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Disaster & Recovery


Evolution of Outage Management Systems

Examining the evolution of outage management systems BY GERALD GRAY & JOHN SIMMINS, Electric Power Research Institute (EPRI) Once again, a major storm event, in this case Hurricane Sandy, has brought increased attention to a utility’s capability to respond to and mitigate damage to its...

Vegetation Management


Reliability Vs. Vegetation

Florida Power & Light takes steps to keep lights on Managing vegetation (that is, trees, bushes and other neighboring plants) around power lines is a top priority for electric utilities. According to the U.S. Environmental Protection Agency (EPA), unmanaged vegetation can cause electricity...

Conductors & Materials


Pole Line Hardware


Facing Wildfire? Choose Toughened Glass Insulators

Insulators under fire, what are we talking about? A line directly in the fire is considered as lost A line near the heat of a fire can be saved What is the condition of insulators on a line nearby a fire? Reliability of insulators during or after a fire is a key consideration for T&D...

Infrastructure & Technologies


SAME DAY SWITCHING

Same day switching avoids the extended outages and human and equipment costs associated with inoperable and broken switches.The vast majority of air break disconnect and ground switches in electric power networks typically receive no appreciable maintenance. This invariably results in the inability...

Underground Distribution


Detecting Faults in Underground Networks

Enhancing protection using directional faulted circuit indicators BY CHRISTOPHER EVANICH, Thomas & Betts Underground electrical networks provide reliable service to end users, but create problems for utility personnel in locating faults. Electric utilities who utilize an underground network...

Overhead T&D

Solving Underground Cable Problems with Partial Discharge Testing

How to prevent failure with partial discharge testing

BY HENNING OETJEN, Megger

Partial discharge (PD) measurements are increasingly used as a reliable and non-destructive diagnostic method to detect weak spots in the insulation of underground cables. Routinely, partial discharge measurements are utilized in laboratories for testing cable reels prior to commissioning and in the field to verify installation quality.

Typically, many factory-testing standards require that workers use a 50/60 hertz (Hz) high-voltage...

Overhead T&D Articles