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According to the specifications in IEEE 1894-2015, a transient process measuring device (TPMD) is developed to be used in the distribution system, and a line selection technique utilizing large pulse current is presented on this basis. When a single-phase grounding fault occurs, the distribution system is able to be instantly switched from grounding with small current to grounding with large pulse...
The power demand for a large cruise ship during berthing is close to 10 MVA. Such a power demand from the shore-to-ship requires multiple parallel feeds at medium voltage to match with the ship's connection point voltage. The cruise ship authority required installation of a neutral grounding disconnect switch (DS) and insulated ground conductor (IG) at the shore power transformer neutral grounding...
This paper serves as an introduction to the Guide for the Protection of Shunt Reactors (IEEE Std C37.109-2006). It briefly describes the material contained in the Guide and presents some examples. Those with further interest should obtain the complete document.
The power requirements on modern marine vessels are increasing. Many of the loads are changing from mechanical to electrical, and the propulsion systems are becoming all electric. Traditional low-voltage (LV) 480-V systems do not have the ratings to handle these large power requirements. Power will have to be generated at higher voltages, typically 4,160 V, 6,600 V, or above. These voltages must have...
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