Multi-Objective Optimal Allocation of Electric Vehicle Charging Stations and Distributed Generators in Radial Distribution Systems using Metaheuristic Optimization Algorithms

  • V. K. B. Ponnam Department of Electrical and Electronic Engineering, Acharya Nagarjuna University, India
  • K. Swarnasri Department of Electrical and Electronics Engineering, RVR & JC College of Engineering, India
Keywords: Electrical Vehicles (EVs), Electric Vehicle Charging Stations (EVCSs), renewable energy sources, Distributed Generators (DGs), Average Voltage Deviation Index (AVDI), Voltage Stability Index (VSI), Harris Hawks Optimization (HHO), Teaching-Learning Based Optimization (TLBO)

Abstract

The acceptance rate of Electric Vehicles (EVs) in the transport industry has increased substantially due to the augmented interest towards sustainable transportation initiatives. However, their impact in terms of increased power demand on the electric power market can increase real power losses, decrease voltage profile, and consequently decrease voltage stability margins. It is necessary to install Electric Vehicle Charging Stations (EVCSs) and Distributed Generators (DGs) at optimal locations to decrease the EV load effect in the Radial Distribution System (RDS). This paper addresses a multi-objective optimization technique to obtain simultaneous EVCS & DG placement and sizing. The problem is formulated to optimize real power losses, Average Voltage Deviation Index (AVDI), and Voltage Stability Index (VSI) of the electrical distribution system. Simulation studies were performed on the standard IEEE 33-bus and 69-bus test systems. Harries Hawk Optimization (HHO) and Teaching-Learning Based Optimization (TLBO) algorithms were selected to minimize the system objectives. The simulation outcomes reveal that the proposed approach improved system performance in all aspects. Among HHO and TLBO, HHO is reasonably successful in accomplishing the desired goals.

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