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An Energy Sharing Model among Smart Energy Hubs Based on Blockchain Concept
, M.Sc. Thesis Sharif University of Technology ; Ranjbar, Ali Mohammad (Supervisor) ; Sheikhi, Aras (Supervisor)
Abstract
In the light of rapid advancement in renewable energy technologies, they become an appropriate way to supply energy demands with lower costs. It also gives them the chance to earn money by selling surplus energy to other energy consumers. The coordination of different energy types and the ability of energy conversion, facilitates the rising of new energy prosumers called “Smart Energy Hub(SEH)”. This thesis proposes a model of energy trading among SEHs. The model consists of SEHs, energy utility grids, energy consumers and aggregator. In this model, aggregator aggregates between SEHs, energy consumers and utility grids in order to maximize its profit. Bilevel optimization problem has been...
Optimal operation of a virtual power plant in frequency constrained electricity market
, Article IET Generation, Transmission and Distribution ; Volume 13, Issue 11 , 2019 , Pages 2015-2023 ; 17518687 (ISSN) ; Rayati, M ; Ranjbar, A. M ; Sharif University of Technology
Institution of Engineering and Technology
2019
Abstract
In this study, optimal offering strategy problem of a virtual power plant (VPP) as a price-maker player in day-ahead frequency constrained electricity market is presented. The optimal offering strategy problem is modelled as a bi-level optimisation problem. In the upper-level problem, the total profit of VPP is maximised. In the lower-level problem, the clearing conditions of frequency constrained electricity market are modelled. The proposed bi-level optimisation problem is reformulated as a mathematical programming with equilibrium constraints (MPEC) problem by using Karush-Kuhn-Tucker conditions. Then, the proposed MPEC problem, which is non-linear and hard to solve by commercial solvers,...
Developing a market-oriented approach for supplying flexibility ramping products in a multimicrogrid distribution system
, Article IEEE Transactions on Industrial Informatics ; Volume 17, Issue 10 , 2021 , Pages 6765-6775 ; 15513203 (ISSN) ; Salehi, J ; Moeini Aghtaie, M ; Sharif University of Technology
IEEE Computer Society
2021
Abstract
Rapid growth of the variable and intermittent renewable generation in multimicrogrid distribution network (MMG-DN) has derived a gross violation in power balance due to the scarcity of ramp capacity. To neutralize this shortage, the present study develops a market-oriented approach for supplying flexibility ramping products (FRPs) in an MMG-DN. In this article, the proposed approach appraises a ramping capacity of local microgrids (MGs), which encompass various distributed energy resources through a bilevel programming. To do so, an interval-based security constraint economic dispatch process is accomplished at the upper level considering the network's requirement of upward/downward ramp...