The SINCRO.GRID project is a smart grid investment project of European importance in the territory of Slovenia and Croatia. Its conformity with EU policies in the area of smart grids having now been proven and the project is co-financed from the Connecting European Facility fund. 


Many years of successful cooperation between the power systems of Croatia and Slovenia achieved technical perfection with the construction of the 400 kV TESLA loop and a strong interconnection to mainland Europe. Political changes in the 1990's and legislative changes after 2000 in these two countries have left them with a system that has to operate in conditions for which it was not designed or constructed. In recent times, the system's flexibility deficiency in terms of voltage and frequency control has reached its limit, which could potentially endanger the future development of electricity generation from dispersed and renewable energy sources and threaten the reliability of the power system's operation.

Bilateral technical discussions between the two countries in 2014 have shown numerous similarities in technical deficiency. In this period the transmission system operators (HOPS and ELES) and distribution networks (HEP – ODS and SODO) of Croatia and Slovenia began to search for joint solutions. The most promising solution appeared to be the establishment of international cooperation in the implementation of smart grids. This would increase the technical and economic efficiency of invested capital, human resources and technical know-how. And the idea of the SINCRO-GRID project was thus born.

The partners in the project have gathered various traditional and new approaches in a smart grid package that includes investments in infrastructure, technologies and processes. Croatia and Slovenia have decided to submit this project to the European Commission as a proposal of common European interest (PCI project) in the area of smart grids.

Since the project primarily addresses problems occurring in the transmission network, it will be managed by the transmission system operator; each operator shall be responsible for the implementation of foreseen technologies in their respective systems. The distribution grid operators will strengthen the observability of the distribution grid by providing tools for the advancement of dispersed generation, which will help TSOs to forecast needs for system services and voltage profile operation. The control centres of distribution and transmission grid operators will be connected via IKT infrastructure and integration systems (primarily using the semantic model – CIM).



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