Solar photovoltaic generation for contributing electric power demand at educational building.

The use of solar photovoltaic panel for generating power to contribute the power demand is presented in this paper. The system is installed at the rooftop of Islamic Senior High School Daarul Echsan Muhammadiyah Sragen (Madrasah Aliyah Muhammadiyah DIMSA). The purpose of this project is beside to contribute the power demand of the school, is also to be the learning tool for the students to understand how the power may be generated using the extensively available resources for free. The power so far used in the school is from the government electric utility company. The installed capacity is 23 kVA three-phase system. The photovoltaic panels placed on the roof is 8 x 545 Wp. The output of the panels is connected to 15 kW inverter and the output of the inverter is synchronized with the electricity grid. The produced energy is expected to contribute the electricity demand of the school. A number of measurements have been carried out relating the input parameter and the output voltage of the panels. This relation is essential for detail planning of development and operation of the generating system. The developed system is expected to sustainably operate for years therefore becoming a role model of fulfillment of energy demand in such way that is economical and environmentally friendly. [ABSTRACT FROM AUTHOR]