Engineer aims to regulate varying wind power

Oct 19, 2007
Engineer aims to regulate varying wind power
Dr. Surya Santoso stands in front of a photograph of a Siemens wind turbine at King Mountain Wind Ranch in McCamey, Texas. These towers can measure up to 68 meters in height, with blades as long as 30 meters, generating one to two megawatts (million watts) of power. Photo: Erin McCarley

As Texas' electric grid operator prepares to add power lines for carrying future wind-generated energy, an electrical engineer at The University of Texas at Austin is developing improved methods for determining the extent to which power from a wind farm can displace a conventional power plant, and how best to regulate varying wind power.

"The cost of wind energy has become competitive with that of energy from fossil fuels because of technology improvements," said Assistant Professor Surya Santoso. "Unfortunately, electric power generated from wind energy is intermittent and variable. That means we need to have better measurements of wind power plants' output as we integrate wind energy into existing power systems. We also need to develop a way of managing wind power so it can be more readily called upon when needed."

Texas has outstripped California since 2006 as the leading national producer of wind power, with most of the state's renewable energy goal by 2025 focused on wind power. To help meet this goal, the state's Electric Reliability Council of Texas is expected to add about 1,500 megawatts of new wind generation this year alone. In late September, Texas also awarded four offshore tracts along the Gulf Coast for wind power projects with a generating capacity of 1,150 megawatts.

Santoso is developing two strategies to manage and overcome the intermittent and variable behavior of wind power. With a two-year, $200,000 grant from the National Science Foundation, he and his students are developing computational methods to measure the actual capacity contribution of wind farms. This will allow system planners to calculate how much a wind farm can contribute to meeting expected power needs.

Santoso's lab is also using the funding to establish the technical requirements of energy storage systems that would serve as temporary "batteries" for releasing stored wind energy at optimal times.

"Having a proper energy storage system would allow you to harness free wind when it's available, but release that energy at the time of your choosing with a desired power profile," Santoso said. He noted that a wind energy storage system would also increase wind farms' overall capacity contribution and reduce the likelihood of overloading transmission power lines that must carry energy from different power sources.

Source: University of Texas at Austin

Explore further: Student develops filter for clean water around the world

add to favorites email to friend print save as pdf

Related Stories

Kingston, Jamaica hybrid project to harness sun and wind

7 hours ago

A hybrid energy project in Kingston, Jamaica, aims to satisfy the need for money-saving renewable energy. U.S.-based WindStream Technologies recently announced the wind solar hybrid installation commissioned ...

Archaeologists excavate NY Colonial battleground

8 hours ago

Archaeologists are excavating an 18th-century battleground in upstate New York that was the site of a desperate stand by Colonial American troops, the flashpoint of an infamous massacre and the location of the era's largest ...

Google eyes Chrome on Windows laptop battery drain

15 hours ago

Google Chrome on Microsoft Windows has been said to have a problem for some time but this week comes news that Google will give it the attention others think the problem quite deserves. Namely, Google is to ...

Security contest techies say they hacked Tesla Model S

17 hours ago

The good news: Tomorrow's cars are computers on wheels. The bad news: Tomorrow's cars are computers on wheels. Ma Jie, writing in Bloomberg News, reported this week that the Tesla Model S sedan was the target ...

Water problems lead to riots, deaths in South Africa

19 hours ago

Three babies who died from drinking tap water contaminated by sewage have become a tragic symbol of South Africa's struggle to cope with a flood of people into cities designed under apartheid to cater to ...

Recommended for you

Hoverbike drone project for air transport takes off

2 hours ago

What happens when you cross a helicopter with a motorbike? The crew at Malloy Aeronautics has been focused on a viable answer and has launched a crowdfunding campaign to support its Hoverbike project, "The ...

Student develops filter for clean water around the world

Jul 23, 2014

Roughly 780 million people around the world have no access to clean drinking water. According to the World Health Organization (WHO), 3.4 million people die from water-related diseases every year. ETH student Jeremy Nussbaumer ...

Minimising drag to maximise results

Jul 23, 2014

One of the most exciting parts of the Tour de France for spectators is the tactical vying for spots in the breakaway group at the front of the pack.

User comments : 0