2014 RTP
July 22, 2014
ERCOT PUBLIC
5/20/2014
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Outline
Updates to 2014 RTP
RTP Next steps
ERCOT PUBLIC
5/20/2014
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2014 RTP update
N-1 SCOPF reliability analysis is complete
N-1 secure case and list of placeholder projects
are posted for review
Currently working on Generator and
Transformer outage (G-1+N-1 and X-1+N-1)
reliability analysis
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Transmission equipment upgrades based on N-1 SCOPF
Upgrade needs
identified by kV
69
138
345
2014 RTP
Previously
Identified*
Line Addition
1
6
2
9
5
Line Upgrade
11
21
-
32
17
Transformer
Addition
-
3
4
7
7
Transformer
upgrade
-
5
-
5
4
Terminal
equipment
upgrade
-
6
-
6
4
* Projects identified in previous RTP or the 2013 west Texas study which were needed in 2014 RTP
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Project Description
2014 RTP
N-1 Projects
1) Firewheel - Wylie Switch 138-kV line upgrade
2)
Northwest Carrollton - Lake Pointe 138-kV line
upgrade
3) Dickinson - League City 138-kV line upgrade
4) South Shore - Hidden Lakes 138-kV line upgrade
5)
Loop Roans Prairie - King 345-kV line into
Rothwood
6) Switched shunt at Stewart
7) Switched shunt at PH Robinson
8)
Arena Tap - Andrew County South 138-kV line
upgrade
9) Big Lake - Stiles new 138-kV line
Flat Top TNP - Barilla Tap 138-kV tie
1. Tap existing Barilla - Musquiz138-kV line
10) 2. New 138-kV line from the tap to Flat Top
3. New 138/69-kV transformer at Flat Top TNP
4. Upgrade Barilla Draw Tap TNP - Flat Top TNP
345-kV new project additions
138-kV new project additions
138-kV project upgrades
69-kV projects and terminal
equipment upgrade projects not
shown
ERCOT PUBLIC
5/20/2014
*Projects identified in previous
RTP/West Texas Study
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Project Description
2014 RTP
N-1 Projects
McDonald - Spraberry 138-kV line
1. Upgrade McDonald Road 138-kV switching
station
2. Install McDonald Road Sw Station - Garden
City East 138-kV line on new double circuit
11)
structures and operate both 69 kV and 138 kV
3. Upgrade Spraberry 138-kV Switching Station
4. Install Spraberry Switching Station - Garden
City East 138-kV line on new double circuit
structures and operate both 69 kV and 138 kV
12) Midland East - Stanton East 138-kV line upgrade
13)
(a) Mason - Sand Bend POI 138-kV line upgrade
(b) Mason - Culberson 138-kV line upgrade
(a) Add a new 345/138-kV autotransformer at
Twin Buttes
14)
(b) Upgrade San Angelo Red Creek - San Angelo
Coke Street 138-kV line
15)
Ferguson - Sandy Creek - Pittsburg 138-kV line
upgrade
16) Dermott - Ennis Creek 138-kV line upgrade
17) Morgan Creek - Cosden 138-kV line upgrade
Northeast Switchyard project with new auto at
18) Highway 46 and tie to LCRA terminating at Clear
Springs
19)
Hutto Switch - Round Rock Northeast - Round
Rock 138-kV line upgrade
ERCOT PUBLIC
5/20/2014
345-kV new project additions
138-kV new project additions
138-kV project upgrades
69-kV projects and terminal
equipment upgrade projects not
shown
*Projects identified in previous
RTP/West Texas Study
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Project Description
2014 RTP
N-1 Projects
Tap the 138-kV LCRA line between Shiner and
20) Moulton and add a 69/138-kV auto at the GVEC
Moulton substation
21) Zorn - York - Seguin 138-kV line upgrade
22)
Lockhart auto and Lockhart - Seawillow - Luling
138-kV line upgrade
23) Marion - Cibolo second circuit addition
24) Pearsall - Paloduro 138-kV line upgrade
25) Fowlerton 345/138-kV auto addition
26)
Lobo 345/138-kV auto addition and close San
Diego tie between AEP and STEC
27) Cross Valley Project tap at South McAllen
28)
Build 138-kV line between Escondido and West
Batesville
29) Stewart Road - Weslaco Unit 138-kV line upgrade
30) Escondido - Eagle Pass 138-kV line upgrade
31) Bethel 138/69-kV autotransformer upgrade
32) Olsen 138/69-kV autotransformer upgrade
33) George West 138/69-kV auto upgrade*
34) Pleasanton 138/69-kV transformer upgrade*
345-kV new project additions
138-kV new project additions
138-kV project upgrades
Stewart 138/69-kV transformer upgrade, Stewart 69-kV projects and terminal
35) Rio Rico and La Palma - Rangerville 69-kV line
equipment upgrade projects not
upgrades
shown
ERCOT PUBLIC
5/20/2014
*Projects identified in previous
RTP/West Texas Study
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Next steps
Case conditioning
Reliability analysis
complete with all
reliability issues resolved
Economic case
preparation
Initial start cases,
contingency list and list
of overloads ready
X-1 screening followed by
X-1+N-1 analysis
Economic analysis
N-1 SCOPF analysis
G-1 screening followed
by G-1+N-1 analysis
Prepare the final RTP
report
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5/20/2014
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