Path Rating Catalog 2013 - Western Electricity Coordinating Council

73. North of John Day
Revised December 2011
Accepted Rating
Existing Rating
Other
Location:
Definition:
Transfer Limit:
Critical
Disturbance
that limits the
transfer
capability:
When:
System
Conditions:
Study Criteria:
Remedial
Actions
Required:
Formal
Operating
Procedure:
Allocation:
Interaction
w/Other
Transfer Paths:
Contact Person:
Southern Washington/Northern Oregon
Sum of the flows on the following lines:
Line
Metered End
Raver-Paul 500 kV
Raver
Wautoma-Ostrander 500 kV Wautoma
Wautoma-Rock Creek 500 kV Wautoma
Ashe-Marion 500 kV
Ashe
Ashe-Slatt 500 kV
Ashe
Lower Monumental-McNary 500 kV McNary
Limits established in SOL studies
Spring – 8000 MW
Summer – 7800 MW
Winter – 7700 MW
Two Palo Verde unit loss
PDCI Bipole
The path is limited for outages that local steady state voltage instability.
System Operating Limit (SOL) studies are completed on an annual basis as
part of Path 66.
Load: light winter, heavy spring, and heavy summer
California-Oregon Intertie (north to south) – 4800 MW
California-Oregon intertie (south to north) – 3675 MW
Pacific DC Intertie (north to south) - 3100 MW
Coulee generation - 5600 MW - 7000 MW
Lower Columbia generation low (spring and summer fish flush levels)
All applicable BPA and WECC/NERC criteria.
Third AC RAS - Gen Drop at Chief Jo, Coulee, John Day, McNary/Chief Jo
Brake. RAS Reactive Switching in the Northwest. FACRI - Fort Rock series
capacitors and Malin MSC.
Accepted COI vs NJD seasonal operating nomograms developed by NOPSG
for winter, spring, and summer. Refer to BPA Dispatcher Standing Order
#306, “COI/NW-Sierra, PDCI, North of John Day nomogram operation with
north to south powerflow and NOPSG reports for COI+Alturas/PDCI vs.
NJD nomograms.
COI (Path 66)
PDCI (Path 65)
Berhanu Tesema (TPP-OPP-3)
Bonneville Power Administration
7600 NE 41 st Street, Suite 340 P.O. Box 61409
PART VI Item 1-185