4.872 KW GRID-CONNECTED PV SYSTEM RESULTS AND TESTING AT RAJAMANGALA UNIVERSITY OF TECHNOLOGY (RMUT), THAILAND

摘要

This paper is to present 84 panels of amorphous silicon (a-Si) Solar cells that has 58 W 63 V per panel (Kaneka Solar PV) and the total power is 4.872 kW. The solar panels installed on building top of the Electrical Engineering Building at Rajamangala University of Technology (RMUT), Nonthaburi, THAILAND is 71 m{sup}2. This project has two important objectives. 1. Installation and testing results of 4.872kW Grid-Connected PV System (GPV), to find out the efficiency of PV array, Inverter and Overall. 2. Measurement generating energy in 12 months and calculate generating cost, save cost and average power generation. Three 2.2 kW single-phased Grid-connected inverter generated supply to the distribution system. The control and monitoring system use the Leonics Apollo View Software. The 4.872kW GPV can potentially produce 6,444 kWh of electricity per year and it can save electric cost for Bt15,010.40 (USD375.26) per year. The cost for generated electric energy is Bt8 (USD0.2) per kWh, average power generation is 0.25 kWh/m{sup}2/day. The overall efficiency of this system is 32.60%, efficiency of PV arrays is 40.12% and efficiency of Grid-Connected inverter is 81.39%.