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Nowadays, the integration of uncertain renewable resources has been accelerated, which encounters the operational scheduling of power system with some challenges for achieving optimal operation schedule. Hence, uncertain resources will be penalized if they create an imbalance in power generation. Both of the positive and negative imbalances will lead to a decrease in the uncertain resources' profitability...
Regard to importance of achieving a proper configuration of energy systems in grid-connected microgrids regard to implementation cost, uninterrupted load supplying, the non-linear nature of problem, determination of designing variables and existence of extreme complexities in design of microgrids in comparison with traditional systems, the utilization of a powerful tool such as HOMER software is necessary...
The economic load dispatch (ELD) problem contains many equality and inequality constraints that convert the problem to a non-smooth and non-convex problem, which makes difficulty to find absolute minimum point by using classic mathematic methods. In this paper, the presented ELD problem is a non-smooth and non-convex optimization problem which contains linear and nonlinear constraints such as valve...
Accurate and realistic Economic Load Dispatch (ELD) is one of the most important issues in power systems. In real conditions, ELD is limited to the different non-equal constraints that make ELD a non-convex and non-smooth problem. This makes it difficult to find a global optimized solution, even with the aid of classic mathematical methods. In this paper, a novel procedure is presented for solving...
In recent years, by restructuring the power systems, the power plant companies are going to improve the quality of the power and the reliability of the distribution systems by using the modern instruments. Also, using the distributed generation sources (DGs) and distribution statistic synchronized compensator (D-STATCOM) in distribution systems has been increased. The installation location and the...
Microgrids are defined as power systems, which have small scale and low voltage level. Isolated and remote areas, small loads and places are usually faced with problem of lack of accessibility to main power grid. Microgrids can be an appropriate choice for these areas regarding to environmental and economic aspects. These grids are appropriate to meet various kinds of loads such as domestic, industrial...
In this study, we design optimum compound energy system including wind and solar energy plus fuel cells storage using an evolutionary algorithm based on biological species distribution. This system is used in an outlying area of the Yazd city. To collect meteorology information of the area, solar radiation intensity and wind speed, Yazd meteorological organization accumulated hourly information is...
Renewable energy has recently significant incremental upward trend. In spite of such considerable growth in utilization of these kinds of energies, it has some downsides too. Renewable energies, such as wind and solar energy, have normally uncertainty, which confront operation of power system with some difficulties and complexities. Moreover, power system operation scheduling must be performed more...
Energy is a considerable factor used in most economic activities. The national security of many countries is dependent on the certain access to energy. Thus, the future generation and consumption in various forms of energy and their optimized applications assumed considerable importance. Iran is known as one of the countries possessing significant energy resources in the world. Almost 11% of oil fields...
Nowadays, fluctuations of fuel prices and environmental concerns, have promoted power system planners to use maximum possible renewable energy resources in power system. Currently, among renewable energies, the wind and solar energy have significant penetration in power systems. The most important problem of use of solar and wind energy is the stochastic and intermittent nature of renewable energies...
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