2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)最新文献_第10页

Research on Thermal Stress Distribution of GIS Basin Insulator GIS盆地绝缘子热应力分布研究

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708393

Xu Yang, Changhong Zhang, Weiguo Li, Chao Gao, F. Zhou, Ruodong Huang, Guoli Wang, W. He

{"title":"Research on Thermal Stress Distribution of GIS Basin Insulator","authors":"Xu Yang, Changhong Zhang, Weiguo Li, Chao Gao, F. Zhou, Ruodong Huang, Guoli Wang, W. He","doi":"10.1109/AEERO52475.2021.9708393","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708393","url":null,"abstract":"Basin insulator is an important part of gas insulated metal enclosed switchgear (GIS). Its mechanical performance is not good, which is easy to cause insulation failure, which threatens the safe and stable operation of GIS, and thermal stress is one of the reasons for the deterioration of mechanical performance of basin insulator. In order to study the distribution law of thermal stress and strain of basin insulator, this paper establishes 252 kV GIS basin insulator simulation model by combining simulation and test, and establishes a thermal stress ultrasonic detection system. The distribution law of thermal stress and strain of 252 kV GIS basin insulator is obtained by finite element simulation analysis and stress ultrasonic longitudinal wave reflection detection. The results show that the temperature of the insulator is gradiently distributed along the conductor flange direction when the center conductor is under the temperature load. The thermal stress and the thermal strain decrease gradually along the conductor flange direction, and increase with the increase of the temperature load. The normal ultrasonic propagation time is characterized by normal thermal strain, which is proportional to the temperature load.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"34 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87981627","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

Lightning protection safety operation assessment method of UHV AC substation based on probability theory of power system operation mode 基于电力系统运行模式概率论的特高压交流变电站防雷安全运行评估方法

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708333

Xiu-juan Chen, Jing Liu, Weidong Shi, Dengfeng Cheng, T. Lu, T. Lei

{"title":"Lightning protection safety operation assessment method of UHV AC substation based on probability theory of power system operation mode","authors":"Xiu-juan Chen, Jing Liu, Weidong Shi, Dengfeng Cheng, T. Lu, T. Lei","doi":"10.1109/AEERO52475.2021.9708333","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708333","url":null,"abstract":"International standard IEEE P1862-2014, IEEE recommended practices for over-voltage and insulation coordination of transmission system at 1000kV AC and above, and Chinese national standard GB/Z24842-2018, over-voltage and insulation coordination of 1000kV UHVAC power transmission and transformation project, clearly stipulates that the probability of general operation mode and special operation mode should be considered when predicting over-voltage. However, how to reflect the probability of the above operation mode in the lightning protection safety evaluation index of UHV AC substation, the above standards did not give a clear quantitative method. In this paper, on the basis of the above specifications and considering the probability of power system operation mode, the lightning protection safety assessment method of UHV AC substation was comprehensively and deeply studied. Firstly, the probability statistics of general operation mode and special operation mode of UHVAC transmission system were carried out. The concept of probability coefficient was put forward for the first time, and the value of probability coefficient was suggested. Then, the lightning protection safety assessment method of UHV AC substation under general operation mode and special operation mode based on probability coefficient was proposed. Finally, the lightning protection safety evaluation standard of UHV AC substation was given. The research results can further improve the scientificity of lightning protection safety assessment of UHV AC substation, and have radiation effect and reference significance for lightning protection safety assessment of UHV AC substation.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"29 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87308315","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

Operating Characteristic of HVDC Wall Bushings Used in CSG CSG用高压直流墙衬套的工作特性

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708302

Xiaoxing Wei, Jinyin Zhang, Jinwei Chu, Gulin Xia, Wenhao Lu, Yumeng Zeng

{"title":"Operating Characteristic of HVDC Wall Bushings Used in CSG","authors":"Xiaoxing Wei, Jinyin Zhang, Jinwei Chu, Gulin Xia, Wenhao Lu, Yumeng Zeng","doi":"10.1109/AEERO52475.2021.9708302","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708302","url":null,"abstract":"As a connecting device between DC field and valve hall of converter station, the DC wall bushing is in the“throat” position in HVDC project. Since the first 500kV DC wall bushing was put into operation in 1999, more than 88 DC wall bushings have been operated in CSG system. Long-term operating experience has shown that the main problems in the operation of DC wall bushings concentrated on mechanical failure, current-carrying structure and external insulation. In this paper, the structure and material of Resin Impregnated Paper bushing was described in detail first, and then the typical weakness during the electrical and mechanical design, such as internal discharge, overheating, mechanical damage and aging of silicone rubber, were analyzed respectively. More importantly, specific solutions for these damage were also put forward. The purpose of this paper is to sort out the design and structure of the DC wall bushing in operation of CSG, summarize and analyze the problems in the operation of the wall bushing, and then propose guidance and suggestions for the design, manufacture, operation and maintenance of the DC wall bushing.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"44 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87317342","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

Simulation of Graphene as a Potential CO Molecular Sensor Based on First-principles 基于第一性原理的石墨烯作为潜在一氧化碳分子传感器的模拟

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708199

Peigang Chen, Chang-yun Li, Jingyu Yang

引用次数: 0

Error Analysis of Extracting the Dielectric Spectroscopy of Oil-impregnated Paper from Oil-paper Insulation 从油纸绝缘材料中提取油浸纸介电光谱的误差分析

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708103

Qingchuan Xu, Shen-Wei Wang, Fuchang Lin, Hua Li

{"title":"Error Analysis of Extracting the Dielectric Spectroscopy of Oil-impregnated Paper from Oil-paper Insulation","authors":"Qingchuan Xu, Shen-Wei Wang, Fuchang Lin, Hua Li","doi":"10.1109/AEERO52475.2021.9708103","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708103","url":null,"abstract":"Frequency Dielectric Spectroscopy (FDS) is a kind of dielectric response diagnostic method which is performed in frequency domain and is the most widely used transformer insulation detection. An important procedure in the insulation diagnostic is extracting the dielectric spectroscopy of oil-immersed paper from oil-paper insulation based on the XY model. As in the on-site measurement, the parameters of the structure used in the calculation are often estimated, which will bring error to the calculation of the spectroscopy of paper. In this paper, firstly the theory of the XY model and the calculation of the spectroscopy of paper are introduced. Two solutions of the calculated spectroscopy of paper are shown and the selection of the two solutions is discussed. Then a representation method called 3D-dielectric spectrum is proposed for the error analysis of the calculated spectroscopy of paper. And the influences of the related variables are studied. The conclusions show that the structural parameters of insulation X and Y have few influences on the error of the calculated spectroscopy of paper. And the error of the structural parameters $Delta X$ and $Delta Y$ influence differently at different frequency bands.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"69 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86451420","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 Optical Electric Field Sensor for AC and DC Electric Field Measuring 一种用于交流和直流电场测量的光学电场传感器

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708273

Zixin Guo, Ziming He, T. Lei, Weidong Shi, S. Xie

{"title":"An Optical Electric Field Sensor for AC and DC Electric Field Measuring","authors":"Zixin Guo, Ziming He, T. Lei, Weidong Shi, S. Xie","doi":"10.1109/AEERO52475.2021.9708273","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708273","url":null,"abstract":"The technology of electric field measurement is an important method to obtain the transient process of power system, such as the overvoltage caused by switching operation. The optical electric field sensor based on Pockels effect is non-contact measurement, which has better performance and more flexible application than the traditional methods. The electro-optic crystal is the key part of the sensor, and different kinds of crystal has different charge relaxation time constant, which causes problem when measures DC electric field. In this paper, an optical electric field sensor in type of common path interferometer with LiNbO3 crystal is proposed. The response characteristics of the sensor is verified by AC electric field under different waveforms and frequencies, and DC electric field. Experimental results show that the proposed sensor can be used to measure both AC and DC electric field. The waveform of transient overvoltage recorded in UHV AC and DC substation are employed to test the performance of the sensor to real application scenario, and the results indicate good performance of the sensor.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"49 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91220865","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

Analysis of Thermo-electric Coupled Simulation for 10 kV AC XLPE Cable under Different DC Topologies and Laying Modes 不同直流拓扑和敷设方式下10kv交流交联聚乙烯电缆热电耦合仿真分析

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708110

Yicheng Mao, Qilong Wang, Jingzhe Yu, A. Paramane, Guangyuan Yao, Xiangrong Chen

{"title":"Analysis of Thermo-electric Coupled Simulation for 10 kV AC XLPE Cable under Different DC Topologies and Laying Modes","authors":"Yicheng Mao, Qilong Wang, Jingzhe Yu, A. Paramane, Guangyuan Yao, Xiangrong Chen","doi":"10.1109/AEERO52475.2021.9708110","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708110","url":null,"abstract":"This research aims to provide a theoretical reference for the 10 kV AC cable under the DC operation. To study the DC operation parameters of the AC cable in different laying methods and DC topologies, the temperature field, flow field, and electric field coupled simulation models are developed according to the parameters of the typical 10 kV three-core XLPE cable. The temperature field, flow field, steady electric field, and transient electric field of the cable under DC operation are obtained by simulation. The cable-laying methods consisting of soil, pipeline, and trench under the bipole, monopole, and triple DC topologies are analyzed. The results show that the cable in the trench and tripole DC operation has the highest ampacity, while the cable in the pipeline and monopole DC operation has the lowest ampacity. The range of the DC voltage levels of the cable in the aforementioned laying modes and DC topologies is ±10~11 kV. The maximum transmission power of the cable in the trench and monopole DC operation is the highest, while that of the cable in the pipeline and bipole DC operation is the lowest. The maximum transmission power of the AC cable significantly increases under DC operation.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"28 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89603666","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

Difference Analysis of Vibration Characteristics in Different Structural Units of Gis Equipment 地理信息系统设备不同结构单元振动特性差异分析

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9707909

Shengnan Hu, Hui Xu, Jie Zhang, Dexin Nie, Yi Jiang

{"title":"Difference Analysis of Vibration Characteristics in Different Structural Units of Gis Equipment","authors":"Shengnan Hu, Hui Xu, Jie Zhang, Dexin Nie, Yi Jiang","doi":"10.1109/AEERO52475.2021.9707909","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9707909","url":null,"abstract":"Abnormal mechanical vibration occurs frequently in the operation of Gas Insulator Switchgear (GIS), and its vibration characteristics are affected by many factors, which seriously endanger the safe and stable operation of the equipment. To master GIS equipment vibration characteristics in different structural unit, this paper took the GIS in a substation as the test object. First, aiming at bus, circuit breaker, disconnector, arrester, current transformer, voltage transformer and so on different structural unit in the same interval, we carried out the vibration test and analysis. Then the influence of voltage grade and phase on vibration was studied.Finally,the reasons of vibration difference were analyzed combining electromagnetic force, magnetostriction and equipment structure.The results show that the frequency of normal vibration signals in the gas chamber of 220 kV GIS equipment is mainly 100 Hz, and the vibration of bus chamber is the most intense.The vibration waveform of PT and arrester is seriously distorted and contains many frequency-doubling components.However, the vibration spectrum of 500 kV GIS equipment is more complicated.The research results can provide reference for defect diagnosis and status evaluation of GIS equipment.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"14 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89104344","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

Impedance Parameter Analysis and Electromagnetic Influence Modeling of Three Phase Cable Adjacent to Metal Pipeline 金属管道相邻三相电缆阻抗参数分析及电磁影响建模

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708294

Yajie Wang, Xing Liao, Jian Li, T. Lu

引用次数: 0

Monitoring of Core Components of Power Router Based on Digital Twin Technology 基于数字孪生技术的电源路由器核心部件监控

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708180

Sheng Yi, Mao Dai, Zhiwei Cai, Ximu Zeng, Guang Qu, Shuangshuang Gu

引用次数: 0