A multi-objective strategy for optimal DG and capacitors placement to improve technical, economic, and environmental benefits
K. R. K. V. Prasad, K. Ravindra, A. Ramkumar, Ramesh Adireddy
Abstract
Combination of distributed generation units (DGs) and capacitors (CBs) are incorporated in distribution system to enhance its performance by improving technical, economic and environmental benefits. Optimal allocation and sizing of DGs and CBs is an essential yet a challenging task as complication may arise due to improper siting and sizing. This paper intends to propose a method which employs non-dominated sorting genetic algorithm-II (NSGA-II) for optimal placement and sizing of DGs and CBs. The main objective of the proposed method is to improve technical performance by reducing power losses, voltage deviation and line loading along with maximization of economic and environmental benefits. Both DG placement and DG with Capacitor placement are considered to evaluate the efficacy of the proposed method. Simulations are done on IEEE 33-bus and 69-bus test systems to verify the usefulness of the proposed method. Proposed method gave enhanced results in technical, economic and emission objectives than weighted sum approach and other optimization algorithms.