GENI facebookGENI TwitterGENI YoutubeGENI LinkedIn
More >>

Add news to your site >>







 een wereldwijd elektriciteitsnet een oplossing voor veel problemen  GENI es una institución de investigación y educación-enfocada en la interconexión de rejillas de electricidad entre naciones.  ??????. ????????????????????????????????????  nous proposons la construction d’un réseau électrique reliant pays et continents basé sur les ressources renouvelables  Unser Planet ist mit einem enormen Potential an erneuerbaren Energiequellen - Da es heutzutage m` glich ist, Strom wirtschaftlich , können diese regenerativen Energiequellen einige der konventionellen betriebenen Kraftwerke ersetzen.  한국어/Korean  utilizando transmissores de alta potência em áreas remotas, e mudar a força via linha de transmissões de alta-voltagem, podemos alcançar 7000 quilómetros, conectando nações e continentes    
What's Geni? Endorsements Global Issues Library Policy Projects Support GENI
Systems Prepare for Renewables Integration - Nov. 11, 2011 - Bill Opalka - renewablesbiz.com - Transmission - Technical Articles - Index - Library - GENI - Global Energy Network Institute

Systems Prepare for Renewables Integration

What will it take to accommodate wind and solar?

Nov. 11, 2011 - Bill Opalka - renewablesbiz.com

Increasing amounts of renewable energy are being integrated into the nation’s power systems, but the impacts are not uniformly understood. So, the Department of Energy set out to identify best practices as it performed a worldwide survey of operators.

The result was a new study that will be released soon. In the meantime, “Successful Strategies for Renewable Integration - A Groundbreaking Global Study” was the subject of a recent webinar. The study was led by Lawrence Jones, vice president, regulatory affairs, policy & industry relations, Alstom Grid and funded by the Recovery Act.

This study is based on specific information provided by the system operators, which have not previously been gathered in one document, said Charlton I. Clark of the DOE office of Energy Efficiency and Renewable Energy.

The report was mostly focused mostly on wind because of the larger penetration, although some applications will apply equally to solar generation.

With significant expansion of wind generation expected worldwide, the reliability issue becomes critical. Some estimates put global wind at 500 gigawatts by 2030. There was a mere 2 gigawatts in 1990. The current worldwide tally is 194 gigawatts.

The study was conducted over 12 months and involved a survey of grid operators, six in-depth visits to control centers and a literature survey.

One point gleaned in the survey was that large operators don’t necessarily have the most experience with wind while some smaller operators with higher penetration have valuable insights.

No surprise, but accurate forecasting is paramount as well as support tools to help integrate renewables. Those would include voltage stability analysis and optimal power flow with wind forecasts.

“Policies and grid code changes are needed to support large-scale wind integration,” Jones said.

With lower penetration levels, some common practices coalesced over the past decade.

“Around 2000 to 2003, there seemed to be a convergence of similar policies around the world. From then on, a lot of utilities seemed to see a lot of penetration of wind energy,” he added.

As might be expected, the flexibility needed, as enabled by the smart grid, would support the further integration of renewable energy.

Perhaps in a surprise, survey respondents said wind integration has had little or no impact on reserve requirements. 52 percent said there were no additional reserves required and another 30 percent said the impact was slight.

Those areas least affected had lower penetration levels, however.

A series of recommendations were included in the report.

Those include the implementation of a centralized wind forecasting program. “Different grid operators seem to have different perspectives on the level of data required,” Jones noted.

However, the study suggests a yearly review of data to see what the most critical data needed to maintain a high level of performance.

Control rooms of the future will even look different, as the researchers noted in a study of Spain, which had a separate site for renewables integration.

“With increased penetration of wind and impact of variability, the time to make decisions seems to be getting shorter and shorter,” Jones said. With those demands on the operators’ attention, it would be especially difficult to have the same controllers managing variable and conventional generation simultaneously.

And one of the main sticking points for integration – not unique to this study – is a plea to provide policy measures that accelerate building more transmission capacity.

And there’s a large constituency for that policy, not limited to renewables integrators.

The editorial staff at RenewablesBiz.com is passionate about exchanging ideas and dedicated to promoting ongoing conversation about renewable and sustainable energy issues. We invite you to join and contribute to our online community. If you have an idea for an article or editorial contribution, please contact me via email, bopalka@energycentral.com, or phone, 860.633.0090.

 


OVER VIEW



Updated: 2016/06/30

If you speak another language fluently and you liked this page, make a contribution by translating it! For additional translations check out FreeTranslation.com (Voor vertaling van Engels tot Nederlands) (For oversettelse fra Engelsk til Norsk)
(Для дополнительных переводов проверяют FreeTranslation.com )