Title :
Is selectivity achieved in critical low-voltage UPS and standby generator power circuits?
Author :
Cossé, Roy E., Jr. ; Bowen, Jim
Author_Institution :
Kellogg Brown & Root Inc., Houston, TX, USA
Abstract :
This paper reviews typical critical low-voltage UPS (uninterruptible power supply) systems and standby generator power circuits used in the petrochemical industry to determine if selectivity is achieved between protective devices during short-circuit conditions. Alternate system configurations are proposed when selectivity is not achieved. Generator excitation systems and UPS support during fault conditions is discussed
Keywords :
industrial power systems; petroleum industry; power system faults; power system protection; standby generators; uninterruptible power supplies; UPS support; alternate system configurations; critical low-voltage UPS circuits; fault conditions; generator excitation systems; petrochemical industry; protective device selectivity; short-circuit conditions; standby generator power circuits; Circuit faults; Fault currents; Manufacturing; Permanent magnets; Power generation; Power system protection; Standby generators; Switches; Uninterruptible power systems; Voltage;
Conference_Titel :
Petroleum and Chemical Industry Conference, 1999. Industry Applications Society 46th Annual
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5601-2
DOI :
10.1109/PCICON.1999.806431
