Design of Grid Connected Solar PV irrigation (DGCSPVI)

Abstract

This thesis presents the Design of a Grid-Connected Solar Photovoltaic Irrigation System (GCPVIS) with regard to the Democratic Republic of Congo (DRC). The design includes the, load determination, sizing of the solar panel, inverter rating and the grid integration parameters. Power Quality (PQ) aspects of the GCPVS are also investigated. To conduct this research, the methodology consisted of site selection, which was analyzed and studied. We also defined a suitable area for the System Installation and the choice was made for Beni territory. As we don’t have its specific meteorological data due to the inexistence of weather forecast institution, the entire city of Beni was been considered. The system performance for irrigation load to model was calculated through the performance parameters as the specific yield, the capacity factor and the performance ratio. The simulation was made using the engineering software's MATLAB. The results obtained were analyzed one by one according to output of power, voltage, current of the grid-connected solar PV for irrigation. In calculation, we have found the specific yield and the performance ration at 50KW three phase resistive load at a normal percentage. As revealed in the literature for filling in as a fast reference to specialists and engineers who are working or intrigued by the subject, the thesis of an MPPT controlled 50KW DC/AC grid connected PV system irrigation is shown. By using 50KW PV group generated with 11 Parallel panels and 21 series. And maximum power is 53KW at 1000W/m2 irradiation. MPP voltage is 850V. The Maximum power is extracted from the PV panel using P&O algorithm at variable solar radiance with a constant temperature of 250C. The inverter is used to convert the dc voltage of PV system into ac voltage. The switching frequency of the system is considered to be insufficient as 0.13% compared to 6 pulse and 12 pulses converters. This thesis has the utility which is focalized to analyze all needed steps which will help us to design and build an efficient and cost-effective Grid connected PV system. Note that the integration of the RE into the grid will be facilitated by a PED in other to maintain the reliability and stability of the system and finally achieve the goal for irrigation in DRC specially in Beni Territory.