N-2CI C0044172 REFILE - Redacted
12 passages
B. Capacity Voltage (kV) and Circuits C. Project Location Not Applicable D. Requirements Codes and/or Standards Environmental Monitoring E. Technology Selection Not Applicable F. Strategy Right-of-Way (ROW) Contracting/Sourcing Escalation...
AI summary The text outlines various project planning and implementation components, including system/grid planning, environmental studies, technical deliverables, and stakeholder engagement. It covers aspects such as right-of-way management, routing options, and construction permits.
13.0 CONCLUSIONS & RECOMMENDATIONS - NSPI Transmission Engineering reviewed all existing assessments, inspections, correspondences to date completed internally and externally by industry experts. - Further required analysis and assessment...
AI summary The document concludes that NSPI Transmission Engineering has reviewed existing assessments and recommends installing AFS and dampers, repairing conductor damages, and installing vibration and galloping mitigation devices to address risks associated with the long crossing.
GALLOPING CONTROL SOLUTION Based on this background, a combination of airflow spoilers and interphase spacers may be the best option for an add-on solution for the current problem span. There should be more than normal number of interphase...
AI summary The text discusses a galloping control solution involving the use of airflow spoilers and interphase spacers on a 1445 m span. It suggests that an uneven spacing of at least 13 interphase spacers per circuit is necessary to avoid oscillation frequencies between adjacent spans.
A possible spacing plan using 15 spacers is shown in Figure 14. Table 1 suggested dimensions for 13 interphase spacers in 1445 m span End to First to Second to Third to Fourth to Fifth first second third fourth end or fifth interphase inte...
AI summary The text describes a spacing plan for interphase spacers in a 1445 m span, using specific dimensions and ratios based on 1/25 of the span length. It includes a table with suggested dimensions for 13 spacers and outlines the spacing ratios between different phases.
Fundamental information about aeolian vibration of the long span. This is a large conductor, (48.9 mm diameter) but if it is operated at 345 kV corona and radio interference can be expected. Typical lines for this voltage use bundle conduc...
AI summary The text discusses aeolian vibration in a 345 kV conductor with a diameter of 48.9 mm, explaining how wind speeds between 1 to 7 m/s cause vertical vibrations. It uses the Strouhal relation to calculate vortex shedding frequencies and describes how ice accumulation affects vibration frequencies and amplitude.
Canso Strait 230 kV Crossing Assessment 10 7 18.8 5.70 254 15 1 2.3 45.7 31.6 15 7 16.4 6.52 221 20 1 2.1 51.4 28.1 20 7 14.6 7.35 197 Also increasing the diameter by adding ice magnifies the energy transferred from the wind to the conduct...
AI summary The document discusses the impact of increasing conductor diameter due to ice accumulation on aeolian vibration energy transfer. It notes that energy transfer increases approximately as the fourth power of diameter, making damping schemes for uniced conductors inadequate when ice builds up.
Alternative damping methods to conventional Stockbridge type dampers is required for such spans. An example of "festoon" or "loop" dampers used for along fiord crossing in Norway is included in the EPRI "Orange" book [1]. A photo of this t...
AI summary The text discusses the need for alternative damping methods, such as 'festoon' or 'loop' dampers, for use in spans, particularly in areas like along fiord crossings in Norway. It references the EPRI 'Orange' book and notes the importance of knowing loop lengths for different wind speeds and ice thicknesses for proper design.
REDACTED CI C0044172 Attachment 1 Page 50 of 247 APPENDIX 1 DOCUMENT LIST (data files?) CON DUCTOR TESTS AND REPOR RTS FROM SALVI, DERVAUX a and ZTT H349324-0000-70-236- Conductor Testing at ZTT Structure of conductor, Procedures for testi...
AI summary This document lists conductor tests and reports conducted by SALVI, DERVAUX, and ZTT, including tests on steel and aluminum alloy wires, as well as complete conductor tests. The tests were performed according to ASTM standards, with some data not found and others to follow.
Canso Strait 345 kV Crossing: Drone Inspection May 2024
AI summary The text references a drone inspection of the Canso Strait 345 kV Crossing conducted in May 2024, indicating an activity related to infrastructure monitoring or maintenance.
Canso Strait 345 kV Crossing: Drone Inspection May 2024 and five Salvi dampers in place at suspension end, No broken strands. DJI_20240202022554_0001_S.mp4 2024- 02-02 1 min A4-A5 lower south north mainland side, back span, out of focus, v...
AI summary The document details a drone inspection conducted in May 2024 for the Canso Strait 345 kV Crossing. It includes footage descriptions of various sections of the power line, noting the presence of dampers, visibility issues, and potential damage, though no broken strands were found in most cases.
Catalog er Range hes) Units Wt/Lbs Length Rod Diameter Rods Per Color Number Min. Max. Nominal Conductor Size Per C arton (Inches) (Inches) Set Code AR-0106 AR-0306 .194 .207 #6, 7W Alum. Alloy #6, 6/1 100 100 35 45 40(S) 52(D) .121 7 Blue...
AI summary The text presents a table containing specifications for various catalog numbers, including conductor size ranges, weights, lengths, rod diameters, and colors. These details pertain to electrical components, likely used in power distribution systems.
Figure 8 and lashed messenger cables are special applications for short span construction. Air Flow Spoilers may be located in accordance with the table below. Span Length in feet Air Flow Spoilers per cable Air Flow Spoiler placements sta...
AI summary The text discusses the placement of Air Flow Spoilers on Figure 8 and lashed messenger cables for short span construction, providing specific placement guidelines based on span lengths. It also notes the need to contact the factory for recommendations on longer spans and to determine the correct Air Flow Spoiler size.