April 16, 2010
Regional Planning Group
RMR Exit for Spencer 5 – Remedial Action Plans
Chris NgaiJay Teixeira
2
Summary
ERCOT staff analysis of the Spencer 5 exit from RMR status indicated that the Remedial Action Plans (RAPs) described herein would facilitate the unit’s RMR exit. Slide 3 contains a list of the six RAPs proposed as an RMR exit strategy for Spencer 5 with detailed descriptions of the RAPs in the subsequent slides.
Review of the RAPs submitted by Oncor on April 14 is currently in progress. RAPs were revised to take into account current construction activity.
This analysis was performed using the 2010 summer peak case; last updated on December 11, 2009.
3
List of RAPs
RAPDescription
Contingency/Overload pair Est. Hours/yr*
1 Carrollton RAP
L: Lewisville Switch (645)-Highland E 138kV(1970) lineC: Lewisville Switch (645)-Highland(664)
613
L: Lewisville Switch (645)-Highland E 138kV(1970) lineC: Highland (664) - Canyon (668)
7
2Lake Pointe
RAPL: Carrollton Northwest-LakePointe 138kV lineC: Lewisville Switch 345/138kV autotransformer
208**
3 Highland RAPL: Lewisville Switch (645)-Highland E 138kV(1970)
138kV lineC: Coppell-Lewisville Switch
10
4 Frisco RAPL: Collins (2370) to Frisco (681) 138kV lineC: Denton Steam – Corinth; Teasley to Pockrus
278
5Frisco Voltage RAP
L: Low voltage at Frisco and Panther CreekC: Collin to Frisco 138kV line
90
6 Arco RAPL: Collins (2370) to Frisco (681) 138kV lineAfter Operation of Carrollton RAP or Lake Pointe RAP
See above
*based on SSWG load level and one unit unavailable**138 kV line from NW Carrollton to Lewisville still in service through summer this RAP not needed
4
RAP 1 – Carrollton RAP
• Problem 1– Contingent element: Lewisville Switch (645)-Highland(664)– Overload element: Lewisville Switch (645)-Highland E
138kV(1970) line (Rate A/B/C: 214/214/214)– RAP operation: Open NW Carrollton (2361) – Lewisville Switch
(646) 345kV and 138 kV lines– Level of overload: 117.8% Rate B (252.1MVA)– Estimated number of hours RAP would operate in year 2010:
613 hours
5
RAP 1 – Carrollton RAP cont’d 613 hours
ROANOKE2
ALLIANCE
CRLTN_NWELMFK1T_
ELMFKN1_
NLKPMP1T
ELMFK1_8
ADSN1_8
CRLTN_NW
ELMFK2T_
CRLTNTAR
ELMFKN2_
ELMFK2_8MCKAMY_T
MCKAMYRD
COPPELL_
MCKAMY
COPPELL
GRAPEVIN
MOUND
IBM
LEWISVIL
ROANOKE1
LEWISVLS
KELLER
STHLAKE1
WROANOKE
KLR_MAG1
KLR_MAG2
HEBRN_P8
ROANOKE
CRLTNFRK
CRLTN_NW
HEBRON
CRLTN_NW
HIGHLAND
LEW_JNS_
CRLTNRMD
CRLTNJSY
TNLWVLST
TNLWVLTI
TNLAKEPN
TNLWVLWE
FLWRMND_
TNHIGHLA
CANYON
TNJONES_
ADSN1T_8
HIGHL_E_
MCPHERSN
MCPHERSO
1853
1855
2361
2586
2580
2590
2569
2362
2587
2558
2581
25892025
2024
2015
658
648
555
656
556
660
1854
645
565
2020
2018
2034
2376
640
2519
2360
663
2363
664
1972
2562
2555
37100
37080
37010
37060
2030
37050
668
37030
2576
1970
1857
679
CROSTIMB661
TNBIOENR37011
LEWISVLS
646AUSRNCH2
2377
FLWRMNDS2031
KIMBALRO657
ROANOKE3
ROANOKE1
ROANOKE1 ROANOKE2
ROANOKE1
ROANOKE2
ROANOKE2
HERITAGE
HRTAG1_T HRTAG2_T
KEL_MAG2
KELLER1T
KELLER2_
PL_COMM12568
1983
ELIZCRK11866
1852
1850
1851 1849
1845
1847
1848
113 MW 41 Mvar
94 MW 30 Mvar
107 MW 35 Mvar
51 MW 14 Mvar
21 MW 8 Mvar
60 MW 18 Mvar
49 MW 14 Mvar
32 MW 20 Mvar
7 Mvar
15.3 Mvar
98.7 Mvar
15.3 Mvar
15.0 Mvar
36.0 Mvar
108 Mvar
4.9 Mvar
57.1 Mvar
0.0 Mvar 56.6 Mvar
27.9 Mvar
14 Mvar
6%B
Amps
23%B
Amps
29%B
Amps
6%B
Amps
5%B
Amps
AVONDALE
14 MW 4 Mvar
10 MW 2 Mvar
602
24%B
Amps
1%B
Amps
1730 Contingency:
Lewisville Switch (645) to Highland E (1970) 138kV line
Overload element: Lewisville Switch (645) to Highland (664) 138kV line
RAP action:Open the NW Carrollton (2361) – Lewisville Switch (646) 345kV line
Denton
NW Carrollton
Roanoke
6
RAP 1 – Carrollton RAP cont’d
• Problem 2– Contingent element: Highland (664) - Canyon (668)– Oveload element: Lewisville Switch (645)-Highland E
138kV(1970) line (Rate A/B/C: 214/214/214)– RAP operation: Open the NW Carrollton (2361) – Lewisville
Switch (646) 345kV and 138 kV lines– Level of overload: 101.9% Rate B (218.1MVA)– Estimated number of hours RAP would operate in year 2010: 7
hours
7
RAP 1 – Carrollton RAP cont’d 7 hours
PL_TENNY
ROANOKE2
ALLIANCE
CRLTN_NWELMFK1T_
ELMFKN1_
NLKPMP1T
ELMFK1_8
ADSN1_8
CRLTN_NW
ELMFK2T_
CRLTNTAR
ELMFKN2_
ELMFK2_8MCKAMY_T
MCKAMYRD
COPPELL_
MCKAMY
COPPELL
GRAPEVIN
MOUND
IBM
LEWISVIL
ROANOKE1
LEWISVLS
KELLER
STHLAKE1
WROANOKE
EMCS1_8
KLR_MAG1
KLR_MAG2
HEBRN_P8
ROANOKE
CRLTNFRK
CRLTN_NW
HEBRON
CRLTN_NW
HIGHLAND
LEW_JNS_
CRLTNTAR
CRLTNRMD
CRLTNJSY
TNLWVLST
TNLWVLTI
TNLAKEPN
TNLWVLWE
FLWRMND_
TNHIGHLA
CANYON
TNJONES_
ADSN1T_8
ADSN2T_8
HIGHL_E_
MCPHERSN
MCPHERSO
1853
1855
2361
2586
2580
2590
2588
2569
2362
2587
2558
2581
25892025
2024
2015
658
648
555
656
556
660
1854
645
565
2020
2018
2065
2033
2034
2376
640
2519
2360
663
2363
664
1972
2559
2562
2555
37100
37080
37010
37060
2030
37050
668
37030
2576
2577
1970
1857
679
CROSTIMB661
TNBIOENR37011
LEWISVLS
646AUSRNCH2
2377
AUSRNCH12378
FLWRMNDS2031
KIMBALRO657
ROANOKE3
ROANOKE1
ROANOKE1 ROANOKE2
ROANOKE1
ROANOKE2
ROANOKE2
CRLTNCC1
HERITAGE
HRTAG1_T HRTAG2_T
KEL_MAG2
KELLER1T
KELLER2_
PL_COMM12568
PL_COMM22570
CORINTHS1983
ELIZCRK11866
1852
1850
1851 1849
1845
1847
1848
EGLMTLAK12065
113 MW 41 Mvar
94 MW 30 Mvar
107 MW 35 Mvar
74 MW 19 Mvar
51 MW 14 Mvar
21 MW 8 Mvar
60 MW 18 Mvar
49 MW 14 Mvar
32 MW 20 Mvar
60 MW 18 Mvar
7 Mvar
15.4 Mvar
98.6 Mvar
15.2 Mvar
15.3 Mvar
36.0 Mvar
108 Mvar
4.9 Mvar
57.1 Mvar
0.0 Mvar 56.6 Mvar
14.7 Mvar 14.7 Mvar
27.9 Mvar
14 Mvar 10 Mvar
6%B
Amps
23%B
Amps
29%B
Amps
6%B
Amps
6%B
Amps
AVONDALE
80 MW 20 Mvar
14 MW 4 Mvar
10 MW 2 Mvar
602
24%B
Amps
KRUMW_5
1%B
Amps
1730
37%B
Amps
37%B
Amps
58%B
Amps
Contingency:
Highland (664) to Canyon (668) 138kV line
Overload element:Lewisville Switch (645) to Highland E (1970) 138kV line
RAP action:Open the NW Carrollton (2361) – Lewisville Switch (646) 345kV line
NW Carrollton
Roanoke
Denton
8
RAP 2 – Lake Pointe RAP
– Contingent element: Lewisville Switch (645)-Highland(664)– Overload element: Lewisville Switch 345/138kV autotransformer
(Rate A/B/C: 700/700/700)– RAP operation: Open the line TNMP Lake Pointe (37010) –
TNMP Lewisville (37080)– Level of overload: 113.3% Rate B (317.3MVA)– Estimated number of hours RAP would operate in year 2010:
208 hours– Not needed in 2010 summer due to 138 kV line from Lewisville
to NW Carrollton line being in case• May activate Arco RAP to handle Double Circuit contingency
• Causes Collin to Frisco to overload
9
RAP 2 – Lake Pointe RAP cont’d 208 hours
MCKAMYRD
MCKAMY
MOUND
LEWISVIL
LEWISVLS
WROANOKE
CRLTNFRK
LEW_JNS_
TNLWVLST
TNLWVLTI
TNLAKEPN
TNLWVLWE
FLWRMND_
TNJONES_
HIGHL_E_
2024
658
656
660
645
2018
2519
1972
37100
37080
37010
37060
2030
37030
1970
CROSTIMB
TNBIOENR37011
LEWISVLS
646
FLWRMNDS2031
ROANOKE2
51 MW 14 Mvar
96.9 Mvar
8%B
Amps
8%B
Amps
1%B
Amps
Contingency:Lewisville Switch 345/138kV autotransformer
Overload element:Carrollton Northwest – Lake Pointe 138kV line
RAP action:Open the line TNMP Lake Pointe (37010) – TNMP Lewisville (37080)
Denton
NW Carrollton
10
RAP 3 - Highland RAP
– Contingent element: Coppell-Lewisville Switch – Overload element: Lewisville Switch (645)-Highland E
138kV(1970) 138kV line (Rate A/B/C: 214/214/214)– RAP operation: Open Lewisville Highlands (37050) – Lewisville
West (37060)– Level of overload: 101.8% Rate B (217.8MVA)– Estimated number of hours RAP would operate in year 2010: 10
hours– Coppell to Lewisville Switch contingency sectionalized to
Lewisville Switch to Lewisville.• Overload element: Coppell Tap to McKamy Tap
• May not related to Spencer RMR
11
RAP 3 - Highland RAP cont’d 10 hours
Denton
LEWISVIL
LEWISVLS
HIGHLAND
LEW_JNS_
TNLWVLST
TNLWVLWE
FLWRMND_
TNHIGHLA
ARGYLE1_
CANYON
TNJONES_
HIGHL_E_
INDSTRL1
660
645
664
1972
37100
37060
2030
37050
1984
668
37030
1970
913
LEWISVLS
646
CORINTHS1983
ELIZCRK11866
100.3 Mvar
15.7 Mvar
54.2 Mvar
8%B
Amps
2%B
Amps
KRUMW_5
1%B
Amps
1730
Contingency:Coppell to Lewisville Switch 138kV line
Overload element:Lewisville Switch (645) - Highland E (1970) 138kV line
RAP action:Open Lewisville Highlands (37050) – Lewisville West (37060)
NW Carrollton
12
RAP 4 – Frisco RAP
– Contingent element: Denton Steam – Corinth & Teasley - Pockrus
– Overload element: Collins (2370) to Frisco (681) 138kV line (Rate A/B/C: 256/256/256)
– RAP operation: • Raise the voltage of the West Denton 138kV side to 140kV
• Modify the Collin Switch Reactor SPS so that it will operate when the Collin to Frisco line overloads.
• If this does not resolve the overload, put all three capacitor banks at Navo in-service
• Verify Argyle and Corinth capacitors are on
– Level of overload: 109% Rate B (276.9MVA)– Estimated number of hours RAP would operate in year 2010:
278 hours
13
RAP 4 – Frisco RAP cont’d 278 hours
PL_TENNY
COLLINSS
BRIDGES_
FRISCO
CUSTER
BRIDGES
COLONY_8
HEBRN_P8
LEBNON_P
LEBANON
MCDERMT_
PL_CUSTRPL_CUSTR
2522
2517
681
655
659
2518
2376
2515
651
2516
2526
COLLINSS2372
COLLIN_1
NAVO662
AUSRNCH22377
AUSRNCH12378
COLLIN1_2364
ROLATER22368
0 MW 0 Mvar
PNTHRCRE649
2370
2349
PL_COMM12568
PL_COMM22570
CUSTER1_2566
CUSTER2_2567
ROMJUARZ2688
ROMANJUA629
2371
ROCKHILL675
CUSTER2653
116 MW
37 Mvar
74 MW 19 Mvar
71 MW
62 MW 20 Mvar
12.1 Mvar
226.3 Mvar
29.7 Mvar
6%B
Amps
32%B
Amps
37%B
Amps
37%B
Amps
58%B
Amps
N_DENT_8
DN_STEAM
JMCRSTL1
TEASLEY1
POCKRUS1
N_DENT69
ARGYLE1_
CORINTH1
SPNCR_SW
KRUM_P8
LAKEDALL
KINGSROW
HICKORY6
LOCUST69
NLAKES69
WOODROW6
985
982
916
912
1984
1985
908
1990
671
909
910
914
915
901
670KRUM
1986KRUM_T8
CORINTHS1983
SPNCRINT
POLESPL2904
FTWORTH1919
918
917
RDWELLS6932
RDWELLS1930
981
N_DENT_T959
W_DENT_T984
BONBRAE6905
DN_STSTR1001
N_DENSTR1009
W_DENSTR1011
W_DENSTR
1012
W_DENT_T
972
80.7 MW
23.5 Mvar 7 Mvar
53.9 Mvar
9.5 Mvar
KRUMW_51730
8%B
Amps
Contingency:Denton Steam auto-transformer to Corinth &Teasley to Pockrus 138kV line
Overload element:Collins (2370) to Frisco (681) 138kV line
RAP action:Raise the voltage of the West Denton 138kV side to 140kV
RAP action:Collin Switch Reactor SPS operates when the Collin to Frisco line overloads
RAP action:put all three capacitor banks at Navo in-service
CollinNorth Denton
Spencer
14
RAP 5 - Frisco Voltage RAP
– Contingent element: Collin to Frisco 138kV line – Low voltage element: Frisco and Panther Creek bus– RAP operation:
• Raise voltage at West Denton to 1.02~1.05
• adjust power factor/load
– Level of overload: 0.8942 p.u.– Estimated number of hours RAP would operate in year 2010:
• <0.92 p.u. – 584 hours (Brazos Criteria)
• <0.90 p.u. – 90 hours (ERCOT Criteria)
15
RAP 6 – Arco RAP
• Cause
– Carrollton RAP– Lake Pointe RAP
• Overload element: Collin (2370) to Frisco (681) 138kV line (Rate A/B/C: 256/256/256)
• RAP operation: Open Arco (1993) – Krugerville (1994)138kV line• Level of overload:
– Carrollton RAP (line loadings refer to Collin to Frisco)• Problem 1 - 115.4% (239.4 MVA) after Carrollton RAP [pre RAP:
104.1% 266.4 MVA Collins SPS would relieve this but not after Carrollton RAP so should use Arco RAP instead]]
• Problem 2 – 113.8% (291.4 MVA) after Carrollton RAP [pre RAP: 102.3% 262.0 MVA Collins SPS would relieve this but not after Carrollton RAP so should use Arco RAP instead]]
– Lake Pointe RAP - 111.2% (284.6 MVA) after Lake Pointe RAP [pre RAP: 110.6% 283 MVA]
16
RAP 6 – Arco RAP cont’d Same # of hours as Carrollton RAP & Highland RAP
COLLINSS
BRIDGES_
FRISCO
CUSTER
BRIDGES
KRUGRVL1
ARCO1_8
ARCO_T_8
DENARCO1
2517
681
655
659
1994
1993
983
911
NAVO662
PNTHRCRE649
2370
CUSTER1_2566
CUSTER2_2567
ROMJUARZ2688
ROMANJUA629
CUSTER2
12.2 Mvar
226.3 Mvar
Overload element:Collins (2370) to Frisco (681) 138kV line
Contingency:overload caused by Carrollton RAP and Lake Pointe RAP
RAP action:Open Arco (1993) – Krugerville (1994)138kV line Collin
Krugerville
Arco
Navo
Panther Creek
17
Permanent RMR Exit Solutions
ProjectTPIT
Estimated Completion
Date
1 RD Wells to Hickory 69kV (Denton)06TPIT0198(tier 4)
June 2010
2Upgrade Lewisville Switch to Highland (TNMP) 138 kV line to 290MVA or above
07TPIT0018(tier 4)
May 2015
3Add second 345/138kV autotransformer at Lewisville switching substation
07TPIT0042(tier 3)
June 2011
4 Upgrade Collin to Frisco 138kV line to 326MVA08TPIT0068(tier 4)
June 2013
5Upgrade West Denton to Jim Christal to North Denton138kV line to 250 MVA or above
Per E. Schroeder (TMPA) email dated 3/10/2010
Summer 2012
6Additional capacitor banks at Navo and Panther Creek Substations (interim for Mustang capacitor bank)
2011
7New Mustang Substation and capacitor bank
10TPIT0083(tier 4)
June 2013
8 Upgrade Arco to Krugerville 138kV10TPIT0032(tier 4)
May 2011
Questions?