L’objectif de cette étude était d’évaluer les apports nutritionnels et la dépense énergétique des athlètes congolais internés engagés au Semi-Marathon International Brazzaville (SMIB). 40 (femmes hommes) âgés respectivement 22,60 ± 3,45 ans 28,48 8,18 ans, ont participé à exploratoire. La méthode du « semainier trois jours consécutifs » pour collecter données alimentaires formule Harris Benedic...

Power systems are subjected to small–signal oscillations that can be caused by sudden change in the value of large loads. To avoid the dangers of these oscillations, the Power System Stabilizers (PSSs) are used. When the PSSs can not be effective enough, installation of the Thyristor–based compensators to increase the oscillations damping is a suitable method. In this paper, a Static Synchronou...

This paper proposes a method of determining the optimal proportional integral derivative (PID) controller parameters using the particle swarm optimization (PSO) technique. The stability of the power system is an important factor in the operation of any electric system. A PID controller with a power system stabilizer (PSS) has been developed to maintain the stability and enhance the performance ...

The flexible excitation system (FES) is a kind of novel with two channels for damping control. Besides the basic functions traditional systems, systems can provide reactive power support terminal voltage, and large-capacity FES improve voltage stability power-angle synchronous generator units. However, increase in capacity complication control objectives, difficulty controller design will be in...

The existence of low-frequency oscillations in power systems is the cause angle instability, limiting transmission maximum tie-line power. One effective ways to improve stability limits by installing a system stabilizer and supplementary excitation control augment with an automatic voltage regulator (AVR) supplemental feedback stabilizing signal. This paper proposes new strategy for simultaneou...

Poor control of the power grid can lead to a total system collapse, causing significant economic losses and possible damage security social peace. Therefore, improving stability, particularly transient has become one major research topics. This paper proposes developed modeling approach that provides optimal stabilizer parameters devices, aiming at electrical network stability by minimizing ang...

This paper presents an Improved Artificial Bee Colony (IABC) algorithm to optimal tune of the Power System Stabilizer (PSS). In the IABC algorithm an interactive strategy is introduced by considering the universal gravitation to the movement of onlooker bees in the original Artificial Bee Colony (ABC) to enhance exploration ability of the ABC algorithm. The robustly PSS tuning problem is formul...

SVC is one of the most significant devices in FACTS technology, which is used in parallel compensation, enhancing the transient stability, limiting the low frequency oscillations and, etc. designing a proper controller is effective in operation of SVC. In this paper, a simplified analysis of the effect of a SVC on the stability of a Single Machine Infinite Bus (SMIB) system is presented. The SV...