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Path Rating Catalog 2013 - Western Electricity Coordinating Council

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9. West of Broadview<br />

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

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

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

Other<br />

Location:<br />

Definition:<br />

Transfer Limit:<br />

Critical<br />

Disturbance<br />

that limits the<br />

transfer<br />

capability:<br />

When:<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 />

Contact Person:<br />

Central Montana<br />

The West of Broadview path consists of the following transmission lines:<br />

Line<br />

Metered End<br />

Broadview-Garrison 500 kV #1 & #2 Broadview<br />

Broadview-Judith Gap South 230 kV Broadview<br />

Shorey Road-Wilsall 230 kV<br />

Shorey Road<br />

Columbus/Rapleje-Big Timber 161 kV Columbus/Rapelje<br />

Broadview 2-230/100 kV auto transformers Broadview<br />

This path includes all lines which proceed west from the Billings area.<br />

East to West: 2573 MW<br />

Since the flow on this path is almost always east to west, and is never large<br />

when it is west to east, no effort has been made to determine the west to east<br />

capacity.<br />

The capacity rating is based on the maximum flow for which a two-phaseground<br />

fault at the Broadview end of a Broadview-Garrison line when cleared<br />

normally will result in a worst case voltage dip after the fault has cleared no<br />

more than 20% of the starting voltage on any load bus with no generator<br />

tripping at Colstrip.<br />

This capacity rating is based on studies done in 1980 for the Colstrip<br />

participants.<br />

None<br />

None<br />

Eric Bahr<br />

North<strong>Western</strong> Energy<br />

40 East Broadway<br />

Butte, MT 59701<br />

(406) 497-3394<br />

(406) 497-3002 - fax<br />

Eric.Bahr@northwestern.com<br />

PART VI Item 1-26

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