In general, feeders have a design rating of 325 amps for regular loading, except in cases where derating is required due to thermal or other limitations. This criterion allows for emergency capacity during extreme cold weather, restoration...
AI summary The text discusses the design ratings of feeders, noting that they are generally rated for 325 amps, except in cases requiring derating. It also identifies specific feeders at risk, highlighting the lack of real-time monitoring for some and the unavailability of actual loading data during a January event.
1 field, resolving the issue. This device was originally missing from the list of at-risk devices 5 "Select areas were identified across the Province where restoration is known to be subject to 6 cold load pickup (very high loading followi...
AI summary The text discusses the identification of areas in Nova Scotia where cold load pickup occurs after outages, leading to high loading on reclosers. These areas are identified through monitoring winter peak loading and field personnel feedback. Cold load pickup occurs when circuits are re-energized following extended outages during cold weather, causing temporary loading that exceeds normal peak levels.
NON-CONFIDENTIAL Cold Season Rating Protection Limit SCADA Alarm Limit Post 2023 Cold Event 64 MVA 54 MVA Post 2026 Cold Event 64 MVA 61MVA 1 Request IR-11: 2 3 Reference page 18 of the report. 4 5 79V Three-Mile Plain "Loading above desig...
AI summary The document discusses a transformer loading event during a cold weather event, including the transformer's capacity limits, SCADA monitoring capabilities, and the need for a field technician to confirm winding temperatures. The response indicates that SCADA is available at the substation but does not provide real-time winding temperature data for the transformer.