Topic:"System Reliability" in M13084

4.10 Reliability The Distribution System feeder circuits typically experience several outages per year due to exposure to human and natural factors. These outages may be brief or may extend to many hours. In addition to these forced outage...

AI summary The Distribution System feeder circuits experience outages annually due to human and natural factors, with some outages lasting many hours. Planned maintenance also requires temporary removal of supply feeders from service.

6.7 System Reliability NSPI tracks the reliability of each distribution feeder in NS, including the number of Customer Interruptions (CI) and Customer Hours of Interruption (CHI). These are utilized to determine the CKAIFI and CKAIDI param...

AI summary NSPI tracks the reliability of distribution feeders in Nova Scotia, using metrics like Customer Interruptions (CI) and Customer Hours of Interruption (CHI) to calculate CKAIFI and CKAIDI. The text provides reliability data for specific circuits over the past five years, noting that data for 111S circuits only exists from 2020 onward due to their commissioning date.

- CKAIFI = Sum of (Outage) Customer Interruptions / Total number of customers - CKAIDI = Sum of (Outage) Customer Hours of Interruptions / Total number of customers - Event Day = Significant, Major, and Extreme Event Days as defined by IEE...

AI summary The text defines two metrics, CKAIFI and CKAIDI, which measure customer interruptions and outage hours, respectively, relative to the total number of customers. It also references the IEEE 2.5β methodology for defining event days based on cumulative outage hours.

Cape Breton Regional Hospital (CBRH) Load Impact Study Alternative 3 Secondary Supply - 6S-311 4 Refurbish 6S substation & install a 69-12.5 kV, 7.5/10/12.5 MVA transformer: Includes refurbishment of structures and ground grid, environment...

AI summary The Cape Breton Regional Hospital (CBRH) Load Impact Study outlines Alternative 3, which involves refurbishing a substation and upgrading infrastructure, with a total estimated cost of $3,032,150. However, Alternative 1 is identified as the least cost option, though it has reliability concerns due to shared infrastructure.

System Security Item 3: Confidentiality was applied to the System Impact Study Report (Attachment 1) for this capital work order. The enclosed system operating diagrams are confidential due to system security concerns. Protection of the po...

AI summary Confidentiality was applied to the System Impact Study Report and system operating diagrams due to system security concerns, as protecting the power system ensures reliability and reduces risks from external threats.