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2015 23rd Iranian Conference on Electrical Engineering最新文献

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Synchrophasor-assisted line outage identification: A simple and iterative algorithm 同步相量辅助线路中断识别:一种简单迭代算法
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146467
J. Zare, F. Aminifar
{"title":"Synchrophasor-assisted line outage identification: A simple and iterative algorithm","authors":"J. Zare, F. Aminifar","doi":"10.1109/IRANIANCEE.2015.7146467","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146467","url":null,"abstract":"This paper proposes a new iterative algorithm for detection of outage of two- and three-terminal lines in a wide-area power network. The proposed methodology uses the combination of pre- and post-event information captured by phasor measurement units (PMUs) dispersed over the network. First, to limit the event search space and reduce the execution time of the proposed iterative algorithm, a set of suspicious lines are determined through the comparison of variations of voltage phase angle of buses equipped with PMUs. Then, each suspicious line is assumed to be on outage the current phasor of its' one (or both) end(s) is estimated. If the estimated current is approximately zero, the associated transmission line is on outage in reality and the screening process terminates; otherwise, the process continues by examining the next suspicious line. In a power system with the minimum number of PMUs ensuring network complete observability, the proposed iterative algorithm can identify outage of all transmission lines. The reliability of the proposed algorithm is verified by simulations on IEEE 14-bus test system. The effects of system stressed conditions (generator outage, power swing, and load encroachment) on the performance of the proposed method are evaluated as well.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129467647","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
Optimal distribution of electric vehicle types for minimizing total CO2 emissions 以减少总二氧化碳排放为目标的电动汽车类型优化分配
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146472
M. Barazesh, J. Saebi, D. B. M. Hossein Javidi
{"title":"Optimal distribution of electric vehicle types for minimizing total CO2 emissions","authors":"M. Barazesh, J. Saebi, D. B. M. Hossein Javidi","doi":"10.1109/IRANIANCEE.2015.7146472","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146472","url":null,"abstract":"With the rapid growth of electric vehicles, power systems would face serious difficulties to supply the excessive electricity demand in the near future. In this paper, a planning method is introduced to prevent the environmental and technical issues that the introduction of electric vehicles may cause for nonsmart electricity grids. The idea of this method is to employ the differences between EV types in order to achieve the minimum total emission which is the sum of vehicles emission and power system emission. The proposed method considers the importance of decreasing urban area emission and determines the optimal number of every EV type. The IEEE RTS 24 system, and real world vehicle specifications is used to demonstrate the capability of the proposed method. Results suggest that for low daily trip distances, the best option depends on the priority of urban area emission reduction. On the other hand, for higher distances, the plug-in types would lead to lower total emissions.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129749427","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
Dynamic impairment-aware provisioning based on quadratic model in all optical networks 全光网络中基于二次模型的动态损伤感知配置
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146208
Amin Ebrahimzadeh, A. Rahbar, B. Alizadeh
{"title":"Dynamic impairment-aware provisioning based on quadratic model in all optical networks","authors":"Amin Ebrahimzadeh, A. Rahbar, B. Alizadeh","doi":"10.1109/IRANIANCEE.2015.7146208","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146208","url":null,"abstract":"Routing and Wavelength Assignment (RWA) is the most concern in wavelength routed all optical networks. This paper proposes a dynamic impairment aware RWA scheme inspired by the idea of binary quadratic programming formulation for the static RWA problem. In this method, links wavelength occupancy information is collected to be used, in order to establish the upcoming calls via adaptive routing technique. Calculated light-paths' quality are estimated before establishing based on the developed model for some linear physical layer impairments. Performance evaluation results confirm that the proposed impairment aware quadratic programming based RWA (IAQP-RWA) is capable of reducing the blocking rate. Besides, average network throughput in addition to average channel utilization is increased as well. Moreover, proposed algorithm is able to balance the load in the network more successfully, compared to existing shortest path RWA (SP-RWA) and minimum hop RWA (MH-RWA) solutions.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131031370","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
A new symmetry measure based on Gabor filters 一种新的基于Gabor滤波器的对称测度
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146305
F. Shaker, A. Monadjemi
{"title":"A new symmetry measure based on Gabor filters","authors":"F. Shaker, A. Monadjemi","doi":"10.1109/IRANIANCEE.2015.7146305","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146305","url":null,"abstract":"Symmetry is one of the important factors affecting aesthetic quality of an artwork. In paintings symmetry is understood as balanced arrangement of objects rather than a perfect mirrored symmetry. Computational aesthetic which was first introduced by Birkhof involves assigning values to each component of aesthetic measure. Processing power of today's computers as well as image processing tools has paved the way for automatic and objective evaluation of paintings. In this research, Gabor filters are used to devise a new symmetry measure appropriate for computational evaluation of paintings. This symmetry measure is computed for various images from synthetic and natural images to images of miniature paintings. Comparing this measure and two previously used measures against the subjective measure of symmetry confirms the effectiveness of our proposed measure. The results show a good correlation between the perceived symmetry of a painting and its computed symmetry measure.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126565826","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
Recognizing objectionable pictures using sparse coding 使用稀疏编码识别不良图片
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146296
R. Moradi, Rahman Yousefzadeh
{"title":"Recognizing objectionable pictures using sparse coding","authors":"R. Moradi, Rahman Yousefzadeh","doi":"10.1109/IRANIANCEE.2015.7146296","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146296","url":null,"abstract":"In recent years different methods for detecting objectionable images have proposed. Generally these methods are based on skin color detection and extracting features from human body. In this paper a variant of SPM method is proposed in order to discriminate normal images from objectionable ones. In this method first SIFT features are extracted. Next features are learned by sparse coding the features of previous step. Finally classes are separated by a linear SVM. This approach remarkably improves the scalability of the training phase. The proposed system is tested on 80,000 images and experiments indicate that it outperforms other methods including methods based on histogram features and nonlinear classifiers.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125838659","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
Active learning using a low-rank classifier 使用低秩分类器的主动学习
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146279
M. Babaee, Stefanos Tsoukalas, M. Babaee, M. Datcu
{"title":"Active learning using a low-rank classifier","authors":"M. Babaee, Stefanos Tsoukalas, M. Babaee, M. Datcu","doi":"10.1109/IRANIANCEE.2015.7146279","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146279","url":null,"abstract":"The majority of learning algorithms work based on a training dataset. However, labeling the collected data is costly and time consuming. Active learning has gained high attention due to its ability to label a vast amount of unlabeled collected data. However, the performance of the current state-of-the-art methods declines when the number of training data is increasing. In this paper, we propose and study a variant of Support Vector Machine (SVM), namely low-rank classifier, which is regularized by the trace-norm of learning parameters in active learning scenario. We compare this algorithm with the standard SVM algorithms in depth and analyze its computational complexity and optimization solution. Our experimental results confirm, that the proposed method outperforms the other methods for an increasing amount of training data.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127574301","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
A bandwidth-aware algorithm for solving topology mismatch problem in peer-to-peer networks utilizing the combination of learning automata and X-BOT algorithm 基于学习自动机和X-BOT算法的点对点网络拓扑失配带宽感知算法
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146287
M. H. Dolabi, M. Meybodi, A. Saghiri
{"title":"A bandwidth-aware algorithm for solving topology mismatch problem in peer-to-peer networks utilizing the combination of learning automata and X-BOT algorithm","authors":"M. H. Dolabi, M. Meybodi, A. Saghiri","doi":"10.1109/IRANIANCEE.2015.7146287","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146287","url":null,"abstract":"Peer-to-peer networks construct an overlay network above underlying networks. These networks are classified as structured and unstructured networks. Unstructured overlay networks are characterized by a relaxed topology where neighboring associations are random in nature and oblivious to the properties of the underlying network which leads to topology mismatch. This usually results in the overlay networks owing several sub-optimal links leading to latency, redundant traffic, wasting bandwidth and finally degrading the performance of the network. So designing an appropriate algorithm for topology adapting can considerably affect the efficiency as much as performance. In this paper, an adaptive and smart algorithm for solving topology mismatch will be proposed by considering the bandwidth of each peer and combining learning automata and X-BOT algorithm. In proposed algorithm, neighboring association constitutes based on bandwidth and by utilizing the information provided by learning automata. The information about peer's bandwidth is kept in its local table used periodically for making decision about appropriate links. Simulations has demonstrated that the proposed algorithm would improve the efficiency through decreasing end to end latency, traffic and appropriate use of bandwidth.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127722306","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
Ultra low-power 7T SRAM cell design based on CMOS 基于CMOS的超低功耗7T SRAM单元设计
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146428
Majid Moghaddam, M. H. Moaiyeri, M. Eshghi
{"title":"Ultra low-power 7T SRAM cell design based on CMOS","authors":"Majid Moghaddam, M. H. Moaiyeri, M. Eshghi","doi":"10.1109/IRANIANCEE.2015.7146428","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146428","url":null,"abstract":"In his paper a 7T SRAM cell operating well in low voltages is presented. Suitable read operation structure is provided by controlling the drain induced barrier lowering (DIBL) effect and body-source voltage in the hold `1' state. The read-operation structure of the proposed cell utilizes the single transistor which leads to a larger write margin. The simulation results at 90nm TSMC CMOS demonstrate the outperforms of the proposed SRAM cell in terms of power dissipation, write margin, sensitivity to process variations as compared with the other most efficient low-voltage SRAM cells.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122206895","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: 12
Coordinated design of UPFC damping controller and CPSS using group search optimization algorithm 采用群搜索优化算法的UPFC阻尼控制器与CPSS协调设计
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146448
M. T. Hagh, P. Aliasghari, J. Morsali
{"title":"Coordinated design of UPFC damping controller and CPSS using group search optimization algorithm","authors":"M. T. Hagh, P. Aliasghari, J. Morsali","doi":"10.1109/IRANIANCEE.2015.7146448","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146448","url":null,"abstract":"In this paper, a new optimization algorithm is presented for coordinated design of a conventional power system stabilizer (CPSS) and a unified power flow controller (UPFC) that are connected to a single-machine infinite-bus (SMIB) power system. First, this coordinated design problem is converted into an optimization problem. Then, the group search optimization (GSO) algorithm is used to solve it. The proposed algorithm is tested under various operating conditions and its effectiveness is proved by simulation results.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"53 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120944419","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
Power management strategy for hybrid vehicle using a three-port bidirectional DC-DC converter 基于三端口双向DC-DC转换器的混合动力汽车电源管理策略
2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146457
A. Hatami, M. Tousi, P. Bayat, P. Bayat
{"title":"Power management strategy for hybrid vehicle using a three-port bidirectional DC-DC converter","authors":"A. Hatami, M. Tousi, P. Bayat, P. Bayat","doi":"10.1109/IRANIANCEE.2015.7146457","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146457","url":null,"abstract":"The electric energy storage system (ESS) used for electric vehicles (EVs) or hybrid electric vehicles (HEVs) usually is a battery. The development of practical EVs and HEVs has been limited by the costs and effectiveness of ESS. Several problems with batteries include overheating, low energy storage capacity, low charging and recharging efficiencies, as well as life time. Installing a super-capacitor (SCs) as a second power source to solve some of the battery problems and to improve the performance of electric vehicles is a feasible and perfect solution. In this paper, a model of hybrid energy storage for electric vehicle with a battery, a SCs and a three port bidirectional converter was designed. To have smaller current ripple for the battery and SC which results in improved electric mode efficiency in hybrid vehicle and to achieve more control flexibility three-port bidirectional converter with novel control strategy, used for manage energy between battery and SCs. The results show that the proposed hybrid energy storage system, improves the working conditions of the battery, furthermore the peak and average current of the battery is reduced due to the working of the SCs, which provided better working conditions for the battery and increased the operating life of the battery. For this purpose, simulations were made in MATLAM/SIMULINK environment.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122883964","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: 13
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