Longterm_Critical_outages

Alberta Electric System Operator
Long Range Significant Transmission Outages for the period of 24 months starting 2018-08-18

The table below contains the significant transmission outages submitted as tentative to the AESO.
These Outages have not yet necessarily been approved, but are listed for awareness and coordination purposes.
An Outage has been considered significant for this table if it meets any one (1) or more of the following criteria:
  1. it affects a transmission facility operating at two hundred and forty (240) kV or greater;
  2. it affects an intertie;
  3. it affects an element connecting facilities owned by two (2) or more different legal owners of transmission facilities;
  4. it affects an element that connects a generating unit or an aggregated generating facility to the interconnected electric system;
  5. it requires the ISO to issue a dispatch or directive for generation in order to facilitate the planned outage;
  6. it affects a cutplane limit;
  7. it limits or reduces the operability of a synchronous condenser, static VAr compensator, static compensator or other similar dynamic device; or
  8. it affects high voltage direct current facilities.
Note: Where a transmission outage requires generation curtailments, the adjustments to generation will typically happen in the hours before the scheduled transmission outage and in the hour after the element is returned to service.

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Owner From To Duration Element Scheduled Activity Affected Intertie
ALTALINK 09-May-18 11:30 28-Feb-19 17:00 295.27 Days
Continuous
902L (19s Wabamun - 310p Sundance) emergency safety requirement  
SUNCOR 30-Jul-18 09:00 19-Aug-18 18:00 20.38 Days
Continuous
29PL9-14 (29EDD-56 - 29EDD-34),29EDD-34 Edd34Sub 5 year maintenance on breakers, bus CT and switches  
ALTALINK 08-Aug-18 07:00 31-Aug-18 13:00 23.25 Days
Continuous
768L (217s North Red Deer - 209s Timberlands),778L (217s North Red Deer - 87s Gaetz) install OPGW and salvage existing o/h wire on structure tops (str12-217s)  
BCH 12-Aug-18 09:00 16-Oct-18 17:00 65.33 Days
Continuous
5L71 (Mica Creek - Nicola) switchgear roof replacement AB-BC
Syncrude 13-Aug-18 09:00 23-Aug-18 22:00 10.54 Days
Continuous
D05 78 (D05 D05),D05 T2 (D05 Syncrude) urgent adjustment on protection settings  
ATCO 13-Aug-18 09:00 26-Aug-18 18:00 13.38 Days
Continuous
840S McNeill Station arrestor install and bird proofing AB-SK
ALTALINK, EPCOR 13-Aug-18 11:00 23-Aug-18 16:00 10.21 Days
Continuous
1057L (89s Ellerslie - 657s Summerside) 89s452 breaker replacement and 89s73 PT replacement  
EPCOR 20-Aug-18 07:00 21-Aug-18 17:00 1.42 Days
Continuous
330p 1201 (330p Genesee) BKR Maint  
ATCO 20-Aug-18 07:00 26-Aug-18 18:00 6.46 Days
Continuous
9L913 (69s North Barrhead - 732s Mitsue) Outage to connect the permanent line back up to the existing line.
Return to Normal after rebuilding of current section of line due to 12L41 500KV right-of-way requirements.
 
ATCO 20-Aug-18 08:00 23-Aug-18 17:00 3.38 Days
Continuous
7L20 (810s Dome Cutbank - 740s H.R.Milner) Changing over rated XARMS  
BCH 20-Aug-18 09:00 31-Aug-18 17:00 11.33 Days
Continuous
1L274 (EFT - 1D2L274) Annual Plan Request F19 AB-BC
SUNCOR 20-Aug-18 09:00 09-Sep-18 18:00 20.38 Days
Continuous
29EDD-34 Edd34Sub,29PL9-15 (29EDD-56 - 29EDD-34) 5 year maintenance on breakers, bus CT and switches  
ALTALINK 20-Aug-18 09:15 24-Aug-18 17:45 4.35 Days
Continuous
754L (245s - 754L65A) GOI,754L (245s Seebe - 754L65A) Structure Replacements (Str 34-64)  
ALTALINK 20-Aug-18 09:30 20-Aug-18 18:00 8.5 Hours
Daily
729L (542s - 729L13A) - GOI Installing bird diverters on two spans of OHSW between Structures #138 - #140  
ALTALINK 20-Aug-18 09:30 22-Aug-18 12:30 2.13 Days
Continuous
510s ACF 22 GOI,510s ACF22 (510s Sunnybrook) Outage and GOI required to inspect the Filter Bank. Inspection  
ALTALINK 20-Aug-18 09:30 23-Aug-18 16:30 3.29 Days
Continuous
71s 921L PT & 921L (71s-987s) Advice Replace PT's  
ALTALINK 20-Aug-18 10:00 20-Aug-18 11:00 60 Mins
Daily
89s252 (1056L) Breaker Open - Advice Required for replacing DC fuse holder in junction box for existing outage 1057L GOI. Junction box shipped with wrong fuse size holder. 89s252 breaker is required to be open to avoid protection issues with DC offline. No work is being performed around the breaker so just a breaker open advice is required  
ALTALINK 20-Aug-18 10:00 24-Aug-18 15:00 4.21 Days
Continuous
42s T1 TX18508 - GOI,42s T1 (42s Sarcee) Repairs to Control Building Roof, Required due to proximity  
ALTALINK 20-Aug-18 10:00 30-Aug-18 14:15 10.18 Days
Daily
74s T1 & 240kV Bus 1 - GOI Cut Open Point 'A' on 240kV Bus between 74s48 and 74s20N. Bus Required in order to replace 74s252 Ct due to proximity  
ALTALINK 20-Aug-18 11:00 20-Aug-18 17:00 6 Hours
Daily
900L (63s-17s) - GOI,17s 10 (17s Benalto),17s 1652 (17s Benalto),900L (63s Red Deer - 17s Benalto) 17s900E Unable to open and needs to be adjusted  
ALTALINK 20-Aug-18 11:00 23-Aug-18 18:00 3.29 Days
Continuous
39s T2 TX5778 - GOI,39s T2 (39s Bickerdike) Replace T2 Tertiary Bushing  
ATCO 20-Aug-18 12:00 23-Aug-18 12:00 3 Days
Continuous
7L199 (347s Fox Creek - 741s Fox Creek) 7L199 relocate poles 30 36 [ crew charge ]
7L199 Line Move
 
ALTALINK 20-Aug-18 13:15 23-Aug-18 15:45 3.1 Days
Continuous
310p 2152 (310p Sundance),310p 2052 (310p Sundance) Migrate and commission stub bus protections, breakers, breaker fail and Tele-protection alarms, status, controls, metering and remote access to new RTU and LAN.  
ALTALINK 21-Aug-18 06:30 22-Aug-18 07:30 25 Hours
Daily
754L (754L65A - 754L75) Customer Advice Customer Requested Outage  
ALTALINK, EPCOR 22-Aug-18 07:00 22-Aug-18 17:00 10 Hours
Continuous
1238L (510s Sunnybrook - 330p Genesee),Sunnybrook BKR Maint  
ALTALINK 22-Aug-18 07:00 23-Aug-18 07:00 24 Hours
Continuous
250p11 (250p Bighorn Plant) maintenance  
ALTALINK 22-Aug-18 07:00 23-Aug-18 07:00 24 Hours
Continuous
250p22 (250p Bighorn Plant) maintenance  
ALTALINK 22-Aug-18 07:45 22-Aug-18 16:30 8.75 Hours
Daily
718L (263s-250P) GOI Installing new DDR- wiring and testing inputs, status and analogs from 718L (L7) protections  
ALTALINK 22-Aug-18 12:30 23-Aug-18 17:30 29 Hours
Continuous
510s ACF 13 GOI,510s ACF13 (510s Sunnybrook) Outage and GOI required to inspect the Filter Bank. Inspection  
EPCOR 23-Aug-18 07:00 24-Aug-18 17:00 1.42 Days
Continuous
330p 1203 (330p Genesee) BKR Maint  
ATCO 27-Aug-18 07:00 28-Aug-18 15:30 1.35 Days
Continuous
2029S ACF14 ACF 14 Shunt reactor inspection & testing.  
ATCO 27-Aug-18 08:00 30-Aug-18 17:00 3.38 Days
Continuous
7L20 (810s Dome Cutbank - 740s H.R.Milner) Changing over rated XARMS  
ENMAX 27-Aug-18 08:00 07-Sep-18 16:00 11.33 Days
Continuous
162.2TR (ENMAX 162 Beddington) Tapchanger Inspection. Doble Test Transformer. Transformer maintenance. Check reversing SW. HV SW maint SW88 . 162.2TR gas relay testing. Doble 162PT138-T2. Fall wash?? Upgrade T60 settings. Doble 162PT138-T2.  
ALTALINK 27-Aug-18 09:00 30-Aug-18 17:00 3.33 Days
Continuous
77s 40 (77s Sagitawah) Replacing CT's  
ALTALINK 27-Aug-18 12:00 28-Aug-18 17:00 29 Hours
Continuous
28s 44 (28s West Brooks) Maintain 240kV SF6 breaker  
ATCO 27-Aug-18 12:00 30-Aug-18 12:00 3 Days
Continuous
7L199 (347s Fox Creek - 741s Fox Creek) 7L199 relocate poles 30 36 [ crew charge ]
7L199 Line Move
 
ALTALINK 27-Aug-18 13:00 30-Aug-18 16:00 3.13 Days
Continuous
310p 2652 (310p Sundance),310p 2752 (310p Sundance),989L (310p Sundance - 77s Sagitawah),989L (310p - 77s) ADVICE Migrate and commission all L1 - 974L at 310P Sundance associated line protections, breakers, breaker fail and Tele-protection alarms, status, controls, metering and remote access to new RTU and LAN. Migrate and commission CVT-L1 alarms.  
ALTALINK 28-Aug-18 08:00 29-Aug-18 16:00 1.33 Days
Continuous
86s T1 (86s Bigstone),86s T1 & 138kV Bus (804,805L) - Advice Replace one phase of PT32064 associated with SS2. PT cables terminate in junction box 86s30  
ATCO 28-Aug-18 09:30 30-Aug-18 16:00 2.27 Days
Continuous
963S 901,9L29 963S Coyote 901CT Ratio Change Project
CT Ration & Relay Settings Changes on equipment
Associated with 901CT and 50BF/901 Relay
 
ALTALINK 29-Aug-18 07:30 29-Aug-18 12:30 5 Hours
Daily
199L (268s-259s-347s) GOI Outage to create open point at str 199L187A  
ALTALINK 30-Aug-18 09:30 30-Aug-18 12:30 3 Hours
Daily
42s C2/C3/- 240kV SBus - GOI Install 240kV Pollution Monitor  
ENMAX 01-Sep-18 08:00 01-Sep-18 18:00 10 Hours
Continuous
162s 138KV & 240KV Bus. 162.2TR Fall Substation Washing. 162.2TR, RB83, RB84. RB136, 162MD138-162.2TR, 162MD240-162.2TR  
ATCO 03-Sep-18 07:00 09-Sep-18 18:00 6.46 Days
Continuous
9L913 (69s North Barrhead - 732s Mitsue) Outage to connect the permanent line back up to the existing line.
Return to Normal after rebuilding of current section of line due to 12L41 500KV right-of-way requirements.
 
BCH 03-Sep-18 09:00 07-Sep-18 17:00 4.33 Days
Continuous
1L274 (Elkford - EFT1D22),1L274 (EFT 1D22 - 1D3L274) Annual Plan Request AB-BC
SUNCOR 03-Sep-18 09:00 09-Sep-18 18:00 6.38 Days
Continuous
29EDD-1 29EDD1s 552 (29EDD-1 Millennium) maintenance - replacement of 29CT-5  
BCH 03-Sep-18 09:00 14-Sep-18 17:00 11.33 Days
Continuous
5L98 (BCH Nicola - Vaseux Lake) annual plan request F19 AB-BC
EPCOR 04-Sep-18 07:00 08-Sep-18 17:00 4.42 Days
Continuous
L2405BKR @ Lambton Maint  
EPCOR 04-Sep-18 07:00 26-Oct-18 17:00 52.42 Days
Continuous
TX1 @ Petrolia,816s T1 (816s Petrolia) Tap Changer & Bushing replacements  
ALTALINK 04-Sep-18 07:30 04-Sep-18 17:00 9.5 Hours
Daily
367s T2,240kV Bus 2 & 138kV Bus 2 GOI Retesting of T2 non-electrical trips to all bus breakers. Replace 509ITM  
ALTALINK 04-Sep-18 08:00 17-Sep-18 17:00 13.38 Days
Continuous
681s T2 (Tx18863) GOI Isolate and install grounds for the Customer to repair cable terminations  
CNRL 04-Sep-18 08:00 20-Sep-18 15:00 16.29 Days
Continuous
75-TR-1801 (838s Horizon Mining),75-TR-2701 (838s Horizon Mining) transformer OLTC maintenance  
CNRL 04-Sep-18 08:00 20-Sep-18 15:00 16.29 Days
Continuous
842s 75-TR-4701 (842s Horizon Upgrading),75-TR-8701 (842s Horizon Upgrading) transformer OLTC maintenance  
ALTALINK 04-Sep-18 08:15 21-Sep-18 16:45 17.35 Days
Continuous
918L (281s - C162s) GOI component replacement, and installing interphase spacers on 918L circuit between str 763-839  
ALTALINK 04-Sep-18 10:00 07-Sep-18 09:00 2.96 Days
Continuous
289s1552 GOI [SWEATD] Replacement of CT at 289s1552  
ALTALINK 04-Sep-18 11:00 08-Sep-18 10:00 3.96 Days
Continuous
HVDC Link 510s buses A and B,511s AC ya 510s, 511s HVDC Link Outage to modify and test disconnects and earthing switches in the HVDC AC and DC yards. DC Link will be out of service. 1238L will be open. 1239L and 1203L remain in service.  
ALTALINK, ATCO 05-Sep-18 11:00 05-Sep-18 15:00 4 Hours
Daily
953L/9L953 (574s - A755s) De-energized (,953L (574s Nilrem - 755s Cordel),9L953 (574s Nilrem - 755s Cordel) Required for 9465R (lougheed) Tower Replacement (dynamic study)  
ALTALINK 06-Sep-18 07:30 06-Sep-18 16:30 9 Hours
Daily
86s 1752 (86s Bigstone),914L (86s Bigstone - 87s Gaetz),86s1752 (affecting 914L) GOI top up low oil on 240kV HLR-E breaker  
EPCOR 08-Sep-18 07:00 08-Sep-18 17:00 10 Hours
Continuous
Bus 2 240KV @ Cloverbar Doble  
ALTALINK 08-Sep-18 08:00 14-Sep-18 17:00 6.38 Days
Continuous
Valve Hall and T11 GOI,510s DC yard 510s HVDC Link Outage/ Annual Inspection and Maintenance. DC Link will be out of service.  
ALTALINK 08-Sep-18 09:00 14-Sep-18 17:00 6.33 Days
Continuous
511s DC yard,Valve Hall and T11 GOI Annual Inspection and Maintenance, Link will be out of service. Link will be out of service  
ENMAX 09-Sep-18 12:00 09-Sep-18 18:00 6 Hours
Continuous
21.80L. 20.82L. TAU CAP. 21.1TR. 21.4TR Fall Substation Washing  
ATCO 10-Sep-18 07:00 28-Sep-18 17:00 18.42 Days
Continuous
919S 906,847S 901T Transformer protection upgrade during planned generator turnaround.  
ALTALINK 10-Sep-18 07:30 10-Sep-18 12:30 5 Hours
Daily
199L (268s-259s-347s) GOI Outage to close open point at str 199L187A  
ENMAX 10-Sep-18 08:00 10-Sep-18 18:00 10 Hours
Continuous
50L. 21.2TR. 138KV PT @ Bearspaw. 21 CAP Fall Substation Washing. 50L, 21.2TR, 21CAP  
ATCO 10-Sep-18 08:00 13-Sep-18 17:00 3.38 Days
Continuous
7L20 (810s Dome Cutbank - 740s H.R.Milner) Changing over rated XARMS  
ALTALINK 10-Sep-18 08:00 27-Sep-18 17:00 17.38 Days
Continuous
62s T5 (62s Brazeau) Protection upgrade  
BCH 10-Sep-18 09:00 14-Sep-18 17:00 4.33 Days
Continuous
1L274 (B1s BCH Natal - 1D1L274) 2018 annual plan work AB-BC
ALTALINK 10-Sep-18 09:00 21-Sep-18 15:30 11.27 Days
Continuous
755L (535s Joffre - 247s Piper Creek),247s Piper Creek 138kV Bus,427L (63s Red Deer - 247s Piper Creek) Replacement of protection and control devices  
SUNCOR 10-Sep-18 09:00 23-Sep-18 18:00 13.38 Days
Continuous
260kV bus 29PP-45 (29EDD-34) 5 year maintenance on 29PP-45 bus  
ATCO 10-Sep-18 09:30 12-Sep-18 13:00 2.15 Days
Continuous
946s 901 (946s Oakland) 946S Oakland BKR 901 CT Ratio Increase

CT Ratio Changes and Protection Settings
 
ALTALINK 11-Sep-18 08:00 11-Sep-18 16:00 8 Hours
Continuous
788L/788AL/602L/789L (157s - 140s - A898,788L (898s Heart Lake - 788L107A - 602L1),788L (157s Lac La Biche - 898s Heart Lake),789L (818s Winefred - 898s Heart Lake) Adjusting 788L107A and 788L106B  
ENMAX 11-Sep-18 08:16 11-Sep-18 16:00 7.73 Hours
Continuous
162s 240KV Bus. 918L Fall Substation Washing. 918L, RB133, RB132. 918L already out of service (Altalink request)  
BCH 11-Sep-18 09:00 11-Sep-18 17:00 8 Hours
Continuous
2L113 (B1s Natal - B2s Cranbrook),1L274 (B1s BCH Natal - 1D1L274) Placeholder for Annual Plan Request F19 AB-BC
SUNCOR 11-Sep-18 09:00 14-Sep-18 18:00 3.38 Days
Continuous
29EDD-1 29EDD1s 452 (29EDD-1 Millennium) SF6 top up and leak repair  
ALTALINK 12-Sep-18 07:00 12-Sep-18 18:00 11 Hours
Daily
789L (818s Winefred - 898s Heart Lake),788L (788L Tap - 898s Heart Lake),788L (898s Heart Lake - 788L107A - 602L1),788L(788L107A - A898s) and 602L/789L - G Adjusting 602LA1 and OHSW @ Structure 788L277  
ATCO 12-Sep-18 13:01 14-Sep-18 16:00 2.12 Days
Continuous
946S 902 946S Oakland 902CT Ratio Increase, CT Ratio and Protection Settings Changes  
ALTALINK 13-Sep-18 08:00 15-Sep-18 17:00 2.38 Days
Continuous
180L (15s Fort Macleod - 928s East Stavely),180L (15s-928s) GOI Place / dress new 15s T2 underneath 180L  
ALTALINK 13-Sep-18 09:30 13-Sep-18 16:30 7 Hours
Continuous
681s 1152 (681s Bannerman) N Ph densimeter req replacement  
ENMAX, ALTALINK 15-Sep-18 08:00 15-Sep-18 16:00 8 Hours
Continuous
36.81L (44s Bearspaw - ENMAX 36) SF6 gas sample 36B138-36.81  
ATCO 17-Sep-18 07:00 18-Sep-18 13:30 30.5 Hours
Continuous
2029S ACF23 Filter Bank Maintenance and Inspection, redundant filter banks in service, no system impact  
EPCOR 17-Sep-18 07:00 21-Sep-18 17:00 4.42 Days
Continuous
805s T1 (805s Jasper),72JM18 (805s Jasper - Meadowlark),72JW19 (805s Jasper - Woodcroft),TX1 @ Jasper Doble  
ALTALINK 17-Sep-18 07:00 28-Sep-18 18:00 11.46 Days
Continuous
681s T1 (Tx18862) GOI Customer outage to repair cable terminations  
ALTALINK 17-Sep-18 08:00 21-Sep-18 16:30 4.35 Days
Continuous
268s Station Advice 69 kV bus PT replacement, protection replacement - 503L, connect protections on 526L to 268s503 (temporary), work on 138 kV Bus rebuild.  
ALTALINK 17-Sep-18 09:00 17-Sep-18 18:00 9 Hours
Daily
926L & 17s 240kV NBus & T1 - GOI Outage required to replace strain insulators on 995L due to reasons of approach. 995L goes over top of the north bu  
BCH 17-Sep-18 09:00 21-Sep-18 17:00 4.33 Days
Continuous
5L94 (Cranbrook - 102s Langdon) Annual Plan Request F19  
ALTALINK 17-Sep-18 09:00 24-Sep-18 16:00 7.29 Days
Continuous
995L (17s- Open Jumpers) - ADVICE Replacement of Strain insulators for 995L (on sub side of 17s995N switch),Post insulators for 17s76, 17s77, CVT(17s78) replacement 17s12 and 17s13 breaker controls (new C60 relays)  
ALTALINK 17-Sep-18 09:00 24-Sep-18 18:00 7.38 Days
Daily
17s C1 - GOI Outage required to replace strain insulators on 995L due to reasons of approach on the substation side of 995L  
MONTANA 17-Sep-18 09:00 27-Sep-18 18:00 10.38 Days
Continuous
MATL (120s Picture Butte - Montana) align with 1201L outage AB-MATL
ALTALINK 17-Sep-18 09:00 27-Sep-18 18:00 10.38 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) AML Maintenance Components and BCH Line Maintenance AB-BC
ATCO 17-Sep-18 10:00 19-Sep-18 12:00 2.08 Days
Continuous
946s 903 (946s Oakland) 946S Oakland 903CT Ratio Increase, CT Ratio Changes and Protection Settings  
ALTALINK 17-Sep-18 10:30 19-Sep-18 17:30 2.29 Days
Continuous
310p252 GOI 310p252 (CB773) MO 240kV HPF  
ALTALINK 17-Sep-18 12:30 20-Sep-18 16:00 3.15 Days
Continuous
275s T2 (275s Jenner) Maintain, fix leaks and heaters on T2 and have MR techs onsite to perform tapchanger upgrades.  
ALTALINK 17-Sep-18 13:00 20-Sep-18 16:00 3.13 Days
Continuous
926L (310p - 17s) Advice Migrate and commission all L9 - 926L at 310P Sundance associated line protections, breakers, breaker fail and Tele-protection alarms, status, controls, metering and remote access to new RTU and LAN. Migrate and commission CVT-L4 alarms.  
ALTALINK, Lethbridge 18-Sep-18 08:00 04-Oct-18 14:00 16.25 Days
Continuous
813L (241s Lethbridge Uplands - 146s Lethbridge MacDonald),667L (370s North Lethbridge - 146s Lethbridge MacDonald) Replace 138kv motorized airbreak  
ALTALINK, Lethbridge 18-Sep-18 08:00 04-Oct-18 14:00 16.25 Days
Continuous
667L (370s North Lethbridge - 146s Lethbridge MacDonald),370s75 (667L) Advice for CofL Switch replacement @ 146s - City of Lethbridge  
ALTALINK 18-Sep-18 08:00 25-Oct-18 14:00 37.25 Days
Continuous
752L (64s - 752L67) GOI Project Rebuild of 752L of str66 to 64s  
ALTALINK 18-Sep-18 16:00 11-Oct-18 15:00 22.96 Days
Continuous
163s Partial 138kV Bus - Advice Replace 163s4 PT, Replace 163s64 Breaker, & Add New 163s65, Switch & Perform 163s869W Breaker Fail Replacement.  
ALTALINK 19-Sep-18 09:00 24-Sep-18 16:00 5.29 Days
Continuous
74s T2 (TX18571) -GOI Fix oil leaks on T2 Tx18571, doble and maintain.  
ENMAX 19-Sep-18 12:00 19-Sep-18 18:00 6 Hours
Continuous
23.80L. 23.4TR Fall Substation Washing  
ATCO 19-Sep-18 13:00 21-Sep-18 16:00 2.13 Days
Continuous
946s 904 (946s Oakland) 946S Oakland BKR 904 CT Ratio Increase

CT Ratio Changes and Protection Settings
 
ALTALINK 21-Sep-18 16:30 19-Oct-18 08:00 27.65 Days
Continuous
T3 & 138 kV Bus Advice,797L (364s Whitecourt industrial - 268s Whitecourt),268s T1 (268s Whitecourt),268s T3 (268s Whitecourt),199L (268s Whitecourt - 199L187B) Complete replacement of 138 kV equipment and protections.  
ENMAX 22-Sep-18 12:00 22-Sep-18 18:00 6 Hours
Continuous
7.84L. 36.81L. 36.1TR. 36.3TR. 36PT138-Z31. 7PT138-7.84 Fall Substation Washing 36.1, 36.3, BT3  
EPCOR 23-Sep-18 07:00 23-Sep-18 17:00 10 Hours
Continuous
920L @ Castledowns / North Calder Doble  
ALTALINK 24-Sep-18 07:00 24-Sep-18 09:59 2.98 Hours
Daily
879L (244s - 368s) GOI for HLM high load move  
ATCO 24-Sep-18 07:00 25-Sep-18 15:30 1.35 Days
Continuous
2029S ACF12 Filter Bank Maintenance and Inspection, redundant filter banks in service, no system impact  
ATCO 24-Sep-18 08:00 28-Sep-18 15:00 4.29 Days
Continuous
9L46 (932s Pemukan - 959s Lanfine) GOI to complete the OPGW repair. on 9L46

STUDY DUE AUGUST 14 2018
 
ALTALINK 24-Sep-18 08:00 28-Sep-18 17:00 4.38 Days
Continuous
511s T30 and SVC Plus GOI Repair leaking bladder on TX30 (Tx18871), Replace failed power module in the SVC Plus. No impact to Link Dispatch for MW transfer. No impact to Link Dispatch for MW transfer.  
SUNCOR 24-Sep-18 09:00 05-Oct-18 18:00 11.38 Days
Continuous
29PL9-15 (29EDD-56 - 29EDD-34),29PL9-14 (29EDD-56 - 29EDD-34) maintenance on bus 29PP-41F  
ATCO 24-Sep-18 10:00 26-Sep-18 12:00 2.08 Days
Continuous
946s 905 (946s Oakland) 946S Oakland 905CT Ratio Increase, CT Ratio Changes and Protection Settings  
ALTALINK 24-Sep-18 10:01 24-Sep-18 13:00 2.98 Hours
Daily
612L (336s - 368s) GOI for HLM high load move  
ALTALINK 24-Sep-18 10:30 27-Sep-18 17:30 3.29 Days
Continuous
89s752 GOI 89s752 leaking capacitors, ADD 89s752 (CB1011) MO 240kV HPF  
ALTALINK 24-Sep-18 13:00 27-Sep-18 16:00 3.13 Days
Continuous
973L (310p - 39s) Advice Migrate and commission all L8 - 973L at 310P Sundance associated line protections, breakers, breaker fail and Tele-protection alarms, status, controls, metering and remote access to new RTU and LAN. Migrate and commission CVT-L8 alarms.  
EPCOR 25-Sep-18 07:00 26-Sep-18 17:00 1.42 Days
Continuous
805s C1 (805s Jasper) Doble  
ALTALINK 25-Sep-18 08:00 25-Sep-18 16:00 8 Hours
Daily
870L (263s-262s) GOI Installing new DDR- wiring and testing inputs, status and analogs from 870L (L5) protections.  
BCH 25-Sep-18 09:00 28-Sep-18 17:00 3.33 Days
Continuous
1L274 (Britt Creek - 1D4L274) rating restoration project & replace end-of-life structures AB-BC
ATCO 26-Sep-18 07:00 27-Sep-18 15:30 1.35 Days
Continuous
2029S ACF13 Filter Bank Maintenance and Inspection, redundant filter banks in service, no system impact  
EPCOR 26-Sep-18 07:00 28-Sep-18 17:00 2.42 Days
Continuous
Tx2 Outage @ 803S Lambton S/S Cutover of new relay protection  
ENMAX 26-Sep-18 12:00 26-Sep-18 18:00 6 Hours
Continuous
162s 240KV Bus. 932L Fall Substation Washing. 932L, RB135, RB136  
ATCO 26-Sep-18 13:00 28-Sep-18 16:00 2.13 Days
Continuous
946s 908 (946s Oakland) 946S Oakland 908CT Ratio Increase, CT Ratio Changes and Protection Settings  
EPCOR 27-Sep-18 07:00 28-Sep-18 17:00 1.42 Days
Continuous
816s P2404 (816s Petrolia) Doble  
ATCO 27-Sep-18 10:30 28-Sep-18 16:00 29.5 Hours
Continuous
885S 902T,885S 501R Investigate and Repair Oil Leak, 240/144 tie transformer and 501 Reactor unavailable.  
ATCO 28-Sep-18 07:00 03-Oct-18 17:00 5.42 Days
Continuous
7L75 Upgrade 7L75 protection and install new TPR and RAS  
ENMAX 28-Sep-18 08:00 28-Sep-18 18:00 10 Hours
Continuous
24PT138-Z31. 24.81L. 24.83L. 24B138-24BT3. 24.1TR Doble 24PT138-Z31, 24B138-24.83. SF6 Gas sample 24B138-24.83. Check reversing SW 24.1TR. Sub Washing  
EPCOR 01-Oct-18 07:00 03-Oct-18 17:00 2.42 Days
Continuous
Tx1 Outage @ 803S Lambton S/S Cutover of new relay protection  
ALTALINK 01-Oct-18 07:00 04-Oct-18 17:00 3.42 Days
Continuous
916L (42s-5s) GOI 916L POW breaker (1352) modifications  
ALTALINK 01-Oct-18 08:00 05-Oct-18 18:00 4.42 Days
Continuous
62s 207 (62s Brazeau),62s 31 (62s Brazeau),62s T7 (62s Brazeau),62s T4 (62s Brazeau),62s T5 (62s Brazeau),62s C1 (62s Brazeau),202L (61s Lodgepole - 62s Brazeau),801L (62s Brazeau - 294s Brazeau Outlet Works),62s 138 KV Bus Advice Protection upgrade  
ATCO 01-Oct-18 10:00 03-Oct-18 12:00 2.08 Days
Continuous
946s 909 (946s Oakland) 946S Oakland BKR 909 CT Ratio Increase

CT Ratio Changes and Protection Settings
 
MONTANA 01-Oct-18 11:00 04-Oct-18 18:00 3.29 Days
Continuous
MATL (120s Picture Butte - Montana) align with 1201L outage AB-MATL
ALTALINK 01-Oct-18 12:00 04-Oct-18 18:00 3.25 Days
Continuous
1201L (520s Bennett - BCH Cranbrook) Maintenance Components AB-BC
ALTALINK 01-Oct-18 13:00 04-Oct-18 16:00 3.13 Days
Continuous
1046L (310p - 338s) ADVICE Migrate and commission all L4 - 1046L at 310P Sundance associated line protections, breakers, breaker fail and Tele-protection alarms, status, controls, metering and remote access to new RTU and LAN. Migrate and commission CVT-L4 alarms.  
SUNCOR 02-Oct-18 09:00 12-Oct-18 18:00 10.38 Days
Continuous
29PL9-2 (29EDD-1 Millennium - 848s Ruth Lake) maintenance on 29CTT-1 in 29EDD-1  
ALTALINK 02-Oct-18 10:15 04-Oct-18 17:45 2.31 Days
Continuous
520s T1 (520s Bennett) Installing a main tank oil filter on TX18415 AB-BC
ALTALINK 03-Oct-18 07:00 24-Oct-18 18:00 21.46 Days
Continuous
510s2852 and 510s3052 (1238L) - GOI Installing new 510s2952, CT's, 510s46, 510s48 and protection/breaker fail mods; Closing Open Points 'A', 'B', 'D' & 'E'  
ALTALINK 03-Oct-18 08:00 04-Oct-18 15:00 31 Hours
Continuous
650s SVC Outage Inspection on the SVC  
ENMAX 07-Oct-18 08:00 07-Oct-18 18:00 10 Hours
Continuous
162s 138KV Bus. 162.81L Fall Substation Washing  
BCH 08-Oct-18 09:00 12-Oct-18 17:00 4.33 Days
Continuous
1L275 (799s Coleman - Natal) Annual Plan Request F19 - Kirk Carston or Trevor Wareham AB-BC
ATCO 09-Oct-18 07:00 10-Oct-18 15:30 1.35 Days
Continuous
2029S ACF11 Filter Bank Maintenance and Inspection, redundant filter banks in service, no system impact  
ALTALINK 09-Oct-18 12:00 09-Oct-18 17:00 5 Hours
Daily
777L (48s - 245s) GOI Adjust 245s24 switch.  
ALTALINK 09-Oct-18 12:00 12-Oct-18 18:00 3.25 Days
Continuous
1112L (89s - 289s) - GOI Component replacements between Structures #1 - 49  
ATCO 11-Oct-18 07:00 17-Oct-18 17:00 6.42 Days
Continuous
800S 702,7L73 Upgrade 7L73 protection and install TPR and new RAS.  
ALTALINK 11-Oct-18 07:30 29-Oct-18 17:00 18.4 Days
Continuous
15s Partial 138kV Bus & T1 (180L,463L) 15s substation reconfiguration  
BCH 12-Oct-18 09:00 19-Nov-18 17:00 38.38 Days
Continuous
5L72 (Mica Creek - Nicola) Placeholder for MCA Switchgear Roof Replacement. AB-BC
ATCO 13-Oct-18 07:00 13-Oct-18 17:00 10 Hours
Continuous
7L73 (829s Boucher Creek - 800s Friedenstal),800s 702 (800s Friedenstal) Breaker fail testing  
BCH 15-Oct-18 08:00 15-Oct-18 16:00 8 Hours
Continuous
2L294 (Nelway - A.A. Lambert) Fortis Annual Plan 2018
(Outage)AAL CB3-1 Switch Replacement, to CREATE BUS CUT to RESTORE 2L294 during the replacement of CB3-1
AB-BC
BCH 15-Oct-18 09:00 19-Oct-18 17:00 4.33 Days
Continuous
1L274 (EFT - 1D2L274) Annual Plan Request F19 AB-BC
ALTALINK 15-Oct-18 10:30 25-Oct-18 15:00 10.19 Days
Continuous
64s T1 & 901L - GOI Replace 64s901 Breaker to SF6 Type  
ALTALINK 15-Oct-18 11:00 19-Oct-18 15:00 4.17 Days
Continuous
719L (575s-378s) - GOI Upgrade 378s Shell Caroline Line Prot (A21/L4 & B21/L4.  
ALTALINK 15-Oct-18 12:00 18-Oct-18 18:00 3.25 Days
Continuous
914L (289s - 86s) - GOI Component replacements between Structures #52 - 143  
ALTALINK 16-Oct-18 07:00 17-Oct-18 18:00 1.46 Days
Continuous
72s T1 (72s Leismer),72s T1 & 25kV Bus - GOI Transformer Bushing Replacement  
ALTALINK 19-Oct-18 11:00 19-Oct-18 14:00 3 Hours
Daily
268s503 Advice,268s 503 (268s Whitecourt),503L (268s Whitecourt - 323s Whitecourt Power) Disconnect temporary trip. Will be restoring 268s T1 while 268s503 is out of service.  
BCH 19-Oct-18 15:00 19-Oct-18 17:00 2 Hours
Continuous
5L52 (Ingledow - Custer) ING 5D25 cutting over controls to new station control equipment AB-BC
ALTALINK 22-Oct-18 12:00 06-Nov-18 18:00 15.29 Days
Continuous
914L (86s - 87s) - GOI Component replacements between Structures #144 - 391  
ATCO 25-Oct-18 07:00 02-Nov-18 17:00 8.42 Days
Continuous
7L73,730S 703 Upgrade 7L73 protection and install teleprotection and new RAS @ 730s, 829s radial fed from 800s.  
BCH 25-Oct-18 09:00 25-Oct-18 17:00 8 Hours
Continuous
2L294 (Nelway - A.A. Lambert) Fortis Annual Plan 2018 and AAL CB3-1 Switch Replacement AB-BC
ATCO 29-Oct-18 07:00 29-Oct-18 17:00 10 Hours
Continuous
7L07 (790s Poplar Hill - 815s Goodfare),815s 702 (815s Goodfare) Protection upgrade  
BCH 29-Oct-18 09:00 08-Nov-18 17:00 10.38 Days
Continuous
1L274 (Britt Creek - 1D4L274) Rating Restoration project & replace end-of-life structures AB-BC
ATCO 30-Oct-18 07:00 30-Oct-18 17:00 10 Hours
Continuous
815s 704 (815s Goodfare),7L69 (815s Goodfare - 731s Elmworth) Protection upgrade for Advantage Oil and Gas addition  
ALTALINK, Lethbridge 05-Nov-18 13:00 06-Dec-18 14:00 31.04 Days
Continuous
824L (593s Lethbridge Lakeview - 618s Riverbend) Install self-supporting structures  
BCH 06-Nov-18 09:00 16-Nov-18 17:00 10.33 Days
Continuous
1L274 (Britt Creek - 1D4L274) Annual Plan Request F19 AB-BC
CapitalPower, ATCO 07-Nov-18 07:00 07-Nov-18 17:00 10 Hours
Continuous
615S Halkirk,9L93 Attach new in out station  
ALTALINK 07-Nov-18 07:00 08-Nov-18 18:00 1.46 Days
Continuous
914L (87s - 63s) - GOI Component replacements between Structures #430 - 449  
ATCO 13-Nov-18 07:00 17-Nov-18 17:30 4.44 Days
Continuous
7L77,7L65 Transfer line to new substation
7L65 and 77 Lines on a common H frame structure. Only 7L77 being moved at this time.
 
ALTALINK 13-Nov-18 09:15 29-Nov-18 17:45 16.35 Days
Continuous
925L (63s Red Deer - 74s Janet) Maintenance Components (Str 117-404)  
ALTALINK 26-Nov-18 07:00 04-Dec-18 18:00 8.46 Days
Continuous
510s 2952 (510s Sunnybrook),510s 2852 (510s Sunnybrook) Closing Open Point 'C' and energizing new VT13 and new reactor bank R3 (72 hour soak test)  
ALTALINK 03-Dec-18 07:00 06-Dec-18 18:00 3.46 Days
Continuous
1046L (310p Sundance - 338s Cherhill) 1046L will be connected into 19s  
BCH 04-Dec-18 09:00 14-Dec-18 17:00 10.33 Days
Continuous
1L274 (Britt Creek - 1D4L274) Annual Plan Request F19 AB-BC
CapitalPower, ATCO 07-Dec-18 07:00 12-Dec-18 17:00 5.42 Days
Continuous
9L93,615S Halkirk Reroute OPGW test and commission.  
ALTALINK 01-Jan-19 07:00 28-Feb-19 18:00 58.46 Days
Continuous
1046L (310p Sundance - 338s Cherhill),902L (19s Wabamun - 310p Sundance),1046L (310p-338s-19s) and 902L (310p-19s Replacing structures  
ATCO 08-Jan-19 07:00 11-Jan-19 17:30 3.44 Days
Continuous
9L01 (888s Dover - 848s Ruth Lake) 9L01 Cut in for in and out addition of 951S Thickwood Hills substation. Remove bypass at substation.  
ATCO 15-Jan-19 07:00 18-Jan-19 17:30 3.44 Days
Continuous
9L07 (885s McMillan - 888s Dover) Cut in 951S Thickwood Hills substation.  
BCH 15-Jan-19 09:00 18-Jan-19 17:00 3.33 Days
Continuous
2L294 (Nelway - A.A. Lambert) Placeholder for Annual Plan Request F19 - BC maintenance does not affect AB ATC AB-BC
ENMAX 04-Feb-19 08:00 15-Feb-19 16:00 11.33 Days
Continuous
24.83L Transmission Line Relocate  
ALTALINK, Lethbridge 02-Apr-19 13:00 09-Apr-19 15:00 7.08 Days
Continuous
725L (674s Lethbridge Bowron - 15s Fort MacLeod) replace 138KV Breaker  
ALTALINK, Lethbridge 23-Apr-19 13:00 09-May-19 14:00 16.04 Days
Continuous
725L (111s Coalbanks - 674s Lethbridge Bowron) replace 138KV Breaker  
ATCO 03-Jun-19 09:00 29-Jul-19 17:00 56.33 Days
Continuous
840S McNeill Station 2019 McNeill Fall T/A. Arrestor install and Bird Proofing AB-SK
ATCO 16-Jul-19 07:00 19-Jul-19 17:30 3.44 Days
Continuous
9L46 (932s Pemukan - 959s Lanfine) Attach new Sharp Hills wind farm in/out connection.  

AB-BC, AB-SK & AB-MATL: refer to AESO web posting: http://itc.aeso.ca/itc/public/reportIndex.do
Also,
AB-BC, AB-SK & AB-MATL: refer to ISO Rule 203.6: http://www.aeso.ca/rulesprocedures/18592.html

Prepared On: 2018-08-09   3:24:19 PM


This document and the information contained herein are based upon information and data which by their nature contain a degree of uncertainty and are subject to change. In addition, this document may contain information and data from public sources and/or third parties, which have been assumed to be accurate and complete and have not been verified. Accordingly, the Independent System Operator, operating as the Alberta Electric System Operator (the "AESO") makes no warranty, representation or guarantee, express or implied, with respect to this document or the information contained herein, including, but not limited to, any warranty, representation or guarantee of accuracy, completeness, timeliness, reliability, availability, absence of computer virus, non- infringement, merchantability or suitability for any purpose. Under no circumstances will the AESO, its members, officers, employees, contractors or agents, or any of their respective affiliates, be liable for any errors or omissions in, or any losses, damages or claims whatsoever, whether in contract, tort or otherwise, arising from use of or reliance upon, this document or any information contained herein.

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