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Path Rating Catalog 2013 - Western Electricity Coordinating Council

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Revised January <strong>2013</strong><br />

49. East of the Colorado River (EOR)<br />

Accepted <strong>Rating</strong><br />

Existing <strong>Rating</strong><br />

Other<br />

Location:<br />

<strong>Western</strong> Arizona<br />

Definition: Sum of the flows on the following transmission lines (see Fig 1):<br />

Line<br />

Metering Point<br />

Navajo-Crystal 500 kV<br />

Navajo 500 kV<br />

Moenkopi-Eldorado 500 kV<br />

Eldorado 500 kV<br />

Liberty-Peacock-Mead 345 kV<br />

Liberty 345 kV<br />

Palo Verde-Devers 500 kV<br />

Palo Verde 500 kV<br />

Hoodoo Wash – N.Gila 500 kV<br />

Hoodoo Wash 500 kV<br />

Perkins-Mead 500 kV<br />

Perkins 500 kV<br />

Transfer Limit: East to West: 9300 MW<br />

West to East: Not rated<br />

Critical<br />

Disturbance<br />

that limits the<br />

transfer<br />

capability:<br />

When:<br />

The critical disturbance is loss of the Navajo-Crystal 500 kV line which<br />

causes the Moenkopi-Eldorado 500 kV line to reach the emergency rating of<br />

its series capacitors.<br />

The non-simultaneous transfer capability was established in 2005 by Joint<br />

WECC Peer Review Group (PRG) and <strong>Western</strong> Arizona Transmission<br />

System (WATS) task force. The PRG and WATS task force were comprised<br />

of members from the following companies:<br />

Arizona Public Service Company<br />

El Paso Electric Company<br />

DOE-<strong>Western</strong> Area Power Administration<br />

Imperial Irrigation District<br />

Los Angeles Department of Water and Power<br />

Nevada Power Company (d/b/a NV Energy)<br />

Public Service Company of New Mexico<br />

Salt River Project<br />

San Diego Gas and Electric Company<br />

Southern California Edison Company<br />

Southern California Public Power Authority<br />

Tucson Electric Power Company<br />

For more details regarding the results of the analysis by the listed PRG and<br />

WATS members, please refer to the following report EOR 9000+ Upgrade<br />

Project (EOR 9000+) Accepted <strong>Path</strong> 49 <strong>Rating</strong> Study Report dated August<br />

10, 2005.<br />

PART VI Item 1-137

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