NOTICE DATE: January 9, 2009
NOTICE TYPE:
M-A112008-04 Operations
SHORT DESCRIPTION: Sandow
Switch SPS will resume service
INTENDED AUDIENCE: ERCOT
Market Participants
DAY AFFECTED: January 9, 2009
LONG DESCRIPTION: Oncor Electric
Delivery proposed re-installing a Special Protection System (SPS) at the Sandow
Switch substation which was previously disabled/rejected by ERCOT due to
real-time local transmission issues. These issues have been addressed and
the SPS is approved to resume service. This SPS involves initiating a safe shut
down of Sandow Unit 4 upon detection of the loss of the Sandow Switch 345/138
kV Autotransformer. It also involves opening the Sandow Switch –
Minerva 138 kV Line upon detection of an overload condition on this line.
The
Sandow Switch SPS is expected to resume service Friday January 9, 2009.
Further details of the Sandow Switch SPS can be found in the “Special
Protection Systems Information” section of the Planning and Operations
Information secure website: http://planning.ercot.com/login/login.
CONTACT: If you have
any questions, please contact your ERCOT Account Manager. You may also call the
general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT
Client Services via e-mail at [log in to unmask].
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list that you no longer wish to receive, please follow this link in order to
unsubscribe from this list: http://lists.ercot.com.
sg