UNINTERRUPTIBLE POWER GENERATION SYSTEM

摘要

A power delivery system (102) including a primary power bus (103) for transferring power to the facility (100) from on-site generators (104), and a secondary power bus (106) for transferring power to the facility (100) from a utility (108). The system (102) further includes a static disconnect switch (110) capable of quickly isolating the facility (100) from the utility power grid, and a controller (112) for controlling the overall operation of the power delivery system. In a normal mode of operation, the utility (108) supplies power approximately in the mount of the single largest load in the facility (100), with the remaining power being supplied by the on-site generators (104). If one or more of the generators (104) goes off-line, the power supplied by the utility drops below a predetermined level, the static disconnect switch (112) quickly opens and islands the facility (100), whereupon 100 % of the power is supplied by the generators (104).