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Research Proposal
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Dear researches and colleagues, We are serving as Guest Editors for a Special Issue entitled " Design and Application of DC–DC Converters in Power Systems " for Energies Journal (IF 3.004). Please find more information at: https://www.mdpi.com/journal/energies/special_issues/Design_and_Application_of_DC_DC_Converters_in_Power_Systems.This Special I...
Research
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Dear Colleagues, As the world population increases and the pace of urbanization continues unabated, the construction of smart cities with large commercial and residential buildings is expected to accelerate. The concept of zero-emission and smart buildings promises to usher in a new age of urban energy efficiency. This Special Issue aims to introdu...
Article
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The interface between the active electronic and its osculatory target dominates the sensing response of high-sensitivity sensors. However, the interface properties are difficult to be adjusted and preserved owing to the limited strategies for surface engineering. In this work, inspired by nature frond leaf, a spatial multi-level nanofibrous membran...
Article
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The multi-port energy router (ER) is an effective topology for integrating train traction load, AC load, the energy storage system and photovoltaic(PV) energy. The start and stop process of urban rail transit trains and the access of distributed energy sources to rail transit ER lead to serious fluctuations of DC bus power, so it is necessary to ro...
Poster
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The Guest Editors are inviting submissions for a Special Issue of Energies on the subject area of “Energy processing and Smart Grid.” The interdisciplinary applications with the involvement of several combined forces have led to the transformation of a traditional power system into a smarter domain. Such an empowerment of a traditional power system...
Article
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Fault current magnitude in a microgrid depends upon its mode of operation, namely, grid-connected mode or islanded mode. Depending on the type of fault in a given mode, separate protection schemes are generally employed. With the change in microgrid operating mode, the protection scheme needs to be modified which is uneconomical and time inefficien...
Article
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Partly because of advances in power electronic converters, the share of renewable energy in power generation is steadily increasing. The main medium of interface for integrating renewable energy sources to the utility grid is the power electronic inverter. Virtual oscillator control (VOC) is a time-domain approach for controlling parallel inverters...
Article
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Current advancements in power electronic converters have paved a way to shift the attention from the traditional internal combustion engine to electric vehicles (EVs). In previous research works, the EVs are normally represented by an aggregate model or a first order transfer function, and they are mostly used for the frequency regulation in microg...
Article
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The results obtained from electricity demand studies mostly point to the fact that the current gap between supply and demand in developing countries is already very substantial and that, it will become more entrenched under a 'business as usual' scenario. It's hard to run a business or a home without power, and those lucky few who are connected to...
Article
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Fast and accurate monitoring of the phase, amplitude, and frequency of the grid voltage is essential for single-phase grid-connected converters. The presence of DC offset in the grid voltage is detrimental to not only grid synchronization but also the closed-loop stability of the grid-connected converters. In this paper, a new synchronization metho...
Poster
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The Guest Editors are inviting submissions to a Special Issue of the Energies journal on “Soft Computing Applications in Electric Power Networks”. Recently, soft computing applications, as a part of artificial intelligence, have attracted many researchers and engineers to overcome the difficult problems that result from an enormous number of differ...
Article
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This Special Issue aims to publish high-quality research papers on the inter-disciplinary field of microgrid optimisation under uncertainty, and targets new probabilistic methods (i.e., scalable computational solutions) for managing microgrid energy management systems (EMS), from long-term planning to real-time operation, with the introduction of a...
Article
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Low-inertia power systems can suffer from high rates of change of frequency during imbalances between the generation and the demand. Fast-reacting storage systems such as a Flywheel Energy Storage System (FESS) can help maintain the frequency by quickly reacting to frequency disturbances, with no concern over its lifetime. While a modern high-speed...
Article
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This paper presents the optimization of stand-alone and grid-connected hybrid power generation systems for green islands, with application to Koh Samui in southern Thailand. A techno-economic optimization analysis is applied using the Hybrid Optimization Model for Electric Renewable (HOMER) Pro simulation tool. Four scenarios are identified to sele...
Article
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In this paper, new optimal procedures are introduced to design the finest controllers and harmonic compensators (HCs) of three-level cascaded control for three-phase grid-supporting inverters based-AC microgrid. The three control levels, comprising primary, secondary and synchronization control levels, are developed in stationary αβ-frame and based...
Article
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The deployment of a microgrid with renewable energy sources (RESs) generally considers two aspects i.e., the need for the energy storage and the presence of many uncertainties due to the intermittent nature of several RESs and the load demand variability. The latter justifies the use of stochastic optimization for the scheduling purpose. Therefore,...
Article
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Approximate dynamic programming (ADP) is a promising approach for power system scheduling and dispatch under uncertainties. This paper presents an innovative ADP-based dispatch method for a microgrid with intermittent renewable generation, battery energy storage systems, and controllable distributed generators. The proposed ADP algorithm is based o...
Article
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Microgrids are facing several operational and control issues while integrating with the grid. To deal with it, STATCOM, as one of the emerging power converter circuits, is connected with such microgrids. STATCOM with microgrid introduces current harmonic, inherent resonance, and active power losses related to high switching frequency. Filter design...
Article
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The introduction of cryptocurrencies as a new form of money has attracted a tremendous amount of attention in recent years. This new financial paradigm relies on miners to validate transactions by running their cryptocurrency mining devices (CMDs). Nowadays, the significant profitability of the mining business has tempted a large number of private...
Article
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In an ac microgrid, reactive power sharing accuracy is affected due to unequal values of interconnecting cable impedances. To resolve this issue, secondary controllers are used to compensate the effect of cable impedances. Various types of secondary controllers are suggested in the literature which includes linear proportional plus integral (PI) co...
Article
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Modern utility grid is experiencing a transition from conservative centralized generation structure to a more distributed and decentralized structure. To achieve this transition, decentralized energy sources and loads must be seamlessly integrated and isolated from main grid structure. Realization of one such approach is termed as “Microgrid”. Micr...
Article
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The grid power supply in many developing countries is insufficient and irregular resulting in many commercial users relying on inefficient and air pollution intensive off-grid captive diesel generators (DGs) as a backup power supply. This study investigates the fuel consumption and emission level of such DGs and explores the possibility of reducing...
Article
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The paradigm shift of power markets towards the smart grid, involves mass energy transfer between entities and requires the support of effective policies under comprehensive framework. This paper presents a technical-economic framework for energy wheeling (FEW) that encompass a self-sufficient smart energy network of regional microgrids and virtual...
Article
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Microgrids consisting of renewable energy based distributed generators have become popular as a way of energizing off-grid systems. Due to their low-inertia, these distributed generators require a robust frequency control system to maintain it. This problem is amplified by the fact that there is no centralized grid that anchor the system voltage an...
Article
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In this paper, an intelligent method for fault detection and classification for a microgrid (MG) was proposed. The idea was based on the combination of three computational tools: signal processing using the maximal overlap discrete wavelet packet transform (MODWPT), parameter optimization by the augmented Lagrangian particle swarm optimization (ALP...
Article
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Increased penetration of photovoltaic (PV) in the power system leads to a reduction in system inertia. This reduction causes a high-frequency nadir and a high rate of change of frequency (ROCOF) during disturbances, which can result in load shedding or pole slipping and cascading outages. Therefore, a lot of research has been conducted to enhance t...
Article
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The problem of securely reconnecting active distribution networks (ADNs) – e.g. microgrids – to their upstream grids at the point of common coupling (PCC) has been extensively discussed by the existing literature. The latter is commonly referred to as resynchronization and has to be done with care in order to avoid large transient current flows res...
Article
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In microgrids, multiple modular distributed generation (DG) are required to power the system’s loads. Nonetheless, disproportionate reactive power (Q) sharing arises with unequal feeder line impedances of DGs connected to a common bus. Hence, this study proposes a novel method, based on virtual shunt and series capacitances, to regulate both accura...
Article
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This paper presents a new combination of adaptive controllers and recursive filters for the operation of the microgrid with different balanced, unbalanced, and nonlinear loads. The suggested control scheme has the cascaded structure of voltage and current loops for positive- and negative-sequence control. The suggested adaptive controllers are the...
Article
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Smart MicroGrids (SMGs) can be seen as a promising option when it comes to addressing the urgent need for sustainable transition in electric systems from the current fossil fuel-based centralised system to a low-carbon, renewable-based decentralised system. Unlike previous studies that were restricted to a limited number of actors and only took a m...
Article
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Seaports are progressively electrified to harness various energy resources to provide green logistic services to ships. They essentially act as multi‐energy microgrids to enhance the energy efficiency and environmental sustainability of the maritime industry. This trend necessitates the coordinated operation of multiple sectors in seaport microgrid...
Article
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A concern regarding the deterioration in power quality (PQ) has escalated with the high level of integration of renewable energy sources to the utility, primarily in the scenario of a weak distribution grid. This paper presents a modified complex variable filter (MCVF)‐based control to enhance the power quality performance of wind–solar photovoltai...
Article
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This paper aims to minimize the generation cost of a low voltage (LV) grid-connected microgrid system using a novel hybrid whale optimization algorithm (WOA)- Sine cosine algorithm (SCA) optimization technique. Three different methods of electricity market prices are formulated in turns and the generation cost is evaluated for each method to sort o...
Article
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This work presents the development and implementation of a simulation platform based on MATLAB/Simulink devoted to analysing the behaviour of Polymer Electrolyte Membrane (PEM) electrolyzer (PEMEL) models. A graphical user interface (GUI) designed in App Designer is included for controlling the platform and visualising simulation results. Through t...
Article
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This paper introduces a hybrid methodology of robust energy management for system modeling and configuration of Microgrid linked system. The proposed system is combined performance of both the Recurrent Neural Network (RNN) and Modified Dragonfly algorithm (MDA), hence it is known as RNN‐MDA. Microgrid connected system like photovoltaic, wind turbi...
Article
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Accurate load forecasting can efficiently reduce the day-ahead dispatch stress of power system or microgrid. The overview of load forecasting based on artificial intelligence models are comprehensively summarized in this paper. As the steps of load forecasting based on artificial intelligence model mainly include data processing, setting up forecas...
Article
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In the three‐level DC‐DC converter‐based bipolar DC microgrids, accurate power sharing among distributed generators and voltage balancing between the positive and negative poles are two main control objectives. This article presents a resilient bi‐level control strategy which simultaneously satisfies both aforementioned objectives. The proposed con...
Article
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Several isolated microgrids (MGs) may exist in remote areas because of the geographical and/or utility investment limitations. The isolated MG has its challenges depending on its configuration, energy sources, and nature of loads resulting in power quality issues. Clustering these MGs based on their relative locations to form several clusters and i...
Article
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Unpredictable occurrence of natural disasters in modern power systems has significantly increased the attentions to the outage management of multi‐microgrid (MMG) systems. In this regard, a multi‐objective two‐stage outage management scheme is presented in this paper to protect undamaged microgrids (MGs) against load curtailment and minimize the cu...
Article
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Emergency power supply is becoming an important capability for many home or industrial electronic and computer devices. Therefore, the performance of the designed uninterruptible power supplies (UPS) inverters has low distortion at the output voltage. Initially, such inverters were controlled by proportional integral (PI) control classic rules....
Article
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The inaccuracy of power sharing is a classic problem of droop control when an islanded AC microgrid suffers from high loads and line impedance differences. It degrades system performance and even destroys system stability. This paper originally presents a multi‐objective optimisation droop control method to solve such a problem. And three objective...
Article
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An input‐series quasi‐resonant (QR) flyback high‐voltage switching mode power supply (SMPS) based on an integrated transformer has been designed and analysed. It is capable of converting a high DC input voltage to lower DC voltage to power the control components of high‐power converters in a DC microgrid. An integrated transformer, combined with id...
Conference Paper
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In order to help to solution power-sharing process, keep to frequency and voltage constrained limits in microgrid system. The parameter values must therefore be chosen accurately. Optimization techniques are a hot topic of researchers; hence this paper presents an optimization technique for finding parameter values of system. This paper will apply...
Article
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The issues of variability and uncertainty of tidal speed result in severe challenges for standalone microgrid (as island grids for examples) operators. Indeed, to maintain the system power balance, existing classical generators which are associated with tidal power units must be able to frequently change their operating point, either up or down, to...
Article
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Energy poverty, defined as a lack of access to reliable electricity and reliance on traditional biomass resources for cooking, affects over a billion people daily. The World Health Organization estimates that household air pollution from inefficient stoves causes more premature deaths than malaria, tuberculosis, and HIV/AIDS. Increasing demand for...
Article
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This paper deals with the power smoothing of the wind power plants connected to a microgrid using a hybrid energy storage system (HESS). In a HESS, the power should be distributed between the battery and capacitor such that the capacitor supplies the peaks of power and its high‐frequency fluctuations, and the battery compensates for the rest. Besid...
Article
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The transition of residential communities to renewable energy sources is one of the first steps for the decarbonization of the energy sector, the reduction of CO2 emissions, and the mitigation of global climate change. This study provides information for the development of a microgrid, supplied by wind and solar energy, which meets the hourly energ...
Article
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With the aggravation and evolution of global warming, natural disasters such as hurricanes occur more frequently, posing a great challenge to large-scale power systems. Therefore, the pre-position and reconfiguration of the microgrid defense resources by means of Mobile Energy Storage Vehicles (MEVs) and tie lines in damaged scenarios have attracte...
Article
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The utilization of solar power generation/storage microgrid systems has become an important approach, transforming the energy structure of China in order to achieve the emission peak and carbon neutrality. Meanwhile, the commercialization of household photovoltaic (PV) systems is also at the transitional period between its beginning to its maturity...
Preprint
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In this paper, we study the expanding attack surface of Adversarial Machine Learning (AML) and the potential attacks against Vehicle-to-Microgrid (V2M) services. We present an anticipatory study of a multi-stage gray-box attack that can achieve a comparable result to a white-box attack. Adversaries aim to deceive the targeted Machine Learning (ML)...
Conference Paper
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The Concept of DGs is developed to utilize the small scale renewable energy resources to meet the local power demand and microgrids are getting importance as they allow the penetration of DGs. Microgrid should be operated in an islanded mode to increase supply reliability. To operate a microgrid in islanded mode, there are two major issues to be ad...
Preprint
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Worldwide, it is imperative for citizens to have access to electricity. This applies to Con-golese-rural and urban dwellers, and if possible, it should be guaranteed by government's laws and policies. However, the rural and urban areas of Democratic Republic of Congo (DRC) suffer majorly from lack of access to electricity. The major reasons are the...
Article
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This paper introduces an enhancement of the protection and operation of the Future Renewable Electric Energy Delivery and Management (FREEDM) system. It uses the solid-state transformers to connect the residential A.C. and D.C. microgrids to the distribution system and fault isolation devices for faulty line isolation. In this paper, a current diff...
Article
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Restructuring in power systems has resulted in the development of microgrids (MGs) as entities that could be operated in grid-connected or islanded modes while managing the operation of their systems. On the other hand, privatization and integration of independently operated distributed resources in energy systems have caused the introduction of mu...
Article
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This paper proposes a risk‐averse strategy for resilience improvement multiyear planning for distribution networks against hurricanes, considering the uncertainty of load demand and wind power generation. For resilience enhancement, DG placement and line hardening are regarded as planning measures, and DG rescheduling, topology reconfiguration, mic...