Assessment of different topological integration of solar power plants in medium voltage distribution networks

Abstract

Storage of fossil fuels is limited. Burning of fossil fuels for electricity generation, transportation, heating, cooking, industrial production and other purposes cause emission of gases and other particles, which are harmful for environment. Emission of green hose gases causes global temperature increase. Sunlight is abundantly available than fossil fuels. Photovoltaic (PV) power plants are better than fossil fuel based plants in terms of environmental impact. To make and photovoltaic based plant efficient and cheaper it is important to integrate these systems into distribution systems properly. In this paper, an analysis of placement of photovoltaic system in different uses of medium voltage (MV) a distribution system has been done. Loadability, voltage levels, maximum power input has been analyzed. A comparative study has been carried out about fractioning effect of photovoltaic generator in distribution system. Results and analysis show that change in loadability due to placement and fraction of solar plant in different buses. Maximum input level of photovoltaic system varies with placement among different buses. Interaction among photovoltaic system, induction machine, dc machine and synchronous machine has been also carried out. Results found from this analysis show that interaction among photovoltaic system, induction machine, dc machine and synchronous machine were different in terms of loadability and voltage level. Fractioning of machines has also different impact on bus voltage level and loadability of system. Change in bus voltage level is occurred due to placement of photovoltaic system at different buses. Effect of integration of photovoltaic system into extra buses extended from different buses and effect of distribution of generation unit and fractioning were analyzed. Result has been found that change in loadability occurred due to fractioning and distributing of photovoltaic system on different types of design topology of system.