Interactive electric power management systems
This paper reports that one of the feeders serving your double-ended 13.8 kV/480 V substations below toward the end of the graveyard shift last night, and switching was performed immediately to isolate the faulted feeder. By first shift startup time, tie-breaker closing and other necessary switching was completed to serve the affected substations from one end only. Plant load, however, had grown over the years, and only one transformer will not accommodate full load at any of the substations. An electrician is dispatched to each substation to continuously monitor transformer temperature and load readings sand outgoing 480-V feeder current readings. The electricians are instructed to keep you advised by telephone so the informed decision necessary to issue load-shedding instructions can be made. However, trying to obtain continual updates from multiple remote substations by voice telephone falls short as an effective means of communication. And the situation is not improved by the plant manager camped at your elbow - he's there because he also cannot get through to you by phone. By midmorning, the situation is hopeless. All production employees are sent home, and employees scheduled to report on subsequent shafts are contacted at their homes and told not to report or work until further notice. The money that will be lost in idle time and lost production will eclipse the cost of replacing the faulted feeder.
- OSTI ID:
- 7116902
- Journal Information:
- Plant Engineering; (United States), Vol. 46:6; ISSN 0032-082X
- Country of Publication:
- United States
- Language:
- English
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