PowerQuality Analysis atanEnergy Facility

A powerquality investigation andanalysis foran onthecritical powersource. Temporary monitoring was energy facility arepresented. Theenergy facility hasbeen performed atthree oftheDCScabinets located inthefacility, experiencing problems withuninterruptible powersupplies and thecritical powerandinverter panels intheAuxSubbuilding, 24V dcpowersupplies fortheir distributed control system due aswellasontheprimary ofoneoftheharmonic mitigating tothestart-up ofthegenerators. Powerquality monitors were transformers. Oneportable powermonitor was installed at installed atvarious locations throughout thefacility. Theresultseachlocation torecord voltage andcurrent RMS values and andrecommendations fromtheanalysis aredocumented. disturbance waveforms during thestartup ofthegenerators.