From: Crissup, Phil
To: Howell, Leon C; Perkins Jr, Mel; Kuebeck, Peter
Cc: Morphis, Kim; Clear, Gary; Holloway, S K
Sent: 5/22/2003 4:37 PM
Subject: RE: Muskogee redispatch

Leon;
OG&E was never contacted by SPP or CSW to address the limits identified
in the study that subsequently was used to grant transmission service.
Pehaps because the limit was identified in the study for the unlikely
event of when three 345kV lines and one 138kV line were out of service.

By this e-mail, I'll initiate a project to raise the limiting elements
on the Bristow - Bluebell 138kV line, which appear to consist of at
least an 800 amp trap and a 600 amp CT at Bristow, along with an 800 amp
trap at Bluebell.  

The next limit is listed as a relay limit at Bristow at 849 amps, which
would raise the existing rating from 143 MVA (600 amps) to at least 203
MVA (849 amps).

The breakers at Bristow are rated 1200 amps, with the conductor right
behind at 1289 amps.

Philip L. Crissup
Manager, Transmission Planning
OGE Energy Corp.
phone: (405) 553-5931

> -----Original Message-----
>From: 	Howell, Leon C  
>Sent:	Thursday, May 22, 2003 4:17 PM
>To:	Perkins Jr, Mel; Crissup, Phil; Kuebeck, Peter
>Cc:	Morphis, Kim; Clear, Gary; Holloway, S K
>Subject:	Muskogee redispatch
>
>Gentlemen,
>Attached is a System Impact study performed by AEP in 1999 that
>indicates the Bristow - Blue Bell line overloads (100.4%) during
>transfers from AEP to Energy and Ameren (400MW each) in the winter of
>2000/2001.  It also show an outage distribution factor of 7.945% which
>is very close to the 8.71% indicated by Pete in his analysis of the
>redispatch on May 16, 2003.  My question is - Why wasn't this
>limitation addressed before the transmission service was granted.  Ok
>fact is it wasn't - If the limit is only a CT, we should change out the
>CT or breaker if necessary ASAP to eliminate the threat of further
>costly redispatch.
>Leon
>
> << File: Peco Study.doc >>