Momentary power interruptions, often described as lights “flickering” or “blinking” very briefly can last from less than a second to just a few seconds. Even though the interruption is very brief, these types of interruptions can be annoying because they can affect some electronic devices and appliances in homes and businesses.
Why do they happen?
Momentary power interruptions can occur at any time, even on sunny days, and they can be caused by many factors and interferences, including:
What actually happens?
Most distribution power lines are protected by special devices called breakers and reclosers. These devices are able to detect line interferences and shut off the flow of power to that section of the power line for a split second. This design often allows any interference the ability to clear the power line on its own.
For example, if a tree branch makes contact with our power lines, the system detects this interference and shuts off electricity to that section of the line for a moment. If the contact is eliminated, either because the tree limb falls or snaps back into place away from the line, the problem is resolved without an extended outage. This is how momentary power outages can help to prevent damages and extended outages.
