SPS DC tie Scheduling Practice
Due to the different default ramp durations in the WECC region and the Eastern
Interconnection, the SPS balancing authority is seeing a conflict that is causing
fluctuations in the net scheduled interchange.
Starting on 9/18/2006 we will make notifications if the duration profiles are not
specified on the tags involving transactions scheduled across the DC ties.
Effective on 10/1/2006, SPS will only accept tags involving transactions
scheduled across the DC ties that have a ramp duration profile designated on the
tag. This is to prevent a conflict in the default ramp rates that will impact the
scheduled interchange.
The POR and POD that this practice will impact are as follows:
Eddy
BLKW
Lam345