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A novel MODWT–local pattern transformation feature fusion approach for high-impedance fault detection in medium voltage power distribution networks

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Neural Computing and Applications 2025年 1-15页

作者： Varghese, P. Rini Subathra, M.S.P. Peter, Geno Stonier, Albert Alexander Kuppusamy, Ramya Teekaraman, Yuvaraja Department of Electrical and Electronics Engineering School of Engineering and Technology Karunya Institute of Technology and Sciences Tamil Nadu Coimbatore641114 India Department of Robotics Engineering School of Engineering and Technology Karunya Institute of Technology and Sciences Tamil Nadu Coimbatore641114 India CRISD School of Engineering and Technology University of Technology Sarawak Sarawak Malaysia School of Electrical Engineering Vellore Institute of Technology Vellore India Department of Electrical and Electronics Engineering Sri Sairam College of Engineering Bengaluru562106 India Kuwait Jahra Kuwait

Due to the arcing nature, the high-impedance fault (HIF), which typically occurs in medium voltage (MV) distribution networks, poses a risk to equipment, personnel, and livestock. Early fault detection can save lives and prevent equipment destruction. Since the fault current in a power system is contained within the normal current range, identifying the occurrence of HIF is difficult. Using maximal overlap discrete wavelet transform (MODWT) and a combination of MODWT–local pattern transformations (local binary pattern, local gradient pattern, local neighbor gradient pattern, and local neighbor descriptive pattern), the paper analyses the current signals from radial and mesh distribution networks and features extracted during HIF and non-HIF (line-to-ground (LG), double line (LL), double line-to-ground (LLG), and triple line-to-ground (LLLG) fault conditions). For the first time in power distribution networks for fault analysis, the suggested algorithm performs the HIF detection in the MV distribution system. To determine the best feature sets from the extracted features, the Kruskal–Wallis test was performed. Bidirectional long short-term memory (Bi-LSTM) was used for the chosen feature sets to classify the data as HIF or non-HIF. MODWT–LGP fusion achieves the highest accuracy for both networks among the four algorithms. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2024.

关键词： Discrete wavelet transforms

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Optimization for position and rating of distributed generating units using bacteria foraging algorithm to reduce power losses

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International Journal of Cognitive Computing in engineering 2023年第1期4卷 287-300页

作者： Gogula, Sandeep Vakula, V.S. Research Scholar Department of Electrical and Electronics Engineering JNTU Kakinada Andhra Pradesh India Department of Electrical and Electronics Engineering JNTUK University College of Engineering Andhra Pradesh Vizianagaram535003 India

Distributed generation (DG) units, which include solar panels, wind turbines, and fuel cells, are gaining in popularity as a result of the fact that they are dependable and produce no harmful emissions when they generate electricity. However, the integration of these new power sources into the current power grid may result in several technical difficulties, including voltage fluctuations, power imbalances, and increased power losses. The use of optimization methods may assist to solve these difficulties by determining the best position and size of DG units. This will help to reduce the amount of power that is lost and will enhance the power system's overall performance. Therefore, the Bacteria Foraging Optimization (BFO) method was used for DG in this study. This approach helps to decrease phase jump during symmetrical and unsymmetrical faults, as well as power losses, controls voltage magnitude and angle, and regulates voltage magnitude. In addition, nonlinear restrictions that are regarded to be forward factors include voltage limitation, DG capacity limitation, and phase jump limitation. On the IEEE 69 bus radial distribution scheme, both single and double DGs are taken into consideration for the allocation process. Because of its worldwide convergence and decreased calculation liability, the BFO algorithm is used in the optimization process for both position and rating. The suggested procedure is tested on the IEEE 69 bus radial distribution system in a MATLAB environment;the results demonstrate the efficiency of the suggested approach. In this case, the proposed system was successful in achieving the triple line-to-ground fault-based phase jump of 26.3° without DG and 0.52° with DG;the line-to-line (AB) fault-based phase jump of 0.01° without DG and 0.001° with DG;the single line (A) to ground fault-based phase jump of 0.0027° without DG and 0.001° with DG;and the line to ground fault-based phase jump of 0.001° with DG. © 2023

关键词： Distributed power generation

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A New Framework for Employing Responsive End-Users Using FAHP and PSO Algorithm

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Computers, Materials & Continua 2023年第1期74卷 951-964页

作者： Reza Etemad Mohammad Sadegh Ghazizadeh Mehrdad Ahmadi Kamarposhti Ilhami Colak Kei Eguchi Faculty of Electrical Engineering Shahid Beheshti UniversityA.C.TehranIran Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Department of Information Electronics Fukuoka Institute of TechnologyFukuokaJapan

The capacitor bank and synchronous condenser have been the only available sources of reactive ***,most of the appliances use a power electronic interface for their *** a power electronic interface addsmany features to these *** of the promising features is their capability to interact with Volt-VAR *** this paper was investigated the reactive power interaction of the end-user *** this purpose,the distribution network buses are ranked based on their effectiveness,followed by studying their interaction in the Volt-VAR *** be able to consider the uncertainties,Probability Density Function(PDF)curve was discretized to represent different scenarios,and the reduction method was utilized to reduce the situations.

关键词： End-user FAHP load uncertainty reactive power smart grid voltage profile

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Enhanced Eleven Level (EEL) MLI with Lower Number of Switches and Voltage Stress Applied to Agriculture Motor 3

Enhanced Eleven Level (EEL) MLI with Lower Number of Switche...

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3rd IEEE International Conference on Intelligent Systems, Smart and Green Technologies, ICISSGT 2024

作者： Sivamani, D. Shyam, D. Premkumar, K. Amoorthy, M. Kaliy Veeramanikandan, P. Priya, M. Lakshmi Rajalakshmi Engineering College Department of Electrical and Electronics Engineering Chennai India Dr. Mahalingam College of Engineering and Technology Department of Electrical and Electronics Engineering Pollachi India Dhanalakshmi Srinivasan College of Engineering and Technology Department of Electrical and Electronics Engineering India

ISBN: (纸本)9798350304329

A single-phase, eleven-level asymmetrical inverter including three uneven DC sources, five bidirectional, and two unidirectional switches is recommended. Since it uses fewer switches to give more output voltage levels, the asymmetrical layout is recommended. Reducing THD without adding more switches or levels is the main objective of this endeavor. The best topology was found by conducting comparative analysis with earlier ones, and the load parameter design is described. Half height modulation and equal phase angle modulation are used as control strategies. A MATLAB/Simulink simulation of an EEL MLI asymmetrical inverter was performed. Here, several characteristics, In order to compare the THD obtained using the two methods, factors such as total standing voltage (TSV), cost function (CF), and power loss are investigated for both fundamental and developed EEL MLI. © 2024 IEEE.

关键词： Insulated gate bipolar transistors (IGBT)

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A 511-μW 89-dB-SNDR Asynchronous SAR-ISDM ADC With Noise Shaping Dynamic Amplifier and Time-Domain Noise-Slicing Technique

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IEEE Journal of Solid-State Circuits 2024年第7期59卷 2199-2208页

作者： Chang, Hao-Hsuan Chen, Ci-Ren Lee, Tai-Cheng Graduate Institute of Electronics Engineering National Taiwan University Taipei10617 Taiwan National Taiwan University Department of Electrical Engineering Graduate Institute of Electronics Engineering Taipei10617 Taiwan

This work proposes a hybrid two-stage analog-to-digital converter (ADC) consisting of a coarse 3.3-V successive-approximation register (SAR) ADC and a fine 1.8-V comparator-based (CB) incremental Δ Σ modulator (ISDM) ADC. The coarse ADC boosts the maximum input amplitude to improve signal-to-noise and distortion ratio (SNDR), and the fine ISDM ADC adopts an asynchronous operation and a time-domain noise-slicing (TDNS) technique to improve power efficiency and conversion speed. Using the unequal data weighting of ISDM and the noise-slope relationship of the CB amplifier, the TDNS technique reconstructs the noise and power weighting of each cycle to optimize the figure of merit (FoM). Furthermore, the noise of the CB amplifier is suppressed by the noise-shaping (NS) technique. The ADC operates at a 370-kHz frequency and achieves 94.5/89.3-dB dynamic range (DR)/SNDR in a 185-kHz bandwidth (BW). It achieves a Schreier FoM of 174.88 dB and consumes 511 μ W. © 1966-2012 IEEE.

关键词： Comparators (optical)

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Efficient Power Extraction in Off-Grid Photovoltaic Systems with Landsman Converter: An Adaptive Fuzzy Control Approach 7

Efficient Power Extraction in Off-Grid Photovoltaic Systems ...

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7th International Conference on Circuit Power and Computing Technologies, ICCPCT 2024

作者： Penthala, Thanuja Kavin, K.S. Faizal, A. A. Mohamed Sekar, R.M. Sreedevi, S.L. Sengottaian, S. Vaagdevi College of Engineering JNTU Department of Electrical and Electronics Engineering Telangana Hyderabad India Government College of Engineering Department of Electrical and Electronics Engineering Tamilnadu Tirunelveli India V v College of Engineering Department of Electrical and Electronics Engineering Tisaiyanvilai628 656 India SSM Institute of Engineering and Technology Department of Electrical and Electronics Engineering Dindigul624002 India PERI Institute of Technology Department of Electrical and Electronics Engineering Chennai India Global Institute of Engineering and Technology Department of Electrical and Electronics Engineering Ranipet Melvisharam632509 India

ISBN: (纸本)9798350372816

An innovative approach for enhancing power extraction efficiency in off-grid photovoltaic (PV) systems through the use of Landsman Converter is proposed. This method tackles the difficult task of optimizing power extraction efficiency in off-grid situations when energy management and storage are essential. An Adaptive Fuzzy Control (AFC) method is proposed to improve its performance even more. AFC uses the adaptability and flexibility of fuzzy logic-based control systems to dynamically modify the Landsman Converter's functioning in response to external factors, load demands, and system parameters. Through constant observation of relevant variables including temperature, load demand, and solar irradiation, the AFC algorithm cleverly modifies the converter's operational parameters in real-time to optimize power extraction efficiency and guarantee peak system performance. Overall, by presenting a novel control strategy that improves power extraction efficiency and encourages the sustainable deployment of solar energy technologies in remote and off-grid areas, this study advances the state-of-the-art in off-grid PV system optimization. To evaluate the efficacy and practicability of the proposed strategy, simulation research and experimental validation are carried out. The comparison chart shows the proposed converter's efficiency of 92.3% and an AFC settling time of 0.23s. © 2024 IEEE.

关键词： Fuzzy control

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Applications of artificial intelligence in power system operation, control and planning: a review

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Clean Energy 2023年第6期7卷 1199-1218页

作者： Utkarsh Pandey Anshumaan Pathak Adesh Kumar Surajit Mondal Department of Electrical and Electronics Engineering School of Advanced EngineeringUniversity of Petroleum and Energy StudiesDehradun248007India

As different artificial intelligence(AI)techniques continue to evolve,power systems are undergoing significant technological changes with the primary goal of reducing computational time,decreasing utility and consumer costs and ensuring the reliable operation of an electrical power *** techniques compute large amounts of data at a faster speed than numerical optimization methods with higher processing *** these features,AI techniques can further automate and increase the performance of power *** paper presents a comprehensive overview of diverse AI techniques that can be applied in power system operation,control and planning,aiming to facilitate their various *** explained how AI can be used to resolve system frequency changes,maintain the voltage profile to minimize transmission losses,reduce the fault rate and minimize reactive current in distributed sys-tems to increase the power factor and improve the voltage profile.

关键词： artificial neural network genetic algorithm fuzzy logic adaptive neuro-fuzzy interference system artificial bee colony optimization ant colony optimization particle swarm optimization

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IoT Based Poultry Farm Automation 2

IoT Based Poultry Farm Automation

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2nd International Conference on Intelligent Data Communication Technologies and Internet of Things, IDCIoT 2024

作者： Karthikeyan, P. Karthik, M. Gautham, M.N. Gokul, S.K. Jayaram, C.L. Ganesh, B. Electrical and Electronics Engineering Erode India Kongu Engineering College Department of Electrical and Electronics Engineering Tamilnadu Erode India

ISBN: (纸本)9798350327533

IoT plays a major role in the automation of various industries and has become very important for making humans life to comfort zone. In poultry farms, the IoT is used for turning on and off the lights based on the intensity of the light and the fans based on the temperature in that environment. The water supply is very important for the proper growth of the chicks or hens. So, for the continuous supply of water, the nipple line system has been introduced to the poultry farm. Since the pressure of the water is reduced before going into the nipple line to avoid unnecessary wastage of the water like overflowing of the water or leakage of the water in the nipple, this allows the hens to drink water with great comfort. But this has the disadvantage of improper flow of water or flow of water with low pressure, which could cause the air to lock or block the flow of water. Improper monitoring of the water reduces the growth of the hens. To avoid this situation, poultry farm owners use labour to continuously monitor the water, but it is not efficient. The proposed research work sense the presence of water in the nipple line, and it could send the message to the farmer's phone with the help of the GSM module. For this process, the threshold distance is fixed;if the distance is greater than the threshold distance, it could send a message to the mobile number to which it linked. By this method, the water is monitored properly, the growth of the hen is increased and the cost of labour is also reduced. It is one of the cheapest and best methods to monitor the water in the nipple line. © 2024 IEEE.

关键词： GSM-Global System for Mobile communication IoT-Internet of Things SIM-Subscriber Identity Module

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Optimizing Renewable Energy Harvesting with Intelligent Control Strategies for DC Microgrid Systems 12th

Optimizing Renewable Energy Harvesting with Intelligent Cont...

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12th International Conference on Frontiers of Intelligent Computing: Theory and Applications, FICTA 2024

作者： Lagudu, Jayavani Satyanarayana, S. Jithendra Gowd, K. Department of Electrical and Electronics Engineering JNTUA Ananthapuramu India Department of Electrical and Electronics Engineering Raghu Institute of Technology Visakhapatnam India

ISBN: (纸本)9789819601424

Optimizing renewable energy harvesting in DC microgrid systems is achieved through the application of intelligent control strategies. By integrating solar photovoltaic (PV) systems, wind energy conversion systems (WECS), and battery storage within a hybrid renewable energy system (HRES), the aim is to boost energy efficiency and sustainability. The use of DC-DC converters is essential for stabilizing and synchronizing the variable DC outputs from solar and wind sources before they are combined into a common DC link. Various control techniques, including Fuzzy Logic Control (FLC) and Perturb and Observe (P&O) for Maximum Power Point Tracking (MPPT), are examined to ensure optimal power extraction from renewable sources. Simulation models developed in MATLAB/Simulink assess the system’s performance under different irradiance and wind velocity conditions, showcasing the effectiveness of intelligent control strategies in maximizing renewable energy utilization. The findings emphasize the significance of intelligent control in improving the efficiency and reliability of DC microgrid systems powered by renewable energy sources. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Solar power generation

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Analysis of interferometric configuration for optical devices

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Journal of Optical Communications 2024年第4期45卷 737-740页

作者： Sharma, Himanshu Kumar, Arun Department of Computer Science & Engineering Jecrc University Jaipur India Department of Electrical & Electronics Engineering Jecrc University Jaipur India

With the exponential growth in information related applications and the continuous increase in voice over IP (VoIP) applications, the carriers are expanding their networks to provide improved services to their end users. In such cases, the synchronous optical network/synchronous digital hierarchy model is not suitable. In this work, we are going to investigate the electro optic switch with the help of a VB script to simulate the device for various parameters. Further, we will then scan the central electrode voltages and take account of the overlap integral taking place at the output port with the help of waveguide mode. The best switching for switches at different voltages so as to have negligible coupling loss for different input signals is investigated. We aim to evaluate the MZI switches with the Li-Tn channel profile wave guiding structure and confirm their performance as compared to the existing MZI switches. © 2022 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Chemical bonds

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