David Dahle

David Dahle

Posted on 08/24/2014


Photo taken on August 24, 2014


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13.8kV


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Xcel Energy - Sioux Falls, SD

Xcel Energy - Sioux Falls, SD
We got hit by a nasty thunderstorm early this morning - woke up shortly after it started only to realize the power had gone out (I could have been awakened by the thunder - who knows?). It finally came back on at 11 - but everyone to the west, east, and south NEVER lost power (maybe a blink or two - but that time of night, probably went unnoticed).

I, on the other hand, am served off a branch off an express-lane 34.5kV line I now know originates from the Cherry Creek sub and it appears the entire 34.5kV system out of that sub was offline (I drove out that way about 8AM and saw a few places that are evidently on the 13.8kV side of that sub and they had power).

So the fact that a 13.8kV line now passes by barely even a dozen yards from my house is even more aggravating.

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Comments
Power Lines
Power Lines
It could be worse....

Where I lived, we were on a 13.2kV single phase lateral shoehorned onto 25' secondary poles. This line serves three customers and runs for about 4 spans total, and is tapped directly off of a major 23kV feeder. The transformer I was served off of was ONE SPAN AWAY from the three phase feeder, but we'd get weeklong power outages just about every year when a tree fell further down the single phase line. And since the line only served three customers, it would be last on the list to be repaired in case of an outage.
4 years ago.
Justin S
Justin S
Seems there are issues with the 34.5 kV system in my area too. Each of the distribution feeders cover such a widspread area that covers a large number of customers- probably close to 6000 customers or more I'd say. The reliability just doesn't seem to be there. I don't know if its a protection / coordination issue or what. I don't know the details, but just recently there was a power surge that blew up a bunch of equipment at various places in the industrial park here in town.

All I know is that I'm on the 13.8 kV system, and despite being on a relatively long single phase line (for in town) the reliability has been good. I may have jinxed myself there, but I do have a generator just in case.
4 years ago. Edited 4 years ago.
Power Lines
Power Lines
I've got two generators now... : )

They certainly come in handy in hurricanes and storms. I've had to use them every year.
4 years ago.
Tony Glen
Tony Glen
I'm currently fed off of a 7.2kV single phase Delmarva Power line that is fed from the Centreville Substation (9 miles from my house) and about twice a week I lose power because of the 230kV line work going on near by.
4 years ago.