Neutral grounding in MV transformers substations for cranes service

In this paper ports power systems are described focusing analysis on typical container terminals, which have large power consumption loads in a typical port facility. Energy distribution organization of recurring electrical schemes are analyzed. Moreover, effects of ground faults in different power system sections are addressed as well as their impact on ports operations. This paper shows a description of the shipside and land side gantry cranes and their power supply grid. These represent the major electrical loads in big ports and perform most of the cargo-handling operations. Different system grounding techniques issues are addressed as well as their effects on ground faults, analyzing their impact on the continuity of service.