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123 results on '"Azizivahed, Ali"'

7. An Efficient Scenario-based Stochastic Energy Management of Distribution Networks with Distributed Generation, PV Module, and Energy Storage

Author

Narimani, Mohammad Rasoul, Azizivahed, Ali, and Naderi, Ehsan

Subjects
Mathematics - Optimization and Control, Electrical Engineering and Systems Science - Signal Processing
Abstract

Incorporating Renewable Energy Sources (RES) incurs a high level of uncertainties to electric power systems. This level of uncertainties makes the conventional energy management methods inefficient and jeopardizes the security of distribution systems. In this connection, a scenario-based stochastic programming is introduced to harness uncertainties in the load, electricity price, and photovoltaic generation. Further, a hybrid evolutionary algorithm based on Grey Wolf Optimizer and Particle Swarm Optimisation algorithm is proposed to find the best operation cost, and Energy Not Supplied (ENS) as two important objective functions, which almost always are in stark contrast with each other. The proposed algorithm is applied to the modified IEEE 69-bus test system and the results are validated in terms of efficiency, which indicates a cogent trade-off between the fitness functions addressed above.

Published
2019

29. A Robust Participation in the Load Following Ancillary Service and Energy Markets for a Virtual Power Plant in Western Australia.

Author

Behi, Behnaz, Jennings, Philip, Arefi, Ali, Azizivahed, Ali, Pivrikas, Almantas, Muyeen, S. M., and Gorjy, Arian

Subjects
ENERGY industries, INTERNAL rate of return, MARKET power, ELECTRICITY markets, BIDDING strategies, POWER plants
Abstract

Virtual power plants (VPPs) are an effective platform for attracting private investment and customer engagement to speed up the integration of green renewable resources. In this paper, a robust bidding strategy to participate in both energy and ancillary service markets in the wholesale electricity market is proposed for a realistic VPP in Western Australia. The strategy is accurate and fast, so the VPP can bid in a very short time period. To engage customers in the demand management schemes of the VPP, the gamified approach is utilized to make the exercise enjoyable while not compromising their comfort levels. The modelling of revenue, expenses, and profit for the load-following ancillary service (LFAS) is provided, and the effective bidding strategy is developed. The simulation results show a significant improvement in the financial indicators of the VPP when participating in both the LFAS and energy markets. The payback period can be improved by 3 years to the payback period of 6 years and the internal rate of return (IRR) by 7.5% to the IRR of 18% by participating in both markets. The accuracy and speed of the proposed bidding strategy method is evident when compared with a mathematical method. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Energy Management in Reconfigurable Distribution Network Incorporating Renewable Energy Resources and Storage

Author

Azizivahed, Ali

Abstract

University of Technology Sydney. Faculty of Engineering and Information Technology. Besides the conventional distributed generators, penetration of renewable energy sources (RESs) and electrical energy storage (EES) systems in distribution systems is increasing, and it is crucial to investigate their impact on systems’ operation scheme, reliability, and security. Improving the energy not supplied (ENS) and voltage stability index (VSI) of distribution networks in dynamic distribution network reconfiguration, including RESs and EES systems, is a notable achievement in order to have an appropriate level of reliability and security in the distribution network operation plans. The optimal charging/discharging schemes for EES systems, optimal power dispatch for the conventional distributed generators, and optimal distribution network topology are presented in order to optimize the operational costs and reliability and security indices simultaneously. Moreover, due to the increasing participation of private generation units and the development of the energy market at the distribution level, an effective iterative approach to incentive calculation is presented in this thesis. The proposed approach considered the surplus benefit of the distribution system operator (DSO) as a financial source to remunerate the private generation units to reduce power loss and greenhouse gas (GHG) emission more. The DSO surplus benefit is obtained from the power loss and GHG emission reduction due to the operation of the private generation units in reconfigurable distribution networks. In addition, the contribution of each private unit is considered in the incentive calculation process using the sensitivity factor of each unit on the power loss and GHG emission. The main point of the proposed approach is on the significant reduction of the power loss and GHG emission by transferring the DSO surplus benefit to the private units. In order to demonstrate the efficiency of the proposed approach, it has been implemented on the 118-bus standard distribution test system modified by adding different types of distributed generation (DG) for all time intervals of a day.

Published
2022

48. Energy Management Strategy in Dynamic Distribution Network Reconfiguration Considering Renewable Energy Resources and Storage.

Author

Azizivahed, Ali, Arefi, Ali, Ghavidel, Sahand, Shafie-khah, Miadreza, Li, Li, Zhang, Jiangfeng, and Catalao, Joao P. S.

Abstract

Penetration of renewable energy sources (RESs) and electrical energy storage (EES) systems in distribution systems is increasing, and it is crucial to investigate their impact on systems’ operation scheme, reliability, and security. In this paper, expected energy not supplied (EENS) and voltage stability index (VSI) of distribution networks are investigated in dynamic balanced and unbalanced distribution network reconfiguration, including RESs and EES systems. Furthermore, due to the high investment cost of the EES systems, the number of charge and discharge is limited, and the state-of-health constraint is included in the underlying problem to prolong the lifetime of these facilities. The optimal charging/discharging scheme for EES systems and optimal distribution network topology are presented in order to optimize the operational costs, and reliability and security indices simultaneously. The proposed strategy is applied to a large-scale 119-bus distribution test network in order to show the economic justification of the proposed approach. [ABSTRACT FROM AUTHOR]

Published
2020
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