Implementation of Microgrid on Location Rostovo with Installation of Sustainable Hybrid Power System (Case Study of a Real Medium-Voltage Network)

Abstract

Distributed generation (DG) especially energy acquired from renewable energy sources (RES) plays a significant role in modern power sector due to high carbon emissions around the globe. It is an attempt to reduce these emissions and satisfy electricity demand. Its emerging potential is feasible by implementing microgrids. Higher cost and stochastic nature of intermittent RES are complications for the implementation and operation of such solutions. This paper analyzes economic feasibility and sustainability of implementation of hybrid power system (HPS) consisting of wind generator (WG), photovoltaic system (PVS), diesel generator unit and batteries as storage of energy. Technical analysis of the grid integration and parallel operation of the system and the grid are presented in the paper with an example of a real medium-voltage distribution network operating in Bosnia and Herzegovina. It is shown that implementing such HPS would be beneficial in terms of economy, ecology, as well as in reducing energy losses. Besides, it will reduce power supplying costs and secure better exploitation and utilization of natural renewable energy sources. These technologies positively affect power network by decreasing the risk of network-components overloading, need for network expansions, better exploiting the power-generation facilities based on renewable resources and positively impacting voltage profiles. Moreover, it is shown that the microgrid can operate in island mode with autonomous power supply for consumers. The microgrid could serve as an example to similar remote locations in order to reduce their costs of electricity, acquire more reliable and sustainable power supply, and embrace green future. All analyzes have been done by applying HOMER and DIgSILENT Power Factory professional software tools.