Creating a 21st Century Grid
Date: Sunday, November 11, 2007 @ 15:43:02 UTC
Topic: General


by Stephen Lacey, Staff Writer/ Peterborough, New Hampshire [RenewableEnergyAccess.com]

In 1957, as Eisenhower began his second term as U.S. President, the first satellite launched into orbit and the first commercial nuclear reactor came online, electrical workers all over the country were installing the world's most advanced transmission and distribution (T&D) system. Today, much of that T&D system installed 50 years ago remains in place, holding together a patchwork grid for ever-expanding electricity markets.


Now in 2007 – the age of the internet, personal digital media and distributed energy — the grid has failed to keep pace with the rapidly changing technological landscape. While most industries rely on technologies that have been invented or updated in the last few years, the electricity delivery industry uses technologies that have more or less stayed the same for 100 years.

There's a common idiom that goes, “if it ain't broke don't fix it.” While the grid in the U.S. is hardly broken, it is beginning to deteriorate rapidly in some places, and it will need some serious repairs in order to meet the growing demand for electricity in general and distributed renewable electricity specifically.

“We need to see a very substantial transformation of the system,” says David Meyer, Senior Policy Advisor in the Office of Electricity Delivery and Energy Reliability at the U.S. Department of Energy (DOE). “We're outgrowing it in many parts of the nation. It's certainly not the high-capacity, integrated and smart system that we need.”...

As planners look to build more of those lines, they may have some emerging technologies to consider; particularly High Voltage Direct Current (HVDC) and wires based on nanotechnology.

HVDC transmission is certainly not a new concept — but it's gaining ground in the U.S. as renewable electricity will have to be transported further distances with higher efficiency in the future.

The other technology still in the research and development phase is the “armchair quantum wire,” made from tubes of carbon 100,000 times thinner than a human hair, called carbon nanotubes. When these nanotubes are made into a larger wire, they can conduct electricity far more efficiently and over far greater distances than the copper wires used today...

Full article here. [via KellyNet.com]






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