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Träfflista för sökning "WFRF:(Bertling Tjernberg Lina 1973) srt2:(2012-2014)"

Search: WFRF:(Bertling Tjernberg Lina 1973) > (2012-2014)

  • Result 1-10 of 18
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1.
  • Arafat, Yasir, 1985, et al. (author)
  • Remote switching of multiple smart meters and steps to check the effect on the grid's power quality
  • 2014
  • In: 2014 IEEE/PES Transmission and Distribution Conference and Exposition, T and D 2014; Chicago; United States; 14 April 2014 through 17 April 2014. - 2160-8563. - 9781479936557 ; , s. Art. no. 6863273-
  • Conference paper (peer-reviewed)abstract
    • The traditional electrical grid is transitioning into the Smart Grid (SG) and the introduction of Smart Meter (SM) is a first stage towards Smart Grid. The SM can offer new functionalities such as remote reading, automatic event reporting and the possibility of remote switching by the Distribution System Operator (DSO). The DSO can send remote signal to the breaker of the SM to disconnect or connect customers. This could be used when customers are moving or do not have a contract. DSO is currently applying this technique regularly for customers but one by one which do not affect the grid's power quality remarkably. But this technique has never been applied for multiple customers at a time in a single neighborhood and the possible effect on the grid's power quality is still unknown. This condition is studied in this paper through test scenarios which have already been planned to test. This paper presents necessary steps of remote SM switching for a large number of customers. Power quality standards and steps for measuring power quality during the tests are outlined. Possible risks of the test as well as the probability of occurring risk and also the consequences of those risks are studied in this paper.
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2.
  • Balram, Pavan, 1986, et al. (author)
  • Stochastic Model of Electricity Retailer Incorporating Aggregated Electric Vehicle Charging Uncertainty
  • 2013
  • Reports (other academic/artistic)abstract
    • This paper is a short version of a conference paper published at International Conference on European Energy Market (EEM), 28-31 May 2013, Stockholm, Sweden. It propose a model of an electricity retailer considering a future scenario where controlled charging of an aggregate of electric vehicles (EV) becomes a viable option. The retailer plans for purchase of electricity from the spot market while hedging its risks in the financial market, specifically the forward market. In a planning environment where the retailer has to make decisions for purchase of forward contracts ahead of spot market clearing, it faces uncertainties from spot market prices and customer demand. A stochastic programming approach with a financial risk measure is used to take into consideration the uncertainties described. A case study using the model is performed, the results of which indicate that EV customers and the retailer would benefit monetarily with increasing penetration of electric vehicles. The studies consecutively show that this is also the case when increasing fraction of customers opting for variable price contracts.
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3.
  • Bangalore, Pramod, 1983, et al. (author)
  • Self Evolving Neural Network Based Algorithm for Fault Prognosis in Wind Turbines : A Case Study
  • 2014
  • In: 2014 International Conference on Probabilistic Methods Applied to Power Systems (Pmaps). - 9781479935611
  • Conference paper (peer-reviewed)abstract
    • Asset management of wind turbines has gained increased importance in recent years. High maintenance cost and longer downtimes of wind turbines have led to research in methods to optimize maintenance activities. Condition monitoring systems have proven to be a useful tool towards aiding maintenance management of wind turbines. Methods using Supervisory Control and Data Acquisition (SCADA) system along with artificial intelligence (AI) methods have been developed to monitor the condition of wind turbine components. Various researchers have presented different artificial neural network (ANN) based models for condition monitoring of components in a wind turbine. This paper presents an application of the approach to decide and update the training data set needed to create an accurate ANN model. A case study with SCADA data from a real wind turbine has been presented. The results show that due to a major maintenance activity, like replacement of component, the ANN model has to be re-trained. The results show that application of the proposed approach makes it possible to update and re-train the ANN model.
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6.
  • Bertling Tjernberg, Lina, 1973, et al. (author)
  • Panel Session on Smart Grid in Europe
  • 2013
  • In: IEEE Conference publications on-line.
  • Conference paper (other academic/artistic)abstract
    • In Europe the climate goals expressed as 20/20/20 give main drivers for sustainable energy development – where smart grid is a facilitator to obtain these goals. Europe has been at the forefront of smart grid deployments especially in the areas of managing large penetration of renewable sources of energy, AMI and on advanced information technology. This panel gives examples from different smart grid deployments projects in Europe and lessons learned that can be applied for future deployments. The panel starts with a talk an advanced information technology and gives the answer to why Facebook has placed their server in Sweden.
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7.
  • Bertling Tjernberg, Lina, 1973 (author)
  • Samordningsrådet för Smarta Elnät
  • 2013
  • In: ELFACK 2013 Strategikonferens on-line.
  • Conference paper (other academic/artistic)abstract
    • En kort introduktion ges av Regeringens Samordningsråd för smarta elnät.Anna-Karin Hatt presenterade rådet i maj 2012. Uppdrag kan kortfattat presenteras i två delar. Att skapa en kunskapsplattform i Sverige inom smarta elnät och att föreslå till Näringsdepartementet en plan för Sveriges utveckling inom smarta elnät.
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8.
  • Bertling Tjernberg, Lina, 1973 (author)
  • Smarta elnät – vad händer i Europa?
  • 2013
  • In: ELFACK 2013 Strategikonferens on-line.
  • Conference paper (other academic/artistic)abstract
    • En kortfattad definition görs av begreppet smarta elnät - Smart Grid. En introduktion görs av grundläggande begrepp och bakomliggande tekniskt system dvs elkraftsystemet. Exempel ges från pågående relaterad forsknings vid Chalmers. På Europeisk nivå har en kartläggning gjorts över projekt inom smarta elnät. Den första översynen gjordes 2010, och en ny översyn har nyligen presenteras. I denna listas 281 projekt varav 90 är klassade som smarta mätare. Resultat från denna översyn vilken utförts av EU kommissionen under Joint Research Center (JRC). Slutligen ges rekommenderade länkar för mer information kring smarta elnät.
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9.
  • Bertling Tjernberg, Lina, 1973- (author)
  • The Smart Grid Experience in Europe
  • 2014
  • Other publication (pop. science, debate, etc.)abstract
    • The development of a Smart Grid in Europe has a strong link to the climate goals for sustainable energy systems. Europe has been at the forefront of smart grid deployments, especially in the areas of managing large penetrations of renewable sources of energy, advanced metering infrastructure (AMI) and on advanced information technology. 
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10.
  • Chatziioannou, Konstantinos, et al. (author)
  • On experience of smart grid projects in Europe and the Swedish demonstration projects
  • 2013
  • Reports (other academic/artistic)abstract
    • Renewable energy sources are expected to play a significant role into the future power system. The variable and at many cases not easily predictable production of electricity will pose a threat on the reliability and efficiency of the current electricity grid. Hence, there is great need of measures that will be able to handle these fluctuations of the production systems. Transforming the current grid to become a more intelligent system that could predict the variations as well as exploit hours with lower demand and, hence, lower electricity prices is one way to deal with the problems caused by the technology shifting. New projects that address those issues are constantly under deployment in recent years. In Sweden today there are three large demonstration projects, the Sustainable City Hyllie, Smart City Gotland and the Stockholm Royal Seaport.This paper investigates the technologies used in the three projects, how the goals that were set in the beginning of each project are being fulfilled, as well as the ways that the different actors are copying with the challenges and problems faced. The approach that was used includes a comparison of the projects with other successful finalized projects carried out throughout Europe. The methodology was divided in three smaller steps. The first step was the collection of data about all the technologies and all the investigated projects in Europe and Sweden. The second step was to construct a table where a significant number of technologies used by the projects were listed alongside with an indication on whether the implementation of the technologies is finished or ongoing. The results for the ongoing Swedish demonstration projects were iterated and checked by conducting interviews with key people inside the projects. Finally, using the data from the table some conclusions and results were extracted in the final part of the report.
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  • Result 1-10 of 18

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