This paper discusses the indicators of development possibilities for sea ports of national importance which are opened for public traffic: Rijeka, Ploče, Zadar, Split and Dubrovnik, as well as for inland water ports: Vukovar, Osijek, Slavonski Brod and Sisak. Development of traffic and logistic integration processes have been proposed for Croatian sea and river ports, based upon development factors analyses. Croatian sea ports Rijeka, Ploče and inland water cargo ports Osijek, Vukovar, Slavonski Brod and Sisak have been analysed as delivery/forwarding points (nodes), taking into account the directions of goods flows, the participation in the traffic of goods, and all other relevant indicators. The integrated and coordinated approach to the ports and other subjects in the logistic chain redirects the traffic from roads to railways and inland waterways as energy efficient and environmentally – friendly forms of transportation, increases business rationality and optimal organisation users and transportation entities.
In this paper the majority of research refers to the optimal configuration of hybrid system that uses renewable energy and wind energy and solar radiation in association with diesel aggregate and batteries. These independent energy systems (hybrid systems) are becoming popular due to increasing energy costs and decreasing prices of turbines and Photo-Voltaic (PV) panels. But the only drawback is that their outputs depend upon the climatic conditions. The main goal to optimization a hybrid system is necessary to obtain the configuration of the system as well as the control strategy that minimizes the total cost through the useful life of the installation to meet the desired consumption and/or the pollutant emissions. The HOGA (Hybrid Optimizations by Genetic Algorithms) program was used to simulate the system operation and calculate technical economic parameters for each configuration. The system configuration of the hybrid is derived based on the data of wind and solar radiation which are related to the southern Croatian coast, as on a theoretical annual load at an observed location. Also, technical data for components are taken from the manufacturer's specifications (datasheet). In this paper the advantages and disadvantages of commonly used types of generators (synchronous and asynchronous generators) are presented. Results show that the hybrid systems have considerable reductions in carbon emission and cost of the system. ~Simulation ~Optimization ~Hybrid system ~Renewable energy ~HOGA KEY WORDS
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