This work presents a new algorithm to solve the distribution network reconfiguration problem based on the Tabu Search algorithm. The proposed method provides a way to obtain new solutions and neighbors for the Tabu Search algorithm with controlled randomness, different from what is available in the literature. The proposed method manages to make the algorithm produce good solutions in most iterations, thus performing a smooth and constant descent to obtain the final solution. The algorithm seeks to reduce losses and improve the voltage profile in medium voltage distribution systems. Tests were carried out in two systems used in the literature, the 33-Bus and the 94-Bus systems. The simulation results show that the proposed method has a low computational cost and obtains up to 100% optimal solutions in 100 executions.  

This paper presents a new optimization technique for simultaneous tuning of the parameters into the controllers associated with the control voltage oscillation and damping in synchronous generators. The parameters of the Automatic Voltage Regulator - AVR and the Power System Stabilizer – PSS are optimized thought a modification proposed in the Modified Particle Swarm Optimization technique (called MPSO - Modified Particle Swarm Optimization). To analyze the performance of the controllers, an objective function was used, based on system time response to a variation in the reference voltage of the machine. The parameters obtained for AVR and PSS are compared with the values ​​calculated by the conventional adjustment technique and by the MPSO technique. The results of the simulation show that the technique proposed was efficient in tuning the AVR and PSS parameters, highlighting its ...

This article presents a new algorithm to solve the distribution network reconfiguration problem using Simulated Annealing Optimization. The proposed method provides an improvement relative to the classic approach and the convergence rate between its simulations, using the Open Distribution System Simulator (OpenDSS) software. In addition, using the particular space mesh search concept, which considerably reduces the solution search space. The proposed algorithm aims to reduce energy losses in distribution networks; its operation was applied to the simple 5-bus system. Finally, the proposed algorithm was used for the 33-bus distribution test system, commonly found in the literature. The simulation results show that the proposed method is very efficient and guarantees the achievement of the global optimum.

In industrial plants a large percentage of the controllers is based on the PID Control Algorithm, due to its simplicity and robustness, it is known that the performance of the Plant may be affected in quantity and quality of the product due to inadequate determination of the controller parameters, even harming the actuators themselves. In this work, an alternative to classical methods of tuning of these parameters is shown: the metaheuristic algorithms, which belong to the branch of Informed Search within Artificial Intelligence, whose objective is to optimize a certain cost function avoiding maximums or local minimums. We have considered the linearized model (for practical purposes) of an inverted pendulum system with a sliding carriage for the application of two algorithms: simulated annealing and fireflies; which had as a higher rank the one determined by the Routh-Hurwitz Criterion f...

In industrial plants a large percentage of the controllers is based on the PID Control Algorithm, due to its simplicity and robustness, it is known that the performance of the Plant may be affected in quantity and quality of the product due to inadequate determination of the controller parameters, even harming the actuators themselves. In this work, an alternative to classical methods of tuning of these parameters is shown: the metaheuristic algorithms, which belong to the branch of Informed Search within Artificial Intelligence, whose objective is to optimize a certain cost function avoiding maximums or local minimums. We have considered the linearized model (for practical purposes) of an inverted pendulum system with a sliding carriage for the application of two algorithms: simulated annealing and fireflies; which had as a higher rank the one determined by the Routh-Hurwitz Criterion f...