The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper analyses the key benefits of a multiple paralleled diesel generator system over a “Single” diesel generator system for supplying small remote and isolated loads. Even though having several small diesel generators in parallel instead of one larger one will certainly induce higher capital cost of the generating unit, the resulting cost of kWh generated as well as the system is life cycle...
In the present study, a novel enhanced real-coded approach is proposed for the simultaneous optimization of Unit Commitment and Economic Dispatch. In the proposed method, the objective variables represent the power generated by each unit at each hour. By utilizing the operational characteristics of each unit, its states and generation levels during the scheduling period are optimized concurrently...
For micro-grid system under isolated and parallel operation mode, two kinds of economic dispatch operation model are established. The objective function of the model is formulated considering time-of-use (TOU) price and the electric energy transaction. The theory of particle swarm optimization (PSO) is proposed, and the key parameters are improved to enhance the performance of the algorithm. An actual...
In this paper a comprehensive method to optimize the operation of a microgrid is presented. Various factors such as fuel cost, environmental cost, maintenance cost, start-up and shut-down costs and spot price of electricity as well as effect of congestion are considered. To demonstrate the performance of the presented method, a test system consisting of micro turbine, fuel cell and wind unit is considered...
This paper proposes a methodology for configuring hybrid solar-wind-diesel-energy systems at minimum cost and minimum dumped load. An iterative optimisation technique has been developed to calculate, the optimum system configuration to achieve minimum hours of loss of power supply and minimum annualized cost of system (ACS). The decision variables included in the optimization process are the number...
The completely Electric Power System encompass three parts: Generation, Transmission, and Distribution that all require maintenance to better system reliability and energy efficiency. Most generation maintenance scheduling (GMS) packages consider preventive maintenance scheduling for generating units over one or two year's time horizon to lessen the total operation costs while fulfilling system energy...
Operators of aging offshore platforms that require lifespan extension often undertake revamp and rejuvenation projects to replace or repair existing aged or obsolete platform equipment with newer ones that may also utilise newer technology. Although power generation technologies such as unmanned thermoelectric generation (TEG), photovoltaics, microturbines, gas generators and low energy lighting such...
Carbon dioxide (CO2) emission reduction targeting is an important move in atmospheric CO2 concentration control. Idea of applying HEN retrofit and fuel switching in existing plant has been proposed to be applied simultaneously in achieving CO2 emissions reduction. Graphical approach combining the mentioned idea has been proposed, but involves potentially time consuming manual procedures. Besides,...
This paper proposes a new objective function for solving the optimal management of MicroGrid (MG) problem. This objective function aims to minimize MicroGrid's operating cost as well as the emissions of atmospheric pollutants while constraining it to meet the load demands. Some Objective constraints are presented in this paper for the safety of MG system. Moreover, the particle swarm-based-simulated...
Many industrialized as well as developing nations are moving towards the use of efficient renewable energy, a trend that will benefit the consumers, the energy producers and, consequently, the environment. As governments, energy companies and consumers debate the environmental impact of using renewable energy, they also study the economic impact and Return On Investment (ROI) of switching from the...
This paper proposes a new method to manage the daily operation of MicroGrid (MG) for residential applications. Thorough discussion and simulations are conducted to clarify and highlight the principle of the method. Nonlinear optimization problem formulation is also performed. The proposed cost function takes into consideration the costs of the emissions NOx, SO2, and CO2 as well as the operation and...
Although Nova Scotia produces only 2.8% of Canada's total greenhouse gases (GHG), it has the fourth highest per capita emissions. These emissions come largely from electricity generation and transportation sectors. This is because fossil fuels are the main sources of electricity generation and even in the cleanest GHG reduction scenario fossil fuels will still contribute 60% of the electricity generation...
With increase in the demand for electrical energy, the demand for constructing gas fuel based power plants has increased. As a consequence, the dependence of electrical industry to gas infrastructure is more pronounced. In a midterm scale, the generation units maintenance may be so planned that the gas network constraints can be properly observed to make the most benefit from available resources....
This paper presents a parallel-refined simulated annealing (PRSA) approach for the generator maintenance scheduling (GMS) problem to maximize profit objective function. The merit of simulated annealing (SA) is preserved and the deficiency is pruned away in the proposed PRSA. The proposed PRSA is an effective method because the multiple search trajectories parallel and refined in each stage. The near...
This paper presents a parallel-refined simulated annealing (PRSA) approach for the generator maintenance scheduling (GMS) problem to maximize profit objective function. The merit of simulated annealing (SA) is preserved and the deficiency is pruned away in the proposed PRSA. The proposed PRSA is an effective method because the multiple search trajectories parallel and refined in each stage. The near...
In this paper, a novel multiobjective genetic algorithm approach for economic emission load dispatch (EELD) optimization problem is presented. TheEELD problem is formulated as a nonlinear constrained multiobjective optimization problem with both equality and inequality constraints. A new optimization algorithm which is based on concept of co-evolution and repair algorithm for handling nonlinear constraints...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.