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United Power Installs Hendrix Aerial Spacer Cable Solution to Address Fire Mitigation Needs

Based in Brighton, CO, United Power Inc. is the 2nd largest electric cooperative in Colorado. With over 5,000 miles of power lines and nearly 83,000 meters, they serve over 200,000 customers along the north central range of the Colorado Rockies. A section of the United Power service area also heads...

Wire and Cable

Reconducting Existing Transmission Lines Enables Low-Cost Grid Decarbonization

To support decarbonization mandates in the U.S., many utilities and transco's have proposed new transmission lines to link load centers with new renewable generation assets and move power from one region to another over vast distances. While the U.S. government continues to struggle to find ways to...

Pole Line Hardware

A New Age for Toughened Glass Insulators - With Clarity Comes Safety

INTRODUCTIONIn 2005 an article about toughened glass insulators (TGI) titled “Return to Clarity” was published. Fifteen years later, this sequel article by a team including the two original authors, picks up where the former concluded with optimism about the future of TGI technology...

Disaster & Recovery

Texas CEO Calls for Redesign of the Grid

As Texas continues to experience rapid population growth and surging electricity demand, there is increasing pressure on the state's electrical grid to meet the needs of its residents. According to Texas energy leader, Dan Woodfin, the state's grid needs a fundamental redesign to address the...

Infrastructure & Technologies

Using Continuous Offline Insulation Resistance Testing and CBM to increase Plant Safety and Reliability

Since over 80% of electrical maintenance testing involves evaluating insulation integrity, the first and most important test done on electrical equipment is an Insulation Resistance (Meg) Test. This is because electrical insulation begins to age as soon as it’s manufactured and aging causes...

Outage Management & Restoration

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...

Home T&D Technologies Overhead T&D

Lateral Fuses and Reliability

Improving protection and control for distribution systems

BY STEVE GREEY, S&C Electric

In 2008, Toronto Hydro completed a study of its worst performing feeders (distribution system feeder lines). This study identified the utility’s distribution feeders with the poorest reliability. The study raised an interesting question: “Why do lateral fuses which, since the 1930s, have been the most effective way of increasing reliability, provide adequate reliability on some of the 27.6-kilovolt distribution feeders and not others?”

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