Topic:"Distribution Planning" in M13084

CI Number: C0085185 Title: 4S-332 George St Rebuild and Reconfiguration Start Date: 2026/10 In-Service Date: 2027/06 Final Cost Date: 2027/12 Function: Distribution Forecast Amount: $0

AI summary This document outlines a capital item (CI) related to the rebuild and reconfiguration of the 4S-332 George St distribution facility, with a start date of 2026/10, an in-service date of 2027/06, and a final cost date of 2027/12. The forecast amount for this project is $0.

Why do this project? The Cape Breton Regional Hospital redevelopment project will increase the anticipated peak load served from 3.2 MVA to 6.9MVA. To accommodate this significant load growth and maintain reliable service to critical commu...

AI summary The Cape Breton Regional Hospital redevelopment project will increase peak load from 3.2 MVA to 6.9 MVA, necessitating upgrades to the electrical infrastructure to ensure reliability and meet construction standards. This includes replacing existing poles and increasing local system capacity.

Document No: XXX-XX-XXXX-XXXX Start-up & Commissioning Plan Preliminary (P) NR P P/D H. Studies Routing Options Defined (D) P P D D D Topography & Bathymetry Not Applicable (NA) Environmental Impact/Sustainability Assessment Not Applicable...

AI summary The document outlines the status of various technical deliverables and studies for a project, indicating the completeness or preliminary status of items such as conductor design, route mapping, and design specifications. Several sections are marked as not applicable, and some tasks are in the started or preliminary stages.

ultation must be advanced (sometimes requiring agreements with local populations with rights), and appropriate land and ROW must be acquired which creates unique scheduling as well as cost challenges. For the purpose of estimate classifica...

AI summary The text discusses the complexities involved in defining the scope of power transmission projects, including the need to acquire land and rights-of-way, the variability in conductor and structure materials, and the impact of site-specific conditions on design and execution. It also notes the similarities between substation projects and process plant projects in terms of design characteristics.

EXECUTIVE SUMMARY This report presents the results of a Load Impact Study (LIS) for the 6.9MVA Cape Breton Redevelopment Project located in Sydney, Nova Scotia. There are three alternatives included in this report for sourcing the 12.5 kV...

AI summary This report outlines a Load Impact Study for the 6.9MVA Cape Breton Redevelopment Project in Sydney, Nova Scotia. It presents three alternatives for sourcing power to the Cape Breton Regional Hospital, with NSPI responsible for primary supply upgrades and CBRH for secondary supply upgrades. Alternative 2 is recommended, involving specific circuit modifications.

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

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 the configuration at Mullers Lane to prevent single-point failures affecting both primary and secondary supplies to CBRH.

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.

1.0 SCOPE This study was initiated by Eastern Regional Engineering and Key Accounts to investigate solutions to accommodate the redevelopment of the Cape Breton Regional Hospital and the associated increase in hospital load from 3.2 MVA to...

AI summary This study, initiated by Eastern Regional Engineering and Key Accounts, investigates solutions to accommodate the redevelopment of the Cape Breton Regional Hospital and the associated increase in electrical load. It focuses on feeders from specific substations and includes analysis of circuit capacity and power quality over a 15-year period.

Cape Breton Regional Hospital (CBRH) Load Impact Study Table 2: Sydney Area Substation Feeders Overview Substation Feeder Winter Peak 111S-311 168A 3.6 MVA 111S-Prime 111S-312 107 A 2.3 MVA 13.4 MVA Brook 111S-313 174 A 3.8 MVA 111S-314 17...

AI summary This section of the Cape Breton Regional Hospital (CBRH) Load Impact Study presents an overview of Sydney Area Substation Feeders and Distribution Substation Transformers, including details on winter peak loads, transformer specifications, and ages.

4.8 Fault Levels, Fault Clearing and Restoration The maximum design fault level of the 12.5 kV system is 9000 A. The maximum design fault level of the 25 kV system is 8000 A. Actual fault levels will vary from substation to substation and...

AI summary The document outlines fault levels, fault clearing, and restoration processes for Nova Scotia Power's 12.5 kV and 25 kV systems. It describes how protective devices such as reclosers and circuit breakers detect and clear short circuits, and how restoration is achieved through reclosing. Fault clearing times are generally less than 1.0 second.

Secondary supply : 111S-312 reconfigurations: - 5. Double circuit Terry Way between Ferguson Rd and Weatherbee Rd using 3 phase 336 ASC. - 6. Open switch D3A22932 on Ferguson Dr to disconnect 111S-312 from downstream load. - 7. Close switc...

AI summary This section outlines a series of electrical infrastructure modifications related to the 111S-312 reconfiguration, including the installation of a double circuit line, switch operations, and reconductor work on Weatherbee Rd.

5.2 Alternative 2: Main supply via 111S-311 and Secondary supply via 4S-332 Feeder reconfigurations and circuit extensions can be completed to supply the Cape Breton Regional Hospital load from 111S-311 and 4S-332. Under normal operations,...

AI summary Alternative 2 proposes supplying the Cape Breton Regional Hospital from two circuits, 111S-311 and 4S-332, with each circuit capable of handling the full load if the other fails. Upgrades and modifications are required to implement this solution, as detailed in Figures 9 through 11.

Primary supply: 111S-311 reconfigurations: - 1. Extend 111S-311 on Weatherbee Rd to the customer duct bank to supply the CBRH load. - 2. Reconductor 0.85km of 2/0 AASC sections of 111S-311 along Terry Way and Weatherbee Rd to 336 ASC. - 3....

AI summary The document outlines three primary supply reconfiguration tasks for 111S-311, including extending the line to a customer duct bank, reconductoring a section of the line, and installing a new normally open point on Muller Ln.

Alternative 2: Feeder Loading after Reconfiguration Feeder Normal CBRH Load (A) Full CBRH Load (A) 6S-311 199 380 111S-311 170 338 REDACTED CI C0085185 Attachment 1 Page 27 of 60 REDACTED (CONFIDENTIAL INFORMATION REMOVED)

AI summary This table presents feeder loading data for Alternative 2 after reconfiguration, showing the normal and full CBRH load in amperes for two specific feeders, 6S-311 and 111S-311.

6.1 Transformer Loading NSPI will load distribution load serving substation transformers to 110% of top nameplate rating (summer) and 133% (winter) based on normal cyclic daily loading, unless other limiting factors such as bushing rating...

AI summary NSPI plans to load distribution transformers up to 110% in summer and 133% in winter, with system transformers limited to 100% and 110% respectively. Two supply points for the Cape Breton Regional Hospital are analyzed in the report.

6.1.1 111S-T61 Based on the available monthly load check data and PI data, the transformer 111S-T61 supplies a peak winter load of approximately 13.4 MVA and is not at risk of being overloaded within the study window (prior to 2035). The p...

AI summary Transformer 111S-T61 currently supplies a peak winter load of 13.4 MVA and has a top nameplate rating of 25 MVA, providing ample capacity to handle expected loads through 2035, which is projected to reach 13.74 MVA.

6.1.2 4S-T53 Based on the available monthly load check data and PI data, the transformer 4S-T53 supplies a peak winter load of approximately 9.2 MVA and is not at risk of being overloaded within the study window (prior to 2035). The peak e...

AI summary The transformer 4S-T53 currently supplies a peak winter load of 9.2 MVA and is not at risk of overload before 2035. Its peak expected load in 2035 is 10 MVA, and it has a top nameplate rating of 22.4 MVA, allowing for an available capacity of up to 30 MVA during winter peak periods.

REDACTED CI C0085185 Attachment 1 Page 43 of 60 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Cape Breton Regional Hospital (CBRH) Load Impact Study Any change in the studied load and the plans submitted to the Electrical Inspection Authorit...

AI summary The document discusses the Load Impact Study for the Cape Breton Regional Hospital, emphasizing the need to update the study if there are changes in load, and outlines NSPI's policy on initiating network upgrades based on customer-submitted plans to the Electrical Inspection Authority.

Preliminary Assessment Propos eed 1 2 7 M W D etrik utio n Co nnec tad I oad at Other Upara aues/S Sub-station Upgrades $0 factor correction, etc as determined by the SIS at later time. les - 0 racio System Impact Study (SIS) Required? Sub...

AI summary The preliminary assessment outlines various sub-station upgrades and modifications, including the need for a System Impact Study (SIS) and factors such as power factor correction. The table indicates that some upgrades are not required, while others are under consideration.