Article
Construction & Building Technology
Ali Jafarian Abianeh, Farzad Ferdowsi
Summary: This paper aims to enhance the control of Hybrid Energy Storage Systems (HESS) in an islanded DC microgrid with pulsing power loads, utilizing Sliding Mode Control (SMC) and on-the-fly charging approach to improve system performance and stability.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Energy & Fuels
Zuliang Huang, Yan Li, Xin Cheng, Mingjun Ke
Summary: This paper proposes a distributed secondary control strategy for parallel battery energy units (BEUs) in a DC microgrid. The strategy consists of two layers: a primary control layer with droop control and a secondary control layer that generates a voltage-shifting term using an information state factor. A sigmoid function with a balancing adjustment factor is adopted to improve SOC balancing accuracy and speed. The proposed method reduces communication burden, avoids unnecessary cyclic charge or discharge, and achieves accurate current sharing and consistent output voltage.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Noushin Poursafar, M. J. Hossain, Seyedfoad Taghizadeh
Summary: This paper presents an enhanced distributed DC-bus signaling control strategy for converters of photovoltaic systems (PVs) to make the islanded DCMG less dependent on the backup energy storage system (BESS). The proposed control method maintains DC-bus voltage via intelligently managing output powers of the PVs and switches between MPPT and voltage regulating control operations. It effectively protects the DCMG from shutdowns during the absence of the BESS and reduces oscillations on the DC-bus voltage during the presence of the BESS.
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
(2022)
Article
Energy & Fuels
Alok Agrawal, Rajesh Gupta
Summary: This paper presents a new Energy Storage Device (ESD) charge controller for integrating multiple hybrid ESD stacks in DC microgrids. The controller effectively handles source-load and voltage fluctuations, while providing system redundancy. Unlike conventional controllers, this algorithm only requires one voltage sensor, simplifying control circuitry and hardware implementation. Simulation and experimental results demonstrate the viability and stability of the proposed controller.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
Sima Ahmadi, Iman Sadeghkhani, Ghazanfar Shahgholian, Bahador Fani, Josep M. Guerrero
Summary: This article proposes a protection scheme effective for both bolted and high-resistance faults in LVdc feeders, relying on two intelligent electronic devices and calculating the normalized superimposed component of the line current.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Computer Science, Information Systems
Mohammadreza Nabatirad, Reza Razzaghi, Behrooz Bahrani
Summary: This article proposes a novel control system for energy management in islanded dc microgrids, providing regulated voltage and highly accurate load sharing in a decentralized manner. The control system uses the state of charge of battery energy storage systems to define the operation mode of the microgrid.
IEEE SYSTEMS JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Muhammad Fahad Zia, Mashood Nasir, Elhoussin Elbouchikhi, Mohamed Benbouzid, Juan C. Vasquez, Josep M. Guerrero
Summary: DC microgrids are becoming increasingly important in modern power systems due to the growing penetration of DC distributed energy resources and loads. This paper presents a case study of an islanded DC microgrid with tidal energy potential, and proposes an optimal energy management system for efficient operation.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Automation & Control Systems
Neelesh Yadav, Narsa Reddy Tummuru
Summary: In this article, a cost-effective short-circuit fault detection method is proposed for a distribution network in the ac grid-connected low-voltage dc (LVdc) microgrid. The method considers a typical dc system with multiple dc/dc, ac/dc power converters, and loads interfaced to the dc link. The discharge behavior of a filter capacitor (FC) in power converters is utilized for fault identification using a time-frequency-domain-based wavelet transform (WT) for quantitative analysis.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Anu Aswakumar Geetha, Annie Bernonse Vasantha, Hari Kumar Raveendran Pillai, Ushakumari Somarajan
Summary: This paper analyzes the impact of supercapacitor (SC) voltage deviation on the stability of DC microgrid (DCMG) and proposes a controller design procedure to mitigate the consequences. Simulation in MATLAB and real-time validation in OP4510 real-time simulator are conducted, and the results show that the proposed scheme eliminates ringing of DC bus voltage and maintains DCMG stability, regardless of SC operating voltage variations.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2022)
Article
Automation & Control Systems
Bhaskara Rao Ravada, Narsa Reddy Tummuru, Bala Naga Lingaiah Ande
Summary: This article proposes a new dc-dc multisource converter configuration-based grid-interactive microgrid with photovoltaic, wind, and hybrid energy storage. The system includes a control structure and power sharing scheme for operation under various modes, with key highlights of low component count, voltage boosting, voltage regulation, and a simple control structure. Integration of supercapacitor in the hybrid energy storage effectively handles power fluctuations and increases battery storage lifetime.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Green & Sustainable Science & Technology
Koksal Erenturk, Azeddine Draou, Abdulrahman AlKassem
Summary: In this paper, different types of synergetic controllers are designed and applied to an islanded DC microgrid. A generalized mathematical method is derived for all power electronics-based subsystems. A small-scale experimental system is designed and the performance of different controllers is verified through simulation and experiment tests.
Article
Green & Sustainable Science & Technology
Prashant Singh, Jagdeep Singh Lather
Summary: This paper proposes a novel power management strategy for power-sharing between battery and supercapacitor energy storage systems to resolve demand-generation differences and DC bus voltage regulation. The strategy involves compensating for PI controller managed hybrid energy storage systems to improve DC bus regulation and reduce battery stress levels. Redirecting unwaged battery currents to supercapacitors for fast compensation enhances battery lifespan. The stability analysis of DC microgrid is also evaluated, with the effectiveness of the proposed strategy confirmed through simulations and hardware-in-loop experimentation on an FPGA-based real-time simulator.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Watcharakorn Pinthurat, Branislav Hredzak
Summary: This paper proposes a fully decentralized, communication-less control strategy for heterogeneous energy storage devices distributed in a DC datacentre, utilizing decentralized virtual resistance and virtual capacitive droop control to allocate different frequency components of loads to batteries and ultra capacitors. The control system also balances the batteries' state of charges to a common value.
Article
Engineering, Electrical & Electronic
Waqas Javed, Dong Chen, Ibrahim Kucukdemiral
Summary: This paper investigates fault localization in low voltage direct current (LVDC) microgrids. A state-space modeling approach is employed to analyze the identifiability of a DC fault in a linearized LVDC network. The proposed method combines an enhanced analytical approach and model-based artificial neural network to accurately localize both underdamped and over-damped DC faults without communications. Time-domain simulations in Matlab/Simulink validate the robustness of the method against various factors.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Carlos D. Zuluaga-Rios, Cristian Guarnizo-Lemus
Summary: This paper proposes and validates three different approaches for estimating nodal voltages in DC-microgrids. The experimental results indicate that the Kalman filter approach outperforms the other methods in terms of performance.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Automation & Control Systems
Shatakshi Jha, Bhim Singh, Sukumar Mishra
Summary: This article presents a multiobjective control scheme for a bidirectional interlinking converter of renewable energy based ac-dc hybrid microgrid. The control scheme focuses on power management and prioritizes feeding ac loads and dc loads from ac source and photovoltaic battery energy storage respectively. It utilizes solar power to its maximum capacity and ensures power quality control. The scheme demonstrates superior performance compared to conventional and contemporary techniques under different scenarios.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Vedantham Lakshmi Srinivas, Bhim Singh, Sukumar Mishra
Summary: This article presents an enhanced power quality solar photovoltaic (PV) inverter that eliminates common-mode leakage current. The inverter uses a three-phase transformerless solar energy conversion system to achieve peak active-power production and improve power quality. Unlike conventional inverters, this strategy is robust and effectively eliminates leakage currents caused by PV array parasitic capacitance.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Vaibhav Nougain, Sukumar Mishra, Sushree Subhasmita Jena
Summary: Differential current protection is a reliable method for line protection in DC systems. However, its dependence on communication for terminal current information makes it vulnerable to external cyber intrusions. This paper proposes a resilient protection approach for medium voltage DC microgrids, which can differentiate between real faults and external cyber intrusions, and employs current limiting reactors to limit the peak of fault current.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Engineering, Electrical & Electronic
Priyatosh Mahish, Sukumar Mishra
Summary: This paper proposes a synchrophasor data based Q-V droop (SQVD) control technique to address the reactive power allocation issues in wind farms integrated to the grid. It uses synchronized droop gain and distributed coordination among DFIGs to optimize the reactive power allocation. The SQVD method is found to be more effective than constant Q-V droop and variable Q-V droop control methods in different dynamic situations.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2023)
Review
Energy & Fuels
Sriranga Suprabhath Koduru, Venkata Siva Prasad Machina, Sreedhar Madichetty
Summary: The importance of cyber security has increased in the past decade, especially in relation to the vulnerability of critical infrastructure modeled with cyber-physical systems (CPS). Traditional security methods are no longer sufficient to detect undetectable and innovative attacks. This article discusses the potential of artificial intelligence (AI) in cyber security and explores intelligent methods such as pattern recognition models, deep neural networks, generative adversarial networks, and reinforcement learning. A case study on microgrid systems demonstrates the effectiveness of a deep neural network-based controller in detecting and mitigating cyber attacks.
Article
Engineering, Electrical & Electronic
Dhiman Das, Bhim Singh, Sukumar Mishra
Summary: The decrease in solar panel cost over the past decade has led to a greater usage of solar photovoltaic (SPV) in various applications. In this paper, a PV generation with battery energy storage (BES) is used to reduce the impact of energy consumption from the utility grid on air conditioning units. By utilizing VFD technology and an energy management methodology with PV array and BES, the power consumption of the air conditioning unit is reduced and excess PV generation is fed back to the grid with improved power quality.
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
(2023)
Article
Engineering, Multidisciplinary
Yashi Singh, Bhim Singh, Sukumar Mishra
Summary: This work presents a hybrid control method for inverters in a single-phase AC grid-interactive photovoltaic microgrid. The method uses three cascaded loops for control and enables seamless mode transitions. The controller regulates grid current and output voltage in different modes. The method is suitable for parallel-operated single-stage systems with independent MPPT and battery energy storage.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Engineering, Multidisciplinary
Yashi Singh, Bhim Singh, Sukumar Mishra
Summary: This paper presents a modified power control (MPC) method for seamless mode transition in a microgrid and accurate regulation of reference grid current, reducing the complex communication setup and cost. The method achieves power distribution between parallel SPI units and maintains power factor and total harmonics distortion based on the IEEE 519 standard.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Computer Science, Information Systems
Sreenivasulu Madichetty, M. Sridevi, Sreekanth Madisetty
Summary: Detecting informative tweets during a disaster is crucial for government and non-government organizations. Previous research mainly focused on either text or image, with few considering the multi-modal nature of informative tweets. Existing methods have not performed well in identifying multi-modal informative tweets, risking the loss of valuable information during critical times. To address this, we propose a novel approach that combines the text and image features extracted by pre-trained RoBERTa and VGG-16 models using a multiplicative fusion technique. Experimental results on diverse disaster datasets demonstrate that our method outperforms existing baseline methods on various parameters.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Arnab Bhattacharjee, Arnab Kumar Mondal, Ashu Verma, Sukumar Mishra, Tapan K. Saha
Summary: This paper proposes a self-supervised latent space clustering algorithm, which is called Deep Latent Space Clustering, for detecting stealthy false data injection attacks in smart grids. The proposed algorithm is effective in bypassing conventional bad data detection algorithms. It utilizes a stacked autoencoder network and a trainable clustering head to achieve clean clustering of the data. The algorithm is tested on standard test systems and found to perform at par with state-of-the-art algorithms.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Multidisciplinary
Shatakshi Jha, Bhim Singh, Sukumar Mishra
Summary: This article discusses the challenges faced by a solar PV-diesel generator-battery storage (PV-DG-BS) based microgrid operating in standalone mode. It proposes a multi-objective and coordinated control system for converters to manage power, optimize the operation of the DG, and handle nonlinear loads. The control system also ensures that the total harmonic distortion of the DG current remains within the limits defined by the IEEE 519 standard. Additionally, it prevents the flow of negative sequence currents during unbalanced faults and regulates the state of charge of the battery storage to avoid overcharging or overdischarging.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Manas Ranjan Mishra, Priyatosh Mahish, Sukumar Mishra
Summary: The gradual increase in the installation of solar photovoltaic inverters (SPVIs) at the low voltage network leads to over-voltage issues at the SPVI-connected point-of-common-couplings (PCCs). This paper proposes an irradiance-driven adaptive PQV droop control technique for the SPVIs to improve voltage regulation in an active distribution system (ADS). A Two-Bit-Priority (TBP) algorithm is also introduced for distributed coordination among the SPVIs. The results show that the proposed method outperforms the IEEE-1547-2020 recommended droop characteristic.
IEEE TRANSACTIONS ON POWER DELIVERY
(2023)
Article
Mathematics, Interdisciplinary Applications
Andrew A. Manderson, Robert J. B. Goudie
Summary: A challenge for Bayesian inference practitioners is how to incorporate multiple relevant, heterogeneous data sets into a model. We propose chained Markov melding, an extension of Markov melding, to combine the submodels into a joint model. We address the challenges of capturing prior dependence and reconciling differences in priors between adjacent submodels. Additionally, we describe a sampler that utilizes the chain structure to incorporate information from submodels in multiple stages.
Article
Engineering, Electrical & Electronic
Utkarsh Kumar, Sukumar Mishra, Kalyan Dash
Summary: This article proposes a low-cost and less data-intensive methodology for detecting, localizing, and classifying faults in solar photovoltaic (SPV) systems. It utilizes a sensorless electronic circuit, an Internet of things (IoT)-based application, and a deep autoencoder-based semi-supervised learning module, followed by a hybrid support vector machine and logistic regression for fault classification. The methodology is validated in a laboratory-scale real-time setup of a grid-connected SPV system.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Vaibhav Nougain, Sukumar Mishra
Summary: This article proposes a novel time-domain-based algorithm for accurately determining fault location in high-voltage direct current (HVdc) systems with hybrid dc transmission corridors. The algorithm offers flexibility to locate faults ranging from homogeneous transmission lines to n-segment hybrid transmission corridors. Power systems computer-aided design/electromagnetic transients including dc (PSCAD/EMTDC)-based simulations are used to validate the algorithm's performance against parameter variations.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
