Determination of power factor and voltage stability in solar power plants

The decrease in the reserves of fossil resources day by day has led to an increase in the interest in renewable energy resources. The most preferred renewable energy is produced by wind, solar, hydroelectric systems. In this thesis, the power factor, voltage stability harmonic analysis and load flows in different load scenarios were evaluated by connecting the solar energy system, which is one of the renewable energy sources, to the grid. Working with solar energy systems from renewable energy sources, a system consisting of photovoltaic (PV) panel, Maximum Power Point Tracking (MPPT), DC/AC inverter, filter and non-linear load has been designed and simulated with MATLAB/Simulink-SimPower Systems. With the signal block, the power plant has been enabled to produce at different temperatures and radiation values. In order for power systems to operate smoothly and uninterruptedly, system stability must be ensured. The increasing demand for energy has brought along stability problems. In the thesis study, the parameters that affect the system stability are emphasized. Reactive power compensation is used to provide voltage control in solar systems. Correct determination of the power factor in solar energy systems is of great importance. It is very important to determine the issues that need to be determined beforehand when installing solar power plants. Among them: the power factor has an effect on cable, inverter conditional selection. Knowing the power factor will be an important guide in material selection. By using PSS@SINCAL power system analysis program of Siemens company, load flow, voltage stability and power factor analyzes and evaluations were made for different scenarios depending on the current load.