Article
Automation & Control Systems
Santanu Kumar Dash, Pravat Kumar Ray
Summary: This article introduces a novel topology for a photovoltaic fed open unified power quality conditioner, which focuses on the requirement of voltage sensitive loads. By incorporating adaptive controllers, the system is able to increase robustness and adaptability to various grid conditions. Experimental results show satisfactory performance of the proposed controllers in laboratory settings.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Engineering, Electrical & Electronic
Shuai Lu, Wei Gu, Yijun Xu, Zhao Yang Dong, Lingling Sun, Hao Zhang, Shixing Ding
Summary: This study proposes a robust nodal pricing (RNP) model for thermal loads in integrated energy systems (IES) under uncertainty. The model adopts a bilevel framework with the IES operator as the leader and the thermal load aggregators (TLA) as the followers. The IES operator optimizes heat prices and dispatch plans, while the TLA optimizes thermal loads to minimize energy costs and thermal comfort losses. Case studies compare different pricing methods and confirm the superiority of the proposed approach.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Electrical & Electronic
Hyung-June Cho, Yong-Cheol Kwon, Seung-Ki Sul
Summary: This article analyzes the instantaneous flux trajectory and voltage vector of a permanent-magnet synchronous machine in the six-step operation, proposing a time-optimal voltage vector transition scheme to enhance dynamic performance significantly. Simulation and experimental results validate the effectiveness of the proposed scheme, showing over 50% reduction in settling time and 60% reduction in peak current compared to conventional methods.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Analytical
Mehdi Firouzi, Saleh Mobayen, Hossein Shahbabaei Kartijkolaie, Mojtaba Nasiri, Chih-Chiang Chen
Summary: This paper presents an integrated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) system to improve voltage quality and limit fault current in distribution systems. The BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system, with ports located at the beginning and end of sensitive loads' feeder. The operation principle, control system design, and efficiency verification of the BSFCL-DVR system are discussed and demonstrated through PSCAD/EMTDC simulation.
Article
Chemistry, Multidisciplinary
Gyuyeol Kong, Minchae Jung
Summary: This paper proposes a tabu search aided multi-track detection scheme for bit patterned magnetic recording. The proposed scheme adopts a simplified multi-track detector with a two-dimensional generalized partial response target, uses a priori information, and employs a reliability test and a tabu search detector. The proposed scheme processes signals in three stages, and achieves better performance compared to conventional schemes.
APPLIED SCIENCES-BASEL
(2022)
Article
Green & Sustainable Science & Technology
Bonu Ramesh Naidu, Prabodh Bajpai, Chandan Chakraborty, Muli Malakondaiah, Boddeti Kalyan Kumar
Summary: This paper proposes a control strategy for VFRT operation with adaptive DVS scheme using energy storage in a microgrid. It presents the condition for maximum DVS and the dependency on the parameters of the equivalent network. To overcome the impediments of real-time parameter estimation, reference current signals based on the extreme voltage tracking algorithm are proposed. A control strategy is then proposed for energy storage-based VFRT operation, and a unique methodology of sizing the energy storage is presented. The proposed strategy is validated through real-time digital simulation and demonstrated scalability using the CIGRE distribution test network.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Bonu Ramesh Naidu, Prabodh Bajpai, Chandan Chakraborty, Muli Malakondaiah, Boddeti Kalyan Kumar
Summary: This paper presents a control strategy for enabling voltage fault ride-through operation in a microgrid using adaptive dynamic voltage support. The conditions for maximum dynamic voltage support and the dependency on the microgrid's equivalent network parameters are explained. A reference current signal-based control strategy is proposed to achieve adaptive dynamic voltage support under varying system conditions. The sizing of energy storage for voltage fault ride-through operation is also discussed. Real-time digital simulation case studies validate the proposed control strategy and the scalability of the approach is illustrated using the CIGRE distribution test network.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2023)
Article
Automation & Control Systems
G. S. Athira, C. M. Archana, R. Sudharshan Kaarthik, P. P. Rajeevan
Summary: Induction generators (IG) with open-end stator windings are proposed in this article for simultaneous supply of regulated power to frequency insensitive ac-loads and dc-link loads. The system utilizes scalar-control of the induction machine, making it a simple and robust system for supplying active power to both ac and dc loads. The proposed control scheme has been verified through simulations and experiments with various types of ac loads.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Qian Xiao, Jinyu Wang, Yu Jin, Linglin Chen, Hongjie Jia, Tomislav Dragicevic, Remus Teodorescu
Summary: The article proposes a novel operation scheme for SM faults in medium-voltage MMC applications, which enhances the ride-through capability of MMC under fault conditions. By controlling capacitor voltages and injecting zero-sequence voltage to maintain the normal operation of MMC, as well as applying the concept of virtual voltage to simplify the modulation process under SM faults.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Anjunguo Huang, Xianyong Xiao, Ying Wang
Summary: An immunity assessment method for the assembly line process is proposed in this study, fully considering the relationship between logistics line and power line, and thoroughly portraying the relationship between equipment and its links to evaluate the immunity of the whole manufacturing process. The results show that the deviation of the evaluation obtained by the proposed method is relatively small, indicating an accurate evaluation of the process immunity.
Article
Engineering, Electrical & Electronic
Mohammed Ali Khan, Ahteshamul Haque, V. S. Bharath Kurukuru, Huai Wang, Frede Blaabjerg
Summary: This study proposes a control technique to improve the efficiency of distributed generation inverters, which can operate in both grid-connected and stand-alone mode. By using a harmonic elimination pulsewidth modulation scheme, harmonics are eliminated and total harmonic distortions are reduced to enhance performance. The results show that the output voltage is regulated for varying load conditions, with a THD of 2.4% observed under different load conditions.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Hakyung Chae, Chang-Hyun Park
Summary: This paper presents a voltage sag assessment method that considers the voltage tolerance characteristic of multiple loads in a power system. The proposed method effectively assesses the impact of voltage sags by considering both rectangular and diagonal voltage tolerance curves. It also estimates the voltage sag duration using a probability model based on historical data. The method reduces computational burden while achieving similar results to existing methods.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Shanshan Zhao, Yu Chen, Shenghui Cui, Benedict Justin Mortimer, Rik W. De Doncker
Summary: This study proposes an operation scheme that enables fully independent three-port bidirectional operation of MMDC, expanding its application scope and simplifying the complexity of power flow control.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Rongwu Zhu, Marco Liserre, Marius Langwasser, Chandan Kumar
Summary: To address the impact of low-carbon technologies on the network, smart transformers are proposed as an intelligent solution for the future grid.
IEEE INDUSTRIAL ELECTRONICS MAGAZINE
(2021)
Article
Computer Science, Information Systems
Arash Fakour, Seyed-Sadra Jodeiri-Seyedian, Mehdi Jalali, Kazem Zare, Sajjad Tohidi, Saeid Ghassem Zadeh, Miadreza Shafie-Khah
Summary: This paper investigates the impacts of conservation voltage reduction (CVR) on electricity prices, the local market, and technical issues in distribution networks. The proposed methodology includes a power tracing and loss allocation-based pricing method, and a bi-level optimization algorithm is deployed to consider the financial benefits of all participating agents. The operation costs/profits of DSO/prosumers decrease/increase during CVR and DR programs by 4.63% / 3%, respectively.
Article
Engineering, Electrical & Electronic
Renzo Vargas, Leonardo H. Macedo, Juan M. Home-Ortiz, Jose Roberto Sanches Mantovani, Ruben Romero
Summary: This article introduces a new mixed-integer second-order cone programming model for solving the restoration problem in active distribution systems with distributed generators, voltage regulators, on-load tap changers, and capacitor banks. Tests on a 53-node system show that the proposed approach outperforms radial configurations and that voltage control can lead to more efficient restoration schemes.
IEEE TRANSACTIONS ON SMART GRID
(2021)
Article
Computer Science, Information Systems
Mauro Viegas da Silva, Juan M. Home-Ortiz, Mandi Pourakbari-Kasmaei, Jose Roberto Sanches
Summary: This paper presents a convex optimization model to solve the optimal power flow problem, transforming a two-level optimization problem into a one-level convex optimization model using the concept of strong duality. Comparisons of the proposed modeling with other level formulations are demonstrated on IEEE14 and IEEE30 bus systems.
IEEE LATIN AMERICA TRANSACTIONS
(2022)
Article
Geography, Physical
Jose Roberto Mantovani, Guilherme Taitson Bueno
Summary: In this work, a mapping methodology of planation surfaces based on automated altimetric stratification is proposed. The methodology utilizes mathematical concepts and automatic clustering to distinguish planation surfaces and elevation, revealing the relief organization of a region and its relationship with soil distribution.
REVISTA BRASILEIRA DE GEOMORFOLOGIA
(2022)
Article
Engineering, Multidisciplinary
Juan M. Home-Ortiz, Leonardo H. Macedo, Renzo Vargas, Ruben Romero, Jose Roberto Sanches Mantovani, Joao P. S. Catalao
Summary: This article presents a novel mixed-integer second- order cone programming model to increase the photovoltaic (PV) hosting capacity and optimize the operation of distribution networks. The problem considers voltage and reactive (Volt/VAr) control. The proposed formulation demonstrates its effectiveness in increasing the penetration of PV sources.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Multidisciplinary
Juan M. Home-Ortiz, Ozy D. Melgar-Dominguez, Mohammad S. Javadi, Jose Roberto Sanches Mantovani, Joao P. S. Catalao
Summary: This article presents a restoration approach that improves the resilience of electric distribution systems by combining dynamic network reconfiguration, islanding operation of distributed generation units, and the prepositioning and displacement of emergency generation units. The approach also considers the use of demand response programs to enhance recoverability. The objective is to separate the in-service and out-of-service parts of the system while maintaining grid radiality.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Ozy D. Melgar-Dominguez, Darwin A. Quijano, Jose R. Sanches Mantovani, Gianfranco Chicco
Summary: This work proposes a strategy to estimate the maximum distributed generation capacity that can be connected to the electric distribution system and minimize the upgrading cost. The strategy involves a multiobjective optimization model, upgrading options, and post-optimization analysis to increase the system capacity and improve the operator's profit.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2022)
Article
Energy & Fuels
Leonardo H. Macedo, Juan M. Home-Ortiz, Renzo Vargas, Jose R. S. Mantovani, Ruben Romero, Joao P. S. Catalao
Summary: This paper presents a novel scenario-based stochastic mixed-integer second-order cone programming model for the optimal reconfiguration of distribution systems with renewable energy sources considering short-circuit constraints. The proposed model minimizes technical losses by modifying the statuses of sectionalizing and tie switches, allowing the operation of distribution networks with radial and closed-loop topologies.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Energy & Fuels
Juan M. Home-Ortiz, Ozy D. Melgar-Dominguez, Jose Roberto Sanches Mantovani, Joao P. S. Catalao
Summary: This paper presents an innovative strategy to assess the hosting capacity of photovoltaic-based distributed generation in electrical distribution systems under normal and emergency conditions. The proposed strategy improves system recoverability by coordinating topology reconfiguration, islanding operation, and deployment of mobile distributed generation units.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Energy & Fuels
Lucas do Carmo Yamaguti, Juan Manuel Home-Ortiz, Mahdi Pourakbari-Kasmaei, Jose Roberto Sanches Mantovani
Summary: This paper proposes a multiobjective economic/environmental optimal power flow problem using a second-order conic programming (SOCP) model. It considers renewable energy sources, fossil-fuel-based power generation units, and voltage control. The proposed SOCP model adopts a stochastic scenario-based approach to deal with uncertainties in renewable energy sources and load behavior. The results show that the change in energy matrices directly affects the cost of objective functions, and using a linearized SOCP model reduces reactive power violation but increases computational time.
Article
Engineering, Electrical & Electronic
Juan M. Home-Ortiz, Ozy D. Melgar-Dominguez, Mohammad Sadegh Javadi, Matthew B. Gough, Jose Roberto Sanches Mantovani, Joao P. S. Catalao
Summary: This paper presents a planning and operational strategy to improve the recoverability of distribution systems (DSs) and optimize the allocation of dispatchable distributed generation (DG) units. The strategy coordinates a dynamic restoration process using various techniques and captures the uncertainties associated with solar irradiation and demand. Numerical results from simulations on test systems demonstrate the advantages of simultaneously solving the planning and operational stages for improving system recoverability.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Environmental Sciences
Jose Roberto Mantovani, Guilherme Taitson Bueno, Enner Alcantara, Edward Park, Ana Paula Cunha, Luciana Londe, Klecia Massi, Jose A. A. Marengo
Summary: In this study, the susceptibility to landslides in Ouro Preto, Brazil was mapped and discussed using various data and a novel mathematical model. The results show that areas with low-density vegetation and rocky outcrops are most susceptible to strong landslides, and urban land use areas are also at risk. The landslides that occurred in February 2022 were triggered by intense soil saturation due to the uneven relief and edaphoclimatic characteristics of the region. This study provides support for local governments and decision-makers in their mitigation efforts.
JOURNAL OF GEOVISUALIZATION AND SPATIAL ANALYSIS
(2023)
Article
Computer Science, Information Systems
Wmerson Claro de Oliveira, Jairo Gonzalo Yumbla Romero, Lucas do Carmo Yamaguti, Juan Manuel Home Ortiz, Jose Roberto Sanches Mantovani
Summary: This paper proposes a new optimization methodology to solve the AC optimal power flow problem considering renewable energy sources. It minimizes power generation costs and gas emissions by controlling power dispatch generators, adjusting transformer positions, and using controllable reactive shunt compensation. The proposed algorithm combines a mathematical model and a metaheuristic algorithm to efficiently solve the problem, and its potential is demonstrated through numerical experiments.
IEEE LATIN AMERICA TRANSACTIONS
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Lucas Do Carmo Yamaguti, Juan M. Home-Ortiz, Mahdi Pourakbari-Kasmaei, Jose Roberto Sanches Mantovani
Summary: This paper proposes a model and solution technique for solving the decentralized optimal power flow problem considering prohibited operation zones. A matheuristic algorithm is used to handle the integer variables, while a non-linear optimization solver is used for the continuous variables. The effectiveness of the model is validated through experiments.
2022 IEEE INTERNATIONAL CONFERENCE ON ENVIRONMENT AND ELECTRICAL ENGINEERING AND 2022 IEEE INDUSTRIAL AND COMMERCIAL POWER SYSTEMS EUROPE (EEEIC / I&CPS EUROPE)
(2022)
Article
Computer Science, Information Systems
Ozy D. Melgar-Dominguez, Richard W. Salas, Jose R. Sanches Mantovani
Summary: This study proposes a novel two-stage strategy to address short-term planning issues in large-scale EDSs. By first removing unwanted buses and circuits using system reduction techniques, and then formulating an optimization model to minimize energy costs and carbon taxes while maximizing energy purchased from DG developers. Simulation results suggest that this planning strategy can effectively improve EDS operation.
Article
Computer Science, Information Systems
Juan M. Home-Ortiz, Wmerson Claro De Oliveira, Jose Roberto Sanches Mantovani
Summary: This paper presents a novel Variable Neighborhood Descent (VND) matheuristic approach to solve the OPF problem for large-scale systems, and the results show the superiority of this method compared to the commercial optimization solver Knitro in solving the MINLP-OPF model.