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...
CCA-Treated Wood Faces Potential Litigation
In May 2001, the Environmental Working Group and the Healthy Building Network formally petitioned the Consumer Product Safety Commission (CPSC) to ban...
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...
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...
Austin Energy Embraces Steel
Just over a decade ago, Austin Energy (Austin, Texas, U.S.), a municipally owned utility serving 364,000 customers in central Texas, turned to steel distribution...
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...
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...
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,...
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...
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...
Concrete-Filled Steel Pole Goes Up in Southern Florida
Sometimes transmission poles in urban areas must fit into tight locations. Such is the case for poles located in a sidewalk when the line is built in...
Australian Power Pole Testing Method Wins Contract
A unique method of testing power pole strength has won a major contract with China Light & Power in Hong Kong. This technique not only uncovers all hidden...
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...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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