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Old 07-21-2012, 03:22 PM   #1
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PoCo people, please interpret


Here's an article on Pepco's recent performance
http://www.washingtonpost.com/local/...lwW_story.html

I had to use a spreadsheet to make sense of these numbers and what I found was that:
-by the end of day 1 the repairs per crew for Pepco was 13 and for Dominion, 40.

Are either of these numbers, or their ratio, reasonable?

-by the end of day 4, depending on how many crews were actually working for P and for D,
repairs/crew for P = 332 vs. D = 253, so Pepco does better
or
repairs/crew for P = 111 vs. D = 136, so Pepco does worse

Same question as above.
Any comments are welcome.

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Old 07-21-2012, 06:53 PM   #2
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PoCo people, please interpret


How does any of this take into account the severity of the damage, urd systems versus overhead distribution or other parameters? I've seen repair crews at work and I'm thankful I'm not doing what they are under the conditions under which they work. Certainly one of the POCO's crews are just a bunch of slackards.

Now if you wish to discuss POCO's cut backs on crews, or they're lack of infrastructure updates to maximize shareholder profits that's another discussion.

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Old 07-21-2012, 07:10 PM   #3
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I don't know how the report accounts for those parameters but I am glad I'm a DOM, and not a pepco, customer. Our power (underground distribution in neighborhood) was only out for 19 hours.
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Old 07-22-2012, 06:22 PM   #4
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PoCo people, please interpret


With this many outages and assuming D's area was exposed to the same damage as P's area, this comparison should be valid.

But it seems from the article that Pepco's president is calling it's customers unreasonable.
How did this guy ever get into a position of responsibility?
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Old 07-22-2012, 06:26 PM   #5
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PoCo people, please interpret


Quote:
Originally Posted by Yoyizit View Post
But it seems from the article that Pepco's president is calling it's customers unreasonable.
How did this guy ever get into a position of responsibility?
Sounds like a straight shooter to me....I like that.

I have Pepco BTW. We need politicians like that.
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Old 07-22-2012, 06:36 PM   #6
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Quote:
Originally Posted by zappa View Post
Sounds like a straight shooter to me....I like that.

I have Pepco BTW. We need politicians like that.
straight shoot·er
Noun:
An honest and forthright person.

He is honestly stating his opinion, which is unfortunately wrong. People probably died from that outage.

He should not run for office because, to say the least:
he says what's on his mind without editing or censoring
he comes across as callous

not that we haven't had presidents with those same qualities.
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Old 07-22-2012, 08:48 PM   #7
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I am in the PEPCO area up in the MD burbs. Lived in my house for 15 years the first 11 of which had extremely reliable power. Then came deregulation and the rest is history. There was a couple year stretch where I was without power for over 2 weeks cumulatively with the longest outage being 4 1/2 days. This with with my 'hood having all power lines underground. Obviously the feeders aren't. These events ranged from the serious (snowmageddon, Irene) to the ridiculous (one day lost power whan alls it did was drizzle for 30 minutes).

Somehow I did not have an outage in this latest event which throroughly amazed me. There was a WaPo article that gave PEPCO credit for having fixed up a certain % of feeders and substations so maybe my 'hood benefitted? No way to know for sure so I am still not resting easy... I bought a generator. With PEPCO as your power deliverer (I've been buying the electricity from someone else after PEPCO destroyed a TV and a garage door opener in a surge after one of the outages and refused to compensate me) you need to become self sufficient.

Last edited by raylo32; 07-22-2012 at 08:52 PM.
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Old 07-23-2012, 12:05 PM   #8
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I don't know about those specific companies. I'm sure some electric companies are better than others when it comes to restoring power. But before making judgments, various factors should be considered...

In my area, priority is given to certain electric customers like hospitals, rest homes, 911 call centers, water and sewage treatment plants, etc. People's lives could depend on those facilities having electricity. (A sewage treatment plant releasing raw sewage could cause illness.)

Then next priority is the biggest "bang for the buck". Maybe 1000 customers could have their power restored by fixing one thing.

Very low priority would be 1 home that would take a crew an entire day working to restore power.

And then you might get a large city area where there are mostly buildings, mostly underground lines, and maybe one main line out. Otherwise the power lines are all ok. So restoring power to all those customers would be fairly easy.

But in a rural area with zillions of trees and zillions of down power lines, it could take many days of work to restore power to just a few customers.

Another thing is travel time of the crews to where the lines are down. If there is a repair crew office and there are nearby outages as well as outages 50 miles away (1 hour each way travel time), then they would be best to start restoring power at locations closest to their shop. They could work 2 hours more per day and get more people's power back on sooner. (Work on the further away locations last.)

In my area I've seen power outages which can be easily fixed in one hour by one person replacing a fuse (squirrel shorted a line). In another case for the same area, it took crews of several trucks working two days to restore power (many trees fell knocking down many poles and lines).

In one case several miles of poles all broke and fell (domino thing). I think that took 2 weeks to replace all the poles and lines.
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Old 07-23-2012, 12:19 PM   #9
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Trying to analyse whether one crew is more efficient than another is meaningless unless the tasks are identical. Now if one crew took 6 hours to replace a transformer that another crew did in 2 the data would have some validity. As the others has said there are too many variables to try and analyse the "data".
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Old 07-23-2012, 04:12 PM   #10
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Quote:
Originally Posted by raylo32 View Post
I bought a generator.
Por favor,
what size?
does it power the central air?
do you have hard start kits installed?
Gracias.
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Old 07-23-2012, 04:13 PM   #11
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Quote:
Originally Posted by Jim Port View Post
if one crew took 6 hours to replace a transformer that another crew did in 2 the data would have some validity.
Show your calculations.
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Old 07-23-2012, 04:21 PM   #12
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No, doesn't power my 3T central air. Need a BIG genny for that to handle the startup surge. Mine is just 4.5 KW but will do what I need... refrig, gas furnace, PCs, TV, network gear, lights.

BTW, yes, I have a hard start on my A/C. Put it on last year when I replaced the evap coil with one that has a TXV.


Quote:
Originally Posted by Yoyizit View Post
Por favor,
what size?
does it power the central air?
do you have hard start kits installed?
Gracias.
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Old 07-23-2012, 04:28 PM   #13
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The thing about PEPCO and this latest event... Ironically it is probably one where what PEPCO is saying actually makes a little sense. It WAS a severe event that developed rapidly and with little warning. But the problem is PEPCO's history of multiple outages of long duration over the past few years. A couple of the events were relatively severe albeit with a decent amount of warning time. But many were for extremely minor events or for no discernable reason whatsoever. So, yes, PEPCO may be taking a little extra undesrved heat over this latest but they have brought it on themselves by their dismal, and I mean DISMAL, performance over the past few years.
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Old 07-23-2012, 04:41 PM   #14
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Task: Change pole mounted transformer.

Crew A: 6 hours
Crew B: 2 hours

Answer, 2<6, Crew B is faster.
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Old 07-23-2012, 06:29 PM   #15
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Quote:
Originally Posted by raylo32 View Post
No, doesn't power my 3T central air. Need a BIG genny for that to handle the startup surge. Mine is just 4.5 KW but will do what I need... refrig, gas furnace, PCs, TV, network gear, lights.

BTW, yes, I have a hard start on my A/C. Put it on last year when I replaced the evap coil with one that has a TXV.
Thanks.
A Generac at Costco is going for 17 cents/W, just above HF's 10 cents/w.
In the fall I may buy the thing.

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