Design, erection, testing and commissioning of 200Kwp rooftop grid tied solar photovoltaic system at Vasavi College of engineering

In this paper a detailed case study has been presented on design, erection, testing and commissioning of 200Kwp solar power plant at Vasavi College of engineering, Ibrahimbagh, Hyderabad. This paper deals with sizing of various equipments, specification of PV modules, Inverters, MCCB, Cables and associated protective equipment. Problems encountered during erection, testing, commissioning and operation and solutions adopted for these problems are discussed. The plant is generating on average 25,000 units per month resulting in a saving of Rs 2.5 lakhs per month in the electricity bill. Problems faced such as cable heating, Reverse power to DG set is dealt. The details of reduction in the efficiency of the plant due to various causes and methods for improvement are also discussed. One protective scheme namely PLC based power balancer protection scheme for DG protection is dealt. The monitoring of the PV plant is also discussed in detail in this paper.