Path Rating Catalog 2013 - Western Electricity Coordinating Council

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40. TOT 7 Revised January 2006 Accepted Rating Existing Rating Other Location: Definition: North Central Colorado Sum of the flows on the following transmission lines: Line Metered End Ault-Fort St. Vrain 230 kV Ault Weld-Fort St. Vrain 230 kV Weld Longs Peak-Fort St. Vrain 230 kV Fort St. Vrain Transfer Limit: North to South: 890 MW (maximum) Depending on local generation and load levels, the real time limit can range between a maximum of 890 MW and a minimum of 562 MW (2005 summer study results). South to North: Not defined Critical Disturbance that limits the transfer capability: When: System Conditions: Study Criteria: Remedial Actions Required: Formal Operating Procedure: The critical disturbance is the outage of the Ault-Windsor-Fort St. Vrain 230 kV line. The limiting element is the emergency overload on the Weld- Fort St. Vrain 230 kV line or the Weld-Weld 230 kV bust tie meter CT, or the Timberline-Harmony 230 kV line. Rating established in December 1995 with publication of “Foothills Planning Group TOT 7 Operating Study Report.” The operating study was conducted jointly by: Public Service Company of Colorado (PSCO) Western Area Power Administration (WAPA) - Loveland Tri-State Generation & Transmission Association, Inc. (TSGT) Platte River Power Authority (PRPA) This rating is independent of transfer levels between major areas of WECC. This path is affected primarily by Colorado/Wyoming power exchanges, and local load and generation historically the flows have all been north to south across the path. (Summary) System intact: • Per unit voltages between 0.95 p.u. and 1.05 p.u. • All lines and transformers loaded to less than continuous rating. Single contingency outage conditions: • Per unit voltages between 0.92 p.u. and 1.10 p.u. • All lines loaded to less than 15-minute emergency ratings. • All transformers loaded to less than their continuous ratings. None required. Following an outage, re-dispatch of generation may be required to reduce loadings from acceptable short term emergency to levels within their continuous ratings. There is a formal operating procedure; the most current one dated May 23, 2005. Public Service Company of Colorado is the operating agent and uses real-time flows to monitor the path and local load and generation update the real time operating limit. PART VI Item 1-114
Revised January 2006 Allocation: Interaction w/Other Transfer Paths: Contact Person: The transfer capability of the path is divided between Public Service Company of Colorado and Platte River Power Authority. None Thomas W. Green Public Service Company of Colorado Technical Services Building 550 15 th Street, Suite 700 Denver, CO 80202-4256 (303) 571-7223 (303) 571-7877 - fax thomas.green@xcelenergy.com PART VI Item 1-115
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Document Title File Name Category 2
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WECC PATH RATING CATALOG Disclaimer
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holding rights on the path. Additio
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EXPLANATION OF TERMS Path Name Acce
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III-2. Palo Verde-Devers #2/ 212 II
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WECC Transfer Paths PART VI Item 1-
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Revised February 2005 1. Alberta -
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Revised November 2008 Allocation: I
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2. Alberta - Saskatchewan Revised F
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Revised January 2013 3. Northwest -
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Contact Person: Guihua Wang British
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Revised January 2013 4. West of Cas
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Revised January 2006 5. West of Cas
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Revised December 2011 Contact Perso
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6. West of Hatwai Revised December
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7. Deleted February 1998 INTENTIONA
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8. Montana to Northwest Revised Jan
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9. West of Broadview Revised Januar
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10. West of Colstrip Revised Januar
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Revised January 2013 Interaction w/
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11. West of Crossover Revised Janua
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12. Deleted February 2002 INTENTION
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14. Idaho to Northwest Revised Janu
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Revised January 2013 System Conditi
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15. Midway - Los Banos Revised Febr
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Revised January 2011 Contact Person
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16. Idaho - Sierra Revised December
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17. Borah West Revised January 2013
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18. Montana - Idaho Revised January
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19. Bridger West Revised January 20
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Remedial Actions Required: Formal O
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20. Path C Revised January 2013 PAR
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Revised February 2005 22. Southwest
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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
Page 97 and 98: 31. TOT 2A Revised January 2013 PAR
Page 99 and 100: Revised January 2013 Remedial Actio
Page 101 and 102: Revised February 2005 32. Pavant -
Page 103 and 104: 33. Bonanza West Revised December 2
Page 105 and 106: 34. SEE PATHS 78 AND 79 PART VI Ite
Page 107 and 108: Revised January 2013 35. TOT 2C (Pa
Page 109 and 110: 36. TOT 3 Revised January 2013 Acce
Page 111 and 112: Created on 8/10/10 TABLE 1-1A: TOT3
Page 113 and 114: 37. TOT 4A Revised January 2012 Acc
Page 115 and 116: PART VI Item 1-105
Page 117 and 118: 38. TOT 4B Revised January 2012 Acc
Page 119 and 120: WYOMING SYSTEM OPERATING CURVE SYST
Page 121 and 122: 39. TOT 5 Revised January 2013 Acce
Page 123: 40. TOT 7 Revised February 2003 PAR
Page 127 and 128: 41. Sylmar to SCE Revised February
Page 129 and 130: 42. IID - SCE Revised February 2004
Page 131 and 132: 43. North of San Onofre Revised Jan
Page 133 and 134: 44. South of San Onofre Revised Feb
Page 135 and 136: 45. SDG&E - CFE Revised December 20
Page 137 and 138: Revised February 2003 46. West of C
Page 139 and 140: Revised February 2007 Allocation: N
Page 141 and 142: Revised January 2006 47. Southern N
Page 143 and 144: Revised February 2007 48. Northern
Page 145 and 146: Revised January 2010 Allocation: In
Page 147 and 148: Revised January 2013 49. East of th
Page 149 and 150: Revised January 2013 Utah Navajo Pa
Page 151 and 152: 50. Cholla - Pinnacle Peak Revised
Page 153 and 154: 51. Southern Navajo Revised Februar
Page 155 and 156: Revised December 2010 Contact Perso
Page 157 and 158: Revised February 2003 52. Silver Pe
Page 159 and 160: 53. Deleted March 2007 INTENTIONALL
Page 161 and 162: Revised December 2010 54. Coronado-
Page 163 and 164: 55. Brownlee East Revised January 2
Page 165 and 166: 56. Deleted February 1999 INTENTION
Page 167 and 168: Revised February 2003 58. Eldorado
Page 169 and 170: Revised February 2003 59. WALC Blyt
Page 171 and 172: Revised February 2003 60. Inyo - Co
Page 173 and 174: Revised February 2003 61. Lugo - Vi
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62. Eldorado - McCullough 500 kV Li
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63. Deleted January 2011 INTENTIONA
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Revised February 1998 65. Pacific D
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Revised February 1998 Study Criteri
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66. COI Revised January 2013 PART V
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Revised January 2013 Remedial Actio
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71. South of Allston Revised Januar
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73. North of John Day Revised Decem
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Revised January 2013 75. Hemingway
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76. Alturas Project Revised Februar
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Revised February 2002 Contact Perso
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77. Crystal - Harry Allen Revised N
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78. TOT 2B1 Revised January 2013 Ac
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79. TOT 2B2 Revised January 2013 Ac
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80. Montana Southeast Revised Janua
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81. Centennial Revised November 200
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82. TotBeast Revised January 2013 P
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Revised January 2013 Formal Operati
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III-1. Devers-Palo Verde #2 Path 49
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Revised November 2007 System Condit
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Revised November 2007 III-2. Palo V
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Updated November 2007 III-3. Montan
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simultaneous analysis, only heavy s
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III-4. Path C (Post Gateway) Revise
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III-5. Aeolus South Project Added J
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Added January 2013 III-6. Aeolus We
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Added January 2013 III-7. Bridger/A
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III-9. TOT 4A (Pre-Gateway) Revised
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Contact Person: Craig Quist PacifiC
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Added January 2013 III-10. TOT 4A (
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III-11. TOT 4B (Pre-Gateway) Revise
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Operating operating agent and uses
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III-12. SunZia Southwest Transmissi
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Contact Person Mark L. Etherton, P.
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Revised January 2013 Formal Operati
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Revised January 2013 Allocation: In
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January 2013 III-15. TotBeast with
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January 2013 III-16. Idaho to North
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January 2013 Study Criteria: Remedi
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Revised January 2013 III-17. TOT3 A
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Remedial Actions Required: Formal O
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Phase II Projects PART VI Item 1-25
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Revised December 2010 II-1. Navajo
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Added January 2010 II-3. TransWest
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II-5. Path 45 Uprate Project Revise
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Contact Person: Ing. Jesús Moya Je
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Added February 2010 II-6. Southwest
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Intertie, Normally Close) Interacti
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II-8. IID - SCE March 2013 Accepted
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II-9. IID - SCE March 2013 Accepted
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