20180216Vail Exhibit 48.pdf

Case No.PAC-E-17-07
Exhibit No.48
Witness:Rick A.Vail
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
ROCKY MOUNTAIN POWER
Exhibit Accompanying Second Supplemental Direct Testimony of Rick A.Vail
Interconnection Network Upgrades
February 2018
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Rocky Mountain Power
Exhibit No.48 Page 1 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
February9,2018_V4
At the Aeolus Substation,to support the Ekola Flats Wind project the following network upgrades area
required.
One (1)230 kV 3000 ampere breakerand line position with associated switches at Aeolus
substation
230kV#1to
Shirley BasinAeolus500kV50Qf230kV#1
230kV
Energy Vision 2020
Scope of Work
Aeolus 230 kV
Substation
230 kV to
Freezeout
"7 miles
230 kV to
00706
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Rocky Mountain Power
Exhibit No.48 Page 2 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
At the Shirley Basin Substation,to support the inclusion of TB Flats I wind project the following network
upgrades are required:
A new bay,five (5)new 3000 ampere 230 kV breakers,two line terminations with associated
switches
Constructionof a new approximately 16.5-mileShirley Basin -Aeolus 230 kV #2 line
At the Aeolus substationthe following network improvements are required:
Addition of one (1)new 230 kV breaker,line termination and associated switches
Inclusion of the project in the Aeolus RAS generation dropping scheme
34 5 kV6Mues84/112/140MVAChanged230-34.5kVOwnersMpZ=9 %
84/112/140MVA -
terconn 230-34.5kV
Shirley Basiri T Tc>ySubstation
QO707Substation
O 230kV
Dunlap
Energy Vision 2020
Scope of Work:
New Aeolus -Shirley
Basin #2 230 kV line
16 5 Mues
AeolusSubstation
se a -00706
,230 kV
O Tranf.Freezeout
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Rocky Mountain Power
Exhibit No.48 Page 3 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
At the Shirley Basin Substation,to support the inclusion of TB Flats II wind project the following network
upgrades are required:
Expansion of the Shirley Basin 230 kV switchyard on the east side of the substation with a new
bay.
Two (2)230 kV 3000 ampere breakers,line termination and associated switches
Inclusion of the project in the Aeolus RAS generation droppingscheme
Difficulty QO707
Shirley Basin Energy Vision 2020
Substation Scope of Work
Point ofInterconnection
230 kV L
Dunlap hange ofOwnership
230kV
QO708Substation
16.5 Mil 84/112/140MVA '84/112/140MVA230-34 5kV VG V 230-34.5kVZ=9%e .f1 Z=9%
34.5kV 34 SkV
corrector amts collector circuit.
AeolusSubstation
500 -Q0706230kVTranf.Freezeout
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Rocky Mountain Power
Exhibit No.48 Page 4 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
At Windstar substation,to support the inclusion of Cedar Springs I wind project the following network
upgrades are required:
Two (2)230 kV 3000 ampere breakers and two line terminations with associated switches
At Freezeout substation to support the inclusion of the Cedar Springs I wind project the following
network upgradesare required:
Add one new bay and four (4)230 kV (3000 ampere)breakers along with associated switches
(staged in two bays)for re-termination of lines associated with the Aeolus -Freezeout-Standpipe
230 kV line rebuild.
Rebuild the Aeolus -Freezeout -Standpipe 230 kV line ~15 miles
Rebuild the Shirley Basin -Aeolus 230 kV #1line ~16 miles
Windstar Substation
Energy Vision 2020 Scope of Work:
Pointsof Rebuild Aeolus -Freezeout -Standpipe
230kV intercon 230 kV line ~15 miles
Rebuild Aeolus -Shirley Basin #l 230 kV
line ~16 miles
Q0712 A Collector--Change of Ownership[l Substation
4 Mlles
Q0712 B Collector
Substation 34 5kV
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Rocky Mountain Power
Exhibit No.48 Page 5 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
Freezeout Substation
Existing 230 kV Rebuild and Re
line to Aeo us terminale 230 kV
230 kV Line in line to Aeolus
Seven Mile Hill
Substation
r-·----·----·
\
\
\
I
I
I
I
i
I
I
1 F Substation
Rebuild and Re-
E tmge230 Spansion
terminate 230 kV Standpipe
ne to Standpipe
Energy Vision 2020
Scope of Work
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Rocky Mountain Power
Exhibit No.48 Page 6 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
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To support the addition of the Uinta wind project the following system improvementsare required.
Construct a new three (3)breaker230 kV ring bus
Inclusion of the project into NaughtonRAS
Whitney
Canyon
i Canyon Compression
Q0715 POl
Substation
nt
n°i Energy Vision 2020
Scope of Work
38 kV
Railroad
Change of
Ownership 6 Miles
34.5 kV
84/112/140 MVA
138 -34.5 kV
34.5 kVQ0715
Substation
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Rocky Mountain Power
Exhibit No.48 Page 7 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
To support the addition of the Uinta II wind project the following system improvementsare required.
Construct a 230 kV single circuit transmission line beginningapproximately one mile
outside of the Ben Lomond substationto replace the Ben Lomond -Naughton230 kV #1
circuit which resides on the north side of the 7-mile long lattice tower double circuit
with the Ben Lomond -Birch Creek 230 kV line
Energy Vision 2020
Scope of Work
Ben Lomond
230 kV
New230 kV(2-795ACSR)
230038 ~7 Miles
De-energizeoneexistingcircuit Naughton
230/138
O Reconductor2.35 miles of 795 ACSR 138 kV line between Railroad and Croydon with
1222 ACCC high temperature conductor.The portion of the line to reconductor is on
one side of a double-circuit tower.
Railroad 138 kV
230/138
Energy Vision 2020
Scope of Work
Reconductor 2.35 Miles
Croydon I with 1222 Accc
Railroad Tap Painter
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Rocky Mountain Power
Exhibit No.48 Page 8 of 8
Case No.PAC-E-17-07
Witness:Rick A.Vail
D.2 Project Facilities:
D.2 Project TransmissionFacilities:
Addition of the Aeolus 500/230 kV autotransformer
Addition of the Aeolus -Anticline 500 kV line (~138 miles)
Addition of the Anticline 500/345 kV autotransformer
Addition of the Anticline -Bridger345 kV line (5 miles)
SoutheastWyoming -Network Upgrades
Loop the Shirley Basin -Freezeout 230 kV line into Aeolus 230 kV
Add the Aeolus -Shirley Basin 230 kV #2 line (~16 miles)[QO707]
Rebuild the Aeolus -Shirley Basin 230 kV #1 line (~16 miles)[Q0712]
Rebuild the Aeolus -Freezeout -Standpipe 230 kV line (~15 miles)[Q0712]
Add Latham SVC
A drawing depicting all new D.2 Project network transmission facilities east of Jim Bridger Power Plant is
provided below:
GianrocW Honny His 110 5MWes
GatewayWest-Sub600mentD 2WyomingLineConfiOuration
kunu
Rool creek so ww
Difficulty
on,.ShirleyBasin
Mustang /Dunlap111 MW
Aeolus(Future)
Standp Freezeout 7 Mile Hil 118.5MW
Platte
Sn s Bridger 'q Anticline Echo Latham ,-----
_unesprings,--135 MWL----
,,-'
FooteCreekPointofBitler
Rock Creek Bar X <230kV Existing
Existing Wind Gen 230kV Existing High Plains 99 MW----230kV Future McFaddenRidge 28.5 MWProposedWindGen345kVExisting
----345kV Future----500 kVFuture
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