FRP Composite Poles are the Future of Transmission Lines
Fiber-reinforced polymer (FRP) composite distribution poles are nothing new to electric utilities. However, 70- to 80-ft (21- to 24-m) pultruded FRP transmission...
HECO Puts New Composite Conductors to the Test
Utilities are always looking for new ways to extract additional capacity from existing transmission lines. Construction of new lines is riddled with uncertainty...
India Adopts Live-Line Practices
India's transmission system has encountered several problems with respect to nonavailability for live-line work as a result of the inadequate clearances...
Insulator Selection is a Complex Balancing Act
Porcelain and non-ceramic insulators (NCIs) have developed by following similar paths. In the early stages, various problems with both types sometimes...
Ministry of Electricity and Water Doubles Capacity
In April 2003, the Ministry of Electricity and Water (MEW; Salalah, Oman) completed the second major installation of its J-Power System's Gap-type uprating...
Operating Transmission Lines at Higher-Than-Design Voltage
Utilities are looking for any means to increase transmission-corridor power-transfer capacity. Most upgrades focus on increasing the current a line can...
Polymer Insulators, Handle with Care
Polymer insulators, when properly handled and installed, are, for the most part, providing the desired operating characteristics. However, units that...
Silicone Rubber Insulators Withstand Desert Conditions
The electric network in the eastern region of Saudi Arabia operates under harsh environments that include desert, marine and industrial pollution, along...
Structures: Old & New
After decades of neglect, our infrastructure is aging and lines are increasingly overloaded. Finally, utilities are beginning to realize that they must...
Transmission Line Conductor Design Comes of Age
Deregulation and competition have changed power flows across transmission networks significantly. Meanwhile, demand for electricity continues to grow,...
Utilities Make Tradeoffs When Selecting Pole Types
For more than 20 years, I've been dealing with poles involving specifications, design, manufacturing, treatments, economics, hardware, testing, repair,...
Aldridge Overcomes Obstacles in 230-kV Creek Project
In mid-October 2002, Conectiv Power Delivery (Carneys Point, New Jersey, U.S.) awarded Aldridge Electric's Drilling Division (Libertyville, Illinois,...
Morocco: ALSTOM to Strengthen Moroccan Transmission Grid
An ALSTOM-led consortium has won a Euro 69 million contract in Morocco to supply, on a turnkey basis, three new extra-high-voltage substations and upgrade...
Dialysis on a Grand Scale
In the past three years, Exelon Corp. (Chicago, Illinois, U.S.) has made great strides in upgrading its transmission and distribution in-frastructure...
Utility Puts TR-XLE and EPR Cables to the Test
In the mid 1980s, plans were underway to construct one of the largest shopping malls in the southeastern United States, just south of Birmingham, Alabama,...
Oncor Completes Critical Texas Lines Ahead of Schedule
Oncor (Dallas, Texas, U.S.), the energy delivery unit of TXU, has completed four transmission lines that will help relieve present transmission congestion...
The Future of Transmission In North America
DTE Energy, the parent company of Detroit Edison (Detroit, Michigan, U.S.), is getting out of the transmission business and, therefore, will no longer...
United States: Trans-Elect NTD, Din Power Authority To Develop Major Transmission Project
Trans-Elect (Reston, Virginia) and the Din Power Authority (DPA) have signed an agreement to pursue the completion of the development and permitting of...
Construction Damage Compromises Line Integrity
The introduction of polymeric insulators has created more options and opportunities for the overhead line designer and system operator. With the high...
Northern Utilities Optimize Lightning Arrester Placement
In 1994, Minnkota Power (Grand Forks, North Dakota, U.S.) embarked on a program to improve power quality within its system. The scope of the project was...
Pole Testing Ensures High Reliability and Long Life
Electric utilities are placing increasing emphasis on cost-effectively extending the life of existing facilities while maintaining adequate levels of...
Call for Participation: Utilities Seek More Capacity from Existing Right of Way
Today, power lines are often operated at their limits while utilities continue to face delays in installing new facilities. Thermal limits occur when...
Switzerland/India: ABB Wins Transmission Contract in India
ABB (Zurich) has won a US$48 million order in India to design, build and install a new power transmission system that will strengthen the country's power...
What's New In Transmission
The staff of T&D World, along with Black & Veatch LLC (B&V, Overland Park, Kansas, U.S.), convened a group of experts to discuss the future of the electric-transmission...
Listen to Your Equipment
A competitive national electricity market increases the incentive to reduce maintenance costs and outages on the transmission network. There is a particular...
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