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Stochastic capacity expansion planning of remote microgrids with wind farms and energy storage
, Article IEEE Transactions on Sustainable Energy ; Volume 6, Issue 2 , February , 2015 , Pages 491-498 ; 19493029 (ISSN) ; Bozorg, M ; Fotuhi Firuzabad, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2015
Abstract
A majority of remote power systems are going to be supplied by diesel-renewable resources such as wind and photovoltaic energy in the future. However, the unpredictable nature of wind generation increases the concern about the reliable operation of these isolated microgrids. Using energy storage systems (ESSs) is recently accepted as an efficient solution to the volatility and intermittency of renewable energy sources. In this paper, a stochastic programming based on the Monte Carlo approach is introduced for optimal planning of remote systems. So far, most literatures have focused exclusively on the energy storage initial sizing. However, capacity expansion of ESS through the time span can...
Reliability Studies of Modern Distribution Systems Integrated With Renewable Generation and Parking Lots
, Article IEEE Transactions on Sustainable Energy ; Volume PP, Issue 99 , 2016 ; 19493029 (ISSN) ; Fotuhi Firuzabad, M ; Moeini Aghtaie, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
Abstract
This paper investigates the role of parking lots in improving the reliability of renewable-based distribution systems, through provision of vehicle-to-grid (V2G) programs during outage events. In this regard, municipal parking decks are viewed as distributed energy storage systems and the amount of available energy from these units in random contingency events is probabilistically modeled for reliability studies. Appropriate stochastic models are also introduced to capture the volatility and intermittency of renewable sources. Moreover, it is discussed that how the adopted outage management scheme (OMS) in contingency events can affect the reliability level of customers. In response, several...
Comparing different scenarios for thermal enhanced oil recovery in fractured reservoirs using hybrid solar-gas steam generators, a simulation study
, Article Society of Petroleum Engineers - SPE Europec Featured at 78th EAGE Conference and Exhibition, 30 May 2016 through 2 June 2016 ; 2016 ; 9781613994573 (ISBN) ; Bashtani, F ; Tahmasebi, A ; Ayatollahi, S ; Al Wahaibi, Y. M ; Sharif University of Technology
Society of Petroleum Engineers
2016
Abstract
The application of the renewable energy sources, especially solar energy, for thermal enhanced oil recovery methods as an economical and environmental valuable technique has received many attractions recently. Concentrated Solar Power systems are capable of producing substantial quantities of steam by means of focused sunlight as the heat source for steam generation. This paper aims to investigate viability of using this innovative technology in fractured reservoirs to generate steam instead of using conventional steam generators. A synthetic fractured reservoir with properties similar to those of giant carbonate oil reserves in the Middle East was designed by using commercial thermal...
Investigating the impacts of microgrids and gas grid interconnection on power grid flexibility
, Article 2019 Smart Gird Conference, SGC 2019, 18 December 2019 through 19 December 2019 ; 2019 ; 9781728158945 (ISBN) ; Fattaheian Dehkordi, S ; Abbaspour, A ; Fotuhi Firuzabad, M ; Lehtonen, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
The introduction of microgrids (MGs) and renewable energy sources (RESs) has caused significant shifts in the operation of power systems. Despite many benefits, integration of RESs has emerged new issues in the power systems operation. One of the issues recently raised by some utilities, is the severe ramps which are seen in systems with high penetration of RES. On the other hand, the traditional flexible power plants could not provide the ramp required in these systems. As a result, flexible local resources in independent entities like MGs should be employed to tackle this issue in these systems. In this paper, a novel model is developed to investigate the effects of MGs and gas grid...
Assessing financial and flexibility incentives for integrating wind energy in the grid via agent-based modeling
, Article Energies ; Volume 12, Issue 22 , 2019 ; 19961073 (ISSN) ; Baetens, J ; Lotfi, S ; Vandevelde, L ; Van Eetvelde, G ; Sharif University of Technology
MDPI AG
2019
Abstract
This article provides an agent-based model of a hypothetical standalone electricity network to identify how the feed-in tariffs and the installed capacity of wind power, calculated in percentage of total system demand, affect the electricity consumption from renewables. It includes the mechanism of electricity pricing on the Day Ahead Market (DAM) and the Imbalance Market (IM). The extra production volumes of Electricity from Renewable Energy Sources (RES-E) and the flexibility of electrical consumption of industries is provided as reserves on the IM. Five thousand simulations were run by using the agent-based model to gather data that were then fit in linear regression models. This helped...
A flexibility-oriented model for distribution system expansion planning studies
, Article 27th Iranian Conference on Electrical Engineering, ICEE 2019, 30 April 2019 through 2 May 2019 ; 2019 , Pages 737-741 ; 9781728115085 (ISBN) ; Jooshaki, M ; Moeini Aghtaei, M ; Abbaspour, A ; Fotuhi Firuzabad, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
Employing more flexibility in power systems is one of the main challenges brought about by integrating more renewable energy sources in power systems. A promising way to overcome this challenge is to have local sources of flexibility in distribution level. In this respect, a novel approach is introduced in this paper for multi-stage distribution system expansion planning which jointly considers expansion of the network assets as well as flexibility enhancement. To this end, construction and reinforcement of feeders and substations are considered as various alternatives for network expansion. Moreover, installation of conventional dispatchable distributed generation units is selected as the...
Solar-hydrogen renewable supply system optimisation based on demand side management
, Article International Journal of Ambient Energy ; 2019 ; 01430750 (ISSN) ; Jafarinejad, T ; Badpar, F ; Sharif University of Technology
Taylor and Francis Ltd
2019
Abstract
Stand-alone hybrid power systems are an alternative to main electricity grids, where the grid extension is costly or the trifling local consumption would not justify its expansion. However, lack of consistency and uniformity in renewable energy sources, and the restrictions of energy storage systems make system sizing a challenging task. Optimum size of a stand-alone system depends on several factors including energy demand function. In this paper, different types of demand functions are addressed for optimising a solar-hydrogen supply system. Different parameters are defined to investigate the impact of household population on the power generation cost, and also to determine the optimum...
Solar-hydrogen renewable supply system optimisation based on demand side management
, Article International Journal of Ambient Energy ; 2019 ; 01430750 (ISSN) ; Jafarinejad, T ; Badpar, F ; Sharif University of Technology
Taylor and Francis Ltd
2019
Abstract
Stand-alone hybrid power systems are an alternative to main electricity grids, where the grid extension is costly or the trifling local consumption would not justify its expansion. However, lack of consistency and uniformity in renewable energy sources, and the restrictions of energy storage systems make system sizing a challenging task. Optimum size of a stand-alone system depends on several factors including energy demand function. In this paper, different types of demand functions are addressed for optimising a solar-hydrogen supply system. Different parameters are defined to investigate the impact of household population on the power generation cost, and also to determine the optimum...
Toward small scale renewable energy hub-based hybrid fuel stations: appraising structure and scheduling
, Article IEEE Transactions on Transportation Electrification ; Volume 6, Issue 1 , 2020 , Pages 267-277 ; Alahyari, A ; Farrokhifar, M ; Momeni, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2020
Abstract
In recent years, there has been a rapid change in the portfolio of road vehicles. This transformation needs to be supported by reshaping fuel stations. The existing structures can be modified to supply multiple vehicle types while utilizing renewable energies. In this article, we introduce a hybrid fuel station (HFS) to supply both electric and natural gas vehicles. We incorporate an energy hub and thoroughly explain the structure and components in detail. The configuration of the proposed HFS includes renewable energy sources (RESs), a power-to-gas unit (P2G), a natural gas distributed generator (NGDG), an energy storage device, a compressor, and a gas storage device. The optimal operation...
Incentive-based ramp-up minimization in multi-microgrid distribution systems
, Article 10th IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2020, 26 October 2020 through 28 October 2020 ; Volume 2020-October , 2020 , Pages 839-843 ; Tavakkoli, M ; Abbaspour, A ; Fotuhi Firuzabad, M ; Lehtonen, M ; IEEE Power and Energy Society ; Sharif University of Technology
IEEE Computer Society
2020
Abstract
Installation of renewable energy sources (RESs) in power systems has been dramatically increased due to clean nature and declining investment costs in recent years. This growing trend has led to new issues in the system operational management such as intense ramps inflicted on the network called system flexibility constraints. In this regard, due to decreasing the investment in bulk flexible resources, utilities would be significantly rely on local flexible ramp resources in the system to meet the supply-demand gap in each time-period. However, development of independently operated microgrids (MGs) as a result of restructuring and privatization in the power systems has imposed limitations...
PROWL: A Cache replacement policy for consistency aware renewable powered devices
, Article IEEE Transactions on Emerging Topics in Computing ; 2020 ; Abbasinia, M ; Ejlali, A ; Sharif University of Technology
IEEE Computer Society
2020
Abstract
Energy harvesting systems powered by renewable energy sources employ hybrid volatile-nonvolatile memory to enhance energy efficiency and forward progress. These systems have unreliable power sources and energy buffers with limited capacity, so they complete long-running applications across multiple power outages. However, a power outage might cause data inconsistency, because the data in nonvolatile memories are persistent, while the data in volatile memories are unsteady. State of the art studies proposed various memory architectures and compiler-based techniques to tackle the data inconsistency in these systems. These approaches impose too many unnecessary check-points on the system to...
Micro-grid stabilizer design using sliding mode controller
, Article International Journal of Electrical Power and Energy Systems ; Volume 116 , March , 2020 ; Parvari, R ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
Future of the network stability is endangered by increasing the number of Distributed Generation (DG) and Renewable Energy Source (RES) units. The idea of the Virtual Synchronous Machine (VSM) has been raised to control the power electronic-based DG/RES converters in order to have better integration with the grid. This paper introduces a new stabilizer design for VSM-based converters to guarantee the stability of the micro-grid (MG). In this regard, the Sliding Mode Control (SMC) theory, which is robust against the disturbances and uncertainties, is employed to cope with the intermittent and nonlinear nature of DGs. The mutual operation of the proposed inverter and MG stabilizer has the...
Prioritization of potential locations for harnessing wind energy to produce hydrogen in Afghanistan
, Article International Journal of Hydrogen Energy ; Volume 45, Issue 58 , November , 2020 , Pages 33169-33184 ; Hosseini Dehshiri, S. J ; Hosseini Dehshiri, S. S ; Jahangiri, M ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
Due to the devastating ecological effects and constrained reserves of fossil fuels, renewable energies are now globally accepted as viable alternative sources of energy. Among renewable energy sources, wind energy has become globally popular, primarily because wind farms can be rapidly built and easily maintained at a relatively low cost. Wind-powered hydrogen production is an effective solution for storing the excess energy output of wind farms. The hydrogen produced in this way can be used not only in fuel cells but also in cooling, oil, gas, and petrochemical fields. As a country devastated by war and instability, Afghanistan has major energy generation challenges and a substantially...
Considering forecasting errors in flexibility-oriented distribution network expansion planning using the spherical simplex unscented transformation
, Article IET Generation, Transmission and Distribution ; Volume 14, Issue 24 , 2020 , Pages 5816-5822 ; Jooshaki, M ; Moein Aghtaie, M ; Fotuhi Firuzabad, M ; Lehtonen, M ; Sharif University of Technology
Institution of Engineering and Technology
2020
Abstract
The rapid rise in the grid integration of low-carbon technologies, e.g. renewable energy sources (RESs) and plug-in electric vehicles (PEVs), has led to several challenges in distribution networks (DNs). This is due to the intermittent generation of RESs and uncertain loads of PEVs, both of which necessitate enhancing the flexibility requirements at the distribution level so as to accommodate the high penetration of these clean technologies in the future. To address such issues, this study proposes a mixed-integer linear programming-based expansion planning model for DNs considering the impact of high RES and PEV penetration, the associated uncertainties, and providing flexibility...
Flexibility-Oriented collaborative planning model for distribution network and EV parking lots considering uncertain behaviour of EVs
, Article 2020 International Conference on Probabilistic Methods Applied to Power Systems, PMAPS 2020, 18 August 2020 through 21 August 2020 ; 2020 ; Jooshaki, M ; Fotuhi Firuzabad, M ; Lehtonen, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2020
Abstract
Increasing grid integration of intermittent renewable energy sources (RESs) and plug-in electric vehicles (PEVs) with uncertain behaviours have necessitated enhancing the flexibility requirements of distribution networks. Thus, in the state-of-The-Art distribution network expansion planning (DNEP) models, both flexibility requirements and high penetration of RESs and PEVs should be taken into consideration. In this respect, a novel collaborative planning model for power distribution network (PDN) and plug-in Electric Vehicle Parking Lots (EVPLs) is proposed in this paper, which leverages sizing, siting, and operation of EVPLs to enhance the distribution network flexibility. Also, to model...
Energy performance and economic feasibility of hot spring-based district heating system – A case study
, Article Energy ; Volume 211 , 2020 ; Hakkaki Fard, A ; Jafari Mosleh, H ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
As a versatile platform for integrating renewable energies, District Heating systems (DHSs) offer a pragmatic approach toward an environmentally benign and sustainable future. This paper puts forward the feasibility evaluation of using geothermal hot spring source Heat pumps (HPs) for district heating of a village situated in the north-west of Iran, with a cold mountain climate. Solar collectors are also integrated into the DHS as a supplementary heat source. To this aim, three different renewable-energy-based district heating scenarios, viz. a Ground-Source-HP-based (GSHP), a combined GSHP-flat-plate-solar-collector (GSHP-SFPC), and a combined GSHP-linear-parabolic-solar-collector...
Marine hydrokinetic energy harvesting performance of diamond and square oscillators in tandem arrangements
, Article Energy ; Volume 202 , 2020 ; Esfehani, M. J ; Zeinoddini, M ; Naeeni, S. T. O ; Wu, J ; Shahvaghar Asl, S ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
The global demand for renewable energy sources has arisen significant research interests in marine hydrokinetic energy harvesting from flow induced vibrations. The current study deals with the hydrokinetic energy harvesting potentials of diamond and square oscillators at various inline configurations. Both the sharp edge sections and the wake induced vibrations in tandem arrangement can lead to galloping type of instability with high energy efficiency ratios. The present in-water towing tank experiments comprise 1DoF vibrating systems at Re ranging from 2 × 103 to 4.8 × 104. The results show that the upstream wake generally enhances the system efficiency and the mechanical work done by the...
A new framework for mitigating voltage regulation issue in active distribution systems considering local responsive resources
, Article IEEE Access ; Volume 9 , 2021 , Pages 152585-152594 ; 21693536 (ISSN) ; Abbaspour, A ; Mazaheri, H ; Fotuhi Firuzabad, M ; Lehtonen, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2021
Abstract
Recently, renewable energy sources (RESs) have increasingly being integrated into the power grids as a result of environmental and governmental perspectives. In this regard, the installation of RESs as potential power sources in active distribution systems would benefit the grid by decreasing the power losses, as well as addressing the fossil fuel shortages, and their environmental aspects. Nevertheless, the high-level integration of RESs as well as the development of distributed formations in local systems could challenge the reliable operation of the grid. In this context, conventional approaches could not optimally mitigate the regulation-voltage issue; therefore, utilities have to...
Investigating the effects of ESS technologies on high wind-penetration power grids considering reliability indices
, Article 2021 IEEE Texas Power and Energy Conference, TPEC 2021, 2 February 2021 through 5 February 2021 ; 2021 ; 9781728186122 (ISBN) ; Khoshiahan, M ; Moeini Aghtaie, M ; Fotuhi Firuzabad, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2021
Abstract
Energy storage systems (ESSs) play a vital role in dealing with uncertainties originated from the intermittent power generation of renewable energy sources (RESs) leading to improvement of flexibility and reliability of power systems. Needless to say, a key factor is selecting the best technology of ESSs which yields to maximum leverage of ESSs presence in power systems. On this basis, in this paper, a mixed integer linear programming (MILP) direct-optimization model is proposed to effectively mitigate the impacts of insufficient transmission lines capacities by installation of different ESS technologies using a DC optimal power flow model. Firstly, a precise model for the technical...
A linearized transmission expansion planning model under N − 1 criterion for enhancing grid-scale system flexibility via compressed air energy storage integration
, Article IET Generation, Transmission and Distribution ; 2021 ; 17518687 (ISSN) ; Moeini Aghtaie, M ; Fotuhi Firuzabad, M ; Dehghanian, P ; Khoshjahan, M ; Sharif University of Technology
John Wiley and Sons Inc
2021
Abstract
The concept of flexibility is defined as the power systems’ ability to effectively respond to changes in power generation and demand profiles to maintain the supply–demand balance. However, the inherent flexibility margins required for successful operation have been recently challenged by the unprecedented arrival of uncertainties, driven by constantly changing demand, failure of conventional units, and the intermittent outputs of renewable energy sources (RES). Tackling these challenges, energy storage systems (ESS) as one important player of the new power grids can enhance the system flexibility. It, therefore, calls for an efficient planning procedure to ensure flexibility margins by...