Aydoḡan Özdemir
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View article: Multi-objective optimization of P2P energy trading for consumer–prosumer benefits and reliability improvement in LV distribution grids
Multi-objective optimization of P2P energy trading for consumer–prosumer benefits and reliability improvement in LV distribution grids Open
Integrating distributed generation into the main grid requires the active participation of both consumers and prosumers, offering technical and financial benefits for all stakeholders. This study proposes a multi-objective optimization app…
View article: Advanced restoration management strategies in smart grids: The role of distributed energy resources and load priorities
Advanced restoration management strategies in smart grids: The role of distributed energy resources and load priorities Open
Fast restoration following long outages is a challenge in the smart city management process. It is necessary to accurately characterize the real operating conditions of the system for optimal restoration. This study focuses on two key fact…
View article: A Topology Detector Based Power Flow Approach for Radial and Weakly Meshed Distribution Networks
A Topology Detector Based Power Flow Approach for Radial and Weakly Meshed Distribution Networks Open
Power distribution networks may need to be switched from one radial configuration to another radial structure, providing better technical and economic benefits. Or, they may also need to switch from a radial configuration to a meshed one a…
View article: Multi-Criteria Decision Making in Optimal Operation Problem of Unbalanced Distribution Networks Integrated With Photovoltaic Units
Multi-Criteria Decision Making in Optimal Operation Problem of Unbalanced Distribution Networks Integrated With Photovoltaic Units Open
The use of renewable energy sources is increasing day by day due to their economic and environmental benefits. However, improper penetration of renewable energy into power grids can lead to problems such as over-voltages and higher active …
View article: Guest editorial: Reliability and resilience modelling, assessment, and enhancement of modern power systems with proliferation of grid‐edge resources
Guest editorial: Reliability and resilience modelling, assessment, and enhancement of modern power systems with proliferation of grid‐edge resources Open
The electricity grid is constantly exposed and vulnerable to fast and slow-dynamic threats ranging from unpredictable faults and failures in system components, weather-driven natural disasters, malicious cybersecurity attacks, and other ra…
View article: Sequentially Coordinated and Cooperative Volt/Var Control of PV Inverters in Distribution Networks
Sequentially Coordinated and Cooperative Volt/Var Control of PV Inverters in Distribution Networks Open
Electric distribution grids are seeing an increased penetration of photovoltaic (PV) generation. High PV generation exceeding the grid load demand results in a reverse active power flow in the grid, which raises the voltage level. This pap…
View article: Reinforcement of the distribution grids to improve the hosting capacity of distributed generation: Multi-objective framework
Reinforcement of the distribution grids to improve the hosting capacity of distributed generation: Multi-objective framework Open
Excessive penetration of renewable energy resources into the distribution grid without additional preventive measures has led to several operational problems. However, most strategies developed to accommodate more renewable energy units su…
View article: Reactive Power Control of PV Inverters in Active Distribution Grids With High PV Penetration
Reactive Power Control of PV Inverters in Active Distribution Grids With High PV Penetration Open
Copyright . Photovoltaic (PV) systems can reduce greenhouse gas emissions while providing rapid reactive power support to the electric grid. At the distribution grid level, the PV inverters are controlled to reduce the system’s active powe…
View article: Impacts of Transactive Energy Trading on the Load Point Reliability Indices of LV Distribution System
Impacts of Transactive Energy Trading on the Load Point Reliability Indices of LV Distribution System Open
The optimal allocation of renewable energy sources and energy storage systems in medium-voltage distribution grids to achieve several objectives was followed by low-voltage applications. However, the main obstacle against large-scale renew…
View article: Optimum Parallel Processing Schemes to Improve the Computation Speed for Renewable Energy Allocation and Sizing Problems
Optimum Parallel Processing Schemes to Improve the Computation Speed for Renewable Energy Allocation and Sizing Problems Open
The optimum penetration of distributed generations into the distribution grid provides several technical and economic benefits. However, the computational time required to solve the constrained optimization problems increases with the incr…
View article: An Optimization Framework for Distributed Energy Resource Planning and Energy Management Strategy of Storage Devices and Electric Vehicles
An Optimization Framework for Distributed Energy Resource Planning and Energy Management Strategy of Storage Devices and Electric Vehicles Open
© 2022 IEEE.This paper proposes an optimal coordination strategy for electric vehicles and energy storage devices in distribution grids besides the optimal allocation problem of renewable distributed generation (RDGs) and energy storage de…
View article: Sequential Volt/Var Controller for PV Smart Inverters in Distribution Systems
Sequential Volt/Var Controller for PV Smart Inverters in Distribution Systems Open
© 2022 IEEE.Increased photovoltaic (PV) penetration in distribution systems helps improve the system\\"s performance by reducing the active power loss, in addition to the environmental benefits. However, high PV generation during light loa…
View article: Enhancing photovoltaic hosting capacity in distribution networks by optimal allocation and operation of static var compensators
Enhancing photovoltaic hosting capacity in distribution networks by optimal allocation and operation of static var compensators Open
© 2022 IEEE.This paper presents a novel two-stage optimization approach for the optimal sizing of static var compensators and their operational management to maximize the photovoltaic integration capacity of distribution systems. In the fi…
View article: An advanced Grey Wolf Optimization Algorithm and its application to planning problem in smart grids
An advanced Grey Wolf Optimization Algorithm and its application to planning problem in smart grids Open
Due to the complex mathematical structures of the models in engineering, heuristic methods which do not require derivative are developed. This paper improves recently developed Grey Wolf Optimization Algorithm by extending it with three ne…
View article: Optimization of Radio Interference Levels for 500 and 600 kV Bipolar HVDC Transmission Lines
Optimization of Radio Interference Levels for 500 and 600 kV Bipolar HVDC Transmission Lines Open
In this work, a method to compute the radio interference (RI) lateral profiles generated by corona discharge in high voltage direct current (HVDC) transmission lines is presented. The method is based on a transmission line model that consi…
View article: Development and Field Demonstration of a Gamified Residential Demand Management Platform Compatible with Smart Meters and Building Automation Systems
Development and Field Demonstration of a Gamified Residential Demand Management Platform Compatible with Smart Meters and Building Automation Systems Open
Demand management is becoming an indispensable part of grid operation with its potential to aid supply/demand balancing, reduce peaks, mitigate congestions and improve voltage profiles in the grid. Effective deployments require a huge numb…
View article: Management of Inverter-based Distributed Energy Resources for Providing Voltage Regulation Support in Islanded Operation of Low Voltage Networks
Management of Inverter-based Distributed Energy Resources for Providing Voltage Regulation Support in Islanded Operation of Low Voltage Networks Open
Growing number of inverter-based distributed energy resources (DERs) and sensitive loads increase the need for coordinated power management activities in islanded operation of microgrids. Especially low voltage networks have low inertia an…
View article: Identification and comparison of power and energy management capabilities of distributed energy resources
Identification and comparison of power and energy management capabilities of distributed energy resources Open
Distributed energy resources (DERs) can provide a number of functions to be used in grid services with proper establishment of control and communication systems. However, there are neither general standards for vendor independent integrati…
View article: GReSBAS project: A gamified approach to promote more energy efficient behaviours in buildings
GReSBAS project: A gamified approach to promote more energy efficient behaviours in buildings Open
The GReSBAS project (2016-2019) aims to enable the active participation of buildings in DR programs through gamified competition between building owners. In case of large buildings, gamified competition can be established within the buildi…
View article: A novel incentive-based retail demand response program for collaborative participation of small customers
A novel incentive-based retail demand response program for collaborative participation of small customers Open
Integration of aggregated demand response into the wholesale electricity market is an emerging field of research. Contrary to conventional service providers, most of the demand side participants act voluntarily. However, due to wholesale m…
View article: Impact of Renewable Based Microgrid Supply/Demand Profiles on Low Voltage Distribution Networks
Impact of Renewable Based Microgrid Supply/Demand Profiles on Low Voltage Distribution Networks Open
Integration of distributed generation (DG) from renewables into power systems has been one of the major challenges for operators. Impact of bidirectional power flow on the bus voltages and on the power losses is more severe in low voltage …
View article: Analysis of critical operating conditions for LV distribution networks with microgrids
Analysis of critical operating conditions for LV distribution networks with microgrids Open
Increase in the penetration of Distributed Generation (DG) in distribution networks, raises the risk of voltage limit violations while contributing to line losses. Especially in low voltage (LV) distribution networks (secondary distributio…
View article: Effects of shear stresses and rotary inertia on the stability and vibration of sandwich cylindrical shells with FGM core surrounded by elastic medium
Effects of shear stresses and rotary inertia on the stability and vibration of sandwich cylindrical shells with FGM core surrounded by elastic medium Open
The vibration and stability of axially loaded sandwich cylindrical shells with the functionally graded (FG) core with and without shear stresses and rotary inertia resting Pasternak foundation are investigated. The dynamic stability is der…