| 1. |
- Alikhani, Parnian, et al.
(author)
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Forecasting the Electrical Demand at the Port of Gävle Container Terminal
- 2021
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In: 2021 IEEE PES INNOVATIVE SMART GRID TECHNOLOGY EUROPE (ISGT EUROPE 2021). - : Institute of Electrical and Electronics Engineers (IEEE). ; , s. 806-811
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Conference paper (peer-reviewed)abstract
- The port industry is transforming into a smart port thanks to technological advancements and environmental expectations. Developing a sustainable maritime transportation system and its beneficial electrification as a proven approach in emissions reduction are gathering momentum due to technological growth. Global containerization leads to high electricity demand at container terminals, and the electricity demand is highly dynamic and dependent on different operation processes. The approach of this paper is to forecast the hourly peak load demand and short-term electricity demand profile in a container terminal. The correctly forecasted electricity demand profile is crucial for less expensive and reliable power operation and planning. First, Artificial Neural Network (ANN)method is used to predict the container terminal baseload demand. Second, the worst-case simultaneous peak load is estimated. Third, the day-ahead load profile is modeled based on the handling operation scheduled for the day. The approach is implemented at the container terminal in Port of Gävle, and the results, including the baseload forecasting, the peak power demand, and the hourly load profile modeling by 2030, have been used in dialogue with the local energy company for the future predicted need of load.
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| 2. |
- Alikhani, Parnian, et al.
(author)
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On the Reliability and Life Cycle Cost Analyses of Small-scale Standalone Solar Systems in Rural Areas
- 2021
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In: 2021 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT). - : Institute of Electrical and Electronics Engineers (IEEE). ; , s. 5-
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Conference paper (peer-reviewed)abstract
- In this paper, a three-step optimization approach is presented in order to obtain the optimal sizing of Standalone Photovoltaic (SPV) system. The main aim is to weigh the cost against the reliability of the system to make a smart design decision. The optimization approach has two objective functions to be minimized, Annual Lost Load (ALL) and Annual Life Cycle Cost (ALCC). The proposed method includes battery lifetime estimation, which is based on the active Depth of Discharge (DOD) of micro-cycles on the battery operation. The method has been applied to a remote area in Zambia. The results indicate that the introduced framework is capable of optimizing the system while satisfying the operational and economical requirements.
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| 3. |
- Antonis, Papaemmanouil, et al.
(author)
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A cost-benefit analysis of transmission network reinforcement driven by generation capacity expansion
- 2010
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In: IEEE Power & Energy Society (PES) General Meeting 2010, Minneapolis, USA, July 25 - 29, 2010. - 9781424483570
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Conference paper (peer-reviewed)abstract
- This paper assesses the effects of the future European power generation system with strict CO2 emission reduction targets on the planning of cross-border interconnection lines. Results from a techno-economic energy systems model have been used as input to this work, regarding the development of the European power generation system until the year 2050, meeting the EU 2020 CO2 target and a 85% emissions reduction until the year 2050. A simplified UCTE power system model was developed in order to analyze how the cross-border interconnections in continental Europe are affected by the generation plans using an iterative method. The paper also attempts to identify the congestion points and proposes solutions based on nodal price modeling. A cost-benefit analysis (CBA) is used to evaluate the appropriate transmission planning strategy, with the costs being the long-term investment costs and the benefits being both the avoided environmental costs and the total congestion costs. The effects of new investments on the nodal prices are also studied. The results show that the profitability of the investments is influenced by the available production mix and the forecasted CO2 prices. The avoided congestion costs participate rather insignificantly in the CBA, which means that congestions are not relieved, showing that many interconnections are insufficient for nodal pricing market structure.
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| 4. |
- Antonis, Papaemmanouil, et al.
(author)
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Improved Cost-Benefit Analysis for Market-Based Transmission Planning, A European Perspective
- 2013
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In: Energy Policy. - : Elsevier BV. - 0301-4215. ; 63, s. 215-223
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Journal article (peer-reviewed)abstract
- This paper addresses the problem of transmission planning in interconnected power systems under the uncertainty of future generation parks and fast varying marginal production costs. The decision maker has to consider many different aspects during the denition of dierent transmission planning strategies, that sometimes might even be contradicting. Major contributions are the incorporation of energy policy measurements in the evaluation process of candidate transmission plans and the inclusion of short and long-term uncertainties. The proposed methodology, so called C-TRAP, is based on a semi-dynamic heuristic approach, that solves the social welfare maximization problem for several discrete steps considering different preferences for energy policy and transmission network reinforcements. The flexibility provided through the heuristic analysis is very important for decision makers in the new uncertain environment in power systems.
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| 5. |
- Antonis, Papaemmanouil, et al.
(author)
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Improved cost-benefit analysis for reliable long-term transmission planning
- 2011
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In: 2011 IEEE PES Trondheim PowerTech: The Power of Technology for a Sustainable Society, POWERTECH 2011; Trondheim; 19 June 2011 through 23 June 2011. - 9781424484195
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Conference paper (peer-reviewed)abstract
- The aim of this paper is to incorporate reliabilityaspects in the transmission planning process presentedin previous work. The decision maker has to consider manydifferent aspects during the definition of transmission planning strategy, that sometimes might be contradicting. In the whole planning framework the decision is made by combining economic, environmental, and security of supply criteria in a single pseudodynamic algorithm. However, here only the part of security of supply is analyzed. After a sensitivity analysis for identification of critical/important transmission lines, a contingency analysis is performed and the probability of expected unserved energy is calculated together with the costs of expected unserved energy as an indicator. It is also shown that the amount of expected unserved energy is decreasing when additional transmission capacity is added to the connected lines of an unbalanced node. However, this may not be enough to reach zero unserved energy due to limitations of other transmission lines. After all,transmission network reinforcements can be evaluated based on benefits in avoided environmental costs, avoided congestion costs and avoided unserved energy costs in order to provide sufficient information to the decision maker.
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| 6. |
- Arafat, Yasir, 1985, et al.
(author)
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FEASIBILITY STUDY ON LOW VOLTAGE DC SYSTEMS USING SMART METER DATA
- 2013
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In: CIRED International Conference on Electricity Distribution Systems for a Sustainable Future, Stockholm, 10-13 June 2013.. - : Institution of Engineering and Technology. - 9781849197328 ; 2013:615 CP, s. Article no 0884-
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Conference paper (peer-reviewed)abstract
- The introduction of Smart Meter (SM) is a first stagetowards Smart Grid to develop future energy system. Themain difference of a SM with a traditional meter is thatinstead of only showing the current usage on the meteritself, it can also communicate the usage details directly to a Distribution System Operator. In order to make overallreduction in energy consumption, increasing awarenessabout the energy consumption is an important factor. TheSM data gives that facility by visualizing the energyconsumption in real time. The energy consumption can alsobe reduced by using low voltage Direct Current (DC)distribution in houses and offices. Several factors haveincreased the recent interest in DC power system. Thenumber of devices that operate on DC continues to increasein both homes and offices. Most of the devices requireAlternating Current (AC) to DC conversion between the ACsupply and the DC side of the device. These need ofconversion from 230V AC to low voltage DC inside the DCpower consuming apparatus results in a low overallefficiency of the AC system. This work focused on feasibility of using 230V AC to 48V DC converter with SM for a house with low voltage DC distribution system.
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| 7. |
- Arafat, Yasir, 1985, et al.
(author)
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Possibilities of demand side management with Smart Meters
- 2015
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In: International Conference on Electricity Distribution, CIRED 2015.
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Conference paper (peer-reviewed)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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| 8. |
- Arafat, Yasir, 1985, et al.
(author)
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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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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-
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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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| 9. |
- Babaei, Saman, et al.
(author)
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Effects of PHEVs in power distribution systems: reviews and analyses
- 2010
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In: CIRED Workshop on Sustainable Distribution Asset Management and Financing, 7-8 June 2010, Lyon, France.
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Conference paper (peer-reviewed)abstract
- This paper deals with the analysis of the impacts of plug-in hybrid electric vehicles (PHEVs) on the power system, with focus on the low voltage power distribution system. First a review of the technical challenges in the power system due to the mass introduction of PHEVs in the transportation sector is given. Then the paper shows on an analysis of the overloading effects of PHEVs on the distribution system with normal charging and quick charging of PHEVs for an IEEE 13-node distribution test system using power flow analysis. The results of the study show that introduction of PHEVs in the transportation sector will lead to overloading of distribution system and cause voltage problems at the end-users. The paper also analyzes the effects of PHEVs in the transmission system, using the Nordic 32-bus test system. The study results showed that the overloading problem is not prominent. However, one interesting and important result is that PHEVs may lead to overvoltages in some buses in the transmission system which requires the voltage control measures. PHEVs would also lead to increased number of network violations in the contingency analysis.
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| 10. |
- Babaei, Saman, et al.
(author)
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Effects of Plug-in Electric Vehicles on Distribution Systems: The Real Case of Gothenburg
- 2010
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In: IEEE PES Conference on Innovative Smart Grid Technologies Europe, Gothenburg, Sweden, October 10-13, 2010. - 9781424485109
-
Conference paper (peer-reviewed)abstract
- The electric power system is changing and, especially, the electrical distribution system will meet new features. One of the large changes is a transformation of the transportation sector with the use of electricity, with introduction of electrical vehicles and Plug-in Electric Vehicles (PEVs). This will pose new challenges and opportunities for the electric distribution companies. This paper analyzes the effects of PEVs charging on the local 400 V and 10 kV electric distribution systems in the city of Gothenburg, Sweden, using steady-state power flow analysis. Two different areas representing residential area and commercial area have been simulated for the worst-case scenario, which is simultaneous charging of all the vehicles during the peak load period. The number of PEVs used has been estimated based on the load level at each customer location. The study results have shown that overloading of lines would occur when simultaneous charging of the vehicles during the peak load period. There would, however, be no problem with the voltage drop at the customer’s location during PEVs charging. An iterative method is proposed to estimate the maximum number of possible vehicles charging in the distribution system without resulting in any line overloaded. This method is also applied when one of the feeders is on outage to ensure the N-1 reliability criterion.
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