The Energy Problem

Optimization of an energy based bi-objective multi skilled resource investment project scheduling problem

Growing concern in the management of energy due to the increasing energy costs, has forced managers to optimize the amount of energy required to provide products and services. This research integrates an energy-based resource investment project-scheduling problem (RIP) under a multi-skilled structure of the resources. The proposed energy based multi skilled resource investment problem (EB-MSRIP...

Investigation of the two-machine flow shop scheduling problem to minimize total energy costs with time-dependent energy prices

In this paper, the problem of two-machine flow shop scheduling to minimize total energy costs under time-of-use tariffs is investigated. As the objective function of this study is not a regular measure, allowing intentional idle-time can be advantageous. So this study considers two approaches, one for non-delay version of the problem and the other one for a situation when inserting intentional ...

An Energy-efficient Mathematical Model for the Resource-constrained Project Scheduling Problem: An Evolutionary Algorithm

In this paper, we propose an energy-efficient mathematical model for the resource-constrained project scheduling problem to optimize makespan and consumption of energy, simultaneously. In the proposed model, resources are speed-scaling machines. The problem is NP-hard in the strong sense. Therefore, a multi-objective fruit fly optimization algorithm (MOFOA) is developed. The MOFOA uses the VIKO...

A Novel Technique for Joint Energy and Reserve Dispatch Considering Lost Opportunity Cost

This paper presents a novel solution method for joint energy and Spinning Reserve (SR) dispatch problem. In systems in which the Lost Opportunity Cost (LOC) should be paid to generators, if the LOC is not considered in the dispatch problem, the results may differ from the truly optimum solution. Since the LOC is a non-differentiable function, including it in the formulation makes the problem so...

The effect of magnetic field on 2-D problem of generalized thermoelasticity with energy dissipation

Optimal Strategy of Energy retailer in Integrated Market using smart energy hub framework

In this paper, a bi-level optimization problem is formulated to find the optimal strategy of energy retailer in integrated energy market using smart energy hub concept. In the upper level problem, the energy retailer determines the price of energy carriers and the purchase amount from the wholesale market aiming to maximize his own profit. The consumers decide on their purchase amount of energy...