scholarly journals Power Loss Minimization in Islanded Microgrids: A Communication-Free Decentralized Power Control Approach Using Extremum Seeking

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 20879-20893 ◽  
Author(s):  
Su-Yang Shieh ◽  
Tulga Ersal ◽  
Huei Peng
Keyword(s):  
Power Control ◽  
Power Loss ◽  
Extremum Seeking ◽  
Loss Minimization ◽  
Control Approach ◽  
Power Loss Minimization

A Communication-Free Decentralized Power Control Approach for Power Loss Minimization in Islanded Microgrids Using Extremum Seeking

2017 ◽  
Author(s):  
Su-Yang Shieh ◽  
Tulga Ersal ◽  
Huei Peng
Keyword(s):  
Power Control ◽  
Power Loss ◽  
Operating Conditions ◽  
Extremum Seeking ◽  
Total Power ◽  
Loss Minimization ◽  
Plug And Play ◽  
Control Approach ◽  
Structure Information ◽  
Power Loss Minimization

This paper considers islanded microgrids and is motivated by the need for decentralized control strategies with minimal communication among grid components to support a robust and plug-and-play operation. We focus on the problem of power allocation among the distributed generation units (DGs) to maintain low distribution power loss in the grid and develop a communication-free distributed power control approach for power loss minimization based on the extremum-seeking (ES) method. In this approach, the DGs implement ES simultaneously and separately to minimize their current outputs by controlling the active power. The total power loss is thus reduced and no grid structure information or communication is needed in the optimization process. The existence of a Nash equilibrium in the resulting non-cooperative game is proved. Numerical simulations are conducted to demonstrate the performance of the proposed communication-free power control approach and show that it is suitable for maintaining low power loss under different operating conditions in a plug-and-play manner.

Reactive power control for real power-loss minimization

1988 ◽  
Vol 1 (3) ◽  
pp. 16-21 ◽  
Author(s):  
M.A.H. El-Sayed ◽  
T.M. Abdel-Rahman ◽  
M.O. Mansour
Keyword(s):  
Power Control ◽  
Power Loss ◽  
Reactive Power ◽  
Loss Minimization ◽  
Reactive Power Control ◽  
Real Power ◽  
Power Loss Minimization

scholarly journals A Hierarchical Control Approach for Power Loss Minimization and Optimal Power Flow within a Meshed DC Microgrid

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4846
Author(s):  
Igyso Zafeiratou ◽  
Ionela Prodan ◽  
Laurent Lefévre
Keyword(s):  
Power Distribution ◽  
Power Loss ◽  
Optimal Power Flow ◽  
Cost Minimization ◽  
Loss Minimization ◽  
Dc Microgrid ◽  
Control Approach ◽  
Power Loss Minimization ◽  
Optimal Power ◽  
The Cost

This work considers the DC part of a hybrid AC/DC microgrid with a meshed topology. We address cost minimization, battery scheduling and the power loss minimization within the power distribution network through constrained optimization. The novelty comes from applying differential flatness properties to the microgrid components and formulating the cost and constraints in terms of the associated B-splines parametrization of the flat outputs (the voltages and currents of the system). This allows us to obtain optimal power profiles to minimize the power dissipation and the cost of the electricity purchase from the external grid. These profiles are tracked by a model predictive controller at the higher level, while at a a lower level a controller deals with the operation of the switches within the DC/DC converters. Extensive simulations under nominal and fault-affected scenarios using realistic data validate the proposed approach.

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