1 / 26

Yellowhead Area Transmission System Development

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

dalton
Download Presentation

Yellowhead Area Transmission System Development

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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 Plan the Transmission System Arrange Access for Load and Generation Operate the Wholesale Electric Market Direct the Day to Day Operation of the Transmission System Created by Legislation: Public Interest Mandate Independent: No Commercial Interests Collaborative and Consultative Approach Transmission Regulated by AUC

  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

  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: • 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 • 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: • 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 • 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: • 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 • 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

  23. Potential Developments – Simplified Electrical Diagram

  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 stakeholder.relations@aeso.ca • Yellowhead Area Transmission Development enquiries: - Via email to stakeholder.relations@aeso.ca - Via telephone at 1-888-866-2959 - At our web site, http://www.aeso.ca/transmission/16784.html

More Related