Load Flow Simulation of Radial Shipboard Network Structure with Direct Current Distribution Systems

Abstract

The aim of this research is to investigate load flow of direct current distribution system on trimaran ferry ship. Radial Shipboard Network Structure with Direct Current Distribution Systems has been proposed in this research. Load flow simulation has been done by calculating electrical load calculation based on ship operation. Then, the one-line diagram of direct current distribution system is developed on electric power software. Simulation results show that direct current distribution system has been successfully implemented on hybrid powered trimaran Ship. In sailing conditions, the overall real power requirement is 20,201 MW and the reactive power is 7,757 Mvar. While the power distributed is 20,493 MW of real power and 7.816 Mvar of reactive power. In manoeuvring conditions, the actual power requirements are 21,251 MW and the reactive power is 8,16 Mvar and for power distributed is 21,573 MW of real power and 8,224 Mvar of reactive power. In loading and unloading conditions, the actual power requirements in this operating condition are 0.616 MW and the reactive power is 0.292 Mvar and for power distributed is 0,635 MW of real power and 0,296 Mvar of reactive power. In the condition of entering the port, the required power is 12.906 MW for real power and 4.969 MW for reactive power and for power distributed is 13,027 MW of real power and 4,994 Mvar of reactive power. The result showed that the concept direct current distribution system has been successfully developed in this research to combine diesel generators with marine renewable energy to make sure that the distributed power stay adequate all through operation.

Estimation of Hourly Solar Radiations on Horizontal Surface from Daily Average Solar Radiations Using Artificial Neural Network

“…Photovoltaic (PV) panels for solar-to-electric energy conversion have been commercially available for over 60 years. In the last decade, the use of these devices in fields as diverse as the domestic, industrial, and transportation sectors has grown rapidly due to campaigns for cleaner energy sources and concerns over the depletion of fossil fuels [1]- [6]. Although PV panels are widely used, research into methods for increasing the efficiency of such systems is still ongoing, as the high price and low efficiency of PV cells force the development of efficient topologies, control, and management systems, or a combination of the above, to decrease the cost/energy ratio of PV-based energy sources [7], [8].…”