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Algerian Journal of Signals and Systems最新文献

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Comparison study among the different existing loss of excitation protection schemes in synchronous generator 同步发电机现有不同失磁保护方案的比较研究
Algerian Journal of Signals and Systems Pub Date : 2021-12-31 DOI: 10.51485/ajss.v6i4.146
H. Bentarzi, A. Mati, J. Maun
{"title":"Comparison study among the different existing loss of excitation protection schemes in synchronous generator","authors":"H. Bentarzi, A. Mati, J. Maun","doi":"10.51485/ajss.v6i4.146","DOIUrl":"https://doi.org/10.51485/ajss.v6i4.146","url":null,"abstract":"Synchronous generator is the most important element of a power system and its fast and reliable protection is crucial. One of the most abnormal conditions in a generator is loss of excitation (LOE) which is harmful to both the generator and the power system. This condition should be detected and the generator isolated from the system to avoid generator damage as well as power system instability. \u0000This work presents an experimental study and comparison of the two conventional LOE protection schemes, negative-offset and positive-offset mho element under different conditions. The results show that the two schemes can detect LOE fault under total or partial LOE conditions, however in terms of speed (fault detection time) the positive offset scheme is faster than the negative offset scheme under all loading conditions. Besides, the two LOE protection schemes are reliable and do not operate under power swing disturbances caused by any type of external faults.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123465109","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
Optimal Placement of Fault Passage Indicators in Distribution Networks using Genetic Algorithms 配电网故障通道指标的遗传算法优化配置
Algerian Journal of Signals and Systems Pub Date : 2021-12-31 DOI: 10.51485/ajss.v6i4.139
Aem Recioui, Mounir Merdj, Anouar Kamli
{"title":"Optimal Placement of Fault Passage Indicators in Distribution Networks using Genetic Algorithms","authors":"Aem Recioui, Mounir Merdj, Anouar Kamli","doi":"10.51485/ajss.v6i4.139","DOIUrl":"https://doi.org/10.51485/ajss.v6i4.139","url":null,"abstract":"Fault Passage Indicators (FPIs); also named Faulted Circuit Indicators (FCIs), have been under development for the last 70 years including new capabilities to satisfy the needs of the distribution network operators. In order to improve system stability, these devices can be deployed along the feeder to reduce, or even eliminate, the uncertainty about the fault location. The number and location of FPIs affects the network reliability that can lead to extra charge on the distribution companies as well as the consumers. In this work, the optimal number and location of fault passage indicators in Power Distribution Networks (PDN) are determined. The problem is cast as an optimization task with a special economical combined objective function and solved using the genetic algorithms. The work has been tested on the two case studies, IEEE 9 bus and IEEE 33 bus systems.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130819367","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 New Frame Work of Real-Time Charaterization Battery Platform 电池实时表征平台的新框架
Algerian Journal of Signals and Systems Pub Date : 2021-12-31 DOI: 10.51485/ajss.v6i4.145
H. Bentarzi, Mahdi Abdenour Litoufi, N. Tair, T. Azzouni
{"title":"A New Frame Work of Real-Time Charaterization Battery Platform","authors":"H. Bentarzi, Mahdi Abdenour Litoufi, N. Tair, T. Azzouni","doi":"10.51485/ajss.v6i4.145","DOIUrl":"https://doi.org/10.51485/ajss.v6i4.145","url":null,"abstract":"Batteries play an important role in the performance enhancement of power grids including renewable energy systems. In order to attain the rated service life and the longest possible run time of a battery, it is necessary to be monitored and maintained. This needs for an effective real-time characterization platform. Therefore, this paper presents a new frame work of a real-time battery monitoring system that will be able to provide the user with battery parameters as well as a recording file of the instantaneous variables values. To perform this task, a PC based platform associated with acquisition board is developed to automate the battery characterization system. \u0000A graphical user interface (GUI) that allows users to read the Open Circuit Voltage (OCV), current, and ambient temperature of the battery during its charging or discharging is developed using Labview software. It is easy and possible for data to be recorded, including voltage, current, during both charging and discharging process. These recording experimental data can be used for a precise and efficient estimation of the state of charge as well as for aging study.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132944536","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: 1
Bang-Bang Attitude Control During East-West Station Keeping For Geostationary Satellite 地球同步卫星东西站保持时的砰砰姿态控制
Algerian Journal of Signals and Systems Pub Date : 2021-09-30 DOI: 10.51485/AJSS.V6I3.132
Elhassen Benfriha
{"title":"Bang-Bang Attitude Control During East-West Station Keeping For Geostationary Satellite","authors":"Elhassen Benfriha","doi":"10.51485/AJSS.V6I3.132","DOIUrl":"https://doi.org/10.51485/AJSS.V6I3.132","url":null,"abstract":"This paper investigates the East-West station keeping strategy of geostationary satellites which must be performed to correct the drift caused by natural perturbation forces. The attitude control requirements as well as the pointing accuracy must be maintained during the station-keeping maneuver in order to assure the mission services. The propulsion system (chemical thrusters) is used to control both the orbit control (station keeping) and the attitude control where the ON/OFF thrusters pulses are managed using Bang-Bang controller with dead-band technique. Simulation results can clearly illustrate the feasibility and the effectiveness of the proposed control strategy.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"151 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128915389","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: 1
Design of Microstrip Low-pass and Band-pass Filters using Artificial Neural Networks 利用人工神经网络设计微带低通和带通滤波器
Algerian Journal of Signals and Systems Pub Date : 2021-09-30 DOI: 10.51485/AJSS.V6I3.134
Ahmed Hathat
{"title":"Design of Microstrip Low-pass and Band-pass Filters using Artificial Neural Networks","authors":"Ahmed Hathat","doi":"10.51485/AJSS.V6I3.134","DOIUrl":"https://doi.org/10.51485/AJSS.V6I3.134","url":null,"abstract":"Usually the design of microstrip filters is done using simulators and classical approximation methods as Butterworth and Chebyshev, these techniques takes a lot of time to run for designing filters. In this paper we develop a faster artificial neural network model for designing a microstrip low-pass and band-pass filters for all rang of operating frequency , when the input are the dimensions of filter, operating frequency, the features of substrate, and the output are the transmission and reflection coefficients. The database uses for training this model is generated by a linear simulator based on circuits model. Two filters designed by the developed model are a stepped impedance low-pass filter with a cut-off frequency of 1 GHz and a parallel coupled-line band-pass filter with fractional bandwidth of 25 % and a central frequency of 2.45 GHz. The results of simulation are compared with desired results and the effectiveness of this method has been proven.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121894309","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: 3
Attitude stabilization of slosh-coupled satellite with flexible appendage 带有柔性附属物的晃动耦合卫星姿态稳定
Algerian Journal of Signals and Systems Pub Date : 2021-09-30 DOI: 10.51485/AJSS.V6I3.131
J. E. Benmansour, B. Khouane
{"title":"Attitude stabilization of slosh-coupled satellite with flexible appendage","authors":"J. E. Benmansour, B. Khouane","doi":"10.51485/AJSS.V6I3.131","DOIUrl":"https://doi.org/10.51485/AJSS.V6I3.131","url":null,"abstract":"In this paper, a robust control scheme is proposed for flexible satellite attitude stabilization in the presence of multiple disturbances including the disturbances caused by flexible appendages with the sloshing dynamics of the liquid propellant and external disturbances from space environment. A composite control scheme is designed by combining a composite disturbance observer (CDO) with feed-forward controller. First, a CDO is constructed to estimate the lumped disturbances, where the lumped disturbances in the system are equivalent into two parts: a slow varying disturbance and periodic disturbance.  Then a PD controller is adopted to stabilize the system and restrain the residue disturbance. Finally, the simulation results for flexible satellite verify that the proposed method can make the satellite asymptotically stable and demonstrate the effectiveness of the proposed scheme.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132145845","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: 1
Load Balancing in Smart Grids using Multi-Objective Evolutionary Optimization 基于多目标进化优化的智能电网负载均衡
Algerian Journal of Signals and Systems Pub Date : 2021-09-30 DOI: 10.51485/AJSS.V6I3.138
M. Bouaraki, F. Z. Dekhandji, Lina Amel Abdi, Aem Recioui
{"title":"Load Balancing in Smart Grids using Multi-Objective Evolutionary Optimization","authors":"M. Bouaraki, F. Z. Dekhandji, Lina Amel Abdi, Aem Recioui","doi":"10.51485/AJSS.V6I3.138","DOIUrl":"https://doi.org/10.51485/AJSS.V6I3.138","url":null,"abstract":"The work deals with the balance between the supplied and consumed power in a residential area. An optimization task is formulated and solved. The extension of the optimization task formulation to include renewable sources is also provided. It is shown in the results that using the deployed optimization technique, a significant reduction in the energy usage cost and the waiting time of the appliances (delay) for residential consumers can be achieved. This work can be used in smart home and smart cities applications.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126293574","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: 1
Dynamic Performance Improvement of Doubly Fed Induction Motor Based on Hybrid Computational Technique and Variable Structure Control 基于混合计算技术和变结构控制的双馈异步电机动态性能改进
Algerian Journal of Signals and Systems Pub Date : 2021-09-30 DOI: 10.51485/AJSS.V6I3.123
Mohamed Yazid Zidani
{"title":"Dynamic Performance Improvement of Doubly Fed Induction Motor Based on Hybrid Computational Technique and Variable Structure Control","authors":"Mohamed Yazid Zidani","doi":"10.51485/AJSS.V6I3.123","DOIUrl":"https://doi.org/10.51485/AJSS.V6I3.123","url":null,"abstract":"The sliding mode control (SMC) methodology based on the theory of variable structure systems has been widely used for robust control of nonlinear systems. Nevertheless, this type of control has an essential inconvenience, which is the chattering phenomenon caused by the discontinuous control part. In order to reduce the effects of the chattering phenomenon, second order sliding mode (SOSM) seems to be a very attractive solution. To eliminate the remains of chattering phenomenon, a new control scheme based on fuzzy second order sliding mode control (FSOSMC) is proposed in this paper. This fuzzy second order sliding mode controller is destined to the speed control of doubly fed induction motor (DFIM) which is based on the decoupling control to enhance robustness under different operating conditions such as load torque and in the presence of parameters variation. \u0000The simulation results for various scenarios show the performances of the proposed control in terms of, precision, rapidity and stability for the high powers DFIM operating at variable speeds.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126537979","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
Covid-19 Images and Video Denoising Algorithms Based on Convolutional Neural Network CNNs 基于卷积神经网络cnn的Covid-19图像和视频去噪算法
Algerian Journal of Signals and Systems Pub Date : 2021-06-30 DOI: 10.51485/AJSS.V6I2.126
Z. Messali, Salsabil Saad Saoud, Amira Lamreche
{"title":"Covid-19 Images and Video Denoising Algorithms Based on Convolutional Neural Network CNNs","authors":"Z. Messali, Salsabil Saad Saoud, Amira Lamreche","doi":"10.51485/AJSS.V6I2.126","DOIUrl":"https://doi.org/10.51485/AJSS.V6I2.126","url":null,"abstract":"In this paper, the most sophisticated denoising algorithms of images and video are applied and implemented. More precisely, we study and implement the video denoising algorithms \"VBM3D\", \"VBM4D\", \"DVDNet\" and \"FastDVDnet\". Much attention is given to the latest DVDNet and FastDVDNet algorithms, which are based on CNN. We carry out a detailed quantitative and qualitative comparative study between the considered algorithms. Two assessments are adapted; the first is a qualitative comparison based on the qualityof the images / videos and the second is quantitative in terms of PSNR and running time criteria. To see the direct impact of our study on the current pandemic, and to show the importance of image and video preprocessing algorithms in the field of medical imaging; we apply the considered denoising algorithms based on CNN on our built COVID- 19 dataset and TEST_PCR videos.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122670601","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: 1
A Review on Solar Radiation Assessment and Forecasting in Algeria (Part 1: Solar Radiation Assessment) 阿尔及利亚太阳辐射评估与预报综述(上:太阳辐射评估)
Algerian Journal of Signals and Systems Pub Date : 2021-06-30 DOI: 10.51485/ajss.v6i2.133
F. Chellali, Kabouche Nourdine, A. Recioui
{"title":"A Review on Solar Radiation Assessment and Forecasting in Algeria (Part 1: Solar Radiation Assessment)","authors":"F. Chellali, Kabouche Nourdine, A. Recioui","doi":"10.51485/ajss.v6i2.133","DOIUrl":"https://doi.org/10.51485/ajss.v6i2.133","url":null,"abstract":"Solar energy takes a prime place in the energetic transition towards renewable energies. Solar radiation data plays a major role in the expansion of this energy. However, the unavailability of these data due to the reduced number of meteorological stations has imposed the use of various solar radiation estimation and prediction models. Moreover, the geostrategic location of Algeria, its enormous area and its huge solar potential places it among the promising solar energy countries. The main objective of this part is to review the studies done upon estimation and assessment of solar radiation for Algerian sites. Different techniques are proposed including semi-empirical models, satellite imaging and solar maps. The study shows that semi-empirical models have been the most widely used due to the unavailability of solar data.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125259463","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
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