Abstract
This article presents a linear model predicting optimal size of Distributed Generation (DG) that addresses the minimum power loss. This method is based fundamentally on strong coupling between active power and voltage angle as well as between reactive power and voltage magnitudes. This paper proposes simplified method to calculate the total power losses in electrical grid for different distributed generation sizes and locations. The method has been implemented and tested on several IEEE bus test systems. The results show that the proposed method is capable of predicting approximate optimal size of DG when compared with precision calculations. The method that linearizes a complex model showed a good result, which can actually reduce processing time required. The acceptable accuracy with less time and memory required can help the grid operator to assess power system integrated within large-scale distribution generation.
Highlights
Recent efforts towards rebuilding the electrical grid pose many challenges
The results show that the proposed method is capable of predicting approximate optimal size of Distributed Generation (DG) when compared with precision calculations
The typical Optimal DG Placement (ODGP) problem deals with the determination of the optimal locations and sizes of multi DGs to be installed into existing distribution networks, subject to electrical network operation constraints and DG, and investment constraints
Summary
Recent efforts towards rebuilding the electrical grid pose many challenges. The installation of renewable distributed generation as energy sources in the distribution system provides numerous benefits. A Column and Constraint Generation (CCG) framework is compared with conventional MG planning approaches to demonstrate the effectiveness of the proposed methodology Another mixed integer nonlinear model was used to find the optimal DG site and size problem [10]. Found considering current Ofgem financial incentives for DNOs. The typical Optimal DG Placement (ODGP) problem deals with the determination of the optimal locations and sizes of multi DGs to be installed into existing distribution networks, subject to electrical network operation constraints and DG, and investment constraints. In this paper, an attempt is made to develop simple, efficient, and flexible linear expression between voltage angles and real power losses By using this expression, a solution of optimal DG sizing can be predicted and calculated quickly and in distribution network. The proposed method can help utility operators to select the optimal size of DGs
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