N-1CI C0086325 – Maritime Launch Services - Application - Redacted
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DESCRIPTION: This project involves rebuilding and extending the existing 24C distribution circuit in Canso, Nova Scotia. The work includes upgrading approximately 1.5km of existing three-phase line and constructing approximately 4.7km of n...
AI summary The project involves rebuilding and extending the 24C distribution circuit in Canso, Nova Scotia, to serve Maritime Launch Services. The work includes upgrading and constructing new three-phase distribution lines and related infrastructure, with costs paid by Maritime Launch Services according to NS Power's standard practices.
JUSTIFICATION: Justification Criteria: Distribution System Sub Criteria: Requirement to Serve Why do this project? Maritime Launch Services is building a spaceport in Canso and requires electrical service to support its operations. To meet...
AI summary Maritime Launch Services is constructing a spaceport in Canso and requires 3 MVA of electrical service. A new 5 km line extension will be installed from the 24C-442 feeder to support the spaceport, enhance system flexibility, and improve reliability in the Town of Canso.
Why do this project this way? NS Power completed a Load Customer System Impact Study (please refer to Partially Confidential Attachment 1) to identify the most effective method to deliver power to the launchpad. There are six alternative s...
AI summary NS Power conducted a Load Customer System Impact Study to determine the most cost-effective and efficient method to deliver power to the launchpad, identifying six alternatives. The selected option was chosen for its cost-effectiveness, efficiency, and flexibility for future expansion.
voltage, long distances) from power distribution (short distance, lower voltage connections to retail customers), the principles of estimating these elements are similar; i.e., the RP applies to both. The main physical power transmission l...
AI summary The text discusses the physical and logistical challenges of power transmission line installation, including material costs, environmental considerations, stakeholder consultation, and the complexities of installation in various terrains and locations.
SUMMARY This report presents the results of a Load Impact Study (LIS) assessing the distribution supply options for the proposed MLS Spaceport facility in the Town of Canso. Several alternative solutions were explored during this assessmen...
AI summary This report outlines the results of a Load Impact Study for the proposed MLS Spaceport facility in Canso, Nova Scotia. It presents the recommended distribution supply solution, required modifications, cost estimates, and conditions for proceeding with the project, including the need for a Materiality Study if load details change.
3.0 SYSTEM INFORMATION Table 2: Substation Loading Overview Substation Transformer Feeders Winter Peak 19C-Canso Town 19C-T51 203, 204 1.4MVA 24C-Dickie Brook Hydro 24C-T54 442, 443 6.3MVA Table 3: Feeder Loading Overview Transformer Feede...
AI summary The document presents tables outlining substation loading, feeder loading, and transformer data, providing technical details about the electrical infrastructure in Nova Scotia. It includes information on transformers, their ratings, ages, and loading capacities during winter peak periods.
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 or tap changer rating ar...
AI summary NSPI outlines transformer and feeder loading limits, specifying that distribution transformers can be loaded up to 110% in summer and 133% in winter, while system power transformers are limited to 100% in summer and 110% in winter. Distribution feeder capacity is capped at 325 Amps, though exceptions may apply for dedicated feeders with proper design.
4.4 24C-442 Feeder Loading The load on 24C-442 peaks in the winter at 47 Amps (2 MVA), which remains below the 325 Amp overload criterion. However, the addition of a 3 MVA demand load at the end of a 45-50 kilometer feeder creates voltage...
AI summary The load on feeder 24C-442 peaks at 47 Amps (2 MVA) in winter, remaining below the 325 Amp overload criterion. However, adding a 3 MVA demand load at the end of a 45-50 kilometer feeder will cause voltage issues, necessitating voltage regulators.
4.6 Voltage Flicker, Dips, and Unbalance Voltage flicker and voltage dips refer to transient or periodic variations of voltage which cause objectionable lamp flicker and/or disturbances to connected equipment. Inrush current during startin...
AI summary This section discusses voltage flicker and voltage dips, which are variations in voltage that can cause disturbances to connected equipment. NSPI has established guidelines for the Distribution System regarding these issues, as outlined in Table 5.
5.4 24C-442 Supply from Hazel Hill - 1. Purchase and install electronic recloser and control - 2. Upgrade 840 meters of 1-phase line to 3-phase and reconductor the existing phase with 336 ASC - 3. Extend 24C-442 1.9 kilometers (approx.) al...
AI summary The text outlines a series of infrastructure upgrades for the 24C-442 supply line from Hazel Hill, including line upgrades, extensions, and the installation of voltage regulators and a capacitor bank. These measures are necessary to support the new MLS Spaceport load facility and maintain adequate voltage levels based on load flow analysis.
5.6 Feeder from New 25 kV Source at 19C or New Substation Location In order to facilitate this solution, the following modifications are required: - 1. Purchase and install a 138/69-25 kV 7.5/10 MVA transformer with an OLTC at the 19C subs...
AI summary The text outlines modifications required to facilitate a new 25 kV feeder at the 19C substation or a new location, including transformer installation, infrastructure upgrades, and line extensions. It also notes the expected load on the new feeder and transformer.
6.1 Load Flow Results Based on the load flow analysis, the 24C-442 feeder will not become overloaded based on the 3 MVA MLS Spaceport load addition. The 24C-T54 transformer is not expected to become overloaded based on the 3 MVA MLS Spacep...
AI summary The load flow analysis indicates that the 24C-442 feeder will not become overloaded with the addition of the 3 MVA MLS Spaceport load. However, the 24C-T54 transformer is expected to reach 127% of its top rating during peak load conditions if there is no hydro generation.
6.3 Feeder Voltage Imbalance The voltage imbalance at the MLS Spaceport site is shown for circuit 24C-442 after the proposed circuit modifications at peak load conditions in Table 9 below.
AI summary This section discusses the voltage imbalance at the MLS Spaceport site for circuit 24C-442 after proposed modifications at peak load conditions, as presented in Table 9.
MLS Spaceport – 3 MVA Load Impact Study Table 9: Voltage Imbalance During Winter Peak Loading After Proposed Modifications Supply Feeder Voltage Imbalance at the MLS Spaceport Site Phase Voltage After Modifications Voltage Average Imbalanc...
AI summary This section of the document presents a table showing voltage imbalance at the MLS Spaceport site after proposed modifications during winter peak loading. It also references a section on system short circuit levels, indicating a focus on electrical system performance and reliability.
The NSPI design criteria for maximum fault capacity (three-phase, symmetrical) is 346 MVA for the 25 kV Distribution System (8000 A) and 195 MVA for the 12.5 kV Distribution System (9000 A). New equipment added to the system must be design...
AI summary The document outlines the NSPI design criteria for maximum fault capacity on the 25 kV and 12.5 kV Distribution Systems, specifying 346 MVA and 195 MVA respectively. It notes that new equipment must be designed to withstand these fault levels, and Table 10 provides short circuit data at the MLS Spaceport site after proposed modifications.