Modeling of Stand-alone Power Supply System with Distributed Generation Sources

Increasing the efficiency and reliability of standalone power systems (SAPS) with distributed generation (DG) sources is an urgent task for the energy industry in many countries. Energy exchange between neighboring SAPS is a promising solution to this problem. The article is devoted to the optimal control of the operation modes of the microgrid, which consists of two SAPS. Energy sources include a gas piston unit (GPU) on biogas and a wind-diesel power station (WDPS). Mathematical models of the microgrid operation modes are presented. The analysis of the conditions for the possible energy exchange between SAPS has been performed. An algorithm to control the operating modes of the microgrid aimed at minimum consumption of diesel fuel and the minimum cost of electricity has been developed. A LabVIEW model of the studied microgrid has been worked out. A description of the LabVIEW-model blocks is illustrated and the research results on the blocks functioning are presented. The correctness of the LabVIEWmodel operation has been substantiated. The directions of further research based on the results described in the article are given.