Article
Green & Sustainable Science & Technology
Agnieszka Szostok, Wojciech Stanek
Summary: Energy systems using Variable Renewable Energy (VRE) like solar and wind energy face challenges due to their intermittent nature caused by weather. Microgrids can overcome this by utilizing energy storage or backup generators. This article analyzes the advantages of individual RES sources and their cooperation in a microgrid and demonstrates that a mixed system based on solar irradiation, wind energy, and the participation of a biogas plant is the most advantageous option.
Article
Energy & Fuels
Heyang Yu, Qinjin Zhang, Yuji Zeng, Yancheng Liu, Youtao Zhao, Siyuan Liu
Summary: This article proposes a novel layered coordinated control scheme for reliable operation of a DC microgrid. The scheme includes inter-neighbor communication network, dynamic SoC equilibrium, precise power distribution, improved distributed control scheme for bus voltage regulation, and system-level energy flow regulation. The proposed scheme achieves better performance compared to existing methodologies, as demonstrated by Matlab/Simulink simulation and StarSim HIL experimental results.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Marine
Guoqiang Zhang, Irfan Ahmed Khan, Amil Daraz, Abdul Basit, Muhammad Irshad Khan
Summary: In seaports, low-carbon energy systems and energy efficiency are important for addressing environmental and climate change challenges. Technological advancements are needed in seaport vehicles, harbor cranes, and power sources of ships. A microgrid may be necessary to handle these aspects.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Hao Tian, Keqing Wang, Xiufeng Cui, Zexi Chen, Ergang Zhao, Sara Saeedi
Summary: This research focuses on the optimal planning of microgrids by incorporating renewable energy sources and conventional units. A multi-objective model is used to consider economic factors and energy management, while accounting for limitations and different energy sources for a more realistic approach. The model takes into account the uncertainty in production capacity of wind turbines and photovoltaics, and incorporates load uncertainty, price, and renewable energy production. Through a demand response program with incentives, the model aims to maximize profitability and minimize costs. To solve the conflicting objectives, a developed optimization algorithm based on teaching-learning and fuzzy theory is proposed.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
Gaurav Chaudhary, Jacob J. Lamb, Odne S. Burheim, Bjorn Austbo
Summary: A microgrid is an independent energy system that can operate in parallel with or independently from the main power grid, integrating renewable energy generation and energy storage systems. However, the efficient integration of energy storage systems faces various challenges and requires the support of energy management systems.
Article
Engineering, Multidisciplinary
Mohamed A. Sobhy, Almoataz Y. Abdelaziz, Hany M. Hasanien, Mohamed Ezzat
Summary: The paper discusses the critical role of Load Frequency Control (LFC) in modern power systems, incorporating conventional generators, RESs, and ES units. Utilizing PID controllers and the Marine Predators Algorithm (MPA) for optimization, the simulation results demonstrate the effectiveness of the proposed control scheme and the enhancement of transient responses by ES units.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Masoud Dashtdar, Aymen Flah, Seyed Mohammad Sadegh Hosseinimoghadam, Attia El-Fergany
Summary: In this paper, a self-tuning PI-controller based on a combination of genetic algorithm and artificial neural network is proposed for frequency control in microgrids. The controller can automatically adjust and optimize its coefficients and avoid being stuck in local minimum points. Simulation results show that the proposed controller performs well.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Hao Li, Lijun Fu, Yan Zhang, Yiyong Xiong
Summary: This paper proposes a dynamic and cooperative control strategy for multi-hybrid energy storage systems based on state of charge (SOC). The strategy achieves stable control of high-energy battery (HEB) current and improves the operation stability and economy of DC microgrid.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Thermodynamics
I. L. R. Gomes, R. Melicio, V. M. F. Mendes
Summary: This paper presents a microgrid support management system based on a stochastic mixed-integer linear programming problem, managed and operated by a new electricity market agent, the microgrid aggregator. Plausible scenarios are computed using Kernel Density Estimation to characterize random variables, and a scenario reduction is carried out with a two-tier procedure involving K-means clustering technique and a fast backward scenario reduction method. Case studies demonstrate the performance of the microgrid and validate the methodology proposed for the microgrid support management system.
Article
Engineering, Electrical & Electronic
Christian Peter, Evangelos Vrettos, Felix N. Buchi
Summary: This study focuses on testing a novel Power-to-Gas-to-Power platform using proton exchange membrane technologies and pure oxygen. The tests show that the platform has good ramping capabilities and can contribute to the stability of the power system and the integration of renewable energy.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Mathematics
Mohamed Khamies, Salah Kamel, Mohamed H. Hassan, Mohamed F. Elnaggar
Summary: In this paper, an effective frequency control strategy is proposed to improve frequency stability by emulating sufficient inertia power using virtual inertia control and superconducting magnetic energy storage. The parameters of the proposed strategy are selected using optimization techniques, and an improved optimization algorithm called ISNS is used to determine the optimal parameters. Simulation results show that the proposed strategy outperforms other techniques, especially in high penetration of renewable energy and lack of system inertia.
Article
Environmental Sciences
Hasan Huseyin Coban, Aysha Rehman, Mohamed Mousa
Summary: Energy security is crucial for the development of microgrid applications. The use of energy storage systems in microgrids helps stabilize renewable energy generation, participate in frequency regulation, and maintain energy balance.
Article
Energy & Fuels
Mohammad Esmaeil Hassanzadeh, Majid Nayeripour, Saeed Hasanvand, Eberhard Waffenschmidt
Summary: This paper proposes an optimal control strategy based on fuzzy logic control to support frequency regulation in microgrids. The strategy includes supplementary control units to protect the battery and manage the state of charge. Simulation results demonstrate the effectiveness of the proposed control strategy.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
Yu-Chung Tsao, Thuy-Linh Vu
Summary: This paper proposes a two-stage approach to solving the optimal capacity, location, and allocation problems of energy storage systems in microgrids. In the first stage, a continuous approximation approach is used to formulate the long-term problems of storage system location, capacity, and renewable energy investment. In the second stage, the quantity dispatch problems are addressed to minimize operational costs. The results show that this approach can achieve cost minimization.
Article
Green & Sustainable Science & Technology
Abhishek Saxena, Ravi Shankar
Summary: This study explores the impact of demand response and hybrid energy storage on frequency regulation in power systems. A control model for a hybrid hierarchical demand response mechanism is developed and an optimization algorithm for the controller is proposed. The results demonstrate the superiority of the proposed algorithm and the feasibility of the technique in experiments.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Angelina D. Bintoudi, Lampros Zyglakis, Apostolos C. Tsolakis, Dimosthenis Ioannidis, Lenos Hadjidemetriou, Lazaros Zacharia, Nisrein Al-Mutlaq, Mohammad Al-Hashem, Salem Al-Agtash, Elias Kyriakides, Charis Demoulias, Dimitrios Tzovaras
IET RENEWABLE POWER GENERATION
(2020)
Review
Energy & Fuels
Konstantinos Oureilidis, Kyriaki-Nefeli Malamaki, Konstantinos Gallos, Achilleas Tsitsimelis, Christos Dikaiakos, Spyros Gkavanoudis, Milos Cvetkovic, Juan Manuel Mauricio, Jose Maria Maza Ortega, Jose Luis Martinez Ramos, George Papaioannou, Charis Demoulias
Article
Green & Sustainable Science & Technology
Georgios C. Kryonidis, Charis S. Demoulias, Grigoris K. Papagiannis
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Charis S. Demoulias, Kyriaki-Nefeli D. Malamaki, Spyros Gkavanoudis, Juan Manuel Mauricio, Georgios C. Kryonidis, Konstantinos O. Oureilidis, Eleftherios O. Kontis, Jose Luis Martinez Ramos
APPLIED SCIENCES-BASEL
(2020)
Article
Engineering, Electrical & Electronic
Evangelos E. Pompodakis, Georgios C. Kryonidis, Charis Demoulias, Minas C. Alexiadis
Summary: This paper introduces a precise power flow algorithm for islanded hybrid AC/DC microgrids, demonstrating fast convergence and robustness regardless of the R/X ratio of the lines. Numerical simulations and case studies verify the accuracy and computational performance of the proposed approach in various relevant configurations.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2021)
Review
Energy & Fuels
Aikaterini Forouli, Emmanouil A. Bakirtzis, Georgios Papazoglou, Konstantinos Oureilidis, Vasileios Gkountis, Luisa Candido, Eloi Delgado Ferrer, Pandelis Biskas
Summary: Power systems in many countries are transitioning towards renewable and carbon-free generation sources, posing new challenges to grid operation. Advanced policy strategies and technologies are required to provide flexible solutions due to the diversity of needs and regulations across European countries. This article reviews the deployment of demand side flexibility at national level in the United Kingdom, Belgium, Italy and Greece, aiming to explore new approaches for integrating flexible assets in the distribution grid.
Article
Green & Sustainable Science & Technology
Georgios C. Kryonidis, Kyriaki-Nefeli D. Malamaki, Spyros Gkavanoudis, Konstantinos O. Oureilidis, Eleftherios O. Kontis, Juan Manuel Mauricio, Jose Maria Maza-Ortega, Charis S. Demoulias
Summary: This article introduces a novel control strategy for voltage regulation in unbalanced low-voltage distribution grids with high penetration of distributed renewable energy sources (DRESs), utilizing the reactive power of DRESs and a distributed control architecture. The strategy prioritizes the response of DRESs to maintain network voltages within permissible limits and minimize network losses, demonstrated through simulations on the IEEE European LV test feeder.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2021)
Article
Engineering, Electrical & Electronic
Georgios K. Papazoglou, Aikaterini A. Forouli, Emmanouil A. Bakirtzis, Pandelis N. Biskas, Anastasios G. Bakirtzis
Summary: This paper proposes a novel Successive Linear Programming algorithm for Optimal Power Flow in the Distribution Network, and applies it to a Day-Ahead Local Flexibility Market in the distribution network. The algorithm is robust and efficient, validated through its application in various scenarios. Additionally, a case study demonstrates the effectiveness of the proposed Flexibility Market in addressing operational issues in the distribution network.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Multidisciplinary
I. G. Marneris, A. V. Ntomaris, P. N. Biskas, C. G. Baslis, D. I. Chatzigiannis, C. S. Demoulias, K. O. Oureilidis, A. G. Bakirtzis
Summary: This paper presents a holistic approach to derive the optimal offering strategy of a price-taker RES aggregator in the day-ahead energy and ancillary services markets.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Energy & Fuels
Pavlos Papageorgiou, Konstantinos Oureilidis, Anna Tsakiri, Georgios Christoforidis
Summary: Employment of a battery energy storage system is essential for a resilient microgrid, but the short-term cyclic activity and high di/dt of energy-type batteries can reduce their lifespan. The power-type supercapacitor energy storage system (SCES), however, has almost zero lifetime degradation. Hence, the hybridization of SCES and battery units can reduce battery stress levels. This study proposes a decentralized droop control algorithm for a SCES/battery hybrid energy storage system employed in a solar/wind DC microgrid, which effectively eliminates the short-term cyclic operation of the battery.
Article
Engineering, Electrical & Electronic
Alvaro Rodriguez del Nozal, Eleftherios O. Kontis, Juan M. Mauricio, Charis S. Demoulias
IET GENERATION TRANSMISSION & DISTRIBUTION
(2020)
Article
Engineering, Electrical & Electronic
Spyros I. Gkavanoudis, Dimitrios Tampakis, Kyriaki-Nefeli D. Malamaki, Georgios C. Kryonidis, Eleftherios O. Kontis, Konstantinos O. Oureilidis, Jose Maria Maza-Ortega, Charis S. Demoulias
IET GENERATION TRANSMISSION & DISTRIBUTION
(2020)