Methodology for allocation and sizing of dispersed photovoltaic generators in isolated microgrids in the Amazon region

Renewable energy sources based on photovoltaic generation (PVG) are promising energy alternatives to complement conventional, as the diesel thermal plants in cities remote in the Amazon Region. The allocation and sizing of generators for DG application is a challenging problem, with technical and economic implications. The PVG presents added difficulty, as it is a function of environmental conditions, mainly temperature and solar radiation. This paper proposes an analytical methodology to allocate and size active power PVG units with embedded DC/AC inverter to be integrated as concentrated or dispersed generation in isolated medium voltage electrical grids. The proposed methodology considers multiple objectives: improving the electrical grid voltage profile; reducing active power losses and the diesel generation participation, reduction in diesel and in the pollution. The global obtained solution of the proposed method is a weighted commitment to these goals, presenting different weights according to priorities established in the electrical system planning.