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In the present work, a new shell-and-tube heat exchanger optimization design approach is developed, wherein the dimensionless entropy generation rate obtained by scaling the entropy generation on the ratio of the heat transfer rate to the inlet temperature of cold fluid is employed as the objective function, some geometrical parameters of the shell-and-tube heat exchanger are taken as the design variables...
This paper presents a new approach via multi-particle swarm optimization (MPSO) to solve the unit commitment (UC) problem. A new strategy which can generate feasible particles and make the search space narrow within the feasible solutions is presented. Some particle swarms are generated by the new strategy, and location optimum solutions are searched in each particle swarm, then a new particle swarm...
The paper presents a new method to design regional coverage satellite constellation, the non-dominated sorting genetic algorithm II (NSGA-II) based on Pareto optimal is improved and applied it to the optimization of regional coverage satellite constellation. The best solution, depending on the importance of different objects, is selected by a kind of multi attributes decision making method. Simulation...
Centralized control using wide-area measurement signals has been suggested to enhance the dynamic performance of large interconnected power systems. However, the impact of time delays introduced by remote signal transmission and processing has to be considered. This paper investigates the wide- area FACTS controller design problem in the presence of delayed input signals in wide-area measurement system...
Calculation of the maximum injection power is an urgent issue in the planning and operating of wind farms. This paper presents a method based on the stochastic programming theory in calculation of the maximum injection power of large- scale wind farms connected to power systems. It introduces random variables to describe active powers of wind farms because of their stochastic characteristics and pays...
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