Downtown Voltage Conversion Baker Lanes 2010
- Baker Lanes Update 400 500 Stanley Street 2011 [PDF - 527 KB]
- Baker Lanes Update 400 500 Victoria Street 2011 [PDF - 582 KB]
- Baker Lanes Update 400 Kootenay Street 2011 [PDF - 318 KB]
- February 23, 2011 Update Intended Startup Date 2011 [PDF - 75 KB]
- Project Directional Map [PDF - 1.4 MB]
- December 6 2010 Update [PDF - 722 KB]
- November 22 2010 Update [PDF - 1560 KB]
- November 5 2010 Update [PDF - 823 KB]
- October 29 2010 Update [PDF - 397 KB]
- October 19 2010 Update [PDF - 143 KB]
- October 13 2010 Update [PDF - 27 KB]
- September 13 2010 Update [PDF - 195 KB]
- Project Overview [PDF - 683 KB]
- Powerpoint Presentation July 26 2010 [PPT - 6 MB]
- Project Directional Map [PDF - 1.3 MB]
- This project consists of upgrading the electrical distribution system in the City of Nelson downtown core,
- The existing lane structures have overhead primary and secondary lines, and transformation mounted on poles and overhead platforms,
- These will be replaced with a system having overhead secondary lines, underground primary lines, and pad mounted transformers,
The primary supply voltage will be changed from 4 kV to 25 kV.
The Downtown Conversion is part of the Long Term Hydro T&D Upgrade plan:
- Transmission line upgrades (nearly complete),
- Voltage conversions
(Front St. 2009, Downtown 2010/11, Uphill 2012),
Rosemont Sub rebuild (2010/12),
- We are about mid way through this plan, completion of the Downtown Conversion and the Rosemont substation upgrade will move us close to completion.
- The new design will have fewer conductors running down the Lanes. This will allow:
- Single pole structures instead of two pole structures - provides more free space at ground level, and easier access to parking areas,
- Fewer wires and no transformers in the air will have a tidier appearance,
- Improved electrical service reliability in the downtown area,
- Improved lane way lighting,
- The upgraded distribution voltage provides better ability to serve new / changing loads downtown.
- New structures will be a single pole line with wire arranged vertically. (Existing arrangement uses two pole structures with a combination of horizontal and vertical wire configurations),
- Secondary circuits (customer voltage) will run overhead down the lanes. (Existing design also does this),
- Primary circuits (distribution system) will be in underground ducts running beneath the streets. (Existing system has these primary circuits overhead in the lanes),
- Transformers will be located on ground level islands where each island will feed roughly 1 block. (Existing system has multiple overhead transformer banks mounted on poles and platforms).
Cultural and Decorative Benefits
The CDC has proposed that they be tasked with decorating the transformer island with a cultural theme. This will include placing the history of Nelson Hydro on several of the transformers, and keeping several transformers for other cultural themes. We would like to install new lighting in the lanes with a historic theme, however, costs for the lamp fixtures similar to the style used on Baker street are exorbitant. We are continuing to look for an option that has a more historical theme than the existing fixtures but has reasonable cost.
- Construction in lanes and streets. This will mean inconveniences due to restricted parking, some limited access for deliveries, and typical construction site hazards and delays,
- Power outages during the switch over to the new system in 2011. These outages will be kept to a minimum, and will be of short duration,
- There will be a time where two sets of poles will obstruct the lanes. Both the existing and new structures must be in place in order to keep the conversion outage time to a minimum,
- Street paving and sidewalk repair will occur after the civil construction.
- 2009 /10: Acquire Materials
- Aug 2010: Install New Poles in Lanes
- Sep 2010: Commence Civil Works (ducts, transformer pads)
- Spring 2011: Electrical Installation (underground and overhead lines)
- Summer 2011: Move customers over to new system
- Fall 2011: Telus and Shaw transfer to new poles
- 2011/12: Remove old infrastructure (two pole structures, & wire)