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Conductors & Materials


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...

Underground Distribution Sensors

Exploring the benefits of wide-area monitoring BY TED MYERS, On-Ramp Wireless The average citizen and business experiences over 120 minutes of electricity outage duration a year. This has a significant societal impact costing 10s to hundreds of billions of dollars annually. Furthermore, the measure...

Conductors & Materials

Monitoring Underground Lines with SCADA

How SCADA can help prevent repairs and service disruptions

BY RICHARD CLARK, InduSoft

Underground transmission and distribution lines create unique challenges, as they require special insulation materials to protect conductors, and complex cooling systems because heat cannot be dissipated in free air as with overhead lines. Despite the additional expense of specialized insulation materials and cooling systems, not to mention very high construction costs, underground electric lines are standard in large, congested cities.

Underground...

Related Articles


Improve Energy Efficiency in Underground Systems

Making appropriate cable component design and material choices BY DENNIS DOSS, General Cable ore than ever, society is realizing that energy resources are dwindling and becoming more expensive. In response, North American electric utilities offer consumers a variety of incentives to deploy energy...

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...

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...


Insulators' ageing in North America - How about testing them?

Sediver has established in the USA an assembly factory for glass insulators in 2017 but also, and perhaps more interesting for some engineers, a laboratory capable of performing all the tests required by the world’s standards. Large test campaigns have already been conducted in this...

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...

Power line conductor repair

How Modern Conductors are Improving Grid Reliability and Much More

Reflections: Nearly twenty years ago when I got into the energy business, reliability was a second-tier design objective for most transmission engineers. Safety factors had already been established and the materials we used for structures and powerline wires (conductors) were well known. While...

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