Topic:"Infrastructure Planning" in M13084

DESCRIPTION: In order to accommodate the anticipated load growth and provision of a secondary supply from the Cape Breton Regional Hospital redevelopment, NS Power must undertake a rebuild and reconductoring of current infrastructure (at t...

AI summary NS Power is required to rebuild and reconductoring distribution lines in Sydney to accommodate load growth and provide a secondary supply to the Cape Breton Regional Hospital. The project involves installing new poles and conductor, with costs to be paid by the hospital.

Why do this project now? The Cape Breton Regional Hospital redevelopment project is progressing with the construction of the Cape Breton Cancer Centre, an Energy Centre, and a Clinical Services Building. The resulting anticipated increase...

AI summary The Cape Breton Regional Hospital redevelopment project, including the Cape Breton Cancer Centre, Energy Centre, and Clinical Services Building, is progressing. The anticipated increase in load and the need to ensure reliable service to critical customers require the project to be completed before Q3 2027.

Why do this project this way? Three alternative solutions were evaluated in a System Impact Study (please refer to Attachment 1). Rebuilding the double-circuit line and reconductoring the circuit along Reservoir Road was identified as the...

AI summary The document discusses three alternative solutions for a project, with rebuilding the double-circuit line and reconductoring along Reservoir Road identified as the least-cost option that meets capacity, reliability, and contingency requirements while minimizing additional infrastructure investment.

Document No: XXX-XX-XXXX-XXXX Project Cost Estimate Input Checklist and Maturity Matrix Transmission Line Infrastructure Required fields: Estimate Classification Project Name: 4S-332 George St Rebuild and Reconfiguration Started or Prelimi...

AI summary This document outlines a checklist and maturity matrix for estimating the cost of a transmission line infrastructure project, specifically the 4S-332 George St Rebuild and Reconfiguration. It details the project's scope, location, requirements, technology selection, and planning considerations, with varying levels of definition and completeness.

Inclusions For the purposes of this document, the term power transmission line infrastructure industries is assumed to include greenfield or brownfield sites for overhead, buried and submarian transmission of electrical power in the infras...

AI summary This section defines power transmission line infrastructure industries, excluding power supply, distribution, generation, and substations. It emphasizes the role of infrastructure in supporting commerce and systems, referencing the Construction industry institute's definition from the Project Definition Rating Index for Infrastructure Projects.

Secondary supply: 4S-332 reconfigurations: - 5. Reconductor Reservoir Road to the CBRH cable termination from 2/0 ACSR to 336 ASC. - 6. Close switch D3S22974 to Supply CBRH via 4S-332. - 7. Replace the existing double circuit poles along G...

AI summary The document details a series of electrical infrastructure modifications related to the secondary supply for 4S-332, including reconductor replacements, switch closures, pole replacements, and offloading procedures. The estimated cost for these changes is $1,226,500.

REDACTED CI C0085185 Attachment 1 Page 3 of 60 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Cape Breton Regional Hospital (CBRH) Load Impact Study In addition to the work described above, a review of coordination will be required by Eastern...

AI summary The document discusses the need for coordination in the Cape Breton Regional Hospital Load Impact Study, emphasizing the importance of identifying load changes and conducting Materiality Studies. It outlines that NSPI will not proceed with network upgrades until customer plans are submitted to the Electrical Inspection Authority.

Cape Breton Regional Hospital (CBRH) Load Impact Study

AI summary The document text references a Load Impact Study conducted for the Cape Breton Regional Hospital (CBRH). This study likely examines the impact of the hospital's energy load on the local power grid and may be relevant to regulatory considerations related to energy use and infrastructure planning.

2.1 Transmission The 111S-Prime Brook substation is fed via the 138 kV line L6539 and is located between the 2S-Victoria Junction substation and the 3S-Gannon Road substation. The 11S-Keltic Drive substation is fed from the 69 kV line L557...

AI summary The text describes the transmission infrastructure in the Sydney Area, including various substations and their feeding lines, and mentions a Load Impact Study. It provides details on the electrical connections between different substations.

An additional 3.7 MW of load will be added to the existing CBRH facility, raising the total hospital peak load to 6.9MVA. The Cape Breton Regional Hospital will require a primary source and a secondary source, both capable of supplying the...

AI summary The Cape Breton Regional Hospital will require an additional 3.7 MW of load, increasing the total peak load to 6.9MVA. Two power sources from different substations are needed for redundancy, with potential sites at 111S-Prime Brook, 4S-Townsend Street, and 6S-Terrace Street, though the latter requires additional infrastructure.

5.1 Alternative 1: Primary supply via 111S-311; Secondary supply via 111S-312 Alternative 1 is provided for comparison purposes only as it does not meet the CBRH criteria for two separate substation sources. Circuit 111S-311 currently supp...

AI summary Alternative 1 proposes using two circuits, 111S-311 and 111S-312, to supply CBRH, with each circuit capable of handling the full load if the other fails. However, this alternative does not meet the CBRH criteria for separate substation sources and is provided for comparison only.

Primary supply : 111S-311 reconfigurations: - 1. Reconductor the 1km section of 3ph 2/0 AASC on Terry Way and Mullers Ln to 336 ASC. - 2. Install a new normally open point on 111S-311 on George St between Rotary Dr and Edgar St. - 3. Close...

AI summary The document outlines four primary supply reconfiguration tasks for the 111S-311 line, including reconductoring sections of the line and installing a new switch to optimize its operation.

REDACTED CI C0085185 Attachment 1 Page 18 of 60 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Cape Breton Regional Hospital (CBRH) Load Impact Study This solution requires limited capital investment. It is ideal from a transformer loading st...

AI summary The proposed solution for the Cape Breton Regional Hospital involves minimal capital investment and is ideal for transformer loading, as the existing 111S-T61 circuit already supplies the hospital. However, the solution is less reliable because both the primary and secondary supplies would be fed from the same substation transformer, increasing the risk of a complete outage if 111S substation fails.

Primary supply: 111S-311 reconfiguration: - 1. Reconductor the .65km section of 3ph 2/0 AASC on Terry Way to 336 ASC. - 2. Reconductor the .2km section of 3ph 2/0 AASC on Weatherbee Road to 336 ASC. - 3. Extend 111S-311 to new customer cab...

AI summary The document outlines the reconfiguration of the 111S-311 primary supply line, including reconductoring sections on Terry Way and Weatherbee Road, extending the line to a new customer pole, and modifying pole configurations to isolate circuits and prevent single contingency impacts on power supplies to CBRH.

6.2.1 Feeder 111S-311 Feeder 111S-311 experiences a typical winter peak loading of 168 A (3.6 MVA), which is well below the 325 A overload criterion. This feeder currently carries the Cape Breton Regional Hospital load. The main three phas...

AI summary Feeder 111S-311 has a winter peak load of 168 A (3.6 MVA), below the 325 A overload limit. It currently serves the Cape Breton Regional Hospital. To meet the hospital's full 6.9 MVA demand, sections of 2/0 AASC conductor must be replaced with 336 ASC conductor.

6.2.4 Feeder 4S-332 Feeder 4S-332 experiences a typical winter peak loading of 100 A (2.2 MVA), which is well below the 325 A overload criterion. The circuit has capacity to offload other circuits and shares tie-points with 111S-311, 4S-32...

AI summary Feeder 4S-332 has a low winter peak load and sufficient capacity to offload other circuits. To use it as a secondary supply to the hospital, the vertical separation between 4S-332 and 4S-321 must increase from 4 feet to 8 feet, requiring replacement of double circuit poles along George Street.

Secondary supply: 4S-332 reconfigurations: - 5. Reconductor Reservoir Road to the CBRH cable termination from 2/0 ACSR to 336 ASC. - 6. Close switch D3S22974 to Supply CBRH via 4S-332. - 7. Replace the existing double circuit poles along G...

AI summary This document outlines the proposed reconfiguration of the secondary supply system, including reconductoring, pole replacements, and flying tap installations. It also notes the estimated costs and the need for coordination to ensure proper protective device sizing. The report mentions alternative configurations based on substation requirements.

Preliminary Assessment Propos eed 1 2 7 M W D etrik utio n Co nnec tad I oad at y As aı 7 Nova S PC An Em OWER era Company Prep. By: Prep. By: NSPI 7-Oct-20 Page 1 of 4 Application Subm nitted E CBRH Load Customer General Location: Sydne S...

AI summary The document presents a preliminary assessment of a power application related to a commercial load connection at a regional hospital in Sydney, Nova Scotia. It includes details about the transformer, substation, and distribution system, as well as cost estimates for infrastructure upgrades.

Appendix D CBRH Redevelopment Project Site Plan

AI summary Appendix D presents the CBRH Redevelopment Project Site Plan, which outlines the proposed development for the CBRH area. The document includes details about the site layout, infrastructure planning, and potential impacts of the redevelopment.

Appendix E Substation Pictures

AI summary Appendix E of the document contains substation pictures, which may be relevant for infrastructure planning and grid modernization efforts.