Optimal allocation of distributed generation for planning master–slave controlled microgrids

This study proposes a novel problem formulation for a planning distributed generation (DG) allocation for microgrids, using the master–slave approach. In the previous planning studies, all DGs have the same operating mode (e.g. operate at unity power factor). For master–slave controlled microgrid, D...

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Bibliographic Details
Published in:IET generation, transmission & distribution Vol. 13; no. 16; pp. 3704 - 3712
Main Authors: Pasha, Aisha M, Zeineldin, Hatem H, El-Saadany, Ehab F, Alkaabi, Sultan S
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 20.08.2019
Subjects:
distributed power generation
fixed nonunity power factor
integer programming
linear programming
load flow
master–slave approach
master–slave controlled microgrid
mixed‐integer nonlinear programming problem
nonlinear programming
nonunity power factor operation
novel problem formulation
optimal allocation
optimal DG operating mode
optimal power flow framework
optimisation
optimisation problem
planning distributed generation
planning master–slave controlled microgrids
planning microgrids
planning problem
possible operating modes
power distribution control
power distribution reliability
power factor
power generation control
power generation reliability
previous planning studies
Research Article
sensitivity analysis
slave DGs
unity power factor operation
utility operators
power distribution control
planning distributed generation
nonlinear programming
integer programming
sensitivity analysis
unity power factor operation
optimal DG operating mode
power generation control
previous planning studies
linear programming
distributed power generation
optimisation problem
optimisation
novel problem formulation
mixed-integer nonlinear programming problem
master–slave controlled microgrid
optimal power flow framework
planning master–slave controlled microgrids
fixed nonunity power factor
power generation reliability
possible operating modes
power factor
master–slave approach
power distribution reliability
utility operators
slave DGs
planning microgrids
optimal allocation
planning problem
nonunity power factor operation
load flow
ISSN:1751-8687, 1751-8695
Online Access:Get full text
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Summary:This study proposes a novel problem formulation for a planning distributed generation (DG) allocation for microgrids, using the master–slave approach. In the previous planning studies, all DGs have the same operating mode (e.g. operate at unity power factor). For master–slave controlled microgrid, DGs have two possible operating modes: master (non-unity power factor operation) and slave (unity power factor operation). For planning a master–slave controlled microgrid, in addition to DG siting, the optimal DG operating mode is determined by including a new set of constraints in the planning problem. Thus, the proposed formulation is capable of determining the optimal location of the master and slave DGs with the main objective of minimizing the microgrid's energy losses. The proposed model is formulated as a mixed-integer non-linear programming problem; incorporated into an optimal power flow framework and tested on the IEEE 38-bus systems considering a variable load profile. In addition to this, sensitivity analysis is carried for case studies with different load types and reactive power injection by the slave DGs in the system (e.g. operate at fixed non-unity power factor). The proposed approach can serve as an efficient tool for utility operators for planning microgrids.
ISSN:1751-8687
1751-8695
DOI:10.1049/iet-gtd.2018.5872