Doug,

Thanks for the update, glad to know that I wasn't going completely crazy.

Lance

-----Original Message-----
From: Evans, Doug [mailto:DEvans@ercot.com]
Sent: Tuesday, November 20, 2001 3:02 PM
To: Cunningham, Lance
Cc: Conto, Jose; Donohoo, Ken
Subject: RE: Generation shift factors


Lance,
You are correct. I had corrected the idevs that TXU had sent to leave
everything in area 51, but the old data was not being extracted
properly. Delete the raws that you had previously downloaded. They will
have extra busses and lines due to the error. TXU has a process to put
their data into the old areas for their internal use.

 I fixed the idevs to remove the old data and have sent them to our IT
department along with the new raw data (even included the line upratings
from TXU for the sum, fal, and win cases). The summer raw data is
attached.

have a good thanksgiving,
doug
 <<SS02sum1r.zip>> 

>  -----Original Message-----
> From: 	Cunningham, Lance  
> Sent:	Thursday, November 15, 2001 3:19 PM
> To:	Evans, Doug
> Cc:	Conto, Jose; Donohoo, Ken
> Subject:	FW: Generation shift factors
> 
> Doug,
> 
> Could you please help me with this.  
> 
> I talked with Jose on the phone and he said that the eight buses that
> are in my case are the ones that are present if the TXU IDEV is not
> run on the case.  
> 
> Thanks,
> Lance  
> 
>  -----Original Message-----
> From: 	Cunningham, Lance  
> Sent:	Thursday, November 15, 2001 10:21 AM
> To:	Joe Conto (E-mail)
> Cc:	Ken Donohoo (E-mail); Lin, Martin
> Subject:	Generation shift factors
> 
> Jose,
> 
> As we discussed, I am still getting different shift factors for the
> buses compared to your computations.  Since we are using the same
> software, we should get the same results.  
> 
> I have attached a spreadsheet that compares my GSFs to your GSFs.  My
> GSFs have been computed from the 2002 Summer Peak basecase that is
> posted on the ERCOT system planning web page.  If you download the
> 2002 Summer peak file you can verify my GSFs, it would only take about
> five minutes for one CSC.  I have had this independently verified by a
> third party that the process that I have used and the results I have
> presented are correct. 
> 
> If you look at my results, you will find that my case has 8 additional
> buses that your case doesn't have.  The buses are:
> 1247 WINK BET
> 1421 WILLOWCK
> 1880 ROCKY CK
> 1881 ROCKY CK
> 2007 IV VALV2
> 6023 ESTEL2WT
> 6491 PAVEPAW2
> 6492 PAVEPAW 4
> 
> I think that Shannon Caraway of TXU had already brought up four of the
> buses on the list; 1247, 6023, 6491, and 6492.  Ken responded to that
> e-mail that the buses were "code 4" and were not connected in the
> case.  I haven't researched the other four to see if that is also
> true.
> 
> I have looked at the IDEV files on your website and noticed that in
> the TXU IDEV file that TXU is listed as area 1.  However in the load
> flow cases, ERCOT has only three areas.  ERCOT is listed as area 51,
> DCEAST is listed as area 52, and DCNORTH is listed as area 53.  
> 
> The following is an assumption on my part: if you try to run the IDEV
> on the three area cases posted on the website, since there is no area
> 1 in the case, the IDEV will not remove the area and replace it with
> the updated TXU data.  Therefore, the cases that are posted on your
> website (8/24/01) actually have not had the IDEV run on them.
> 
> I appreciate your help on this.  I have to be able to duplicate you
> results for internal purposes and I'm only trying to understand what
> is going on with these cases.
> 
>  << File: 2002SP  GSF for CSCs.xls >> 
>    
> Thanks again and I look forward to hearing from you
> Lance B. Cunningham, P.E., Ph.D.
> Enron Wholesale Services, Research
> 1400 Smith Street
> Houston, TX  77002-7361
> (713) 345-4186  FAX (713) 646-2503
>