Overhead T&D

Infrastructure & Technologies

Optimal Transformer Efficiency Using Weighted Average

In order to improve the efficiency of electrical distribution in commercial buildings, the US Department of Energy (DOE) introduced regulations with more stringent minimums on transformer efficiencies in January 2016. This was covered under the Code of Federal Regulations 10 CFR Part 431.192 and...

Underground Distribution

Underground Smart Grid

In recent years, the cost to bury high-voltage power lines has decreased dramatically. The American Transmission Company reports that installation costs for underground transmission lines (over 100 kilovolts) are now only 2.5 to 10 times the cost of an equivalent overhead line. Consequently, the...

Wire and Cable

The Overlooked Benefits of High-Performance Powerline Conductors

Background:For over 100 years Transmission Engineers have relied on aluminum conductors strengthened by steel core wires, commonly referred to as ACSR conductors. These conductors offered reasonable performance and durability and were capable of operating at temperatures up to 93° C. Above this...

Outage Management & Restoration

Storm Outage Restoration Congress comes to Georgia

Cairo Vanegas, the superintendent Of Electric T&D for Fort Pierce Utilities Authority will speaking at the Storm Outage Restoration Congress on December 11th and 12th in Atlanta, Georgia on "Examining Methods For Reducing Damage To Overhead Infrastructure Through Armless Construction And Other...

Conductors & Materials

Energy Ottawa's State-of-the-Art, Non-Destructive Cable Measurement System for Medium Voltage Distribution Cables

Energy Ottawa offers a state-of-the-art, non-destructive cable measurement system for the dependable assessment of medium voltage distribution cables. We have partnered with National Research Council Canada (NRC), the Government of Canada’s premier research and technology organization, to...

Pole Line Hardware

Fiberglass Reinforced Polymer Crossarms 5th Percentile Design Strength Value Development

Introduction In 2007, the National Electric Safety Code (NESC) standards committee adopted composite poles, crossarms, and braces into the code. This action was significant in mandating the composite electrical structures manufacturing industry to publish their design strength values to a 5% Lower...

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High-Capacity, Energy-Efficient ACCC® Conductor Case Study

This project won EEI Transmission Project of the Year – 2016

Description: 240 circuit miles, 345 kV line, double bundle
Project: Replace 1,440 miles of ACSR conductor with ACCC

Objectives

Improve reliability (reduced sag and corrosion)
Increased capacity to serve growth (2X ACSR)
Improve grid resilience using high-strength composite core
Retain existing structures – to reduce capital costs and timeframe
Eliminate down time with live line reconductoring

See the Case Study in the Reliable...

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