Path Rating Catalog 2013 - Western Electricity Coordinating Council
Path Rating Catalog 2013 - Western Electricity Coordinating Council Path Rating Catalog 2013 - Western Electricity Coordinating Council
14. Idaho to Northwest Revised January 2013 Accepted Rating Existing Rating Other Southwest Idaho and Eastern Oregon/Washington and Northern Idaho Location: Definition: Sum of the flows on the following lines: Line: Hemingway-Summer Lake 500 kV Imnaha-Lolo 230 kV Hells Canyon-Hurricane 230 kV North Powder-LaGrande 230 kV Hines-Harney 115 kV Transfer Limit: East to West: 2400 MW West to East: 1200 MW Seasonal Operating Limits (SOLs): East to West: 2400 MW Winter 2355 MW Spring/Summer/Fall West to East: 1200 MW Metered End Hemingway Imnaha Hurricane LaGrande Harney Critical Disturbance that limits the transfer capability: When: East to West: Thermal overload on the Walla Walla series capacitor for the N-1 loss of the Hemingway-Summer Lake 500 kV line. In the Spring/Summer/Fall, limited by the Walla Walla 1200 Ampere wave trap for the same contingency. West to East: Thermal overloads on the Imnaha-Lolo section of the Oxbow- Lolo 230 kV line and/or the Hells Canyon-Brownlee 230 kV line for the N-1 loss of the Hemingway-Summer Lake 500 kV line. Thermal overloads on the McNary-Roundup 230 kV line for the N-2 Oxbow North (Lolo-Oxbow and Hells Canyon-Brownlee 230 kV lines) contingency. The 2400 MW east to west rating was established in August, 1989 with the publication of Idaho Power Company to Pacific Northwest Intertie Capacity Study. The WECC Notification Procedures for Changes in Facility Ratings and/or Operating Procedures were followed. The 2400 MW east to west rating was conducted jointly by: Bonneville Power Administration (BPA) Idaho Power Company (IPC) PacifiCorp (PAC) Avista Corp. (AVA) The 1200 MW west to east rating was established in 1981 and reconfirmed in 1986. The 1200 MW west to east rating were conducted by Idaho Power Company. In 2010, Path 14 Idaho-Northwest path definition was revised due to the addition of the Hemingway 500/230 kV substation on the Midpoint-Summer Lake 500 kV line. Through the WECC Expedited Process for Path 14 redefinition, Path 14 Idaho-Northwest achieved accepted ratings of 1200 MW W-E and 2400 MW E-W. PART VI Item 1-36
Revised January 2013 System Conditions: Study Criteria: Remedial Actions Required: Formal Operating Procedure: Allocation: Interaction w/Other Transfer Paths: The 2400 MW east to west transfer rating was studied with light load conditions in Idaho with heavy eastern thermal resources, and moderate generation on the remaining hydro plants in Idaho. Studies were performed with both north to south and south to north on the PACI and near maximum transfers on parallel paths; i.e. transfers to Northwest and Arizona to California. The 1200 MW west to east transfer rating was studied with high hydro conditions in the Northwest with low to moderate eastern thermal resources. In addition, the 1200 MW west to east rating cannot be fully utilized simultaneous with heavy Hells Canyon complex generation because of steady state thermal overloads and/or post disturbance voltage change in Idaho Power’s internal transmission system. NERC/WECC Reliability Criteria For Transmission System Planning A remedial action scheme is required to achieve the 2400 MW east to west transfer capability. Outages of the Midpoint-Hemingway 500 kV and Hemingway-Summer Lake 500 kV lines requires Jim Bridger unit(s) tripping for East to West transfers. A remedial action scheme is required to achieve the 1200MW west to east transfer capability simultaneous with high Hells Canyon generation (IPC-2 Automatic Reduction of Hells Canyon Generation). Under certain generation and load conditions, 2400 MW Idaho to Northwest transfer simultaneous with heavy Northwest to California transfers may cause overloading of the Midpoint-500/345 kV transformer and/or the Midpoint and/or Burns 500 kV series Capacitors. During these conditions, one-half of the Burns (or Midpoint) series capacitor can be bypassed to reduce loading but it results in reduced Bridger West/Borah West capacity. The transfer capability of the path is allocated among the interconnections as follows: • 2400 MW East to West: 1587 MW IPC – PAC interconnection 413 MW IPC - BPA interconnection 400 MW IPC - AVA interconnection • 1200 MW West to East: 350 MW BPA - IPC interconnection 400-510 MW PAC - IPC interconnection 340-450 MW AVA - IPC interconnection For the 1200 MW west-to-east, the sum of the PAC and AVA allocation cannot be greater 850 MW (Seasonal Allocations: Spring – AVA 400 MW and PAC 450 MW, Summer – AVA 340 MW and PAC 510 MW, and Winter – AVA 450 MW and PAC 400 MW). None. PART VI Item 1-37
- Page 1 and 2: Document Title File Name Category 2
- Page 3 and 4: WECC PATH RATING CATALOG Disclaimer
- Page 5 and 6: holding rights on the path. Additio
- Page 7 and 8: EXPLANATION OF TERMS Path Name Acce
- Page 9 and 10: III-2. Palo Verde-Devers #2/ 212 II
- Page 11 and 12: WECC Transfer Paths PART VI Item 1-
- Page 13 and 14: Revised February 2005 1. Alberta -
- Page 15 and 16: Revised November 2008 Allocation: I
- Page 17 and 18: 2. Alberta - Saskatchewan Revised F
- Page 19 and 20: Revised January 2013 3. Northwest -
- Page 21 and 22: Contact Person: Guihua Wang British
- Page 23 and 24: Revised January 2013 4. West of Cas
- Page 25 and 26: Revised January 2006 5. West of Cas
- Page 27 and 28: Revised December 2011 Contact Perso
- Page 29 and 30: 6. West of Hatwai Revised December
- Page 31 and 32: 7. Deleted February 1998 INTENTIONA
- Page 33 and 34: 8. Montana to Northwest Revised Jan
- Page 35 and 36: 9. West of Broadview Revised Januar
- Page 37 and 38: 10. West of Colstrip Revised Januar
- Page 39 and 40: Revised January 2013 Interaction w/
- Page 41 and 42: 11. West of Crossover Revised Janua
- Page 43 and 44: 12. Deleted February 2002 INTENTION
- Page 45: 14. Idaho to Northwest Revised Janu
- Page 49 and 50: 15. Midway - Los Banos Revised Febr
- Page 51 and 52: Revised January 2011 Contact Person
- Page 53 and 54: 16. Idaho - Sierra Revised December
- Page 55 and 56: 17. Borah West Revised January 2013
- Page 57 and 58: Revised January 2010 Interaction w/
- Page 59 and 60: 18. Montana - Idaho Revised January
- Page 61 and 62: 19. Bridger West Revised January 20
- Page 63 and 64: Remedial Actions Required: Formal O
- Page 65 and 66: 20. Path C Revised January 2013 PAR
- Page 67 and 68: Revised January 2013 Interaction w/
- Page 69 and 70: Revised February 2005 22. Southwest
- Page 71 and 72: Revised December 2010 Allocation: I
- Page 73 and 74: Revised February 2003 23. Four Corn
- Page 75 and 76: Contact Person: Barrie Kokanos, PhD
- Page 77 and 78: 24. PG&E - Sierra Revised February
- Page 79 and 80: 25. PacifiCorp/PG&E 115 kV Intercon
- Page 81 and 82: Study Criteria (continued) Remedial
- Page 83 and 84: Revised February 2007 26. Northern
- Page 85 and 86: Revised February 2003 27. Intermoun
- Page 87 and 88: System Conditions: The Accepted Rat
- Page 89 and 90: Revised January 2013 28. Intermount
- Page 91 and 92: Revised February 2003 29. Intermoun
- Page 93 and 94: Revised November 2007 Contact Perso
- Page 95 and 96: 30. TOT 1A Revised December 2012 Ac
14. Idaho to Northwest<br />
Revised January <strong>2013</strong><br />
Accepted <strong>Rating</strong><br />
Existing <strong>Rating</strong><br />
Other<br />
Southwest Idaho and Eastern Oregon/Washington and Northern Idaho<br />
Location:<br />
Definition: Sum of the flows on the following lines:<br />
Line:<br />
Hemingway-Summer Lake 500 kV<br />
Imnaha-Lolo 230 kV<br />
Hells Canyon-Hurricane 230 kV<br />
North Powder-LaGrande 230 kV<br />
Hines-Harney 115 kV<br />
Transfer Limit: East to West: 2400 MW<br />
West to East:<br />
1200 MW<br />
Seasonal Operating Limits (SOLs):<br />
East to West: 2400 MW Winter<br />
2355 MW Spring/Summer/Fall<br />
West to East: 1200 MW<br />
Metered End<br />
Hemingway<br />
Imnaha<br />
Hurricane<br />
LaGrande<br />
Harney<br />
Critical<br />
Disturbance<br />
that limits the<br />
transfer<br />
capability:<br />
When:<br />
East to West: Thermal overload on the Walla Walla series capacitor for the<br />
N-1 loss of the Hemingway-Summer Lake 500 kV line. In the<br />
Spring/Summer/Fall, limited by the Walla Walla 1200 Ampere wave trap for<br />
the same contingency.<br />
West to East: Thermal overloads on the Imnaha-Lolo section of the Oxbow-<br />
Lolo 230 kV line and/or the Hells Canyon-Brownlee 230 kV line for the N-1<br />
loss of the Hemingway-Summer Lake 500 kV line. Thermal overloads on the<br />
McNary-Roundup 230 kV line for the N-2 Oxbow North (Lolo-Oxbow and<br />
Hells Canyon-Brownlee 230 kV lines) contingency.<br />
The 2400 MW east to west rating was established in August, 1989 with the<br />
publication of Idaho Power Company to Pacific Northwest Intertie Capacity<br />
Study. The WECC Notification Procedures for Changes in Facility <strong>Rating</strong>s<br />
and/or Operating Procedures were followed.<br />
The 2400 MW east to west rating was conducted jointly by:<br />
Bonneville Power Administration (BPA)<br />
Idaho Power Company (IPC)<br />
PacifiCorp (PAC)<br />
Avista Corp. (AVA)<br />
The 1200 MW west to east rating was established in 1981 and reconfirmed in<br />
1986. The 1200 MW west to east rating were conducted by Idaho Power<br />
Company.<br />
In 2010, <strong>Path</strong> 14 Idaho-Northwest path definition was revised due to the<br />
addition of the Hemingway 500/230 kV substation on the Midpoint-Summer<br />
Lake 500 kV line. Through the WECC Expedited Process for <strong>Path</strong> 14<br />
redefinition, <strong>Path</strong> 14 Idaho-Northwest achieved accepted ratings of 1200 MW<br />
W-E and 2400 MW E-W.<br />
PART VI Item 1-36
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