“The key to our approach is to break up the request for power from each car into multiple small chunks — into packets”
Selecting a Chevy Volt, Tesla Model S, Nissan Leaf — or one of many other new models — shoppers in the United States bought more than 96,000 plug-in electric cars in 2013. That’s a tiny slice of the auto market, but it’s up eighty-four percent from the year before. In Vermont, as of January 2014, there were 679 plug-in vehicles, according to the Vermont Energy Investment Corporation. That’s two hundred percent growth over 2013.
This is good news in terms of oil consumption and air pollution. But, of course, every plug-in has to be, well, plugged in. And this growing fleet will put a lot of new strain on the nation’s aging electrical distribution systems, like transformers and underground cables, especially at times of peak demand — say, six in the evening when people come home from work.
How to manage all these cars seeking a socket at the same time — without crashing the grid or pushing rates to the roof — has some utilities wondering, if not downright worried.
Now a team of UVM scientists have created a novel solution, which they report on in the forthcoming March issue of IEEE Transactions on Smart Grid, a journal of the Institute of Electrical and Electronics Engineers.
Put it in a packet
“The key to our approach is to break up the request for power from each car into multiple small chunks — into packets,” says Jeff Frolik, a professor in the College of Engineering and Mathematical Sciences and co-author on the new study.
By using the nation’s growing network of “smart meters” — a new generation of household electric meters that communicate information back-and-forth between a house and the utility — the new approach would let a car charge for, say, five or ten minutes at a time. And then the car would “get back into the line,” Frolik says, and make another request for power. If demand was low, it would continue charging, but if it was high, the car would have to wait.
“The vehicle doesn’t care. And, most of the time, as long as people get charged by morning, they won’t care either,” says UVM’s Paul Hines, an expert on power systems and co-author on the study. “By charging cars in this way, it’s really easy to let everybody share the capacity that is available on the grid.”
Taking a page out of how radio and internet communications are distributed, the team’s strategy will allow electric utilities to spread out the demand from plug-in cars over the whole day and night. The information from the smart meter prevents the grid from being overloaded. “And the problem of peaks and valleys is becoming more pronounced as we get more intermittent power — wind and solar — in the system,” says Hines. “There is a growing need to smooth out supply and demand.”
At the same time, the UVM teams’ invention — patent pending — would protect a car owner’s privacy. A charge management device could be located at the level of, for example, a neighborhood substation. It would assess local strain on the grid. If demand wasn’t too high, it would randomly distribute “charge-packets” of power to those households that were putting in requests.
“Our solution is decentralized,” says Pooya Rezaei, a doctoral student working with Hines and the lead author on the new paper. “The utility doesn’t know who is charging.”
Instead, the power would be distributed by a computer algorithm called an “automaton” that is the technical heart of the new approach. The automaton is driven by rising and falling probabilities, which means everyone would eventually get a turn — but the utility wouldn’t know, or need to know, a person’s driving patterns or what house was receiving power when.
The Latest on: Electric Grid
via Google News
The Latest on: Electric Grid
- Duke Energy and Purdue study nuclear energy as possible future power source for universityon May 13, 2022 at 2:19 am
Purdue University and Duke Energy are teaming up to study if nuclear energy can meet the university's power needs in the future ...
- Natural Resources Council of Maine: New Law Will Tie Electric Grid Planning to Maine's Climate Goalson May 11, 2022 at 8:57 pm
The Natural Resources Council of Maine issued the following news release:Electric utilities in Maine will for the first time be required to create a comprehensive plan for supporting the state's ...
- Renewables projects face 10-year wait to connect to electricity gridon May 9, 2022 at 2:26 pm
The Energy Central Power Industry Network is based on one core idea - power industry professionals helping each other and advancing the industry by sharing and learning from each other. If you have an ...
- Grid operators warn of electricity shortage amid switch to renewables: Reporton May 9, 2022 at 8:26 am
The issue is on the rise throughout the country as many traditional and nuclear power plants are being retired.
- Power Grid System Market to Offer Increased Growth Prospects for Manufacturers – TMRon May 8, 2022 at 10:44 pm
Overview The rising offshore oil and gas exploration activities around the world are motivating the growth in the global ...
- Texas power grid manager lowers power grid threat level for weekend weatheron May 6, 2022 at 4:53 pm
The state grid operator said extra power will likely not be needed this weekend. They should have enough in reserves.
- How Electric Vehicles Could Fix the Electrical Gridon May 6, 2022 at 5:00 am
Local governments and policymakers are anxious about the U.S. grid’s ability to withstand ever-increasing demand. Consumers could hold the key to an untapped resource.
- Worldwide electrical grid is already under constructionon May 5, 2022 at 1:00 am
I have been advocating construction of a worldwide electrical grid, permitting complete replacement of fossil fuels by solar energy. This grid would solve solar energy's chief problem — its extreme ...
- Offshore Power Grid System Market to Witness Astonishing Growth by 2030 | FMC Technologies, ABB, General Electrics and moreon May 3, 2022 at 1:49 am
The Offshore Power Grid System Market has witnessed continuous growth in the past few years and is projected to grow at a good pace during the forecast period of 2022-2030. The exploration provides a ...
- A Smart Electric Grid Could Save Consumers $50 Billion a Yearon May 2, 2022 at 4:51 am
Reimagining the United States power grid could save consumers $50 billion a year An innovative plan that encourages cooperation in maintaining the stability and reliability of the United States' ...
via Bing News