2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)最新文献_第6页

Preparation and electrical property of carbon foam grounding material by pyrolysis of cyanate esters modified with phosphorus contained Schiff-base 含磷希夫碱改性氰酸酯热解制备碳泡沫接地材料及其电性能研究

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509146

Mian Fan, H. He, Bo Tan, Xianghan Wang, Xuefang Tong, Min Dai

引用次数: 0

Diagnosis of overall 10kV cable insulation state based on transient voltage transfer characteristics 基于暂态电压转移特性的10kV电缆绝缘总体状态诊断

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509249

Qingsong Jie, Qing Yang, Yu Zhang, Hao Cui

引用次数: 0

Research on the Defect Detection Technology of Abnormal Vibration of GIS Equipment Based on Acoustic Emission Analysis Technology 基于声发射分析技术的GIS设备异常振动缺陷检测技术研究

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509228

Xiping Jiang, Yingkai Long, Yongfu Li

引用次数: 0

Influence of the length and thickness of nonlinear material on electric field distribution in cable terminal 非线性材料长度和厚度对电缆终端电场分布的影响

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509081

Qinghao Yang, Jun Hu, Zhikang Yuan, Jinzhong Li, Yu Yin, Hao Tang

{"title":"Influence of the length and thickness of nonlinear material on electric field distribution in cable terminal","authors":"Qinghao Yang, Jun Hu, Zhikang Yuan, Jinzhong Li, Yu Yin, Hao Tang","doi":"10.1109/ICEMPE51623.2021.9509081","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509081","url":null,"abstract":"For high-voltage power equipment, insulation is an important issue. The use of non-linear material can improve the electric field distribution in the device to increase the insulation utilization factor of the insulation structure. This paper takes the cable terminal as the research object, studies the influence of the thickness and length of the nonlinear material on the electric field distribution, and finds the best solution for the cable terminal. Use COMSOL to build a simulation model of DC 500kV cable terminal. Through the controlled variable method, the length and thickness of the nonlinear material are changed in the range of 300mm to 500mm and 4mm to 8mm respectively, and the corresponding electric field distribution is obtained. The results show that the end of the nonlinear material is the weak point of the high-voltage cable terminal. Within the set range, the electric field strength there decreases with the increase of the length, and also shows a decreasing trend with the increase of the thickness. The increase will increase the field strength of the surface where the external insulation is in contact with the air, so for the DC 500kV cable terminal, the best solution is when the nonlinear length is 500mm and the thickness is 4mm.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"46 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83174782","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

Failure Analysis of HVDC Cable Accessories During R&D Tests 高压直流电缆附件研发试验失效分析

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509159

Yi Luo, Mingyu Zhou, T. Fechner, Haitian Wang

引用次数: 3

Two methods of simulating corona current pulses in SF6 under negative DC voltage 两种模拟SF6负直流电压下电晕电流脉冲的方法

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509196

W. Ding, Yanliang He, A. Sun, Guanjun Zhang

引用次数: 0

A Modular Over-voltage Trigger Device for Two-electrode Spark-gap Switches 一种用于两极火花间隙开关的模块化过电压触发装置

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509071

Xuedi Liu, Zicheng Zhang, Huibo Zhang, Haoran Zhang, Shifei Liu, Longchun Yan

{"title":"A Modular Over-voltage Trigger Device for Two-electrode Spark-gap Switches","authors":"Xuedi Liu, Zicheng Zhang, Huibo Zhang, Haoran Zhang, Shifei Liu, Longchun Yan","doi":"10.1109/ICEMPE51623.2021.9509071","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509071","url":null,"abstract":"In order to meet the requirement of high repetitive operation of Marx generator, which is normally restricted by the ablation and self-breakdown problems of three-electrode spark-gap switches, a modular over-voltage trigger device for two-electrode spark-gap switches is designed in this paper. The proposed two-electrode spark-gap switches are designed on the basis of an eight-level inductive isolated Marx generator. Numerical simulations and experiments are carried out for a single stage over-voltage trigger device, respectively. The influence of the transformer parameters, pulse width, and peak value of output voltage on the trigger waveform is discussed. Furthermore, the overall simulation model of the Marx-generator triggered using over-voltage triggering method is established. The results show that trigger waveforms with amplitude of 5.8 kV, front edge of 160 ns, and half-width of $1.8 mumathrm{s}$ are achieved for a single stage trigger when the input voltage is 220 V. A programmable SiC MOSFET driver circuit based on FPGA platform is designed and will be used in the following study of the device.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"264 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79720067","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

Integrated decision-making for line loss online calculation and management based on situation awareness visualization 基于态势感知可视化的线损在线计算与管理集成决策

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509237

L. Yao, L. Ni, Huanlei Yu, Qi Ding, Jianmin Zhang, Jiangming Zhang, An Wen

{"title":"Integrated decision-making for line loss online calculation and management based on situation awareness visualization","authors":"L. Yao, L. Ni, Huanlei Yu, Qi Ding, Jianmin Zhang, Jiangming Zhang, An Wen","doi":"10.1109/ICEMPE51623.2021.9509237","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509237","url":null,"abstract":"In view of the large amount of data in the low-voltage distribution network (LVDN) and the low efficiency of line loss analysis, this paper constructs an integrated decision-making platform for line loss online calculation and management based on situation awareness visualization technology. In this research, how to make full use of the existing system data to carry out the research on the intelligent diagnosis model of the line loss abnormality in the distribution network, and use the visualization method to realize the abnormality monitoring and automatically generate the loss reduction strategy is the goal of this article. First, through the user's electricity consumption data obtained from the electricity collection system; secondly, combine the user files of the marketing business application system, the geographic information of the GIS system and other data, and use big data analysis technology to realize the analysis and application of multi-source system data integration; Finally, develop main functions such as automatic identification of LVDN topology, online calculation and monitoring of line loss, situation awareness visualization of line loss in LVDN, intelligent diagnosis of line loss abnormalities and recommendation of loss reduction strategies. Applying human-computer interaction of situation awareness and visualization and abnormal diagnosis intelligence, intuitively and accurately display the line loss management problems in the distribution network. Through the test of specific examples, the effectiveness of the decision-making platform is verified.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85555563","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

Surface Charge and Electric Field Distribution along Tri-post Insulators in ±800 kV GIL ±800kv高压下三柱绝缘子表面电荷和电场分布

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509193

J. Dong, B. Du, J. Li, H. C. Liang, H. Yao, Y. Chen

引用次数: 4

Characteristics Analysis and Experimental Verification of Amorphous Metal Distribution Transformer Core Vibration Coupled by Electromagnetic - Mechanical Field 电磁场-机械场耦合下非晶金属配电变压器铁心振动特性分析及实验验证

2021 International Conference on Electrical Materials and Power Equipment (ICEMPE) Pub Date : 2021-04-11 DOI: 10.1109/ICEMPE51623.2021.9509074

Jiacheng Li, Daosheng Liu, Peng Li

{"title":"Characteristics Analysis and Experimental Verification of Amorphous Metal Distribution Transformer Core Vibration Coupled by Electromagnetic - Mechanical Field","authors":"Jiacheng Li, Daosheng Liu, Peng Li","doi":"10.1109/ICEMPE51623.2021.9509074","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509074","url":null,"abstract":"With the requirement of high efficiency and low cost for distribution transformer, amorphous metal distribution transformer (AMDT), fabricated by employing amorphous alloy strip as the core, shows a great developmental potential in power equipment industry. However, due to the disadvantages of large magnetostriction and excessive sensitive to stress, the AMDT core can not be fully clamped, which leads to higher vibration magnitude than silicon steel one. The core vibration characteristic analysis environment is a typical multi-physical field, and many researchers tried to calculate the magnetic and dynamic parameters by FEA, but the simulation results are not convinced because of lacking experimental verification. In this paper, a 3-D model of AMDT core was established, and the magnetic flux density and electromagnetic force were calculated by coupling analysis of electromagnetic and mechanical field. To verify the simulation results, a vibration testing platform of the AMDT core was built, and the piezoelectric vibration acceleration sensor were adopted to obtain the vibration signals. The experiment results show that the vibration intensity at upper yoke is larger than other area, which is consistent with the simulation result.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"11 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82217793","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