REACTIVE POWER COMPENSATION IN SOLAR PV SYSTEM WITH POWER QUALITY ANALYSIS

Abstract

Electricity is a basic need in all developing and developed countries, all kinds of industries, agriculture, commercial buildings, households etc. required electricity to function effectively and efficiently, thus electric energy is important to every country for its development and country growth. The major sources of energy are based on fossil fuels but they are limited, so nowadays we are moving towards renewable energy sources like solar, wind, tidal, biogas, hydro etc. Thermal power plants are widely used in mostly parts of the country, basically thermal power plant based on coal, however, due to limited availability of fossil fuel and emission of greenhouse gases makes it necessary to regulate the use of fossil fuels and develop the renewable energy sources which are sustainable and environment friendly. Renewable energy sources like hydro, wind and solar have become standard for electrical energy sources these days, nowadays there are loads of experimentation work happening in the field of renewable energy to further improve their productivity and efficiency. In the present years in all over the world power is generated through the photovoltaic system have grown rapidly. The grid connected PV solar systems have become popular across the globe and have great scope to cater major portion of electrical energy demand in future. Grid connected PV solar farm has the capability to transfer the solar energy to the grid and further improve the power quality of the system at the point of common coupling. The equivalent electrical model of the PV cell is studied to understand the PV characteristics and its dependence on solar irradiation and the temperature. Design and development of a boost converter for MPPT in the PV system are discussed and modelled. Model of “grid connected photovoltaic solar system” using boost converter is developed and simulation results are presented and discussed for dynamic solar irradiation, temperature and load conditions. This dissertation work “reactive power compensation in solar PV system with power quality analysis”, focuses on the electrical modelling of PV cell, conventional MPPT technique “perturb and observe” and reference current generated for the hysteresis current control using conventional SRFT and unit template current control techniques are studied. The simulated results of SRFT and unit template current control techniques are compared with different environmental and load conditions taking into account.