Abstract

Energy is one of the valuable resources in this biosphere. However, with the rapid increase of the population and increasing dependency on the daily use of energy due to smart technologies and the Internet of Things (IoT), the existing resources are becoming scarce. Therefore, to have an optimum usage of the existing energy resources on the consumer side, new techniques and algorithms are being discovered and used in the energy optimization process in the smart grid (SG). In SG, because of the possibility of bi-directional power flow and communication between the utility and consumers, an active and optimized energy scheduling technique is essential, which minimizes the end-user electricity bill, reduces the peak-to-average power ratio (PAR) and reduces the frequency of interruptions. Because of the varying nature of the power consumption patterns of consumers, optimized scheduling of energy consumption is a challenging task. For the maximum benefit of both the utility and consumers, to decide whether to store, buy or sale extra energy, such active environmental features must also be taken into consideration. This paper presents two bio-inspired energy optimization techniques; the grasshopper optimization algorithm (GOA) and bacterial foraging algorithm (BFA), for power scheduling in a single office. It is clear from the simulation results that the consumer electricity bill can be reduced by more than 34.69% and 37.47%, while PAR has a reduction of 56.20% and 20.87% with GOA and BFA scheduling, respectively, as compared to unscheduled energy consumption with the day-ahead pricing (DAP) scheme.

Highlights

  • With the increased use of modern technologies and smart appliances in every field of life, energy consumption is rapidly increasing

  • We had a maximum cost of 267.45 $; when scheduled by grasshopper optimization algorithm (GOA), it became 174.67 $ (34.69% reduction); and in the case of bacterial foraging algorithm (BFA), it became 161.23 $ (37.47% reduction)

  • We compared our results with a few state-of-the-art nature-inspired algorithms in the literature like genetic algorithm (GA), firefly algorithm (FA), cuckoo search algorithm (CSA) and ant colony optimization (ACO) for the three mentioned fitness functions, i.e., minimization of the electricity bill, PAR and waiting time

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Summary

Introduction

With the increased use of modern technologies and smart appliances in every field of life, energy consumption is rapidly increasing. Demand side management (DSM) has many strategies that help to solve the energy optimization problem by peak clipping, load shifting, strategic conservation, flexible load shifting, strategic load growth and valley filling. Consumer load management is known as DSM It is the process of shifting electricity demand from high-demand (on-peak) hours to low-demand(off-peak) hours to decrease the energy cost. For cost and energy consumption minimization, mixed integer linear programming (MILP), mixed integer nonlinear programming (MINLP), non-integer linear programming (NILP) and convex programming were used in [5,6,7,8] These techniques are used for fewer appliances and have a large convergence time.

Related Work
Problem Statement and Approach
Model Architecture
Problem Formulation
Waiting Time
Objective Function
Scheduling Algorithms
Grasshopper Optimization Algorithm
Bacterial Foraging Algorithm
Chemotaxis
Swarming
Elimination and Dispersal
Simulation Results
Conclusions
Full Text
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