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2023 International Conference in Advances in Power, Signal, and Information Technology (APSIT)最新文献

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Design and Implementation of Fractional Proportional-Integral Control For Hybrid Solar and Wind System 分式比例积分控制的太阳能与风能混合系统设计与实现
Abhisek Gantayat, S. Behera, J. K. Pradhan, A. Naik
This paper addresses issues arise due to the integration of wind solar photovoltaic hybrid generation (WSPVHG) system with the grid. WSPVHG system minimizes the power storing requirements and improves the system efficiency. Here, power from solar system is controlled by integer proportional integral (PI) controller where as a fractional order proportional integral controller (FOPI) is designed for wind generation system due to its highly stochastic in nature. To achieve faster response, the inner loop is designed with FOPI controller and outer loop by integer PI controller. The FOPI controller is designed by using pole placement technique by utilizing the performance specification. The performance of the proposed system is tested with the real-time simulator (OPAL-RT).
本文讨论了风能太阳能光伏混合发电(WSPVHG)系统与电网集成所产生的问题。WSPVHG系统最大限度地降低了电力存储需求,提高了系统效率。本文采用整数比例积分(PI)控制器对太阳能发电系统进行控制,而风力发电系统具有较高的随机性,因此设计了分数阶比例积分控制器(FOPI)。为了实现更快的响应,内环采用FOPI控制器,外环采用整数PI控制器。利用性能规范,采用极点放置技术设计了FOPI控制器。利用实时仿真器(OPAL-RT)对系统的性能进行了测试。
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引用次数: 0
Output Voltage Regulated Multiple Output Flyback Converter using PIC and STPIC 使用PIC和STPIC的输出稳压多输出反激变换器
A. Mishra, P. K. Nanda, Debiprasanna Das, A. Patra, Narayan Nahak, Lalit M. Sathapathy
This work focuses on the process of designing and the utilization of DC to DC fly back converter in closed loop system. Form six decagons conversion of DC to DC has found to be one of the major research areas in the field of power electronics engineering. For getting different levels of output voltage with single input, the advance systems like computer, telecommunication use single input single output dc to dc converter. This system has certain disadvantages like it is less efficient, low power density and the whole system becomes costly. In order to obtained the characteristics of being highly efficient and high power density the power converter with multiple output features are gaining attention. By using this multiple output converter the output is to be regulated for any type of load and source side disturbances. A Multiple Output Flyback Converter (MOFC) is designed, modeled and simulated in Simulink for controlling the output voltage as the desired value. Self Tuned Proportional Integral Controller (STPIC) or Conventional Proportional Integral Controller (PIC) are the two different methods which are utilized for getting the reference signal to obtain the switching pulse of the converter. Different parameters such as Settling Time (Ts), Rise Time (Tr) and Overshoot (OS) are obtained to analyze the performances. The responses of the used method are depicted for comparison of the outputs.
本文主要研究了闭环系统中DC - DC反激变换器的设计和使用过程。直流电到直流电的六十元转换已成为电力电子工程领域的主要研究方向之一。为了在单输入的情况下获得不同程度的输出电压,计算机、电信等先进系统都采用单输入单输出的dc - dc变换器。该系统存在效率低、功率密度低、整体成本高的缺点。为了获得高效率和高功率密度的特性,具有多种输出特性的功率变换器越来越受到人们的关注。通过使用这种多输出变换器,输出可以针对任何类型的负载和源侧干扰进行调节。设计了一种多输出反激变换器(MOFC),并在Simulink中对其进行了建模和仿真。自调谐比例积分控制器(STPIC)和传统比例积分控制器(PIC)是获取参考信号以获取变换器开关脉冲的两种不同方法。获取不同的参数,如沉降时间(Ts)、上升时间(Tr)和超调(OS),以分析性能。描述了所使用方法的响应,以便对输出进行比较。
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引用次数: 0
Bayesian Optimized Ensemble Decision Tree models for MT-VSC-HVDC Transmission Line Protection MT-VSC-HVDC输电线路保护的贝叶斯优化集成决策树模型
Abha Pragati, D. A. Gadanayak, S. Hasan, Manohar Mishra
Over the last few decades, the High Voltage Direct Current (HVDC) technology has experienced significant growth. HVDC grid technologies are increasingly being employed for strengthening transmission systems and improving connectivity. In cases of long-range and bulk power transmission, HVDC systems have proven to be an attractive option compared to HVAC systems. HVDC grids exhibit reduced power loss and almost negligible lines reactive power. Faults must be fixed promptly, regardless of any challenges. This study presents a fault detection and classification method based on Bayesian optimized decision tree classifiers for an MT-VSC-HVDC transmission system. The primary objective of this research is to extract the DC voltage and current signal through the relays installed in the HVDC network. Afterward, fourteen features are formulated using these signals for the experimentation. Based on these features, Bayesian-optimized decision tree classifier is used to identify and differentiate the faults events. The proposed approach enables rapid identification, faster detection, and fixation of both internal and external faults. The proposed approach is rigorously assessed for various probable fault circumstances simulated with varying transmission system operating parameters. This experimental approach considerably reduces the complexity and time required to identify faults at various points on the HVDC transmission grids with high precision.
在过去的几十年里,高压直流(HVDC)技术经历了显著的发展。高压直流电网技术越来越多地用于加强输电系统和改善连通性。在长距离和大容量电力传输的情况下,与暖通空调系统相比,HVDC系统已被证明是一个有吸引力的选择。高压直流电网的功率损耗降低,线路无功功率几乎可以忽略不计。无论遇到什么挑战,故障都必须及时修复。提出了一种基于贝叶斯优化决策树分类器的mt - vc - hvdc输电系统故障检测与分类方法。本研究的主要目的是通过安装在高压直流网络中的继电器提取直流电压和电流信号。然后,利用这些信号制定了14个特征用于实验。基于这些特征,采用贝叶斯优化决策树分类器对故障事件进行识别和区分。所提出的方法能够快速识别,更快地检测和固定内部和外部故障。该方法在不同的输电系统运行参数下模拟了各种可能的故障情况,并进行了严格的评估。该实验方法大大降低了对高压直流输电网各点故障进行高精度识别的复杂性和所需的时间。
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引用次数: 0
Optimal Tuning of Fractional Order PID controller using Nelder-Mead Algorithm for DC Motor Speed Control 基于Nelder-Mead算法的分数阶PID控制器的最优整定
Devee Dutta Mishra, Pratiti Padhi, Ankit Aniket Tripathy, S. Patnaik, P. Sahoo
This paper is about the study of tuning of Fractional Order PID (proportional, derivative and integral) controller using the Nelder-Mead algorithm for a separately excited DC motor's speed control. The parameters of the fractional order PID controller were determined via N elder-Mead algorithm by using the Integral Time Square Error (ITSE) as the objective function. To demonstrate the superior execution of the proposed approach, it has been compared with the Grey Wolf Optimization (GWO) based FOPID controller with the same DC speed control parameters. It has been noticed that when compared with the GWO based FOPID controller, the suggested technique with the ITSE as the objective function offers a settling time reduction of 64.99%, a rise time reduction of 61.22%, and a little overshoot. A sturdiness analysis of the Nelder-Mead Fractional Order PID technique was also performed by varying the DC motor parameters.
本文研究了用Nelder-Mead算法对分数阶PID(比例、导数和积分)控制器进行整定的方法,并将其应用于单独励磁直流电动机的调速控制。分数阶PID控制器的参数以积分时间平方误差(ITSE)为目标函数,采用N elder-Mead算法确定。为了证明该方法的优越执行性,将其与具有相同直流速度控制参数的基于灰狼优化(GWO)的FOPID控制器进行了比较。结果表明,与基于GWO的FOPID控制器相比,以ITSE为目标函数的FOPID控制器的稳定时间减少了64.99%,上升时间减少了61.22%,并有一点超调。通过改变直流电机参数,对Nelder-Mead分数阶PID技术进行了稳健性分析。
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引用次数: 0
Machine Learning-based Weather Prediction: A Comparative Study of Regression and Classification Algorithms 基于机器学习的天气预报:回归与分类算法的比较研究
Sonal Wadhwa, R. Tiwari
Accurate weather forecasting is essential in many industries, including agriculture, transportation, and disaster management, making it a prime use case for machine learning algorithms. In this study, we investigate how to forecast several types of weather, including rain, sunshine, clouds, fog, drizzle, and snow, using a variety of fundamental machine learning methods and boosting algorithms. To train and evaluate the various algorithms, we utilized a dataset made up of historical meteorological data, including characteristics like temperature, humidity, wind speed, and pressure. We performed tests on many machine learning methods, some of which you may be familiar with: decision trees, random forests, naive bayes, k-nearest neighbors, and support vector machines. We also used boosting techniques like XGBoost and AdaBoost to further enhance the precision of our forecasts. Our results indicated that XGBoost and AdaBoost, two popular boosting algorithms, achieved the highest levels of accuracy (87.86% and 87.33%) compared to the other algorithms we tested. The findings were verified using ROC Curve Analysis and Lift Curve Analysis, which demonstrated that the XGBoost and AdaBoost models performed better in terms of true positive rate, false positive rate, and lift.
准确的天气预报在许多行业都是必不可少的,包括农业、交通和灾害管理,这使其成为机器学习算法的主要用例。在这项研究中,我们研究了如何使用各种基本的机器学习方法和增强算法来预测几种类型的天气,包括雨、阳光、云、雾、毛毛雨和雪。为了训练和评估各种算法,我们使用了一个由历史气象数据组成的数据集,包括温度、湿度、风速和压力等特征。我们对许多机器学习方法进行了测试,其中一些你可能很熟悉:决策树、随机森林、朴素贝叶斯、k近邻和支持向量机。我们还使用了增强技术,如XGBoost和AdaBoost,以进一步提高我们的预测精度。我们的结果表明,与我们测试的其他算法相比,XGBoost和AdaBoost这两种流行的增强算法达到了最高的准确率(87.86%和87.33%)。通过ROC曲线分析和升力曲线分析验证了研究结果,结果表明XGBoost和AdaBoost模型在真阳性率、假阳性率和升力方面表现更好。
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引用次数: 0
Early Stage Ovarian Cancer Prediction using Machine Learning 使用机器学习预测早期卵巢癌
C. Nayak, A. Tripathy, Manoranjan Parhi, S. Barisal
The most dangerous cancer that affects women is ovarian cancer and the early-stage diagnosis is difficult. To overcome this issue, machine learning techniques being used to predict the early stage of ovarian cancer in women. This paper discusses the different features that link with the prediction of cancer through clinical data. The different machine learning algorithms, like logistic regression, support vector machines (SVM), and decision trees are the primary focus of the paper to predict cancer at the early stage. This paper focuses on the accuracy of different models like logistic regression, support vector machine, decision tree used to predict the early stage cancer. The paper discusses an integrated approach that uses random forest feature selection method and a random forest classifier to give more accurate results. The proposed model has accuracy of 91% as compared to the other models with accuracy 81%,84%,83% respectively.
影响女性的最危险的癌症是卵巢癌,早期诊断是困难的。为了解决这个问题,机器学习技术被用于预测女性卵巢癌的早期阶段。本文通过临床资料探讨了与癌症预测相关的不同特征。不同的机器学习算法,如逻辑回归、支持向量机(SVM)和决策树,是本文在早期预测癌症的主要重点。本文重点研究了逻辑回归、支持向量机、决策树等不同模型用于早期癌症预测的准确性。本文讨论了一种将随机森林特征选择方法与随机森林分类器相结合的方法,以获得更准确的结果。该模型的准确率为91%,而其他模型的准确率分别为81%、84%和83%。
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引用次数: 1
A Comparative Study on Keyword Extraction and Generation of Synonyms in Natural Language Processing 自然语言处理中关键词提取与同义词生成的比较研究
Rasmi Rani Dhala, A.V.S Pavan Kumar, S. Panda
Natural Language Processing (NLP) is an emerging field that aims to enable machines to understand and interpret human language. Keyword extraction and synonym generation are essential tasks in natural language processing. They play a significant role in information retrieval, text classification, and sentiment analysis. In this paper, we explore three different approaches to keyword extraction and synonym generation: rule-based model, statistical model, and extreme learning machine (ELM) model. We compare the performance of each method on a corpus of text and analyze the strengths and weaknesses of each approach. Our results show that the ELM model outperforms the other two methods in terms of accuracy and efficiency.
自然语言处理(NLP)是一个新兴领域,旨在使机器能够理解和解释人类语言。关键词提取和同义词生成是自然语言处理中的重要任务。它们在信息检索、文本分类和情感分析中发挥着重要作用。在本文中,我们探讨了三种不同的关键字提取和同义词生成方法:基于规则的模型、统计模型和极限学习机(ELM)模型。我们比较了每种方法在文本语料库上的性能,并分析了每种方法的优缺点。结果表明,ELM模型在准确率和效率方面都优于其他两种方法。
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引用次数: 0
Features of Low and Highly Susceptible Individuals in Retail Investment Fraud: A Machine Learning – Based Analysis 零售投资欺诈中低易感和高易感个体的特征:基于机器学习的分析
Princess Elmalyn B. Malik, Wen James P. Bulasa, Gernel S. Lumacad, Lester Dave T. Dagtay, Cookie J. Fajardo
Investment fraud/scam is defined as the intentional misinterpretation, concealment, or omission of facts regarding promised goods, services, or other expectations by putting funds into investments that are not real, unnecessary, never intended to be fulfilled, or intentionally distorted for the purpose of monetary gain. We present in this paper, an analysis of individuals' features/characteristics of those who are highly susceptible to retail investment scamming using machine learning (ML) methods. Purposive sampling is applied in data collection, asking only those who've at least experienced being scammed in a retail investment. Participants' demographic profile, emotional intelligence scores, personality traits scores and financial literacy levels are collected as parameters for the analysis. The data (N = 177) is first submitted to a Boruta algorithm for feature selection and out of nineteen (19) input features, only seven (7) features are confirmed to be important in determining low or high likelihood of susceptibility in retail investment scamming. Afterwards, a 2 - cluster solution is revealed using the $k$ - means clustering. Cluster 1 is composed of individuals having higher number of times being scammed - characterized by higher social class, higher income, higher emotional intelligence scores, higher levels of agreeableness, openness and extraversion, and lower financial knowledge. Cluster 2 is composed of individuals having lesser number of times being scammed - characterized by lower social class, lower income, lower emotional intelligence scores, lower levels of agreeableness, openness and extraversion and higher financial knowledge. Findings of this study may serve as basis for prevention, protection and enforcement against retail investment frauds.
投资欺诈/骗局被定义为故意曲解、隐瞒或遗漏有关承诺的商品、服务或其他期望的事实,将资金投入不真实、不必要、从未打算实现的投资,或故意扭曲以获取金钱利益。在本文中,我们使用机器学习(ML)方法分析了那些极易受到零售投资欺诈影响的个人特征/特征。数据收集采用目的性抽样,只询问那些至少在零售投资中被骗过的人。参与者的人口统计资料、情商得分、人格特质得分和金融知识水平被收集为分析参数。数据(N = 177)首先提交给Boruta算法进行特征选择,在十九(19)个输入特征中,只有七(7)个特征被确认在确定零售投资欺诈的低或高易感性可能性方面是重要的。在此基础上,利用k均值聚类给出了一个双聚类解。集群1由被骗次数较多的个体组成,其特征是社会阶层较高,收入较高,情商得分较高,亲和性、开放性和外向性水平较高,金融知识水平较低。集群2由被骗次数较少的个体组成,其特征是社会阶层较低,收入较低,情商得分较低,亲和性、开放性和外向性水平较低,金融知识较高。本研究结果可作为预防、保护和执法零售投资欺诈的依据。
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引用次数: 0
Biometric Cryptosystem with Deep Learning: A New Frontier in Security 深度学习的生物识别密码系统:安全领域的新前沿
Prabhjot Kaur, N. Kumar
The Biometric cryptosystem uses a variety of methods to protect templates. In this work, a deep learning-based approach to improve the robustness of the fuzzy vault scheme in biometric cryptosystems. Our approach uses a CNN to extract distinctive features from biometric data and generate the polynomial equation that unlocks the vault. We evaluate our approach on a dataset of fingerprint images and demonstrate that it achieves higher accuracy of 89.9% than traditional methods. The relation between original and decrypted image is computed based on various parameters such as Cr., MSE, MAE etc. and overall fair performance is achieved on four fingerprint databases.
生物识别密码系统使用多种方法来保护模板。在这项工作中,一种基于深度学习的方法来提高生物识别密码系统中模糊拱顶方案的鲁棒性。我们的方法使用CNN从生物特征数据中提取独特的特征,并生成打开保险库的多项式方程。我们在指纹图像数据集上评估了我们的方法,并证明它比传统方法达到了89.9%的更高准确率。基于Cr、MSE、MAE等参数计算原始图像与解密图像之间的关系,在4个指纹数据库上取得了比较好的总体性能。
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引用次数: 0
Environmental Economic Dispatch of Hybrid Renewable Energy using PBMWOA 基于PBMWOA的混合可再生能源环境经济调度
S. Kar, D. Dash, Renu Sharma
The Position Based Mutation with Whale Optimization Algorithm (PBMWOA) is suggested in this article as a method for solving Environmental Economic Dispatch (EED) issues that affect solar, wind, and thermal power systems together. Also, there are restrictions, and test cases are used to verify and assess the efficacy of the suggested approach. After that, the test results are matched to the results already received from SPEA 2 and PBMWOA. It has been determined from the comparative analysis that the submitted PBMWOA can offer a better answer.
本文提出了一种基于位置突变的鲸鱼优化算法(PBMWOA)来解决同时影响太阳能、风能和火电系统的环境经济调度(EED)问题。同样,也有一些限制,测试用例被用来验证和评估建议方法的有效性。然后,将测试结果与已经从spea2和PBMWOA中获得的结果进行匹配。通过对比分析确定,提交的PBMWOA可以提供更好的答案。
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引用次数: 0
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2023 International Conference in Advances in Power, Signal, and Information Technology (APSIT)
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