Recently, there has been great interest in the integration of large numbers of small generation and storage resources at the distribution level. This will require new control strategies for efficient system performance. One issue that has not been addressed sufficiently is the coordinated dispatch of large numbers of these units. In this paper, an optimal distribution power flow strategy is pro...

For an existing IEEE 13-node feeder, Genetic Algorithm (GA) based method is applied to determine the optimal solution to the DOPF problem. An approach to solve optimality problem was proposed, in which a compromise is made on optimality in order to reduce the computational burden. In this paper a 9-bus feeder circuit is developed and performed power flow studies by using MATPOWER 4.1 software. ...

Bubbling fluidized beds are granular systems, in which a deep layer of particles is set in motion by a vertical gas stream, with the excess gas rising as bubbles through the bed. We show that pressure fluctuations in such a system have non-Gaussian statistics. The probability density function has a power-law drop-off and is very well represented by a Tsallis distribution. Its shape is explained...

The utilization of power systems in Germany has changed considerably due to a fundamental shift in the variety of power generation during the last years. Since most of the renewable power plants are connected on distribution level, these grids are affected fundamentally. Smart distribution systems are one important element to handle the new challenges. Therefore the authors of the present paper...

in this paper, a non-isothermal two-phase flow in the cathode gas diffusion layer (gdl) of pem fuel cell is modeled. the governing equations including energy, mass and momentum conservation equations are solved by numerical methods. also, the optimal values of the effective parameters such as the electrodes porosity, gas diffusion layer (gdl) thickness and inlet relative humidity are calculated...

A distribution system is an interface between the bulk power system and the consumers. The radial distribution system is popular among these because of its low cost and simple design. The voltage instability in the power system is characterized by a monotonic voltage drop, which is slow at first and becomes abrupt after some time when the system is unable to meet the increasing power demand. Th...

The studies of the behavior of fluid on the nano-level has shown to be an important means of influencing the characteristic of fluid must especially in the area of thermal conductivity. Giving relevance in numerous fields such as biomedicine, manufacturing, fuel cells and soon on. This article considers flow and heat transfer of viscous fluid conveying Gold nanoparticles through expanding or co...

The capability of routing power from one phase to another, interphase flow (IPPF) control, has the potential improve systems efficiency, stability, and operation. To date, existing works on IPPF control focus unbalanced compensation using three-phase devices. An model is proposed for capturing general caused by single-phase elements. reveals that presence a quantity in line-to-line elements cau...