MessageFrom: Kuebeck, Peter
Sent: Monday, January 05, 2004 11:01 AM
Subject: Windfarm

Bob,

Summary

OG&E has curtailed Windfarm when conditions have warranted, the limiting 
factor being the 65 MVA rating on WFEC Moorland interconnect. The curtailments 
of the output have ranged from 2 to 10 MW. Reliable operations is dependent 
on low load conditions and high wind. These curtailments are coincident with 
low levels of system load, typically at off peak hours and weekends. 

Our discussion of the constraints encountered thus far with the Woodward 
Oklahoma Windfarm have provided a basis for offering a temporary operating 
procedure to avoid curtailments due to the 69 kV WFEC Moorland interconnection.

Temporary Operating Procedure

What we propose to improve the situation, temporarily, is to change the 
arrangement of the ring bus at the OG&E Windfarm station. We propose to 
"open" breaker 181, so that a fault on the Windfarm-Moorland line will isolate 
the Windfarm Generation units from load.

Ideally, we would open breaker 181 when the loading post contingency rating 
exceeded 95% and the close the breaker when the output of the unit caused the 
contingency to be less than 90%. 

Acceptance of Operating Procedure

We need for you and your engineering folks to analyze this temporary procedure. 
A prudent review would include the risk to the generators and contract impacts, 
due to improvement of our operations changes. Let us know when you would like to 
begin operating under this arrangement, and what changes you might suggest.

Thanks for your time. The discussion was constructive and helpful.



Thanks

Peter Kuebeck

OG&E