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Path Rating Catalog 2013 - Western Electricity Coordinating Council

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50. Cholla - Pinnacle Peak<br />

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

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

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

Other<br />

Location:<br />

Eastern Arizona<br />

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

Line<br />

Metered End<br />

Cholla-Preacher Canyon 345 kV<br />

Cholla<br />

Cholla-Pinnacle Peak 345 kV<br />

Cholla<br />

Transfer Limit:<br />

Critical<br />

Disturbance<br />

that limits the<br />

transfer<br />

capability:<br />

When:<br />

East to West: 1200 MW<br />

West to East: Undefined<br />

Due to rebuilding a 1.2 mile section north of the Mogollon rim in 2010, there<br />

is no critical disturbance that limits the path to its existing WECC rating.<br />

However, flows above 1200 MW are restricted due to the completion of the<br />

Morgan-Pinnacle Peak 500 kV line in 2010.<br />

The 1200 MW rating was established in the early 1980’s by the Four Corners<br />

Technical Studies Task Force and verified by 2004 System Operating Limit<br />

(SOL) studies. The task force is comprised of members from the following<br />

companies:<br />

• Arizona Public Service Company<br />

• El Paso Electric Company<br />

• Public Service Company of New Mexico<br />

• Salt River Project<br />

• Southern California Edison Company<br />

• Tucson Electric Power Company<br />

System<br />

Conditions:<br />

Study Criteria:<br />

Remedial<br />

Actions<br />

Required:<br />

Formal<br />

Operating<br />

Procedure:<br />

Allocation:<br />

Interaction<br />

w/Other<br />

Transfer <strong>Path</strong>s:<br />

Flows on this transfer path have historically been east to west due to the large<br />

amount of generation located in northwestern New Mexico and Eastern<br />

Arizona.<br />

Same as the WECC Reliability Criteria and NERC Planning Standards for<br />

Transmission System Planning.<br />

None<br />

None<br />

The transfer rating is wholly owned by Arizona Public Service.<br />

None<br />

PART VI Item 1-141

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