| 1. |
- Arafat, Yasir, 1985, et al.
(författare)
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Possibilities of demand side management with Smart Meters
- 2015
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Ingår i: International Conference on Electricity Distribution, CIRED 2015.
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Konferensbidrag (refereegranskat)abstract
- There are problems with congestion during peak electricity demand periods for today’s grid infrastructure. As the demand has been sharply increasing day by day, the power reserve, as it is designed today, may be gradually phased out. Demand side management (DSM) can then be necessary to keep balance between the demand and the supply. By using Smart Meters (SMs), the Distribution System Operator (DSO) can manage the demand side during peak load crisis and decrease the risk of blackouts. The SM may allow the DSO to switch loads in an area using a customer’s prioritize list, while excluding emergency service providers and critical customers from switching. Moreover, switching multiple SMs at a time might have impact on the Power Quality (PQ) of the grid. This paper presents results from field test on multiple SMs switching and investigated the impact of SMs switching on the PQ of the electricity grid.
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| 2. |
- Arafat, Yasir, 1985, et al.
(författare)
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Remote switching of multiple smart meters and steps to check the effect on the grid's power quality
- 2014
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Ingår i: 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-
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Konferensbidrag (refereegranskat)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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| 3. |
- Balram, Pavan, 1986, et al.
(författare)
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Stochastic Model of Electricity Retailer Incorporating Aggregated Electric Vehicle Charging Uncertainty
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)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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| 4. |
- Bangalore, Pramod, 1983, et al.
(författare)
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Condition Monitoring and Asset Management in the Smart Grid
- 2016
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Ingår i: Wiley online library. - Chichester, UK : John Wiley & Sons. - 9781118755488 ; , s. 1-13
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- One of the main characteristics of a smart grid is the availability of large volumes of data, for example, gained from sensors. This data can be utilized as a tool to estimate the state of the system as a whole or any component within the system. In order to achieve actionable information from the variety of data that is available from smart grids, it is important to use the correct mathematical and signal processing tools. Furthermore, the future smart grid is expected to have high levels of reliability. This can be achieved by integrating the condition monitoring systems with maintenance management, wherein the focus is shifted from corrective maintenance to predictive condition-based maintenance.This chapter introduces the concept of reliability-centered asset management (RCAM). The RCAM approach provides the possibility of both qualitative and quantitative analysis toward optimal maintenance strategy. Furthermore, various issues with condition monitoring in smart grids have been discussed along with some literature that suggest possible solutions for these issues. Finally, a detailed case study of a data-based condition monitoring method based on artificial neural network is presented to demonstrate one of the many possibilities to use data from various measurement systems to reach actionable decisions.
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| 5. |
- Bangalore, Pramod, 1983, et al.
(författare)
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Self Evolving Neural Network Based Algorithm for Fault Prognosis in Wind Turbines : A Case Study
- 2014
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Ingår i: 2014 International Conference on Probabilistic Methods Applied to Power Systems (Pmaps). - 9781479935611
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Konferensbidrag (refereegranskat)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. |
- Bekele, Yared, et al.
(författare)
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Sustainable Off-grid Systems with Integration of Renewable Generation and Hydrogen-Fuel Cell
- 2022
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Ingår i: IEEE PES Innovative Smart Grid Technologies Conference Europe. - : Institute of Electrical and Electronics Engineers (IEEE).
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Konferensbidrag (refereegranskat)abstract
- This paper has investigated the role of renewable hydrogen produced from excess variable renewable energy (VRE) in reducing carbon emission and excess electricity curtailment in off-grid systems. The excess electricity produced from VRE is used for production of green hydrogen by electrolysis of water through Electrolyser in addition to serving deferrable load and battery storage systems (BSS). The hydrogen Produced from VRE sources is supplied to fuel cells to give electricity. The case study is based on modeling and simulation of off-grid systems with photovoltaics (PV) and wind turbines (WT) as two possible sources of power and, BSS and hydrogen as two possible storage media for an unelectrified small rural town called Gara Botora-Kemisie in Ethiopia. A Comparative analysis of the system with diesel generator (DG) and the system without DG is performed to identify a sustainable system for the selected site. Different case studies have been performed for comparison purposes. The results of the simulation show that, the system with PV, WT, BSS and hydrogen fuel cell is more sustainable and fossil free system and viable in reducing renewable energy curtailment.
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| 7. |
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| 8. |
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| 9. |
- Bertling Tjernberg, Lina, 1973, et al.
(författare)
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Panel Session on Smart Grid in Europe
- 2013
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Ingår i: IEEE Conference publications on-line.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)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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| 10. |
- Bertling Tjernberg, Lina, 1973
(författare)
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Samordningsrådet för Smarta Elnät
- 2013
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Ingår i: ELFACK 2013 Strategikonferens on-line.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)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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