salem ◽  
Nadia H. A. Rahman ◽  
Lili Awalin
Keyword(s):  
Harmonic Distortion ◽  
Rapid Expansion ◽  
Total Harmonic Distortion ◽  
Electricity Grid ◽  
Distributed Generations ◽  
Electrical Grid ◽  
Autonomous Mode ◽  
Quality Stability ◽  
Islanded Mode ◽  
Micro Grid

<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>

scholarly journals A Verification of High-efficiency DC Micro-grid Power Systems with High-performance Power Converters and Energy Management Strategy

2014 ◽  
Vol 18 ◽  
pp. 47-52 ◽  
Author(s):  
Tomokazu Mishima ◽  
Ittetsu Taniguchi ◽  
Hisashi Tamaki ◽  
Youichi Kitagawa ◽  
Kouji Yutani ◽  
...  
Keyword(s):  
Power Systems ◽  
Energy Management ◽  
Management Strategy ◽  
High Performance ◽  
High Efficiency ◽  
Power Converters ◽  
Energy Management Strategy ◽  
Micro Grid

The optimal generator dispatching with uncertain conditions for grid-connected microgrid

2020 ◽  
Vol 3 (1) ◽  
pp. First
Author(s):  
Phan Quoc Dung ◽  
Phan Thi Thanh Binh ◽  
Pham Dinh Minh ◽  
Tran Minh Hung ◽  
Nguyen Duc Hung
Keyword(s):  
Low Voltage ◽  
Circuit Breaker ◽  
Optimal Solution ◽  
Source Power ◽  
Distributed Generations ◽  
Grid Connection ◽  
Distributed Generators ◽  
Optimal Value ◽  
Micro Grid ◽  
The Right

Nowadays, the penetration of wind and solar sources is relatively high in Micro Grid. Wind speed and solar radiation forecasting hardly gives an exact value and leads to the values in intervals. Therefore forecasted output powers of these sources are also in the intervals. The constraint on power balance in Micro Grid has the right-hand-side uncertainty, in the interval. So for Micro-Grid in grid connection mode, the presence of the distributed generations based on wind and solar energy sources makes optimal dispatching problems of distributed generations become an uncertainty problem. The optimal solutions for the lower and upper ends of this interval are the best and the worst optimal solution. This paper proposes to treat the above problem as the optimal problem with two objectives: reach the best and the worst solution. The principle of fuzzy set and the Particle Swarm Optimization algorithm will be applied for solving the multi-objective problem. The final optimal value will belong to an interval. Meanwhile, the output power of the swing generator varies to respond to the uncertainty of wind and solar source power. An example of a low-voltage MG with three distributed generators is considered with two cases: connecting to the utility grid via the circuit breaker and via power controller.

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