Journal of Electrical and Computer Engineering最新文献_第2页

Track Circuits Fault Diagnosis Method Based on the UNet-LSTM Network (ULN) 基于 UNet-LSTM 网络 (ULN) 的轨道电路故障诊断方法

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-02-03 DOI: 10.1155/2024/1547428

Weijie Tao, Xiaowei Li, Zheng Li

{"title":"Track Circuits Fault Diagnosis Method Based on the UNet-LSTM Network (ULN)","authors":"Weijie Tao, Xiaowei Li, Zheng Li","doi":"10.1155/2024/1547428","DOIUrl":"https://doi.org/10.1155/2024/1547428","url":null,"abstract":"As a commonly used mode of transportation in people’s daily lives, the normal operation of railway transportation is crucial. The track circuit, as a key component of the railway transportation system, is prone to malfunctions due to environmental factors. However, the current method of inspecting track circuit faults still relies on the experience of on-site personnel. In order to improve the efficiency and accuracy of fault diagnosis, we propose to establish an intelligent fault diagnosis system. Considering that the fault data are a one-dimensional time series, this paper presents a fault diagnosis method based on the UNet-LSTM network (ULN). The LSTM network is established on the basis of fault data and used for ZPW-2000A track circuit fault diagnosis. However, the use of a single LSTM network has a high error rate in the common fault diagnosis of track circuits. Therefore, this paper proposes a feature extraction method based on the UNet network. This method is used to extract the features of the original data and then input them into the LSTM network for fault diagnosis. Through experiments with on-site fault data, it has been verified that this method can accurately classify seven common track circuit faults. Finally, the superiority of the method is verified by comparing it with other commonly used fault classification methods.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139808101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

N − 1 Security Criteria Based Integrated Deterministic and Probabilistic Framework for Composite Power System Reliability N - 1 基于安全标准的确定性和概率性综合电力系统可靠性框架

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-02-01 DOI: 10.1155/2024/5518874

Tanmay Jain, Kusum Verma, Mahendra Bhadu

{"title":"N − 1 Security Criteria Based Integrated Deterministic and Probabilistic Framework for Composite Power System Reliability","authors":"Tanmay Jain, Kusum Verma, Mahendra Bhadu","doi":"10.1155/2024/5518874","DOIUrl":"https://doi.org/10.1155/2024/5518874","url":null,"abstract":"Unpredictable variations in load demand and unanticipated component failures are progressively impacting the operation of modern power systems, making system evaluation more stochastic in nature. Although deterministic approaches were formerly the norm for determining system status, probabilistic approaches have greatly improved the capacity to capture the stochastic behavior characteristic of power system operations. The presented work in the paper recommends the use of probabilistic modelling approaches with deterministic approaches, highlighting their crucial function in augmenting the reliability and security of contemporary power systems to unanticipated failures. In this paper, N − 1 security criteria based reliability of the composite power system (CPS) is proposed using an integrated deterministic and probabilistic framework (D-P) considering outage of the transmission line. For the deterministic approach (DA), line overloading on available lines is determined using the static security index (SSI). For the probabilistic approach (PA), reliability indices such as expected loss of power (ELOP), expected frequency of contingency (EFOC), expected loss of load (ELOL), probability of load curtailment (PLC), and expected duration of load curtailments (EDLC) are calculated. Further, for each contingency, a performance index is determined using both approaches to assess the severity of the contingency that occurred on the power system. Based on the N − 1 security criteria based reliability analysis using an integrated D-P framework, a credible critical set of transmission lines is obtained, which can serve as important information to system operators. The proposed techniques have been tested on IEEE 24 bus reliability test system (RTS).","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139882288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

N − 1 Security Criteria Based Integrated Deterministic and Probabilistic Framework for Composite Power System Reliability N - 1 基于安全标准的确定性和概率性综合电力系统可靠性框架

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-02-01 DOI: 10.1155/2024/5518874

Tanmay Jain, Kusum Verma, Mahendra Bhadu

{"title":"N − 1 Security Criteria Based Integrated Deterministic and Probabilistic Framework for Composite Power System Reliability","authors":"Tanmay Jain, Kusum Verma, Mahendra Bhadu","doi":"10.1155/2024/5518874","DOIUrl":"https://doi.org/10.1155/2024/5518874","url":null,"abstract":"Unpredictable variations in load demand and unanticipated component failures are progressively impacting the operation of modern power systems, making system evaluation more stochastic in nature. Although deterministic approaches were formerly the norm for determining system status, probabilistic approaches have greatly improved the capacity to capture the stochastic behavior characteristic of power system operations. The presented work in the paper recommends the use of probabilistic modelling approaches with deterministic approaches, highlighting their crucial function in augmenting the reliability and security of contemporary power systems to unanticipated failures. In this paper, N − 1 security criteria based reliability of the composite power system (CPS) is proposed using an integrated deterministic and probabilistic framework (D-P) considering outage of the transmission line. For the deterministic approach (DA), line overloading on available lines is determined using the static security index (SSI). For the probabilistic approach (PA), reliability indices such as expected loss of power (ELOP), expected frequency of contingency (EFOC), expected loss of load (ELOL), probability of load curtailment (PLC), and expected duration of load curtailments (EDLC) are calculated. Further, for each contingency, a performance index is determined using both approaches to assess the severity of the contingency that occurred on the power system. Based on the N − 1 security criteria based reliability analysis using an integrated D-P framework, a credible critical set of transmission lines is obtained, which can serve as important information to system operators. The proposed techniques have been tested on IEEE 24 bus reliability test system (RTS).","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139822216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generation of Smoke Dataset for Power Equipment and Study of Image Semantic Segmentation 电力设备烟雾数据集的生成与图像语义分割研究

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-01-11 DOI: 10.1155/2024/9298478

Rong Chang, Zhengxiong Mao, Jian Hu, Haicheng Bai, Anning Pan, Yang Yang, Shan Gao

{"title":"Generation of Smoke Dataset for Power Equipment and Study of Image Semantic Segmentation","authors":"Rong Chang, Zhengxiong Mao, Jian Hu, Haicheng Bai, Anning Pan, Yang Yang, Shan Gao","doi":"10.1155/2024/9298478","DOIUrl":"https://doi.org/10.1155/2024/9298478","url":null,"abstract":"Fire in power equipment has always been one of the main hazards of power equipment. Smoke detection and recognition have always been extremely important in power equipment, as they can provide early warning before a fire breaks out. Compared to relying on smoke concentration for recognition, image-based smoke recognition has the advantage of being unaffected by indoor and outdoor environments. This paper addresses the problems of limited smoke data, difficult labeling, and insufficient research on recognition algorithms in power systems. We propose using three-dimensional virtual technology to generate smoke and image masks and using environmental backgrounds such as HDR (high dynamic range imaging) lighting to realistically combine smoke and background. In addition, to address the characteristics of smoke in power equipment, a dual UNet model named DS-UNet is proposed. The model consists of a deep and a shallow network structure, which can effectively segment the details of smoke in power equipment and handle partial occlusion. Finally, DS-UNet is compared with other smoke segmentation networks with similar structures, and it demonstrates better smoke segmentation performance.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139533926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast Partial Shading Detection on PV Modules for Precise Power Loss Ratio Estimation Using Digital Image Processing 利用数字图像处理快速检测光伏组件上的部分遮光，以实现精确的功率损耗率估算

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-01-04 DOI: 10.1155/2024/9385602

Eko Adhi Setiawan, Muhammad Fathurrahman, Radityo Fajar Pamungkas, Samsul Ma’arif

引用次数: 0

Optimization of a Hybrid Off-Grid Solar PV—Hydro Power Systems for Rural Electrification in Cameroon 优化喀麦隆农村电气化离网太阳能光伏-水力发电混合系统

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-01-02 DOI: 10.1155/2024/4199455

Chu Donatus Iweh, Guy Clarence Sèmassou, R. Ahouansou

{"title":"Optimization of a Hybrid Off-Grid Solar PV—Hydro Power Systems for Rural Electrification in Cameroon","authors":"Chu Donatus Iweh, Guy Clarence Sèmassou, R. Ahouansou","doi":"10.1155/2024/4199455","DOIUrl":"https://doi.org/10.1155/2024/4199455","url":null,"abstract":"The use of decentralized renewable energy systems will continue to play a significant role in electricity generation especially in developing countries where grid expansion to most remote areas is uneconomical. The income levels of these off-grid communities are often low, such that there is a need for the delivery of cost-effective energy solutions through optimum control and sizing of energy system components. This paper aims at minimizing the net present cost (NPC) and the levelised cost of energy (LCOE). The study presents a hybrid power system involving a hydroelectric, solar photovoltaic (PV), and battery system for a rural community in Cameroon. The optimization of the system was done using HOMER Pro and validated using a meta-heuristic algorithm known as genetic algorithm (GA). The GA approach was programmed using the MATLAB software. After the HOMER simulation, the optimal power capacity of 3 kW solar PV, 334.89 Ah battery, and 32.2 kW microhydropower was used to meet the load. The village load profile had a daily energy usage of 431.32 kWh/day and a peak power demand of 38.49 kW. The optimized results showed an NPC and LCOE of $90,469.16 and 0.0453 $/kWh, respectively. The system configuration was tested against an increase in hydropower capacity, and it was observed that increasing the hydropower capacity has the ability to significantly reduce the LCOE as well as the battery and solar PV size. A comparative analysis of the two approaches showed that the optimization using GA was more cost-effective than HOMER Pro with the least LCOE of 0.0344 $/kWh and NPC of $86,990.94 as well as a loss of power supply probability (LPSP) of 0.99%. In addition, the GA method gave more hydropower generation than HOMER Pro. This supports the fact that stochastic methods are more realistic and economically viable. They also accurately predict system operation than deterministic methods.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Instance Contingent Fusion for the Verification of Infant Fingerprints 用于验证婴儿指纹的多实例权变融合技术

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2024-01-02 DOI: 10.1155/2024/7728707

T. Odu, Moses O. Olaniyan, T. Ogunfunmi, Isaac A. Samuel, J. Badejo, Atayero

{"title":"Multi-Instance Contingent Fusion for the Verification of Infant Fingerprints","authors":"T. Odu, Moses O. Olaniyan, T. Ogunfunmi, Isaac A. Samuel, J. Badejo, Atayero","doi":"10.1155/2024/7728707","DOIUrl":"https://doi.org/10.1155/2024/7728707","url":null,"abstract":"It is imperative to establish an automated system for the identification of neonates (1–28 days old) and infants (29 days–12 months old) through the utilisation of the readily accessible 500 ppi fingerprint reader. This measure is crucial in addressing the issue of newborn swapping, facilitating the identification of missing children, monitoring immunisation records, maintaining comprehensive medical history, and other related purposes. The objective of this study is to demonstrate the potential for future identification of infants using fingerprints obtained from a 500 ppi fingerprint reader by employing a fusion technique that combines multiple instances of fingerprints, specifically the left thumb and right index fingers. The fingerprints were acquired from babies who were between the ages of one day and six months at the enrolment session. The sum-score fusion algorithm was implemented. The approach mentioned above yielded verification accuracies of 73.8%, 69.05%, and 57.14% for time intervals of 1 month, 3 months, and 6 months, respectively, between the enrolment and query fingerprints.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139390464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Voice-Based Personal Assistant for Mental Health in Kreol Morisien 基于语音的 Kreol Morisien 心理健康私人助理

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2023-12-28 DOI: 10.1155/2023/5532967

B. Gobin-Rahimbux, N. Gooda Sahib, N. Peerthy, A. Taylor

{"title":"A Voice-Based Personal Assistant for Mental Health in Kreol Morisien","authors":"B. Gobin-Rahimbux, N. Gooda Sahib, N. Peerthy, A. Taylor","doi":"10.1155/2023/5532967","DOIUrl":"https://doi.org/10.1155/2023/5532967","url":null,"abstract":"Voice-based smart personal assistants (VSPAs) are applications that recognize speech-based input and perform a task. In many domains, VSPA can play an important role as it mimics an interaction with another human. For low-resource languages, developing a VSPA can be challenging due to the lack of available audio datasets. In this work, a VSPA in Kreol Morisien (KM), the native language of Mauritius, is proposed to support users with mental health issues. Seven conversational flows were considered, and two speech recognition models were developed using CMUSphinx and DeepSpeech, respectively. A comparative user evaluation was conducted with 17 participants who were requested to speak 151 sentences of varying lengths in KM. It was observed that DeepSpeech was more accurate with a word error rate (WER) of 18% compared to CMUSphinx at 24%, that is, DeepSpeech fully recognized 76 sentences compared to CMUSphinx where only 57 sentences were fully recognized. However, DeepSpeech could not fully recognize any 7-word sentences, and thus, it was concluded that the contributions of DeepSpeech to automatic speech recognition in KM should be further explored. Nevertheless, this research is a stepping stone towards developing more VSPA to support various activities among the Mauritian population.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Sharing of Multiple Virtual Power Plants Based on a Peer Aggregation Model 基于对等聚合模型的多个虚拟发电厂的能源共享

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2023-12-23 DOI: 10.1155/2023/9130209

Sheng Li, Yujie Huang

{"title":"Energy Sharing of Multiple Virtual Power Plants Based on a Peer Aggregation Model","authors":"Sheng Li, Yujie Huang","doi":"10.1155/2023/9130209","DOIUrl":"https://doi.org/10.1155/2023/9130209","url":null,"abstract":"With the increasing number of virtual power plants (VPP) participating in market transactions, the joint operation and energy sharing mode of multiple virtual power plants (multi-VPP) has attracted attention. A peer aggregation model for the multi-VPP energy sharing is proposed based on sharing price. At the VPP autonomous optimization level, each VPP operator formulates an autonomous optimization strategy based on the price incentives and the internal resource parameters and adopts a robust optimization method to improve the strategy’s robustness. At the overall level, a sharing level index is introduced to formulate the sharing price mechanism and an overall sharing strategy is proposed. The case simulation results show that compared with the independent operation of each VPP, participating in energy sharing can effectively promote the overall consumption of renewable energy and the overall operating cost is reduced by 18%. The introduction of the sharing level index into the sharing price can effectively improve the rationality of the formulated sharing price, and the net electricity load fluctuation has a greater impact on the system cost than the thermal load fluctuation.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139161545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Dual-Agent Approach for Coordinated Task Offloading and Resource Allocation in MEC MEC 中协调任务卸载和资源分配的双代理方法

IF 2.4

Journal of Electrical and Computer Engineering Pub Date : 2023-12-21 DOI: 10.1155/2023/6134837

Jiadong Dong, Kai Pan, Chunxiang Zheng, Lin Chen, Shunfeng Wu, Xiaoling Zhang

{"title":"A Dual-Agent Approach for Coordinated Task Offloading and Resource Allocation in MEC","authors":"Jiadong Dong, Kai Pan, Chunxiang Zheng, Lin Chen, Shunfeng Wu, Xiaoling Zhang","doi":"10.1155/2023/6134837","DOIUrl":"https://doi.org/10.1155/2023/6134837","url":null,"abstract":"Multiaccess edge computing (MEC) is a novel distributed computing paradigm. In this paper, we investigate the challenges of task offloading scheduling, communication bandwidth, and edge server computing resource allocation for multiple user equipments (UEs) in MEC. Our primary objective is to minimize system latency and local energy consumption. We explore the binary offloading and partial offloading methods and introduce the dual agent-TD3 (DA-TD3) algorithm based on the deep reinforcement learning (DRL) TD3 algorithm. The proposed algorithm coordinates task offloading scheduling and resource allocation for two intelligent agents. Specifically, agent 1 overcomes the action space explosion problem caused by the increasing number of UEs, by utilizing both binary and partial offloading. Agent 2 dynamically allocates communication bandwidth and computing resources to adapt to different task scenarios and network environments. Our simulation experiments demonstrate that the binary and partial offloading schemes of the DA-TD3 algorithm significantly reduce system latency and local energy consumption compared with deep deterministic policy gradient (DDPG) and other offloading schemes. Furthermore, the partial offloading optimization scheme performs the best.","PeriodicalId":46573,"journal":{"name":"Journal of Electrical and Computer Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138949374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0