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planning-models
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Conflict Resolution of Water Resources Allocations using the Game Theoretic Approach:The Case of Orumieh River Basin
, M.Sc. Thesis Sharif University of Technology ; Abrishamchi, Ahmad (Supervisor)
Abstract
The unavoidable consequences of increased demand for, and decreased supply of, various natural resources, especially water, have caused increased conflict over their allocation. Water allocations merely based on a water rights approach usually do not make efficient use of water for the whole river basin. Thus, there is a need for a comprehensive and stable allocation method that can satisfy all the involved interest groups. One of these methods is game theory that can be used to allocate water resources among riparian parties regarding principles of equity, efficiency and sustainability. In this study, a comprehensive linear programming model has been developed firstly to achieve the optimal...
Using genetic algorithms for long-term planning of network of bridges
, Article Scientia Iranica ; Volume 26, Issue 5 A , 2019 , Pages 2653-2664 ; 10263098 (ISSN) ; Alvanchi, A ; Sharif University of Technology
Sharif University of Technology
2019
Abstract
Bridge maintenance activities are often budgeted, scheduled, and conducted for networks of bridges with different ages, types, and conditions, which can make bridge network maintenance management challenging. In this study, we propose an improved maintenance planning model based on genetic algorithm for a network of bridges to bring a long-term perspective to the lifespan of bridges. To test the applicability and efficiency of the model, it was applied to a network of 100 bridges in one of the south-western provinces of Iran. The results of the model implementation showed considerable potential for improvement over the currently adopted model for bridge maintenance planning. © 2019 Sharif...
Resiliency-oriented optimal siting and sizing of distributed energy resources in distribution systems
, Article Electric Power Systems Research ; Volume 208 , 2022 ; 03787796 (ISSN) ; Hosseini, S. H ; Ranjbar, H ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
Distribution systems are one of the most important infrastructures of each country which are exposed to numerous damages through unexpected events. The development of distributed energy resources (DERs) is one of the solutions which can bring several benefits to the operation and planning of distribution systems in both normal and event situations. This paper proposes a new multi-objective planning model for optimal siting and sizing of DERs in distribution systems to minimize the total planning costs including operation and active power loss costs, as the normal operation objective, and to minimize the expected prioritized load shedding exposed to an earthquake incident, as the resilience...
Climate Change Impact Assessment on Hydropower & Adaptive Management, Case Study: Karkheh River Basin
, Ph.D. Dissertation Sharif University of Technology ; Abrishamchi, Ahmad (Supervisor)
Abstract
Today climate change impacts are increasingly visible through their effects on hydrology and water resources. So it is encouraging to adaptive planning and to reduce unfavorable impacts. Until now, they have been accomplished several studies on climate change impacts across the world. One of these impacts is runoff reduction to reservoirs of hydropower dams. Depending on hydrologic conditions, hydropower provides 16 percent of world electricity and 13 percent of national electricity demand. Hydroelectric power’s low cost, near-zero pollution emissions, and ability to quickly respond to peak loads make it a valuable renewable energy source.Given the important role of hydropower in peak...
A risk-based resilient distribution system planning model against extreme weather events
, Article IET Renewable Power Generation ; Volume 16, Issue 10 , 2022 , Pages 2125-2135 ; 17521416 (ISSN) ; Ehsan, M ; Farzin, H ; Sharif University of Technology
John Wiley and Sons Inc
2022
Abstract
Due to the accelerated climate change, it is anticipated that the number and severity of natural disasters such as hurricanes, blizzards, and floods will be increased in the coming years. In this regard, this paper presents a distribution system planning model to improve the system resilience against hurricane. A scenario-based mathematical model is proposed to capture the random nature of weather events. Moreover, a stochastic optimization model is developed to simultaneously harden the distribution lines and place different types of distributed generation (DG) units such as microturbines (MTs), wind turbines (WTs), and photovoltaic cells (PVs). The conditional value at risk (CVaR) is used...
An Milp model for switch, DG, and tie line placement to improve distribution grid reliability
, Article IEEE Systems Journal ; 2022 , Pages 1-12 ; 19328184 (ISSN) ; Ehsan, M ; Farzin, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
Remote controlled switches (RCSs) have the ability to isolate the faulted area from other parts of the distribution system. On the other hand, the dispatchable distributed generators (DDGs) and tie lines can supply the interrupted loads after fault occurrence trough microgrids and reduce the outage time. In this regard, this article proposes a planning model for simultaneous placement of RCSs, DDGs, and tie lines to improve distribution system reliability. The presence of renewable distributed generations (RDGs) and energy storage systems, which have an increasing penetration in today's distribution networks are also considered. Moreover, two different practical load shedding methods are...
An interactive fuzzy multi-objective approach for short term DG planning
, Article International Journal of Innovative Computing, Information and Control ; Volume 8, Issue 6 , 2012 , Pages 4157-4175 ; 13494198 (ISSN) ; Ehsan, M ; Meyabadi, A. F ; Niknam, T ; Sharif University of Technology
2012
Abstract
This paper presents a short term multi-objective planning model for Distributed Generators (DGs) deployment in an electrical network. "Total Cost" and "Emission Cost" are two objective functions which have been going to be minimized in this model by finding the optimal schemes of sizing, placement and DG technologies over a short planning period (static planning). The proposed model can be used for a long term planning period (dynamic planning) in order to consider the timing concept. An interactive fuzzy satisfying method based on Chaotic Local Search and Modified Honey Bee Mating Optimization (CLS-MHBMO) is used to choose the final solution. The effectiveness of the proposed model and...
Distribution system planning considering integration of distributed generation and load curtailment options in a competitive electricity market
, Article Electrical Engineering ; Volume 93, Issue 1 , 2011 , Pages 23-32 ; 09487921 (ISSN) ; Abbaspour Tehrani Fard, A ; Poure, P ; Saadate, S ; Sharif University of Technology
Abstract
Distribution systems management is becoming an increasingly complicated issue due to the introduction of new technologies, new energy trading strategies and new deregulated environment. In the new deregulated energy market and considering the incentives coming from the technical and economical fields, it is reasonable to consider distributed generation (DG) as a viable option to solve the lacking electric power supply problem. This paper presents a mathematical distribution system planning model considering three planning options to system expansion and to meet the load growth requirements with a reasonable price as well as the system power quality problems. DG is introduced as an attractive...
A practical eco-environmental distribution network planning model including fuel cells and non-renewable distributed energy resources
, Article Renewable Energy ; Volume 36, Issue 1 , 2011 , Pages 179-188 ; 09601481 (ISSN) ; Ehsan, M ; Zareipour, H ; Sharif University of Technology
Abstract
This paper presents a long-term dynamic multi-objective planning model for distribution network expansion along with distributed energy options. The proposed model optimizes two objectives, namely costs and emissions and determines the optimal schemes of sizing, placement and specially the dynamics (i.e., timing) of investments on distributed generation units and network reinforcements over the planning period. An efficient two-stage heuristic method is proposed to solve the formulated planning problem. The effectiveness of the proposed model is demonstrated by applying it to a distribution network and comparing the simulation results with other methods and models
A new framework for large distribution system optimal planning in a competitive electricity market
, Article 2010 IEEE International Energy Conference and Exhibition, EnergyCon 2010, 18 December 2010 through 22 December 2010 ; 2010 , Pages 1-6 ; 9781424493807 (ISBN) ; Poure, P ; Abbaspour Tehrani Fard, A ; Saadate, S ; Sharif University of Technology
Abstract
Distribution systems management is becoming an increasingly complicated issue due to the introduction of new technologies, new energy trading strategies and new deregulated environment. In the new deregulated energy market and considering the incentives coming from the technical and economical fields, it is reasonable to consider Distributed Generation (DG) as a viable option to solve the lacking electric power supply problem. This paper presents a mathematical distribution system planning model considering three planning options to system expansion and to meet the load growth requirements with a reasonable price as well as the system power quality problems. DG is introduced as an attractive...
Competitive distribution system planning model integration of dg, interruptible load and voltage regulator devices
, Article Iranian Journal of Science and Technology, Transaction B: Engineering ; Volume 34, Issue 6 , 2010 , Pages 619-635 ; 10286284 (ISSN) ; Porkar, S ; Abbaspour Tehrani Fard, A ; Poure, P ; Saadate, S ; Sharif University of Technology
Abstract
Distribution systems management is becoming an increasingly complicated issue due to the introduction of new technologies, new energy trading strategies, and new deregulated environment. In the new deregulated energy market and considering the incentives coming from the technical and economical fields, it is reasonable to consider Distributed Generation (DG) as a viable option to solve the lacking electric power supply problem. This paper presents a mathematical distribution system planning model considering three planning options to system expansion and to meet the load growth requirements with a reasonable price as well as the system power quality problems. DG is introduced as an...
Multi-objective planning model for integration of distributed generations in deregulated power systems
, Article Iranian Journal of Science and Technology, Transaction B: Engineering ; Volume 34, Issue 3 , 2010 , Pages 307-324 ; 10286284 (ISSN) ; Ehsan, M ; Sharif University of Technology
2010
Abstract
This paper presents a long-term dynamic multi-objective model for distributed generation investment. The proposed model optimizes three objectives, namely active losses, costs and environmental emissions and determines the optimal schemes of sizing, sitting of DG units and specially the dynamics of investment over the planning period. The Pareto optimal solutions of the problem are found using a GA algorithm and finally a fuzzy satisfying method is applied to select the optimal solution considering the desires of the planner. The solutions of Pareto optimal front are analyzed to extract general useful information for planners about the appropriate DG technologies and placement schemes. The...
Optimal policy of energy innovation in developing countries: Development of solar PV in Iran
, Article Energy Policy ; Volume 37, Issue 3 , 2009 , Pages 1116-1127 ; 03014215 (ISSN) ; Saboohi, Y ; Ghofrani, M.B ; Sharif University of Technology
2009
Abstract
The purpose of this study is to apply managerial economics and methods of decision analysis to study the optimal pattern of innovation activities for development of new energy technologies in developing countries. For this purpose, a model of energy research and development (R&D) planning is developed and it is then linked to a bottom-up energy-systems model. The set of interlinked models provide a comprehensive analytical tool for assessment of energy technologies and innovation planning taking into account the specific conditions of developing countries. An energy-system model is used as a tool for the assessment and prioritization of new energy technologies. Based on the results of the...