Modelling, Testing and Economic Analysis of a Small – Scale Hybrid Wind-PV-Battery System Installation.

Abstract

In this paper the performance of a practical smallscale hybrid Wind-Photovoltaic-Battery system installation is thoroughly investigated. The system has been installed on the roof of the Electrical Engineering Laboratory Building in Xanthi, Greece and on-site measurements of the main electrical quantities of this system are automatically monitored. A meteorological system has also been installed on the top of the same building and sufficient wind, solar, etc., measurements are continuously taken and processed/evaluated for the purpose of the present paper.

In order to thoroughly evaluate energy wise this installation, a computer program was developed with which the main subsystems of this hybrid system were modelled and practical simulations were performed to technically and economically assess its steady state performance under different types of operation (i.e. autonomous or grid connected mode). Using this program, appropriate economical indices were computed in a systematic manner to examine the economic viability and exploitation of a power system of this type. In addition associated non-financial positive attributes were evaluated, i.e. local/national environmental and socio-economic development impacts.