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2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)最新文献

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An accelerating technique by same meshes in FEM 有限元中的同网格加速技术
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456714
Chun Wang, Bo Xiong, Ming Zhang
{"title":"An accelerating technique by same meshes in FEM","authors":"Chun Wang, Bo Xiong, Ming Zhang","doi":"10.1109/GEMCCON50979.2020.9456714","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456714","url":null,"abstract":"An accelerating technique by same meshes in finite element method(FEM) is introduced. By the characteristic of base function depending on geometric form the computing quantities of base function and coefficients matrix are reduced by constructing the same meshes. And farther coefficients matrix of fem quick filling is realized and the quick solving of aim problem is achieved as well. The algorithm is demonstrated by eigen modes solving of the rectangle filling waveguide. The novel method can be extended to the fem solving of other problems.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124782052","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 the Influence of Different Interferences on Global Position System Positioning Accuracy 不同干扰对全球定位系统定位精度的影响分析
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456724
Shang-bo Zhou, Y. Wen, Jinbao Zhang, Guodong Wang
{"title":"Analysis of the Influence of Different Interferences on Global Position System Positioning Accuracy","authors":"Shang-bo Zhou, Y. Wen, Jinbao Zhang, Guodong Wang","doi":"10.1109/GEMCCON50979.2020.9456724","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456724","url":null,"abstract":"GPS (global position system) are widely used in various industries, and navigation and positioning will also be used in railway transportation and other industries. Therefore, electromagnetic sensitivity research is important to the safety of the system. This study analyses the carrier-to-noise ratio of the receiver under different interferences, and analyzed the relationship between the carrier-to-noise ratio and the variance of pseudo-range. The pseudo-range point positioning model was established through MATLAB, and Monte Carlo simulation was performed to obtain the positioning deviation under different interferences. The results show that the equivalent carrier-to-noise ratio of the receiver decreases and the variance of pseudo range becomes larger, as the interference power continues to increase. Among the three types of interference, narrowband interference has a greater impact than the other two types of interference.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124234176","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
On the radar performance influence by stray interference 杂散干扰对雷达性能的影响
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456741
Chun Wang, Bo Xiong, Ming Zhang
{"title":"On the radar performance influence by stray interference","authors":"Chun Wang, Bo Xiong, Ming Zhang","doi":"10.1109/GEMCCON50979.2020.9456741","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456741","url":null,"abstract":"The simulation method of the stray interference with radar performance is constructed based on the radar signal process. According to the method radar performance reduction by the stray interference is analyzed quantitatively. The results show that stray interference decay sharply in the bandwidth of receiving radar with the frequency and change very little with the stray bandwidth and other parameters.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116940364","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 Spectrum Allocation Algorithm Based on Proportional Fairness 基于比例公平的频谱分配算法
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456702
Mengxue Li
{"title":"A Spectrum Allocation Algorithm Based on Proportional Fairness","authors":"Mengxue Li","doi":"10.1109/GEMCCON50979.2020.9456702","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456702","url":null,"abstract":"There is an increasing shortage of electromagnetic spectrum resources. For areas where a large number of electronic devices are distributed, the allocation of spectrum resources among electronic devices is the key issue. Aiming at the problem of spectrum resource allocation between electronic devices, this paper proposes a spectrum allocation algorithm based on the idea of proportional equity algorithm. The algorithm comprehensively considers the interference between the working frequency points of each device, electromagnetic environment constraints, device priority weight values, and the number of frequency points required by each device. Through the dynamic adjustment of the device allocation weight value during the allocation process, and constantly weighing the impact of the interference value of the current allocated frequency point, the algorithm proposed in this paper has become a fairer spectrum allocation algorithm. Simulation results show that the algorithm can effectively improve the fairness of spectrum allocation, and enhance the flexibility of the device to use the electromagnetic spectrum.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129504380","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: 4
A Wireless Synchronization Locating Method for Partial Discharge in Switchgear 开关柜局部放电的无线同步定位方法
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456731
Hangwei Zhang, Yuan Yan, Penglei Xu, Xiaolong Xu, Yuxin Lu, Saike Yang
{"title":"A Wireless Synchronization Locating Method for Partial Discharge in Switchgear","authors":"Hangwei Zhang, Yuan Yan, Penglei Xu, Xiaolong Xu, Yuxin Lu, Saike Yang","doi":"10.1109/GEMCCON50979.2020.9456731","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456731","url":null,"abstract":"Aiming at the problem of low efficiency and poor performance in partial discharge locating for a row of switchgears, this paper proposes a locating method based on wireless synchronization technology. By placing TEV monitoring devices on multi-switchgear data of partial discharge could be get, then wireless network is used to synchronize the data of multiple sensors, after that the partial discharge signals of multi-switchgear at the same time could be get and their amplitude could be used for comparison, finally the purpose of “locating to single switchgear” could be achieved. Through hardware design and synchronization logic locating is realized. Then the locating effect of this method is researched by placing artificial defect on different place in switchgears and verify locating results, so that the accuracy and effectiveness of this method could be proved.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129429159","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
Simulation and testing study of transient responses of lossy nonuniform transmission lines excited by electromagnetic pulse field 电磁脉冲场激励下损耗非均匀传输线瞬态响应的仿真与测试研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456710
Qingxi Yang, Zhaolong Xuan, Tianpeng Li, Kai Yao, Min Zhao, Yan Zhang
{"title":"Simulation and testing study of transient responses of lossy nonuniform transmission lines excited by electromagnetic pulse field","authors":"Qingxi Yang, Zhaolong Xuan, Tianpeng Li, Kai Yao, Min Zhao, Yan Zhang","doi":"10.1109/GEMCCON50979.2020.9456710","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456710","url":null,"abstract":"To obtain actual responses of nonlinear terminations for lossy nonuniform transmission lines excited by external electromagnetic field, the equivalent circuits for lossy nonuniform transmission lines excited by electromagnetic pulse field is built. The radiation experiment platform of lossy nonuniform microstrip lines is built with a pulser injected into the GTEM cell. The simulation and experiment results are highly agreed when the terminations are resistances. However, because the SPICE model of transient voltage suppressor has some discrepancies with actual function, the response current peaks has some differences between simulation and experiment results, although they are all bellow the results without transient voltage suppressor.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"6 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122702084","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
The Study on the Effect of HEMP on Ship System Based on CST 基于CST的HEMP对舰船系统的影响研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456676
De-chang Ren, Jun Guo, Yan-zhao Xie, Si-Min Chen
{"title":"The Study on the Effect of HEMP on Ship System Based on CST","authors":"De-chang Ren, Jun Guo, Yan-zhao Xie, Si-Min Chen","doi":"10.1109/GEMCCON50979.2020.9456676","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456676","url":null,"abstract":"Aiming at the complex electromagnetic pulse response problems faced by the ship system, the research focuses on the coupling response of cables and typical antennas in the ship system under high altitude electromagnetic pulse (HEMP). Using the Computer Simulation Technology(CST) cable studio and microwave studio, combined with engineering practice, a three-dimensional parametric simulation model of the multi-cable coupling of the ship system is established to study single-core cables and coaxial cables with shielding layers, typical shipborne antennas' coupling response under HEMP. The research results can guide the protection design of the ship system against the complex electromagnetic environment.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"77 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128080319","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
Study on Shielding Effectiveness of Metal Shielding Mesh of Cable Joint 电缆接头金属屏蔽网屏蔽效果的研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456730
Penglei Xu, Y. Di, Xintong Yao, Saike Yang
{"title":"Study on Shielding Effectiveness of Metal Shielding Mesh of Cable Joint","authors":"Penglei Xu, Y. Di, Xintong Yao, Saike Yang","doi":"10.1109/GEMCCON50979.2020.9456730","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456730","url":null,"abstract":"The metallic wire mesh is widely used in electromagnetic shielding engineering due to its obvious advantages such as light weight, high flexibility and low cost. The power cable joint uses metal mesh to restore the metal shielding layer. This paper studies the shielding effectiveness (SE) of metal mesh used for cable joint. Compare and analyze the shielding effectiveness of joint copper mesh and the effect of different specifications and double-layer copper mesh on the shielding effectiveness in terms of theoretical calculation and simulation. The results show that the shielding effectiveness of copper mesh varies with frequency; comparing different specifications of copper mesh, the shielding effectiveness of dense mesh is higher than that of sparse mesh; the shielding effectiveness of double-layer wire mesh is higher than that of single-layer wire mesh with the same specification when the distance between two-layer wire mesh is reasonably selected. Finally, the structure optimization scheme is proposed to improve the shielding effectiveness of cable joint copper mesh.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114676879","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
Theoretical Study on Dynamic Voltage Balancing of Fast Mechanical Switches in 500kV Hybrid HVDC Circuit-Breaker 500kV混合直流断路器快速机械开关动态电压平衡的理论研究
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456707
Yifan Qin, Kaihua Long, Wei Cai, Dangguo Xu, Hao Jiang, Dawei Yang, Zhaowei Peng, Lingru Ning
{"title":"Theoretical Study on Dynamic Voltage Balancing of Fast Mechanical Switches in 500kV Hybrid HVDC Circuit-Breaker","authors":"Yifan Qin, Kaihua Long, Wei Cai, Dangguo Xu, Hao Jiang, Dawei Yang, Zhaowei Peng, Lingru Ning","doi":"10.1109/GEMCCON50979.2020.9456707","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456707","url":null,"abstract":"The main branch of 500kV high-voltage DC circuit-breaker (HVDC CB) adopts a series structure of multiple fast mechanical switches, which requires an effective distance within 2ms and can withstand over-voltage. Therefore, higher requirements on the dynamic voltage balancing and synchronization characteristics are put forward. In this paper, the action characteristics of 500kV HVDC CB and the stress of fast mechanical switches in main branch are analyzed. A model of fast mechanical switches in 500kV HVDC CB is built, and the distributed capacitance parameters are extracted. The voltage equalization measures of multi-switch series structure are studied. It is suggested that the voltage balancing capacitance can be 65nF, the damping resistance can be 200Ω, and the voltage balancing resistance can be 200MΩ. The voltage distribution of fast mechanical switches in different periods of operation is explored under operation lightning impulse (OLI), and the requirement of synchronization in the case of loss of redundancy is explored. The interval should not exceed 0.17ms.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131444155","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
Development of PD Detection Technique of Overhead distribution lines using UHF and ultrasonic 利用超高频和超声波开发架空配电线路的 PD 检测技术
2020 6th Global Electromagnetic Compatibility Conference (GEMCCON) Pub Date : 2020-10-20 DOI: 10.1109/GEMCCON50979.2020.9456747
Zeli Ju, Simeng Lu, Wei Xing, Z. Hou, Yuan Yan, Yanchao Wang
{"title":"Development of PD Detection Technique of Overhead distribution lines using UHF and ultrasonic","authors":"Zeli Ju, Simeng Lu, Wei Xing, Z. Hou, Yuan Yan, Yanchao Wang","doi":"10.1109/GEMCCON50979.2020.9456747","DOIUrl":"https://doi.org/10.1109/GEMCCON50979.2020.9456747","url":null,"abstract":"In order to improve the accuracy and efficiency of partial discharge (PD) detection on overhead distribution lines, this paper presents a method of PD detection on overhead distribution lines based on ultrasonic and ultrahigh frequency (UHF). By analyzing the propagation characteristics of ultrasonic and UHF signals, an inversion formula of PD intensity is established, which can accurately eliminate the influence of detection distance on the accuracy of PD detection. According to the difference of ultrasonic velocity and UHF signal velocity, a method of calculating PD defect distance based on statistics was proposed to provide a new reference for the defect location of covered conductor lines and improve the inspection efficiency. Then, the algorithm design scheme based on the above method is introduced in detail. Finally, a test platform was built in the laboratory to test and analyze the common defect model of overhead line, and the effectiveness of the method proposed in this paper was verified.","PeriodicalId":194675,"journal":{"name":"2020 6th Global Electromagnetic Compatibility Conference (GEMCCON)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128261850","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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