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Simulations and analysis of voltage stability and its influence on power quality are presented in this article. The voltage stability concern to the capacity of the power system to maintain an appropriate voltage profile, both in normal operation and in the event of severe disruption. Methods of assessing stability used here are based on the use of algebraic equations obtained from the model of power...
This work presents a description of the development of a model for representation of simplified grid applied in hybrid load flow for calculation of the voltage variations in steady-state provoked by wind farm on power system with two different treatments for boundary buses. At the beginning of the analysis process on system, lead for the wind producer, it has as base given technician data supplied...
This paper presents a new load flow based on Newton-Raphson method. The matrices used in the method are the constants matrices of conductance and susceptance. The proposed method uses the equations to calculate the voltages angles and voltages modules in decoupled form. In the scheme of iteration values most up to voltages angles are used to calculate voltages modules and the same procedure is used...
This paper proposes the application of a Particle Swarm Optimization (PSO) algorithm to the Load Flow calculation in Power Systems. The proposed methodology is based on the minimization of power mismatches in the system buses. The power flow study provides the system status in the steady-state and it is fundamental to the power system operation, planning and control. PSO is applied in a new computational...
The quality of the voltage levels in permanent regime demands an optimized electric system, with control of equipments and of the voltage profile in the several load patterns. The allocation and configuration of voltage regulators and capacitor banks become complex tasks, because it is a problem of combinatorial analysis with whole-mixed variables and non-lineal restrictions. With the objective of...
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