| 1. |
- Steen, David, 1983, et al.
(författare)
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Impact assessment of wind power and demand side management on day-ahead market prices
- 2015
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Ingår i: IEEE PES Innovative Smart Grid Technologies Conference Europe. - : IEEE Computer Society. ; 2015-January:January
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Konferensbidrag (refereegranskat)abstract
- This paper provides an approach to investigate the impacts of wind power (WP) and demand side management (DSM) on the day-ahead electricity market prices. A market model incorporating demand scheduling has been developed for the study, to assess whether there are any mutual economic benefits between WP and scheduling of electric heating demand. A case study performed on a representative Nordic system with a scenario for future WP development in the Nordic electricity market has been carried out. The study results show that DSM could reduce the revenue for the WP producers, up to 2%. On the other hand, WP could result in reduced heating cost, up to 10%, for the customers. However, with an objective of reducing the total system cost, customers in some areas could experience an increase in electricity price even after providing their flexible demand to the market.
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| 2. |
- Alikhani, Parnian, et al.
(författare)
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Forecasting the Electrical Demand at the Port of Gävle Container Terminal
- 2021
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Ingår i: 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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Konferensbidrag (refereegranskat)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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| 3. |
- Alikhani, Parnian, et al.
(författare)
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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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Ingår i: 2021 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT). - : Institute of Electrical and Electronics Engineers (IEEE). ; , s. 5-
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Konferensbidrag (refereegranskat)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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| 4. |
- Antonis, Papaemmanouil, et al.
(författare)
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A cost-benefit analysis of transmission network reinforcement driven by generation capacity expansion
- 2010
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Ingår i: IEEE Power & Energy Society (PES) General Meeting 2010, Minneapolis, USA, July 25 - 29, 2010. - 9781424483570
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Konferensbidrag (refereegranskat)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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| 5. |
- Antonis, Papaemmanouil, et al.
(författare)
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Improved Cost-Benefit Analysis for Market-Based Transmission Planning, A European Perspective
- 2013
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Ingår i: Energy Policy. - : Elsevier BV. - 0301-4215. ; 63, s. 215-223
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Tidskriftsartikel (refereegranskat)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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| 6. |
- Antonis, Papaemmanouil, et al.
(författare)
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Improved cost-benefit analysis for reliable long-term transmission planning
- 2011
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Ingår i: 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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Konferensbidrag (refereegranskat)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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| 7. |
- Arafat, Yasir, 1985, et al.
(författare)
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Experience from real tests on multiple smart meter switching
- 2015
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Ingår i: IEEE PES Innovative Smart Grid Technologies Conference Europe.
-
Konferensbidrag (refereegranskat)abstract
- Smart Meters (SMs) offer remote switching functionalities to the Distribution System Operators (DSOs). The DSO can switch the breaker of the SM of any customer remotely whenever needed. The DSOs are currently applying this technique for customers typically one by one when customers are changing their addresses or when contracts are terminated. The breaker functionalities of the SMs could be used for multiple customers, thereby opening up new possibilities to balance electricity consumption and production. How the technology has been functioning in practice has, however, not been fully investigated with regard to multiple SM switching. In this paper, the experience from real tests on simultaneous multiple SM switching is presented. The tests have been conducted to observe the effect of SM switching on power quality (PQ). Power Quality Meters (PQMs) had been used both at the substation as well as the customer level to measure the PQ during SM switching. This paper presents the results by showing current measurements during switching ON and OFF of multiple SMs belonging to each substation.
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| 8. |
- Arafat, Yasir, 1985, et al.
(författare)
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FEASIBILITY STUDY ON LOW VOLTAGE DC SYSTEMS USING SMART METER DATA
- 2013
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Ingår i: 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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Konferensbidrag (refereegranskat)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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| 9. |
- Arafat, Yasir, 1985, et al.
(författare)
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Field test on multiple Smart Meter switching to study the effect on power quality at customers level
- 2015
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Ingår i: 2015 IEEE Eindhoven PowerTech, PowerTech 2015. - : IEEE conference proceedings. - 9781479976935
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Konferensbidrag (refereegranskat)abstract
- Smart Meters (SMs) are undergoing an increasing deployment all over the world and have been introduced to several regions. The SMs generally have remotely accessible breakers which offer remote switching functionalities to the Distribution System Operators (DSOs). The DSOs have the possibility of using this unique functionality of SMs for various future applications, e.g., switching some loads during peak loads crisis or outage management during natural disasters. Under these conditions, the DSO can disconnect selected customers by using SM switching while continuing power supply to risk customers and emergency service providers. During multiple SM switching, the power quality (PQ) of the connected loads might be affected. This paper presents results on the impact of multiple SM switching at customer level. Data are used from a field test on multiple SM switching from a DSO in Sweden. The number of customers in this test was higher compared to the previous two tests of the work. Moreover, all customers in the selected test area were not switched in this test. Almost half of the customers in the test area were disconnected remotely using SMs while the other half of the customers remained connected with power supply to investigate the impact of SMs switching in a different way. This work observed some transient events during the SMs switching. Voltage quality was stable during the test except some flickering effects beyond the limit.
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| 10. |
- Arafat, Yasir, 1985, et al.
(författare)
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On Possibilities of Using Smart Meters for Emergency Grid Management : Analysing the Effect on Power Quality
- 2015
-
Ingår i: 2015 IEEE INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT ASIA). - 9781509012374
-
Konferensbidrag (refereegranskat)abstract
- Electricity grids worldwide are continuing to be severely constrained and stretched to capacity. Certain grid conditions e.g., peak load crisis or loss of generation may lead to severe under frequency situations. Load shedding can then be useful to prevent the national grid from being overwhelmed. Typically, load shedding is done from medium voltage substation level and all customers including emergency service providers under that substation lose power. However, it is beneficial for a society to exclude emergency service providers from load shedding. Smart Meters (SMs) are generally equipped with remotely accessible switch which gives a unique opportunity to exclude prioritized customers during emergency load shedding. Distribution System Operators (DSOs) are currently using remote SM switching typically for one customer at a time. However, the SM switching technique has not been fully investigated with regard to multiple customers. In order to fulfill the gap, this paper presents results obtained from field tests on simultaneous multiple SMs switching with a main focus on the impact of multiple SMs switching on Power Quality (PQ). The results show that impact on PQ might be negligible for small number of SMs switching. Moreover, faster SMs switching and reliable communication system is found as an important prerequisite to use SMs for emergency load shedding.
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