Effect of inverter on power system quality

Includes bibliographical references (page 44)As residential customer becomes more energy conscious and environmentally aware, the installation of grid connected photo-voltaic solar panels for small scale electricity generation is expected to increase. However the issue of quality of the electrical supply is as equally important as adopting sustainable energy. When we talk about distributed generation we have to mention semiconductors and to be specific inverter. Inverter is an integral part of distributed generation. Inverter are required to make the RES (renewable energy source) usable and connect them to grid. But with its simplicity inverter has also raise some issues related to power quality and those issues have been discussed in this thesis. The thesis deals with mainly the use of inverter along with RES and its effect on power system quality. To undertake this study a simulation of 3 phase inverter was developed to observe the output characteristics of the inverter current and to know the harmonic levels in the inverter current. These results from the simulation were then compared with the approval standards and commercial inverter. The effect of harmonic distortion by inverter on Low and Medium voltage system were studied and the solution to overcome these negative effects of inverter has been discussed in this thesis. The standard related to power quality and the use of inverter in power system is extensively covered in the thesis. x There is a brief discussion on other issues related to interconnection of RES to existing grid and technical and nontechnical issues related to it and solution to overcome these issues have been discussed in the study