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Yellowhead Area Transmission System Development. Ata Rehman, P.Eng Manager, South/North System Planning February / March 2009. Outline. Overview of the AESO Transmission system planning process Transmission Development in the Yellowhead area Overview of existing system - PowerPoint PPT Presentation
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Reliable Power
Reliable Markets
Reliable People
Yellowhead Area Transmission System Development Ata Rehman, P.Eng
Manager, South/North System Planning
February / March 2009
2
Outline
• Overview of the AESO
• Transmission system planning process
• Transmission Development in the Yellowhead area
– Overview of existing system
– Need for development
– Development Alternatives
– Comparison and Preliminary Recommendation
• Next steps
3
AESO: Our role and context
Operate the Wholesale
Electric Market
Direct the Day to Day Operation of the Transmission System
Plan the Transmission System
Arrange Access for Load and Generation
Created by Legislation: Public Interest Mandate
Independent: No Commercial Interests
Transmission Regulated by AUC
Collaborative and Consultative Approach
4
The Flow of Power
5
Roles of AESO & TFO
• Alberta Electric System Operator (AESO)
- Preparation and submission of Needs Identification Document to Alberta Utilities Commission (AUC)
• Transmission Facility Owner (TFO)
- Responsible for design, route selection and building the facilities
6
Transmission Planning Process: Role of AESO
• AESO
- Reviews Load/Generator interconnection request
- Determines the need for transmission development
- Develops alternatives
- Conducts necessary studies
- Undertakes Participant Involvement Program (stakeholder engagement)
7
Transmission Planning Process: Role of AESO (cont.)
• Planning Considerations
- Social
- Technical
- Economic
8
Transmission 2- Stage Process
• Transmission Facility Owner (TFO)- Detailed routing and specific siting
- Detailed engineering
- Stakeholder engagement process (can be separate from AESO process or combined)
- Submits a Facilities Application to the Alberta Utilities Commission
(AUC) for approval
9
Need for System Reinforcement
• The project area covers the following AESO planning Areas:
- Wabamun
- Drayton Valley; and
- Edson/Hinton
• Need is driven by the following factors:- Transmission Facilities reaching the end of their service life
Half century old (49-54 years)
- The system is not adequate to serve projected demand
Load is projected to grow from 564 MW to 633 MW in 10 years
Loading and voltage issues
10
Project Area Location
11
Existing Transmission System Map
12
Existing System Simplified Electrical Diagram
To Carvel432SEntwistle
235S
Moon Lake131S
544L537L
Easy Ford249S
Lodgepole61S
Esso west Pembina
359S
Cynthia178S
Edson58S
Bickerdike39S
202L
202L
20
2L
836L
835L
Buck Lake454S
Keystone384S
Violet Grove283S
Wabamun2739S
Sundance 310P
Wabamun19S
Whitewood Mine292S
T.M.P.L. Gainford
165S
156L
124LT.M.P.L. Niton228S
744L 744L
79
9L
799L South Mayerthorpe
443S
Sagitawah77S
973L974L
989L
919L
to Louise Creek809S
to Whitecourt Industrial
364S
To Blue Ridge Lumber701S
to Benalto 17S
Cold Creek602S
27 MVAr
Brazeau62S
902L
133L
904L
Pembina Pipeline3080S
To Millar Western
484S
to Alberta
Newsprint122S
Keephills320P
234L
to Sundance
310P
to Sundance
310P
to Bickerdike
39S
to Sagitawah
77S
PetroCanadaBrazeau River
489S
Amoco Brazeau358S
ToNorth calder
37S905L
Onoway352S
N.O.N.O.
N.O.
123L/104L
92
6L
92
2L
90
3L
19
0L
1202L1203L767L
834L
896L
919L989L
809L(N.O)
908L909L
913L
Pinedale207S
890L
913L
913L
ToMitsue 732S
P.R.O.P.L. Glenevis
442S
Lac La Nonne994S
ToFort Assiniboine
234S
ToWestlock
438S
West Pembina477S
Elk River445S Brazeau
Outlet works294S
801L
844L
841L
828L
North Barrhead
69S
913L104L
104L
12
9L
12
9L
Drayton Valley46S
Mountain Coalbed
411S
Watson Creek104S
Manalta CoalGregg River
476S
Cardinal River 302S
Cadomin 983S
740L
762L
Coal Valley527S
Gulf Robb414S
Coal Spur426S
Fickle Lake406S
Dalehurst975S
501L
745L745AL
615L
854L
To Fox CreekA741S
7L199
199L
720L
Marlboro348S
Benbow397S
Chevron Kaybob551S
Kaybob346S
864L
854L
854AL
White Court268S
Chevron Knight355S
N.O
Cheviot 101S
743L
847L
995L
Paddle River106S
Thermal Plant
240 kV
138 kV
69 kV Capacitor bank
Hydro
Decommision (proposed)
Proposed UpgradesDecommision (Approved)
13
Wabamun Area – 104L Upgrade
• 104L is a 67 km 69 kV line from Onoway substation to Barrhead Substation
• Supplies Onoway, Glenevis, and Lac La Nonne substations
Issues:
• Line has reached the end of its service life. Constructed in 1955 (54 years old)
• Line and substations are not adequate to serve growing load
• Poor voltage performance
• Below average reliability
14
Wabamun Area – 104L Upgrade
Alternatives:
1. Alternative 1 - Rebuild 104L and upgrade substations
• Rebuilding 67 km of 104L
• Upgrading 138/69 kV capacity at Barrhead 69S
• Addition of capacitor banks at Onoway
2. Alternative 2 - Build a new 240 kV supply substation (Cherhill)
• New 240/25 kV substation somewhere north of the Alberta Beach area
• Lac La Nonne and Glenevis substations will be supplied through the distribution system
• Decommission 104L and associated substations
15
Wabamun Area – 104L Upgrade
Comparison of Alternatives
• Alternative 2 appears more favourable
More robust
Addresses supply substation capacity issues (Onoway, Lac La Nonne)
Lower cost
Lower land impact
16
Drayton Valley Area – 129L/537L/544L Upgrade and reconfiguration
• 129L, 537L and 544L are 69 kV lines between Entwistle and Lodgepole substations
• System supplies Drayton Valley, Easyford, Pembina Pipelines and Entwistle substations
Issues:
• Lines and associated substation facilities are reaching the end of their service life (49 to 54 years old)
• Line and substations are not adequate to serve growing load
• Below average reliability
• Lack of adequate voltage support
17
Drayton Valley Area – 129L/537L/544L Upgrade and reconfiguration
Alternatives:
1. Alternative 1 - Rebuild lines and upgrade substations (like-for-like)
• Rebuilding a total of up to 93 km of 69 kV line
• Upgrade a number of substation facilities
• Addition of three capacitor banks
2. Alternative 2 – Upgrade 129L to 138 kV and reconfigure system
• Rebuilding 129L to 138 kV standards (47 km)
• Easyford and Pembina Pipeline substations will be supplied through the distribution system
• Decommission 537L, 544L and associated substations
• Addition of three capacitor banks
18
Drayton Valley Area – 129L/537L/544L Upgrade and reconfiguration
Comparison of Alternatives
Alternative 2 appears more favourable
Higher capacity for long term growth
Improved system performance
Lower cost
Lower land impact
19
Hinton/Edson Area – 138 kV Capacity Upgrade
Issues:
• 745L does not have adequate capacity to serve area load during outages
• Area lacks adequate voltage support
• 745L is 54 years old and approaching end of service life
• Uses a sub-standard, low capacity conductor (3/0)
20
Hinton/Edson Area – 138 kV Capacity Upgrade
Alternatives:
1. Alternative 1 - Rebuild and reconfigure 745L
• Rebuild 745L (80 km) with higher capacity conductors (477 kcmil)
• Construct 8 km new double circuit 138 kV line from Bikerdike substation into 745L
• Add one capacitor bank at Cold Creek Substation
2. Alternative 2 – Build a new 138 kV line and decommission 745L
• Build a new single circuit 138 kV line from 740L near Gulf Robb tap to Cold Creek Substation (45 km)
• Build a new switching station near the Gulf Robb tap
• Construct 8 km new single circuit 138 kV line between Bikerdike to Edson substations
• Upgrade 745L from Cold Creek to Dalehurst tap and decommission the rest
• Add one capacitor bank at Cold Creek Substation
21
Hinton/Edson Area – 138 kV Capacity Upgrade
Comparison of Alternatives
Alternative 1 appears more favourable:
√ Better access for maintenance and quick restoration
√ Lower cost
√ No new right of way
√ Less land impact
22
Summary of Potential Developments & Cost Estimates
Description Cost (millions, 2008$)
Development A: Wabamun Area
Construct new Cherhill 240/25 kV (POD) Substation $19.83
Development B: Drayton Valley Area
Upgrade 69 kV system in the Drayton Valley area to 138 kV $32.38
Install one (1) 27 MVAr Capacitor Bank at Cynthia 178S $1.96
Install one (1) 27 MVAr Capacitor Bank at Amoco Brazeau 358S $1.96
Install one (1) 27 MVAr Capacitor Bank at Brazeau 62S $1.96
Development C: Hinton/Edson Area
Rebuild and reconfigure 745L Edson 58S to Cold Creek 602S $27.71
Install one (1) 27 MVAr Capacitor Bank at Cold Creek 602S $1.96
Total Cost (2008$) $87.76
- The total cost of additional potential distribution-related work associated with the transmission development is $17.60 million (2008$).
23
Potential Developments – Simplified Electrical Diagram
Entwistle235S
Moon Lake131S
544L537L
Easy Ford249S
Lodgepole61S
Esso west Pembina
359S
Cynthia178S
Edson58S
Bickerdike39S
202L
202L
202L
836L835L
Buck Lake454S
Keystone384S
Violet Grove283S
Wabamun2739S
Sundance 310P
Wabamun19S
Whitewood Mine292S
T.M.P.L. Gainford
165S
156L
124LT.M.P.L. Niton228S
744L 744L
799L
799L South Mayerthorpe
443S
Sagitawah77S
973L974L
989L
919L
to Louise Creek809S
to Whitecourt Industrial
364S
To Blue Ridge Lumber701S
to Benalto 17S
Cold Creek602S
27 MVAr
Brazeau62S
902L
133L
904L
Pembina Pipeline3080S
To Millar Western
484S
to Alberta
Newsprint122S
Keephills320P
234L
to Sundance
310P
to Sundance
310P
to Bickerdike
39S
to Sagitawah
77S
PetroCanadaBrazeau River
489S
Amoco Brazeau358S
905L to North calder
37S
New Cherhill POD 240/25 kV
N.O.N.O.
N.O.
926L
922L
903L
190L
1202L1203L767L
834L
896L to Carvel432S
919L989L
809L(N.O)
908L909L
913L
Pinedale207S
890L
913L
ToMitsue 732S
ToFort Assiniboine
234S
ToWestlock
438S
West Pembina477S
Elk River445S
Brazeau Outlet works
294S
801L
844L
841L
828L
North Barrhead
69S
913L
129L
129L
Mountain Coalbed
411S
Watson Creek104S
Manalta CoalGregg River
476S
Cardinal River 302S
Cadomin 983S
740L
762L
Coal Valley527S
Gulf Robb414S
Coal Spur426S
Fickle Lake406S
Dalehurst975S
501L
745L745AL
615L
854L
To Fox CreekA741S
7L199
199L
720L
Marlboro348S
Benbow397S
Chevron Kaybob551S
Kaybob346S
864L
854L
854AL
White Court268S
Chevron Knight355S
N.O
Cheviot 101S
743L
847L
995L
Paddle River106S
Onoway352S
123L/104L
Lac La Nonne994S
P.R.O.P.L. Glenevis
442S
Thermal Plant
240 kV
138 kV
69 kV Capacitor bank
Hydro
Decommision (proposed)
Proposed UpgradesDecommision (Approved)
Note: This is an electrical single line diagram and not geographically representative.
24
Stakeholder Engagement Process
• AESO meeting with and/or sending information to:
- 47,018 residents and occupants by postal code
- Municipalities in the study area
- Provincial representatives
- First Nations and Métis Settlements• Letter with background information requesting feedback delivered to residences in the area
via a postal code mail out• Newspaper advertisements requesting feedback in:
- Stony Plain Reporter
- Spruce Grove Examiner
- Barrhead Leader
- Onoway Community Voice
- Wabamun Community Voice
- Edson Leader
- Hinton Parklander
- Drayton Valley Western Review
• Project information on AESO website requesting feedback
25
Next Steps
• AESO- Prepares Needs Identification Document (NID)
- AESO to file NID with the Alberta Utilities Commission (AUC) for approval (early Q2/2009)
• Transmission Facility Owner (TFO)- ATCO directed by the AESO to develop a Facilities Application for
detailed engineering, siting, and routing for facilities
- Facilities Application to be developed with further stakeholder engagement and submitted to the AUC for approval
26
Contact us
• General AESO Enquiries
- On our web site, http://www.aeso.ca
- Via email to [email protected]
• Yellowhead Area Transmission Development enquiries:
- Via email to [email protected]
- Via telephone at 1-888-866-2959
- At our web site, http://www.aeso.ca/transmission/16784.html