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Duke Energy Harrisburg Substation 638e198cd7b16

Point-to-Point Digital Secondary System Design for a Transmission Substation: Part 2

Oct. 23, 2023
Duke Energy is evaluating the use of a point to point digital secondary system to reduce the amount of copper utilized in traditional substation protection designs.
Cover Goff 2
Test and Measurement

Low-Voltage Bushing Box and Low-Voltage Bushing Leaks Root Cause Analysis

Jan. 18, 2023
Bushing failures are the major causes of transformer failures. These leads can lead to costly consequences: oil spills, explosions, fires and the significant cost to replacing...
Figure 1: Hastings, Michigan HDD contractor, Dig-It Inc utility crew installing distribution line in Southwest Michigan.
Intelligent Undergrounding

Horizontal Directional Drilling: When the Engineer Hands You A Bore Plan

July 8, 2022
A multi-part series on what a job superintendent needs to know about the escalating use of horizontal directional drilling for undergrounding transmission and distribution lines...
Photo by Chris Van Lennep, Dreamstime
New spools of high voltage cable are deployed for installation in an undergrounding project. The lengths of underground lines are subject to certain physical limitations which, when exceeded, cause untimely wear and tear.
Intelligent Undergrounding

To Use Overhead or Underground Transmission? That is (Still) the Question (Part II)

April 5, 2022
The second part of this two-part series examining underground high-voltage ac lines explores cable length limitations.
Illustration of electric potential contours around a high voltage transmission line.
Overhead Transmission

High Voltage AC Transmission Line Design: NESC 5-mA Rule Considerations

Jan. 26, 2022
Basic theoretical background about the 5-mA Rule, historical context, and practical considerations when applying the rule in the design of overhead transmission lines.


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T&D World Insider

T&D World's Members-Only Access

April 14, 2021
Premium content resources deliver critical insights to improve utility operations. Join for free!
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Fire at a power substation

Fire Protection in Substation Transformers

March 8, 2019
Oil-filled transformers pose the greatest fire risk in any substation.
Courtesy of the Village of Minster.
DER System
Energy Storage

Batteries Included, Some Assembly Required

March 16, 2018
Utilities are deploying energy storage facilities across the grid.
Digital Vision/Photodisc/Thinkstock

How Electrical Lineman Can Prioritize Safety On The Job

Nov. 16, 2017
Linemen risk falls, electric shocks, burns, and other injuries while on the job every day
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A Refresher on Power Transfer Formulas

April 7, 2014
How real and reactive power travel from the generator to your home.