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2022 IEEE 9th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON)最新文献

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Dynamic Performance Analysis of Grid-Connected Wind-DFIG System using STATCOM-SESS 基于STATCOM-SESS的并网风电双馈系统动态性能分析
Somendra Kumar Singh, Satyendra Singh, R. Sharma
This paper presents the performance investigation of a grid-connected WIND-DFIG system with a static synchronous compensator (STATCOM) by including the supercapacitor energy storage system (SESS) under fault (LLL-G) conditions. During a fault condition, the grid connected WIND-DFIG system requires a quick power exchange between active and reactive powers for stability in the system. A general STATCOM does not have active power exchange between grid-connected WING-DFIG systems; it has only reactive power exchange capability. So, the supercapacitor provides active power exchange capability to STATCOM under any dynamic change in the grid-connected WIND-DFIG system. The entire proposed grid-connected WIND-DFIG system was built and tested for performance under fault conditions with and without STATCOM-SESS in MATLAB/SIMULINK Software.
本文研究了包含超级电容储能系统(SESS)的具有静态同步补偿器(STATCOM)的WIND-DFIG并网系统在故障(ll - g)条件下的性能。在故障状态下,并网的WIND-DFIG系统需要在有功和无功之间进行快速的功率交换,以保证系统的稳定。一般的STATCOM在并网的WING-DFIG系统之间没有有功功率交换;它只有无功交换能力。因此,在并网WIND-DFIG系统发生任何动态变化的情况下,超级电容器向STATCOM提供有功功率交换能力。在MATLAB/SIMULINK软件中构建了整个并网WIND-DFIG系统,并在有STATCOM-SESS和没有STATCOM-SESS的情况下测试了故障条件下的性能。
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引用次数: 0
Protection of low voltage AC microgrid using discrete wavelet transform 基于离散小波变换的低压交流微电网保护
Sameep Sahu, Salauddin Ansari, O. Gupta
To protect microgrids the variation in fault level poses a significant challenge. In this paper, a wavelet energy-based protection scheme is proposed to detect the fault. The sum of the squared differential current in all three phases is passed to DWT (discrete wavelet transform) filter bank. The wavelet coefficients are obtained using the signal processing technique (DWT) and the energy of the extracted wavelet coefficients is calculated. When wavelet energy exceeds the threshold limit, it is considered an internal fault else it is an external fault or external disturbance. The microgrid's performance was estimated by taking several parameters like different fault types, fault locations, fault resistances, and external fault and non-fault conditions (capacitor and load switching). The microgrid was modeled in MATLAB/Simulink environment. A comparison has been done between the differential protection scheme and the proposed wavelet energy-based scheme. The proposed wavelet energy protection scheme detected faults in 6 ms and provided reliable results in detecting faults for low-voltage AC microgrids. The simulation results indicate that a wavelet energy-based scheme can be implemented to enhance the protection of the microgrid.
故障电平的变化对微电网的保护提出了重大挑战。本文提出了一种基于小波能量的故障检测保护方案。所有三相的差分电流平方和传递给DWT(离散小波变换)滤波器组。利用信号处理技术(DWT)获得小波系数,并计算提取的小波系数的能量。当小波能量超过阈值时,认为是内部故障,否则认为是外部故障或外部干扰。采用不同故障类型、故障位置、故障电阻、外部故障和非故障条件(电容和负载切换)等参数对微电网的性能进行了估计。在MATLAB/Simulink环境下对微电网进行建模。并将该差动保护方案与小波能量保护方案进行了比较。所提出的小波能量保护方案在6 ms内检测出故障,为低压交流微电网故障检测提供了可靠的结果。仿真结果表明,基于小波能量的方案可以增强对微电网的保护。
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引用次数: 0
Vocal Biomarker Based COVID-19 Detection Using DNN and Transfer Learning ResNet50 基于DNN和迁移学习ResNet50的基于声音生物标志物的COVID-19检测
Aditya Raj, Ramesh K. Bhukya
The aim of this study is to automate the detection of COVID-19 patients by analysing the acoustic information embedded in cough samples. COVID-19 is a respiratory disease having cough acoustics as a common symptom and indicator. The primary focus is classification of generated deep features from analytical and mathematical representation of cough acoustics using signal processing techniques Mel-frequency cepstral coefficients (MFCCs) and Mel-spectrogram. MFCCs provides feature vector representation of cough signal and is used as an input for deep neural network (DNN) to generate deep features. Transfer Learning ResNet-50 based Convolutional Neural Network (CNN) model is used to generate deep features from image representation of cough in the form of Mel Spectrogram. Dataset labelling is done with two categories of COVID-19 and Non-COVID-19 classes. Among them, we have used 70% of the dataset for training and 30% for testing purposes. The deep features generated from MFCCs and Mel Spectrograms are concatenated along with a feature value output from a DNN having Metadata as input. The final concatenated feature vector is sent for Softmax based classification. By completing the whole process, we obtained the training AUC (Area Under Curve) (ROC) 95.39%, validation AUC as 88.19% and testing AUC as 88.76%. The analysis of final AUC with epoch curve shows constant increase in training AUC and convergence of validation and testing AUC at certain value representing model training as perfectly fit and no overfitting-underfitting problem.
本研究的目的是通过分析咳嗽样本中嵌入的声学信息来自动检测COVID-19患者。新冠肺炎是一种以咳嗽声为常见症状和指标的呼吸系统疾病。主要重点是使用mel -频率倒谱系数(MFCCs)和mel -谱图等信号处理技术对咳嗽声学的分析和数学表示生成的深层特征进行分类。mfccc提供咳嗽信号的特征向量表示,并用作深度神经网络(DNN)的输入来生成深度特征。使用基于迁移学习ResNet-50的卷积神经网络(CNN)模型,以Mel谱图的形式从咳嗽图像表示中生成深度特征。数据集标记分为COVID-19和非COVID-19两类。其中,我们使用了70%的数据集用于训练,30%用于测试。从MFCCs和Mel谱图生成的深度特征与从具有元数据作为输入的DNN输出的特征值一起连接。最后的拼接特征向量被发送给基于Softmax的分类。完成整个过程,得到训练曲线下面积(ROC) 95.39%,验证曲线下面积(AUC) 88.19%,检验曲线下面积(AUC) 88.76%。对epoch曲线的最终AUC分析表明,训练AUC不断增加,验证和测试AUC在一定值处收敛,表示模型训练完全拟合,不存在过拟合-欠拟合问题。
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引用次数: 0
A Trustworthy and Cooperative MAC Protocol for Cognitive Vehicular Networks 基于认知车辆网络的可信协作MAC协议
Jahnvi Tiwari, D. Dubey, A. Prakash, R. Tripathi
A trustworthy medium access control (MAC) protocol is needed to enable recent advancements in transport systems to broadcast high-priority safety messages. Cognitive radio-based vehicle ad hoc networks (CR-VANETs) are being implemented by researchers to satisfy the rapidly rising spectrum demand with ease. However, fraudulent users may insert false emergency alarms into CR-VANETs, blocking nodes from getting the most recent traffic conditions. To ensure the dependability and credibility of the safety message conveyed over the networks, evaluating the trustworthiness of nodes has become a vital responsibility in CR-VANETs. In this study, to determine the level of trust for each node, several performance metrics of the proposed MAC protocol are evaluated cooperatively. Depending on the trust value, which is determined by the roadside unit (RSU), a malicious user (MU) is eliminated from the contention process. The simulation demonstrates that by identifying and removing malicious nodes, the throughput of the proposed protocol gradually increases.
为了使传输系统能够广播高优先级的安全消息,需要一个可信的介质访问控制(MAC)协议。基于认知无线电的车辆自组织网络(CR-VANETs)正在被研究人员实施,以轻松满足快速增长的频谱需求。然而,欺诈用户可能会在cr - vanet中插入虚假的紧急警报,从而阻止节点获取最新的交通状况。为了保证在网络上传递的安全信息的可靠性和可信性,评估节点的可信性已成为cr - vanet中的一项重要任务。在本研究中,为了确定每个节点的信任级别,对所提出的MAC协议的几个性能指标进行了协同评估。根据由路旁单元(RSU)确定的信任值,恶意用户(MU)将从争用过程中消除。仿真结果表明,通过识别和去除恶意节点,该协议的吞吐量逐步提高。
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引用次数: 0
Application of Signal Processing and Machine learning on Power Quality Disturbance with RE Penetration: A Review 信号处理和机器学习在RE穿透电能质量扰动中的应用综述
Harshit Rathore, Hemant Kumar Meena, P. Jain
As more source of renewable energy are incorporated into the traditional system to fulfil global energy demand and the decarbonization goal, there is growing worry over power excellence. Due to the variable output of renewable energy sources (RES) as well as the interfacing converters, the power quality (PQ) disturbance is observed to be more prevalent as the addition of renewable energy into the network increases. In orderto deliver clean power to end users, it is necessary to notice and reduce power quality disturbance (PQD). In this article, various methods for identifying and categorizing PQ instabilities caused by the penetration of RES in the system are evaluated. This review paper's primary goal is to describe various approachesfor the feature removal and categorization of PQ instabilities, as well as additional strategies for PQ disturbance reduction, such as forecasting for renewable energy sources.
随着越来越多的可再生能源被纳入传统系统,以满足全球能源需求和脱碳目标,人们对电力卓越性的担忧日益增加。由于可再生能源(RES)和接口变流器的输出变化,随着可再生能源加入电网的增加,电能质量(PQ)扰动更为普遍。为了向终端用户提供清洁电力,必须注意并减少电能质量扰动。本文对系统中RES渗透引起的PQ不稳定性的各种识别和分类方法进行了评估。这篇综述的主要目的是描述PQ不稳定性特征去除和分类的各种方法,以及减少PQ干扰的其他策略,如可再生能源的预测。
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引用次数: 2
Abandoned Luggage Detection: An Ontology-based approach for unusual activity recognition 废弃行李检测:一种基于本体的异常活动识别方法
Ashish Singh Patel, Vivek Tiwari, Muneendra Ojha, O. P. Vyas
Analysis of video data generated by surveillance systems requires an efficient way to represent, store, and retrieve for performing reasoning to identify unusual events. The recognition of unusual events is often difficult with existing machine-learning/Deep Learning approaches as they suffer due to lack of training examples. Abandoned luggage identification is one of the critical problem which poses security threat in public places. It may occur in several forms with various scenarios. However training for each possible case is extremely challenging due to limited amount of training examples. In this work, an ontology-based reasoning and analysis for identifying the complex event of left luggage in public places. A novel ontology is presented that represents the public place surveillance video data to represent various scenarios. Moreover, a reasoning is performed using Semantic Web Rule language (SWRL) for inferring relations. The proposed ontology-based approach extracts and represents salient information present in video data as a knowledge graph. The unusual events (Abandoned Luggage) is identified form the knowledge using SPARQL queries. Furthermore, the SPARQL queries can also be formulated to retrieve salient information and for question answering. The proposed framework is validated by identifying the complex events left luggage in PETS 2006, PETS 2007, AVSS 2007 and ABODA Dataset.
对监控系统生成的视频数据进行分析,需要一种有效的方法来表示、存储和检索,以便进行推理以识别异常事件。由于缺乏训练样本,现有的机器学习/深度学习方法通常很难识别异常事件。弃置行李识别是公共场所安全威胁的关键问题之一。它可能在不同的场景中以几种形式出现。然而,由于训练样本数量有限,每个可能的案例的训练都极具挑战性。在这项工作中,基于本体的推理和分析来识别公共场所遗留行李的复杂事件。提出了一种新的公共场所监控视频数据本体,以表示各种场景。此外,使用语义Web规则语言(SWRL)对推理关系进行推理。提出的基于本体的方法将视频数据中的重要信息提取并表示为知识图。使用SPARQL查询从知识中识别异常事件(遗弃的行李)。此外,还可以制定SPARQL查询来检索重要信息和回答问题。通过识别PETS 2006、PETS 2007、AVSS 2007和ABODA数据集中的复杂事件遗落行李,验证了该框架的有效性。
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引用次数: 0
Low-cost MOSFET based pH-sensor Using Ag/AgCl Glass electrodes 使用Ag/AgCl玻璃电极的低成本MOSFET ph传感器
Nandita Das, Bhavya Dhyani, Anjali Singh, Himani Dua Sehgal, Neha Garg, S. Kabra, Naina Gautam
A cost-effective pH sensing system using Ag/Agel glass electrode as a pH-sensitive material for a N-channel Metal Oxide Semiconductor Field Effect Transistor (MOSFETIRFZ44N) has been fabricated. The change in pH is evaluated by finding the change in transfer (IDS Vs VGS) and output characteristics (IDS Vs VDS) of a MOSFET. The gate terminal of MOSFET is connected to a glass electrode providing an electrochemical measurement cell in combination with a reference electrode. This paper presents experimental resultson pH-variation of the solution in contact with the glass electrodethat can be sensed by the MOSFE T. The change is studied through the variation in drain current and threshold voltage. At pH 3, threshold voltage is 2.304 V and at pH 12, threshold voltage is 2.789 V which suggests that as pH increases, threshold voltage also increases. Due to their low cost and ease in processing, such devices are possible candidates to be used as versatile, low-cost pH sensors. Research is being carried out with the aim of developing a pH sensor with high sensitivity and low cost.
利用Ag/Agel玻璃电极作为n沟道金属氧化物半导体场效应晶体管(MOSFETIRFZ44N)的pH敏感材料,制备了一种具有成本效益的pH传感系统。通过寻找MOSFET的转移(IDS Vs VGS)和输出特性(IDS Vs VDS)的变化来评估pH的变化。MOSFET的栅极端连接到玻璃电极,该玻璃电极与参比电极结合,提供电化学测量单元。本文介绍了MOSFE t能检测到与玻璃电极接触的溶液ph值变化的实验结果,并通过漏极电流和阈值电压的变化研究了溶液ph值的变化。pH值为3时,阈值电压为2.304 V, pH值为12时,阈值电压为2.789 V,说明随着pH值的增大,阈值电压也随之增大。由于其低成本和易于加工,这种设备可能被用作多功能,低成本的pH传感器。目前正在进行研究,目的是开发一种高灵敏度和低成本的pH传感器。
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引用次数: 0
Sensor and Button-Controlled Exoskeleton Arm 传感器和按钮控制的外骨骼手臂
R. S. Kumar, Kshitij Maurya, Muskan Rastogi, Muskan Gupta
This paper presents an overview of upper limb exoskeleton system research and development. These systems can be divided into four categories: assistive devices that replace impaired human function, rehabilitation devices that restore functionality lost due to injury or medical conditions, augmentation exoskeletons that improve users' abilities beyond their normal levels, and other devices like teleoperation and entertainment. The last two categories are typically used in industrial settings. The goal is to create an exoskeleton that is low-cost, streamlined, and wireless. Our solution will be one-of-a-kind since it will be a low-cost, ergonomic device controlled by sensors and buttons.
本文综述了上肢外骨骼系统的研究与开发。这些系统可以分为四类:替代受损人类功能的辅助设备,恢复因受伤或医疗状况而失去的功能的康复设备,提高用户能力超过正常水平的增强外骨骼,以及远程操作和娱乐等其他设备。后两类通常用于工业环境。目标是创造一种低成本、流线型和无线的外骨骼。我们的解决方案将是独一无二的,因为它将是一种由传感器和按钮控制的低成本、符合人体工程学的设备。
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引用次数: 0
P-BERT: Polished Up Bidirectional Encoder Representations from Transformers for Predicting Malicious URL to Preserve Privacy P-BERT:完善双向编码器表示从变压器预测恶意URL,以保护隐私
S. N, C. B. Akki
The usage of internet among user made online social network (OSN) like twitter, facebook, weibo to become popular. Users share their thoughts and perspective on aspects on OSN. In OSN the biggest security threat is the malicious Uniform Resource Locator (URLs) to prevent from privacy. Researchers have found few methods to detect the malicious URL by hard coded eminent features, block listing the URLs. These methods have limitations such as not all malicious URLs are blacklisted and many important features are not considered in hard coding method. Evolution of deep learning techniques have made to extract and analyses the features by own and solutions can be derived easily. In this paper, a novel feature engineering approach and polished up Bidirectional Encoder Representations from Transformers (BERT) is proposed to comprehensively detect the malicious Uniform Resource Locator (URLs). The results show that proposed model gives 98.79% of overall accuracy is achieved which out performs from the state of art models.
互联网在用户中的使用使得像twitter、facebook、微博这样的在线社交网络(OSN)变得流行起来。用户对OSN的各个方面分享自己的想法和看法。在OSN中,最大的安全威胁是恶意url (Uniform Resource Locator,统一资源定位符)。研究人员发现很少有方法通过硬编码的显著特征来检测恶意URL,阻止列出URL。这些方法存在一些局限性,如不是所有的恶意url都被列入黑名单,并且许多重要的特性在硬编码方法中没有考虑到。深度学习技术的发展使得可以自行提取和分析特征,并且可以很容易地推导出解决方案。本文提出了一种新的特征工程方法和改进的变形器双向编码器表示(BERT)来全面检测恶意的统一资源定位符(url)。结果表明,该模型的总体准确率达到了98.79%,优于现有的模型。
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引用次数: 1
Performance Evaluation of a Variational Quantum Classifier 变分量子分类器的性能评价
Nisheeth Saxena, Akriti Nigam
Quantum Machine Learning (QML) is a newly emerging research area at the intersection of classical machine learning (CML) and quantum computing (QC). Data is becoming voluminous rapidly, so it is challenging for classical computers to train Machine Learning (ML) models over massive datasets. The hope is that quantum physics' intrinsic features, such as entanglement, superposition, and interference, could be exploited as resources for training ML models on big datasets that would otherwise be relatively impossible for classical computers. It is theoretically proven that quantum computers have an exponential-time advantage over their classical counterparts in solving several problems, e.g., complex large dimensional matrix multiplication, factorization problem, unstructured database search, etc. QML models attempt to find a quantum advantage over their classical counterparts. Variational Quantum Classifiers (VQC) are hybrid quantum neural networks to perform the task of classification using QML models. VQC models in the present NISQ (Noisy Intermediate Scale Quantum — 50 to 100 qubits) era can produce comparable and even better results than Classical models. In this article, we examined the performance of a VQC while performing a simple binary classification task. In this article, we use a VQC to evaluate this method's performance empirically. We constructed a VQC to predict the label of fresh input for the typical Iris dataset comprising pairings of target outputs and training inputs. Our quantum classifier can reasonably predict species labels using only four qubits. These levels are fairly good compared to the accuracy levels attained by classical classifiers.
量子机器学习(QML)是经典机器学习(CML)和量子计算(QC)交叉的新兴研究领域。数据量迅速增加,因此经典计算机在海量数据集上训练机器学习(ML)模型具有挑战性。希望量子物理学的内在特征,如纠缠、叠加和干涉,可以作为在大数据集上训练ML模型的资源,否则经典计算机相对不可能做到这一点。从理论上证明,量子计算机在解决复杂的大维矩阵乘法、因数分解问题、非结构化数据库搜索等问题时,比经典计算机具有指数级的时间优势。QML模型试图找到优于经典模型的量子优势。变分量子分类器(VQC)是一种混合量子神经网络,它使用QML模型来执行分类任务。在目前的NISQ(有噪声的中间尺度量子- 50到100量子比特)时代,VQC模型可以产生与经典模型相当甚至更好的结果。在本文中,我们在执行简单的二进制分类任务时检查了VQC的性能。在本文中,我们使用VQC对该方法的性能进行了实证评估。我们构建了一个VQC来预测典型虹膜数据集的新输入标签,该数据集包括目标输出和训练输入的配对。我们的量子分类器仅使用四个量子比特就可以合理地预测物种标签。与经典分类器获得的准确度水平相比,这些水平相当好。
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引用次数: 0
期刊
2022 IEEE 9th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON)
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