2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)最新文献_第7页

A Multi-sensor Fusion Approach for Susceptibility Analysis in Smart Substation based on Deep Bayesian Network 基于深度贝叶斯网络的智能变电站敏感度分析多传感器融合方法

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961494

Liu Kejie, X. Nianwen, Liu Jianben

引用次数: 0

Simulation of Space Charge in LDPE under AC Electric Field 交流电场作用下LDPE空间电荷的模拟

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961382

Xie Danyang, Jiandong Wu, Fa Yang, Yi Yin

{"title":"Simulation of Space Charge in LDPE under AC Electric Field","authors":"Xie Danyang, Jiandong Wu, Fa Yang, Yi Yin","doi":"10.1109/ICHVE53725.2022.9961382","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961382","url":null,"abstract":"Space charge accumulation is an important issue to be considered in power transmission systems. However, because of the unavoidable limitation of the temporal resolution and spatial of the detection system, the detection is difficult. The numerical simulation of space charge under the AC field can qualitatively explain the source and the charge transportion principle of the space charge under AC field, thus can preliminarily explain the transport process of space charge under the circumstances of the AC field. In this paper, on the basis of the bipolar carrier transport model, the numerical simulation of the space charge transport process in LDPE (Low-density polyethylene) under different frequencies of AC field is carried out. The results show that there is less space charge accumulation in the AC field and accumulation of space charge is mainly concentrated on the surface side of LDPE sample. There is almost no space charge accumulation on LDPE sample surface under the condition that the electric field applied frequency is 50Hz and above. Under the 0.1 Hz electric field, a small amount charge of the same polarity as the electrode appears on the surface side of LDPE sample, there is obvious charge hysteresis at the zero-crossing point of the electric field. When the frequency of electric field are 0.01Hz and 0.005Hz, the amount of accumulated space charge increases significantly, and the hysteresis phenomenon at the zero-crossing point of the electric field becomes more obvious. Only under the low-frequency AC field, there is obvious accumulation of space charge on the surface side of LDPE sample, and the polarity of the charge is the same as that of the electrode field. The above phenomenon may be related to traps inside the medium.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133303746","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

Discharge characteristics of DBD tube electrode array and its modification for PET films PET薄膜用DBD管电极阵列的放电特性及其改性

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014491

Li Fangsong, Zhu Xi, Guan Xiuhan, Xu Jingang, Luo Zhaorui, Wang Sen, Cui Xinglei, Liu Feng, Fang Zhi

{"title":"Discharge characteristics of DBD tube electrode array and its modification for PET films","authors":"Li Fangsong, Zhu Xi, Guan Xiuhan, Xu Jingang, Luo Zhaorui, Wang Sen, Cui Xinglei, Liu Feng, Fang Zhi","doi":"10.1109/ICHVE53725.2022.10014491","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.10014491","url":null,"abstract":"Polymers films are commonly used in industry for packaging applications, machinery manufacturing and power electronics industries. To further improves its application field, surface modification is usually necessary to improve wettability, printability and adhesive properties. Most of the existing atmospheric pressure low temperature plasma reactors range in size from a few to tens of centimeters and work under intermittent operation, which can't meet the need for industrial continuous processing. In this paper, an atmospheric dielectric barrier discharge (DBD) for large-scale processing was designed, which was applied to treat polyethylene glycol terephthalate (PET) film. The discharge characteristics under different electrode structure parameters and the physicochemical properties of the PET surface before and after modification were investigated. The results show that the increase in the electrode gap leads to more intense and diffuse discharge with stronger luminous intensity. The decrease in processing speed and the increase in voltage amplitude both enhance the surface hydrophilicity. The increased surface roughness and introduction of active groups on PET surface after plasma treatment improve the hydrophilicity of the material surface.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132152446","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

Study on Mechanical Vibration Characteristics of GIS Equipment under Variable Frequency Currents GIS设备在变频电流下的机械振动特性研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961530

Xu Li, Jian Hao, Qingsong Liu, R. Gong, Xiping Jiang, Yi-ming Ding

{"title":"Study on Mechanical Vibration Characteristics of GIS Equipment under Variable Frequency Currents","authors":"Xu Li, Jian Hao, Qingsong Liu, R. Gong, Xiping Jiang, Yi-ming Ding","doi":"10.1109/ICHVE53725.2022.9961530","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961530","url":null,"abstract":"Mechanical vibration signals of GIS equipment are important information to reflect the operating status of equipment, but the vibration excitation of existing research is mostly based on a single power frequency current, and the detection effect has certain limitations. Therefore, in order to explore the influence of current frequency on GIS mechanical vibration characteristics, this paper carried out research on GIS mechanical vibration characteristics under variable frequency current excitation. Firstly, the mechanical vibration simulation platform of 110 kV GIS equipment under variable frequency current excitation was built in the laboratory. Then, the vibration signals generated by the equipment shell under normal operation state were collected based on the mechanical vibration detection system. Finally, the evolution laws of time domain and frequency domain vibration spectra of GIS equipment under different current frequencies and loads were studied. The results show that the overall time domain waveforms are smooth and the main vibration frequencies are twice the frequencies of excitation currents. Under the condition of the variable frequency current excitation with the same amplitude, the amplitudes of time domain and frequency domain vibration spectra of vibration signals are the largest when the GIS equipment is excited by 1200 A current at 40 Hz and 2400 A current at 80 Hz. Under the condition of the variable amplitude currents excitation with the same frequency, the amplitudes of vibration signals are positively correlated with the amplitudes of currents, and the distributions of frequency spectra are highly concentrated.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131306873","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 Novel Junction Temperature Estimation Approach for High Voltage IGBT Modules Based on Pre-Turn-Off Current 一种基于预关断电流的高压IGBT模块结温估计新方法

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961533

Q. Jiao, Lingyu Zhu, C. Zhan, Yaxin Zhang, Zhanlei Liu, Weicheng Wang, Kefan Yu, S. Ji

引用次数: 1

Research on VFTO Characteristics of Substation using GIL-GIS-oil/SF6 Bushing Structure 吉尔-吉斯油/SF6套管结构变电所VFTO特性研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961809

Junfei Wang, X. Jiang, Lei Wang, Han Li

{"title":"Research on VFTO Characteristics of Substation using GIL-GIS-oil/SF6 Bushing Structure","authors":"Junfei Wang, X. Jiang, Lei Wang, Han Li","doi":"10.1109/ICHVE53725.2022.9961809","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961809","url":null,"abstract":"GIL is one of the important ways to connect GIS substations through existing overhead lines in urban substations, and GIS is directly connected to the main transformer through oil/SF6 bushings, which is one of the important means to make the substation layout more compact. The research object of this paper is based on a 500kV substation. When VFTO is generated by the operation of the disconnector, the modeling methods of GIL and GIS busduct based on their geometric dimensions to obtain the unit-length-to-ground capacitance and unit-length conductor inductance, together with the travel time and surge impedance. The oil/SF6 bushing can be simulated as a multi-layer equivalent model considering its structure, and other GIS components makes use of electrical equivalent circuits composed by lumped elements (capacitances, inductances and resistances). Finally, the equivalent model of the whole substation for VFTO simulation is established in EMTP, and the VFTO waveform characteristics of the substation are analyzed through different operation modes. Furthermore, the influencing factors of VFTO are analyzed, and the suppression of VFTO waveform is simulated by means of damping resistance and magnetic ring.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"257 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124229145","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

Micro-mechanism Influence of Vegetable Oil and Mineral Oil on Thermal Decomposition of Insulating Paper Based on ReaxFF-MD 植物油和矿物油对基于ReaxFF-MD的绝缘纸热分解的微观机理影响

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961523

Xuefeng Hu, Haoxi Cong, Yuxin Wang, Huiming Shao, Qingmin Li, Hu Jin, Changan Lu, Xiaoqing Qi

{"title":"Micro-mechanism Influence of Vegetable Oil and Mineral Oil on Thermal Decomposition of Insulating Paper Based on ReaxFF-MD","authors":"Xuefeng Hu, Haoxi Cong, Yuxin Wang, Huiming Shao, Qingmin Li, Hu Jin, Changan Lu, Xiaoqing Qi","doi":"10.1109/ICHVE53725.2022.9961523","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961523","url":null,"abstract":"Compared with mineral oil, vegetable oil has the advantages of high ignition point, high flash point, renewable and easy to degrade, which also plays a better role in the protection of insulating paper. At present, the microscopic mechanism of thermal decomposition of insulating paper is still unclear, and the microscopic influence law of mineral oil and vegetable oil on insulating paper has not been proved. In this paper, molecular dynamics simulations based on the reactive force field (ReaxFF) are performed. The reaction paths and characteristic products of the degradation process of insulating paper are obtained and statistical analysis of the bond breaking probability of pyran rings in insulating paper is carried out. It is found that the first step in the cleavage of insulating paper was the glycosidic bond, followed by the opening of the pyran ring and the cleavage of the hydroxyl group. In addition, the degradation of insulating paper in mineral oil is more severe than that in vegetable oil. The above research revealed the microscopic mechanism of the cracking process of insulating paper, and proposed the influence rule of mineral oil and vegetable oil on insulating paper.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114491264","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

Study on Lightning Flashover Risk Assessment and Lightning Protection Measures of a 220kV Line 220kV线路雷电闪络风险评估及防雷措施研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961757

Jia-Xu Hu, Huiqi Li, Zhuohong Pan

{"title":"Study on Lightning Flashover Risk Assessment and Lightning Protection Measures of a 220kV Line","authors":"Jia-Xu Hu, Huiqi Li, Zhuohong Pan","doi":"10.1109/ICHVE53725.2022.9961757","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961757","url":null,"abstract":"In recent years, lightning accidents occur frequently in power grid. 220kV transmission lines with low insulation level are prone to trip due to lightning strike, which directly affects the production and living electricity consumption in surrounding areas. In order to improve the lightning damage resistance ability of transmission lines and reduce the lightning trip rate, it is necessary to effectively improve the lightning protection performance evaluation and treatment level of transmission lines, and to design and transform the lightning protection facilities economically and reasonably. Based on the line parameters, a large number of lightning monitoring data, the improved electrical geometric model and ATP/EMTP method, the winding and attack trip rate of a 220kV DC transmission line has been calculated. Combined with trip rate index, the risk assessment of lightning hazard has been realized. The distribution of ground lightning density along the transmission line corridor has been obtained by using line corridor grid method. Combined with the actual tripping rate index, the mine hazard risk assessment of the line base by base tower has been realized. According to the result of risk assessment, combined with the characteristics of various lightning protection measures, choose to install the lightning arrester, install the side needle to prevent around the impact and reduce the resistance of three measures for lightning protection transformation.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115002877","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

Study on AC Breakdown Characteristics of Epoxy Impregnated Fabric Based Insulation Materials 环氧浸渍织物基绝缘材料交流击穿特性研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961765

Xudong Li, Yuefang Li, Xin Liu

{"title":"Study on AC Breakdown Characteristics of Epoxy Impregnated Fabric Based Insulation Materials","authors":"Xudong Li, Yuefang Li, Xin Liu","doi":"10.1109/ICHVE53725.2022.9961765","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961765","url":null,"abstract":"Dry-type insulation is widely used in high voltage equipment due to its advantages of high insulation strength, superior environmental performance, good fire performance and small maintenance workload. Fabric based insulation materials have excellent insulation performance and flexibility, and are widely used in the dry-type insulation. Dry-type insulation is made of epoxy resin casting, so the epoxy wettability of fabric based insulation material and its breakdown characteristics after impregnation are the basis of design of dry-type insulation. In this paper, the epoxy wettability of three kinds of typical fabric based insulation materials, namely rayon fabric (RF), aramid paper (AP) and Dacron-Mylar-Dacron (DMD), and their breakdown characteristics under AC voltage after impregnation were tested. The results showed that the RF had the best wettability, AP had the middle wettability and DMD had the worst wettability. The statistical analysis of breakdown voltage showed that the breakdown strength of epoxy impregnated DMD was the highest, that of AP was the middle, and that of RF was the lowest, but all of them were lower than that of pure epoxy resin. The influence of the material thickness on the breakdown characteristics and the breakdown mechanism of epoxy impregnated fabric based insulation material were also analyzed.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114967831","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 partially high conductive coating adjusting surface charge distribution for mitigating surface flashover 一种调节表面电荷分布以减轻表面闪络的部分高导电性涂层

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014475

Binbin Li, Jie Huang, Shenglong Zhu, Yabin Ma, Shaorui Qin, J. Xue, Zhu Zhang, L. Ding

引用次数: 0