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For completely islanded industrial facilities, a stable and robust power system is absolutely essential. Such facilities are not able to rely on an interconnection to a utility grid to provide stability or act as a safety net in the event of large, on-site generation disturbances. Knowing the ramifications of operating an islanded facility, Saudi Aramco has taken great care to help design a complete...
One large Midwestern paper mill is resolving an arc-flash hazard (AFH) problem by installing microprocessor-based (muP) bus differential protection on medium-voltage switchgear and selectively replacing electromechanical (EM) overcurrent relays with muP relays. In addition to providing critical bus differential protection, the muP relays will provide analog and digital communications for operator...
This paper presents an adaptive protection scheme that adapts overcurrent-relaying functions to changes in shipboard power system topologies initiated by reconfiguration functions. Reconfiguration is an energy management function used by shipboard power systems to alter system topology to meet operational requirements. The adaptive protection scheme uses the data of the system to determine whether...
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