Overview & Events
Project description, task information, and event opportunities
Project Objective
The main objectives of the High Temperature Operation of Overhead Lines Project are to help utilities raise transmission line capacities (higher currents) without detrimental electrical or mechanical effects. This project aims to provide mitigation strategies and technical basis for raising the acceptable operating temperature of overhead transmission lines.
Project Value
This project provides value to our members by:
- providing insight into the mechanical effects high-temperature on conductors, connectors, and attached hardware
- providing insight into the electrical effects of operating conductors at higher current densities
- providing guidance on effective mitigation strategies for operating overhead lines at high temperatures
- providing calculators that:
- determine the surface temperature of conductors with known surface characteristics, ambient conditions, and applied current
- determine the effect of high temperature on the conductor strength and creep
- determine the sag and tension of overhead transmission conductors
- determine the resistance of conductors at various temperatures or applied current
Engagement Opportunities
| Meeting | Date | Location | Information |
|---|---|---|---|
| Live Working Task Force | February 19-22 (In-person) February 26-29 (Virtual) |
Charlotte, NC | Meeting Materials |
| EPRI R&D Project Update Webcast: P35.010 Live Working | May 21 11:00 am - 12:00 pm ET |
Webcast | |
| Overhead Transmission 2025 ARP Rollout #1 | June 12 11:00 am - 12:30 pm ET |
Webcast | Meeting Materials |
| EPRI R&D Information Exchange Webcast: Increased Transmission Capacity through High Temperature Operations: Industry Practices | June 19 2:00 pm - 3:00 pm ET |
Webcast | Meeting Materials |
| Overhead Transmission 2025 ARP Rollout #2 | July 16 2:00 pm - 3:30 pm ET |
Webcast | Meeting Materials |
| Live Working Task Force | August 19-22 (In-person) August 26-29 (Virtual) |
Charlotte, NC | Meeting Material |
| EPRI Overhead Transmission (Program 35) New Supplemental Launch Webcast | October 8, 1:00pm - 2:00pm ET | Webcast | Meeting Materials |
| EPRI End of Year Webcast: P35.014 High Temperature Operation | October 23 2:00 pm - 3:00 pm ET |
Webcast | Webcast Information |
| Increased Overhead Transmission Capacity Task Force - March 2025 | March 10-13 (In-person) / August 17-20 (Virtual) | Charlotte, NC | Register Here |