Jump to content
DC Message Boards
Sign in to follow this  
Guest DCpages Staff

Power Outages Throughout DC

Recommended Posts

Guest DCpages Staff

For the past few days District residents have been experiencing partial and full power outages. So far PEPCO has been able to successfully restore power.

 

There are several reasons why high temperatures can cause outages.

 

There is also the possibility of scattered outages resulting from equipment overheating. Transformers, for example, can fail from overheating. Transformers are built to dissipate their heat, but in extreme weather conditions such as we’re experiencing, there is no ability to cool because temperatures remain high throughout the night. Problems are also magnified in the confined spaces of an underground electrical system. For example, if there is a flaw or crack in the cable insulation, a short circuit could occur as the cables expand from the heat.

Increased demand for air conditioning means more electricity flowing through power lines. This causes them to heat up and expand or sag, and in some cases they sag into tree branches, causing a short circuit.

Electricity loads combined with high temperatures cause transformers to heat up, sometimes reaching critical levels that if uncorrected would permanently damage the equipment. The equipment will automatically and safely shut down to protect itself and other equipment.

High current causes stretching of cables, switches and other equipment and can increase the size of minor flaws in insulation or connections.

Electric equipment can be weakened by lightning strikes and circuit failures, making it more susceptible to an outage as it can no longer withstand the increased flow of electricity during periods of high demand.

Share this post


Link to post
Share on other sites
Guest human_*

When thunderstorms hit? They "High winds, and heavy rains" cause tree branches to fall on the lines.

 

When the tree branches fall on the lines? The Power Company WILL send three surges through the line, in order to knock it off or burn it off, IF that fails? Then the line will automatically shut itself off.

 

So when you see your lights flicker in your place, THAT is the reason why.

-----------------------------------------------------------------------------------------------------------------------

For the past few days District residents have been experiencing partial and full power outages. So far PEPCO has been able to successfully restore power.

 

There are several reasons why high temperatures can cause outages.

 

There is also the possibility of scattered outages resulting from equipment overheating. Transformers, for example, can fail from overheating. Transformers are built to dissipate their heat, but in extreme weather conditions such as we’re experiencing, there is no ability to cool because temperatures remain high throughout the night. Problems are also magnified in the confined spaces of an underground electrical system. For example, if there is a flaw or crack in the cable insulation, a short circuit could occur as the cables expand from the heat.

Increased demand for air conditioning means more electricity flowing through power lines. This causes them to heat up and expand or sag, and in some cases they sag into tree branches, causing a short circuit.

Electricity loads combined with high temperatures cause transformers to heat up, sometimes reaching critical levels that if uncorrected would permanently damage the equipment. The equipment will automatically and safely shut down to protect itself and other equipment.

High current causes stretching of cables, switches and other equipment and can increase the size of minor flaws in insulation or connections.

Electric equipment can be weakened by lightning strikes and circuit failures, making it more susceptible to an outage as it can no longer withstand the increased flow of electricity during periods of high demand.

Share this post


Link to post
Share on other sites
Guest
You are commenting as a guest. If you have an account, please sign in.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoticons maximum are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×