Iranian Journal of Electrical and Electronic Engineering最新文献_第8页

An Intelligent Anti-Islanding Scheme for Synchronous-Based Distributed Generation Using Reduced-Noise Morphological Gradient 基于降噪形态学梯度的同步分布式发电智能防孤岛方案

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.524

S. Shadpey, M. Sarlak

{"title":"An Intelligent Anti-Islanding Scheme for Synchronous-Based Distributed Generation Using Reduced-Noise Morphological Gradient","authors":"S. Shadpey, M. Sarlak","doi":"10.22068/IJEEE.16.4.524","DOIUrl":"https://doi.org/10.22068/IJEEE.16.4.524","url":null,"abstract":"This paper presents a pattern recognition-based scheme for detection of islanding conditions in synchronousbased distributed generation (DG) systems. The main idea behind the proposed scheme is the use of spatial features of system parameters such as the frequency, magnitude of positive sequence voltage, etc. In this study, the system parameters sampled at the point of common coupling (PCC) were analyzed using reduced-noise morphological gradient (RNMG) tool, first. Then, the spatial features of the RNMG magnitudes were calculated. Next, to optimize and increase the ability of the proposed scheme for islanding detection, the best features with a much discriminating power were selected based on separability index (SI) calculation. Finally, to distinguish the islanding conditions from the other normal operation conditions, a support vector machine (SVM) classifier was trained based on the selected features. To investigate the power of the proposed scheme for islanding detection, the results of examinations on the various islanding conditions including system loading and grid operating state were presented. These results show that the proposed algorithm reliably detect the islanding condition within 32.7 ms.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"524-535"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44383822","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

Enhancement of Voltage/Frequency Stability in an Autonomous Micro Energy Grid with Penetration of Wind Energy Using a Parallel Fuzzy Mechanism 利用并联模糊机制增强风能渗透自治微电网电压/频率稳定性

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.536

H. Shayeghi, A. Younesi

{"title":"Enhancement of Voltage/Frequency Stability in an Autonomous Micro Energy Grid with Penetration of Wind Energy Using a Parallel Fuzzy Mechanism","authors":"H. Shayeghi, A. Younesi","doi":"10.22068/IJEEE.16.4.536","DOIUrl":"https://doi.org/10.22068/IJEEE.16.4.536","url":null,"abstract":"The main objective of this paper is to model and optimize the parallel and relatively complex FuzzyP+FuzzyI+FuzzyD (FP+FI+FD) controller for simultaneous control of the voltage and frequency of a micro-grid in the islanded mode. The FP+FI+FD controller has three parallel branches, each of which has a specific task. Finally, as its name suggests, the final output of the controller is derived from the algebraic summation of the outputs of these three branches. Combining the basic features of a simple PID controller with fuzzy logic that leads to an adaptive control mechanism, is an inherent characteristic of the FP+FI+FD controller. This paper attempts to determine the optimal control gains and Fuzzy membership functions of the FP+FI+FD controller using an improved Salp swarm algorithm (ISSA) to achieve its optimal dynamic response. The time-domain simulations are carried out in order to prove the superb dynamic response of the proposed FP+FI+FD controller compared to the PID control methods. In addition, a multi-input-multi-output (MIMO) stability analysis is performed to ensure the robust control characteristic of the proposed parallel fuzzy controller.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"536-550"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41953962","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: 2

A Multi-Physics Simulation Model Based on Finite Element Method for the Multi-Layer Switched Reluctance Motor 基于有限元法的多层开关磁阻电机多物理仿真模型

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.494

P. Vahedi, B. Ganji, E. Afjei

{"title":"A Multi-Physics Simulation Model Based on Finite Element Method for the Multi-Layer Switched Reluctance Motor","authors":"P. Vahedi, B. Ganji, E. Afjei","doi":"10.22068/IJEEE.16.4.494","DOIUrl":"https://doi.org/10.22068/IJEEE.16.4.494","url":null,"abstract":"Using ANSYS finite element (FE) package, a multi-physics simulation model based on finite element method (FEM) is introduced for the multi-layer switched reluctance motor (SRM) in present paper. The simulation model is created totally in ANSYS parametric design language (APDL) as a parametric model usable for various conventional types of this motor and it is included electromagnetic, thermal and structural analyses. The static characteristic of flux-linkage with a phase, phase current waveform, instantaneous torque and electromagnetic losses are predicted using the developed electromagnetic model. Carrying out 3D FE thermal analysis, the temperature rise due to the calculated core and copper losses is predicted in the developed thermal model. The transient, modal and harmonic analyses are done in the introduced structural model to determine the mode shapes, natural frequencies, displacement and sound pressure level (SPL) in both time and frequency domains. In order to evaluate the developed simulation model, it is applied to a typical multi-layer SRM and simulation results related to all above-mentioned analyses are presented.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"494-504"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42311220","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 Minimal-Cost Inherent-Feedback Approach for Low-Power MRF-Based Logic Gates 低功耗磁流变逻辑门的最小成本固有反馈方法

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.439

S. M. Razavi

{"title":"A Minimal-Cost Inherent-Feedback Approach for Low-Power MRF-Based Logic Gates","authors":"S. M. Razavi","doi":"10.22068/IJEEE.16.4.439","DOIUrl":"https://doi.org/10.22068/IJEEE.16.4.439","url":null,"abstract":"The Markov random field (MRF) theory has been accepted as a highly effective framework for designing noise-tolerant nanometer digital VLSI circuits. In MRF-based design, proper feedback lines are used to control noise and keep the circuits in their valid states. However, this methodology has encountered two major problems that have limited the application of highly noise immune MRF-based circuits. First, excessive hardware overhead that imposes a great cost, power consumption and propagation delay on the circuits and second, separate implementation of feedback lines that adds further delay to the circuits. In this paper, we propose a novel approach for minimal-cost inherent-feedback implementation of low-power MRF-based logic gates. The simulation results, which are based on 32nm BSIM4 models, demonstrate that besides excellent noise immunity of the proposed method, it has the least propagation delay in comparison with all of the previously reported MRF-based gates due to its inherent feedbacks. In addition, the proposed method outperforms competing ones, which have comparable noise immunity, in other circuit metrics like cost and power consumption. Specifically, the proposed method achieves at least 18%, 29% and 39% reductions in cost, delay and power consumption with considerable noise immunity improvement compared with competing methods.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"439-448"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48501057","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

An Improved Transformerless Grid-Connected PV System With Related Control Strategy to Reduce Leakage Current, Extract Maximum Power Point and Control Power 一种改进的无变压器并网光伏系统及其控制策略以降低漏电流、提取最大功率点和控制功率

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.513

T. Ahmadzadeh, E. Babaei, M. Sabahi, T. Abedinzadeh

{"title":"An Improved Transformerless Grid-Connected PV System With Related Control Strategy to Reduce Leakage Current, Extract Maximum Power Point and Control Power","authors":"T. Ahmadzadeh, E. Babaei, M. Sabahi, T. Abedinzadeh","doi":"10.22068/IJEEE.16.4.513","DOIUrl":"https://doi.org/10.22068/IJEEE.16.4.513","url":null,"abstract":"The main purposes of a transformerless grid-connected photovoltaic (PV) system consist of the reduction of leakage current, extraction of maximum power point (MPP), tracking of MPP (MPPT), controlling the active and reactive powers, and having the unity power factor. To achieve the above-mentioned aims, the following actions have been performed in this paper. First of all, a brief analysis of the transformerless PV system has been done by using the conventional full-bridge (FB) topologies with two bipolar and unipolar PWM techniques. Then, an effective solution has been also introduced to significantly reduce the leakage current in the conventional H5 FB topology. Moreover, a proper control method has been proposed by using the combination of the fractional opencircuit voltage (FOCV) and the model predictive control (MPC) strategies to extract the MPP from PV panels, control the injection of the reactive power to the gird and have the unity power factor. At last, the simulation results performed in PSCAD software will be used to prove the correct performance of the proposed control method in the improved H5 FB topology.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"513-523"},"PeriodicalIF":0.0,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47542940","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

Detection of Copy-Move Forgery in Digital Images Using Scale Invariant Feature Transform Algorithm and the Spearman Relationship 基于比例不变特征变换算法和Spearman关系的数字图像复制-移动伪造检测

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-12-10 DOI: 10.22068/IJEEE.16.4.474

A. Fattahi, S. Emadi

引用次数: 1

Online Voltage Stability Monitoring and Prediction by Using Support Vector Machine Considering Overcurrent Protection for Transmission Lines 考虑过流保护的支持向量机在线电压稳定监测与预测

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-09-10 DOI: 10.22068/IJEEE.16.3.325

A. Poursaeed, F. Namdari

{"title":"Online Voltage Stability Monitoring and Prediction by Using Support Vector Machine Considering Overcurrent Protection for Transmission Lines","authors":"A. Poursaeed, F. Namdari","doi":"10.22068/IJEEE.16.3.325","DOIUrl":"https://doi.org/10.22068/IJEEE.16.3.325","url":null,"abstract":"In this paper, a novel method is proposed to monitor the power system voltage stability using Support Vector Machine (SVM) by implementing real-time data received from the Wide Area Measurement System (WAMS). In this study, the effects of the protection schemes on the voltage magnitude of the buses are considered while they have not been investigated in previous researches. Considering overcurrent protection for transmission lines not only resolves some drawbacks of the previous studies but also brings the case study system closer to the realities of actual systems. Online monitoring of system stability is performed by prediction of the Voltage Stability Index (VSI) and carried out by using Support Vector Regression (SVR). Due to the direct effect of appropriate SVR parameters on the prediction quality, the optimum value is chosen for learning machine hyperparameters using Differential Evolution (DE) algorithm. The obtained simulation results demonstrate high accuracy, effectiveness, and optimal performance of the proposed technique in comparison with Back-Propagation Neural Network (BPNN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) approaches. The presented method is carried out on the 39 bus New England system.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"325-335"},"PeriodicalIF":0.0,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43745130","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

An Effective Attack-Resilient Kalman Filter-Based Approach for Dynamic State Estimation of Synchronous Machine 基于攻击弹性卡尔曼滤波的同步电机动态估计方法

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-09-10 DOI: 10.22068/IJEEE.16.3.279

Z. Kazemi, A. Safavi

引用次数: 2

Improvement of Transient Voltage Profile Using Power Control of the DFIG-Based Wind Farm Under Severe Voltage Dip Event 基于DFIG的风电场在严重电压骤降事件下利用功率控制改善瞬态电压分布

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-09-10 DOI: 10.22068/IJEEE.16.3.313

Z. Rafiee, Mansour Rafiee, M. Aghamohammadi

{"title":"Improvement of Transient Voltage Profile Using Power Control of the DFIG-Based Wind Farm Under Severe Voltage Dip Event","authors":"Z. Rafiee, Mansour Rafiee, M. Aghamohammadi","doi":"10.22068/IJEEE.16.3.313","DOIUrl":"https://doi.org/10.22068/IJEEE.16.3.313","url":null,"abstract":"Improving transient voltage stability is one of the most important issues that must be provided by doubly fed induction generator (DFIG)-based wind farms (WFs) according to the grid code requirement. This paper proposes adjusted DC-link chopper based passive voltage compensator and modified transient voltage controller (MTVC) based active voltage compensator for improving transient voltage stability. MTVC is a controller-based approach, in which by following a voltage dip (VD) condition, the voltage stability for the WF can be improved. In this approach, a voltage dip index (VDI) is proposed to activate/deactivate the control strategy, in which, two threshold values are used. In the active mode, the active and reactive power are changed to decrease the rotor current and boost the PCC voltage, respectively. Based on the control strategy, in a faulty grid, DFIG not only will be able to smooth DC-link voltage fluctuations and reduces rotor overcurrents but also it will increase the voltage of point of common coupling (PCC). Therefore, it improves transient voltage stability. The simulation results show the effectiveness of the proposed strategy for improving voltage stability in the DFIG.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"313-324"},"PeriodicalIF":0.0,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44377187","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

Error Modeling in Distribution Network State Estimation Using RBF-Based Artificial Neural Network 基于RBF神经网络的配电网状态估计误差建模

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2020-09-10 DOI: 10.22068/IJEEE.16.3.292

A. H. Marzouni, A. Zakariazadeh

{"title":"Error Modeling in Distribution Network State Estimation Using RBF-Based Artificial Neural Network","authors":"A. H. Marzouni, A. Zakariazadeh","doi":"10.22068/IJEEE.16.3.292","DOIUrl":"https://doi.org/10.22068/IJEEE.16.3.292","url":null,"abstract":"State estimation is essential to access observable network models for online monitoring and analyzing of power systems. Due to the integration of distributed energy resources and new technologies, state estimation in distribution systems would be necessary. However, accurate input data are essential for an accurate estimation along with knowledge on the possible correlation between the real and pseudo measurements data. This study presents a new approach to model errors for the distribution system state estimation purpose. In this paper, pseudo measurements are generated using a couple of real measurements data by means of the artificial neural network method. In the proposed method, the radial basis function network with the Gaussian kernel is also implemented to decompose pseudo measurements into several components. The robustness of the proposed error modeling method is assessed on IEEE 123-bus distribution test system where the problem is optimized by the imperialist competitive algorithm. The results evidence that the proposed method causes to increase in detachment accuracy of error components which results in presenting higher quality output in the distribution state estimation.","PeriodicalId":39055,"journal":{"name":"Iranian Journal of Electrical and Electronic Engineering","volume":"16 1","pages":"292-301"},"PeriodicalIF":0.0,"publicationDate":"2020-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42668657","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