Getting the Lights Back On
Electric Cooperative experiences multiple power outages, its goal is
to restore service to the greatest number of consumers in the
shortest amount of time. Linemen begin at the power source and
work their way out to the individual services. Dangerous problems,
such as downed power lines, are repaired as soon as possible.
is the first location the repair crew checks. A substation is the
power source for a particular geographic area. Sometimes service
to these customers can be restored immediately by replacing a fuse
on the substation transformer or switching the feed and isolating
the damaged line.
work their way out on the main distribution line, restoring
service to the main feeder lines, then lines serving groups of
homes and finally, individual consumers. Fixing the power at an
individual home first is useless if the main line is dead - no
electricity would flow into the home anyway. By repairing the main
line first, many more people would have their power restored.
above shows that Step 1 would be repairing the main distribution
line from the substation. Since there is no additional damage
leading to buildings A or B, this would automatically restore
their power. In Step 2, the problem with the tap line leading off
the main line would be cleared up. This would restore power to
buildings C & D.
After the high
voltage lines are repaired, power to individual members (house E
in the diagram) would be restored (Step 3). The entire system
would then be in good working order.