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2020 7th International Forum on Electrical Engineering and Automation (IFEEA)最新文献

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Fault Location Method Of Single-phase To Earth Fault In Distribution Network Based On The Variance Of Three-phase Asymmetrical Current Fault Component 基于三相不对称电流故障分量方差的配电网单相接地故障定位方法
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00071
Qi Zheng, Zhao Xinyi, Bilal Matloob
{"title":"Fault Location Method Of Single-phase To Earth Fault In Distribution Network Based On The Variance Of Three-phase Asymmetrical Current Fault Component","authors":"Qi Zheng, Zhao Xinyi, Bilal Matloob","doi":"10.1109/IFEEA51475.2020.00071","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00071","url":null,"abstract":"When single-phase earth fault occurs in the distribution network, the three-phase fault path current is different from the non-fault path current that can be used for line selection. However, the fault component signal of the three-phase current is not obvious, because the three-phase load current is far greater than the fault component current that will lead to the failure of the method for detection of earth fault. Improved fault location method based on the three-phase line current is proposed in this paper. The faulty component of the three-phase current is obtained by subtracting the value of phase current before failure from the value of current that appears after failure, and then the zero sequence line current is subtracted from the faulty component of each line to enhance the difference of line currents. The variance of the fundamental wave amplitude of the three-phase difference result is calculated, so that the fault characteristics of the faulted path are significantly different from the healthy path. Finally, the fault location is detected by comparing the results of different lines. In this paper, the specific fault location process and criteria are given, and the reliability of the method is verified by simulation experiment and actual data.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134233134","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
Review on Mechanisms with Clearances and Its Future Application in the Internal Combustion Engine 间隙机构及其在内燃机中的应用综述
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00043
Yanyan Zhang, Dehui Tong, Nannan Sun, Xiangning Du, Zhen-tao Liu
{"title":"Review on Mechanisms with Clearances and Its Future Application in the Internal Combustion Engine","authors":"Yanyan Zhang, Dehui Tong, Nannan Sun, Xiangning Du, Zhen-tao Liu","doi":"10.1109/IFEEA51475.2020.00043","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00043","url":null,"abstract":"Internal combustion engine (ICE) is a widely used motive power machine with complicated structures, and the working conditions of its components and parts are harsh due to the periodic explosive pressure. while guaranteeing the normal operation of the whole mechanism, the clearances will lead to contact, friction, and even collision between the kinematic pair elements, which further impact the stability and reliability of the ICE operation. The dynamics theory and experimental research status of mechanisms with clearances as well as some latest applications of the dynamics theory in mechanisms with clearances in the ICE field were reviewed in this study, mainly from two aspects: the dynamic theory models (the clearance model, the normal contact force models and the tangential frictional force models) for mechanisms with clearances and experimental research. At last, the follow-up developments of the dynamics theory of mechanisms with clearances and the possible difficulties to be encountered in the ICE field in the future were summarized and expected.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134542127","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
Numerical Study of a Low Speed Wind Tunnel's Aerodynamic Performance and Its Optimization Design 低速风洞气动性能数值研究及优化设计
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00111
B. Bai, Z. Gu, Yi Zhang, Haiyang Zhan, Liming Zhang, Xuezhang Wang
{"title":"Numerical Study of a Low Speed Wind Tunnel's Aerodynamic Performance and Its Optimization Design","authors":"B. Bai, Z. Gu, Yi Zhang, Haiyang Zhan, Liming Zhang, Xuezhang Wang","doi":"10.1109/IFEEA51475.2020.00111","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00111","url":null,"abstract":"Empirical formula and numerical study were used to predict the aerodynamic performance of a low speed circulating wind tunnel. The positions where the flow loss concentrated were the corners of the tunnel. The optimization design was carried out by using corner vanes. The results of empirical formula and numerical study of the optimized wind tunnel were agreed, which showed that the aerodynamic loss was obviously reduced by setting corner vanes.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"330 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134298751","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
Analysis of Multi-dimensional factors sensitive to comprehensive utilization of power distribution equipment 配电设备综合利用的多维敏感因素分析
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00098
Shuo Liang, Yangjun Zhou, Xiao Yong Yu
{"title":"Analysis of Multi-dimensional factors sensitive to comprehensive utilization of power distribution equipment","authors":"Shuo Liang, Yangjun Zhou, Xiao Yong Yu","doi":"10.1109/IFEEA51475.2020.00098","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00098","url":null,"abstract":"Considering the contradiction between high loading and long life, and the diversity of influencing factors, the decision making of improving utilization of distribution equipment is a complicated non-mechanism modeling problem. To make the measures on utilization improvement of distribution equipment more effectively and efficiently, a data-based analysis method of multi-dimensional factors sensitive to comprehensive utilization is proposed. Firstly, a multi-dimensional grid-load-management index system of influencing factors is constructed. Secondly, based on the concepts of capacity factor and lifecycle management, the comprehensive utilization index considering utilization of in-service equipment and retired equipment in a certain assessing period is defined, and calculated by entropy weight method. And then multiple linear regression algorithm is used to analyze the sensitivity of various influencing factors, and then conducts multilevel benchmarking evaluation is performed to screen the key influencing factors. The feasibility of the proposed method is verified by actual system case, which provides technical support for precise strategy making of comprehensive utilization improvement for distribution system.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132556146","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
The Development and Application of Semiconductor Materials 半导体材料的发展与应用
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00039
Junfeng Wu
{"title":"The Development and Application of Semiconductor Materials","authors":"Junfeng Wu","doi":"10.1109/ifeea51475.2020.00039","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00039","url":null,"abstract":"As the development of nowadays technology, semiconductor material has been taking an indispensable part in various aspects of our life. This paper is intended to talk about the development and application of semiconductor material of three generations, which includes the first-generation semiconductor Si applied in PN junction, the second-generation GaAs in MESFET and modulation doping, and the third-generation GaN applied in advanced charger. The third-generation semiconductor material GaN has an advantage over Si in terms of its physical properties, direct bandgap and wide bandgap characteristics. But GaN still has several limitations nowadays on stability, cost and manufacture. The development of the newly-formed generation of semiconductor remains to be seen.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133374333","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 New Kind of Antenna Used in Remote Aera With Proper Electrical Properties 一种具有良好电性能的远程天线
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00031
Yong Cai, Chang Zhou, Jing Xia, Nan Wang
{"title":"A New Kind of Antenna Used in Remote Aera With Proper Electrical Properties","authors":"Yong Cai, Chang Zhou, Jing Xia, Nan Wang","doi":"10.1109/ifeea51475.2020.00031","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00031","url":null,"abstract":"A new kind of conformal antenna for 5G communication in remote areas is presented in this study. The optimizing parameters of the antenna are theoretically derived and the results are discussed through the simulation. The conformal antenna could achieve 100% relative impedance bandwidth and peak gain>4dBi at 5GHz. More importantly, the far-field patterns of the conformal antenna in some vertical planes have a wide beam width which could make it easy for the antenna to receive signals from all directions by adjusting the antenna orientation. The conformal antenna has shown great practical value in 5G communication.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133929619","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
Research on the quality of high frequency communication printed circuit board micro-holes based on printed circuit board microsections method 基于印刷电路板显微切片法的高频通信印刷电路板微孔质量研究
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00119
Tao Sha, Gao Zhisen, S. Hongyan
{"title":"Research on the quality of high frequency communication printed circuit board micro-holes based on printed circuit board microsections method","authors":"Tao Sha, Gao Zhisen, S. Hongyan","doi":"10.1109/IFEEA51475.2020.00119","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00119","url":null,"abstract":"With the rapid development of 5G communication technology, it has directly led to the widespread application of the high frequency communication printed circuit boards (PCB). The characteristics of high frequency communication PCBs lead to higher challenges in PCB processing technology, the quality of micro-holes is one of the important standards that affect the quality of high frequency PCBs signal transmission. In this paper, Arlon AD300 high frequency PCB is selected for the micro-holes drilling experiment, and the microsections method is used to observe the morphology of the burrs in the micro-holes. The experimental analysis shows that the quality of the high frequency PCB micro-holes will be affected by the spiral angle parameters of the micro drills used in processing. It has important practical value for ensuring the quality of high frequency PCB micro-holes.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133437550","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
Research on the Layout of Rectangular Parts Based on Genetic Algorithm 基于遗传算法的矩形零件排样研究
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00180
Junhao Huang, Zhen Wang, Jiefeng Liu, Tianchi Liao
{"title":"Research on the Layout of Rectangular Parts Based on Genetic Algorithm","authors":"Junhao Huang, Zhen Wang, Jiefeng Liu, Tianchi Liao","doi":"10.1109/IFEEA51475.2020.00180","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00180","url":null,"abstract":"The layout of rectangular parts is a widespread problem in the modern industrial production process. Improving the layout algorithm and proposing a more excellent layout algorithm will bring huge commercial value. Aiming at various types of rectangular parts layout problems, an intelligent rectangular part layout algorithm based on genetic algorithm is proposed. The algorithm adopts the strategy of remaining rectangles, improves the selection and arrangement of small rectangles, and designs a more excellent layout fitness function. In the actual layout problem, the algorithm has achieved good results.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121439747","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
Impact Damage Characteristics of Steam Turbine Bearings 汽轮机轴承冲击损伤特性研究
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00056
Lao Xingsheng, L. Yong, Wu Jun
{"title":"Impact Damage Characteristics of Steam Turbine Bearings","authors":"Lao Xingsheng, L. Yong, Wu Jun","doi":"10.1109/ifeea51475.2020.00056","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00056","url":null,"abstract":"In order to provide accurate input conditions for the design and installation process of steam turbine bearings system, finite element model of the simulation test bed shafting system was established. The design acceleration, 50% design acceleration and 1.5 times design acceleration were used as input loads to calculate the impact stress distribution of the steam turbine bearing. Cloud map and shock stress response history curve are calculated. The results show that the cyclic alternating stress in the alloy layer in the bearing area of the sliding bearing is the main cause of the failure of the sliding bearing. Under the design acceleration and 50% design acceleration shock conditions, the damage characteristics of the bearing are the bearing wear and the plasticity of the bearing inner wall. Under the 1.5 times design acceleration impact condition, the damage characteristics of the bearing are bush wear and plastic deformation of the pin hole.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"6 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115928058","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
Loop Open-Closed Detection Based on Magnetic Resonance Frequency Splitting 基于磁共振分频的环开闭检测
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00016
Y. A, Qinfeng Liu, Lin Chen, Huaiqing Zhang
{"title":"Loop Open-Closed Detection Based on Magnetic Resonance Frequency Splitting","authors":"Y. A, Qinfeng Liu, Lin Chen, Huaiqing Zhang","doi":"10.1109/IFEEA51475.2020.00016","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00016","url":null,"abstract":"On account of the resonant frequency difference of the open and closed loop, as well as the frequency selection characteristic of the magnetic coupling resonant (MCR) system, this paper presents a loop open-closed detection method based on frequency splitting, which introduces the MCR technology from energy transfer to the information detection. The simulation is carried out through the finite element simulation software HFSS and the simulation results indicate that it is feasible for the proposed method to realize the loop open-closed detection, which is verified by the experiment. The experiment results are in good agreement with the theoretical and simulation analysis.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"509 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115890120","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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