Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509142
Shifang Yang, Yunpeng Liu, Lei Sun
Algae grow extensively on the silicone rubber insulators in Sichuan province, affecting the external insulation performance of the composite insulating material surface, increasing the risk of pollution flashover of the insulator, and threatening the power system operation stability. Studying the growth regularity of algae contamination and the influence of external insulation performance have great significance to the composite insulators operation and maintenance. Simulating the voltage, electric field, and heat loss of the silicone rubber material surface covered by algae, it is found that the algae could cause an electric field distortion on the insulator surface, making temperature rise. It is proposed that the algae affect the conductivity and flashover characteristics of the outer insulating surface. At the same time, it is proposed that apoptotic algae cells still have electrical conductivity, which proves that the means of killing and incomplete removal cannot completely eliminate the influence of green algae on the insulators electrical properties.
{"title":"Simulation of Electrical Performance of Algae Contaminated Silicone Rubber","authors":"Shifang Yang, Yunpeng Liu, Lei Sun","doi":"10.1109/ICEMPE51623.2021.9509142","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509142","url":null,"abstract":"Algae grow extensively on the silicone rubber insulators in Sichuan province, affecting the external insulation performance of the composite insulating material surface, increasing the risk of pollution flashover of the insulator, and threatening the power system operation stability. Studying the growth regularity of algae contamination and the influence of external insulation performance have great significance to the composite insulators operation and maintenance. Simulating the voltage, electric field, and heat loss of the silicone rubber material surface covered by algae, it is found that the algae could cause an electric field distortion on the insulator surface, making temperature rise. It is proposed that the algae affect the conductivity and flashover characteristics of the outer insulating surface. At the same time, it is proposed that apoptotic algae cells still have electrical conductivity, which proves that the means of killing and incomplete removal cannot completely eliminate the influence of green algae on the insulators electrical properties.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"25 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":"89063277","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}
Two faults of 550kV transformer bushing are introduced and the fault phenomenon is discussed. The failure bushing is resin impregnated fiberglass type with compound filled. In order to find the fault cause, the electric field design of bushing is examined by 2D and 3D finite element simulation. The influence of nearby earthing objects on the electric field inside the bushing is studied. Based on the simulation results, it can be concluded that the unreasonable design of the bushing internal shielding pipe is the direct cause of the fault.
{"title":"Transformer fault caused by structure defect of resin impregnated fiberglass bushing","authors":"Dexu Zou, Linjie Zhao, Kejie Huang, Jianwei Cheng, Shuaibing Wang, W. Zhang","doi":"10.1109/ICEMPE51623.2021.9509223","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509223","url":null,"abstract":"Two faults of 550kV transformer bushing are introduced and the fault phenomenon is discussed. The failure bushing is resin impregnated fiberglass type with compound filled. In order to find the fault cause, the electric field design of bushing is examined by 2D and 3D finite element simulation. The influence of nearby earthing objects on the electric field inside the bushing is studied. Based on the simulation results, it can be concluded that the unreasonable design of the bushing internal shielding pipe is the direct cause of the fault.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"50 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":"89251969","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509189
Tingting Wang, Chengfeng Yin, B. Luo, Yujun Guo, Xueqin Zhang
The rapid development of agriculture and industry in China leads to a fast increase in the non-soluble deposit density (NSDD) of insulators. At present, the detection of NSDD is concentrated in the use of optical principles, which is difficult to achieve quantitative detection. Hyperspectral technique is a new comprehensive image data technique based on imaging spectroscopy, which has the advantages of multi-band, high resolution. Therefore, a non-contact detection method for detecting NSDD based on hyperspectral technique is proposed. The hyperspectral images of the insulator were obtained and preprocessed with black-and-white correction, which were used to establish the model based on the extreme learning machine with the kernel (KELM). Finally, the detection of NSDD was realized. Consequently, this study can guide the prevention of flash and configuration of external insulation in transmission lines.
{"title":"Method for detection the non-soluble deposit density of insulators based on hyperspectral technology","authors":"Tingting Wang, Chengfeng Yin, B. Luo, Yujun Guo, Xueqin Zhang","doi":"10.1109/ICEMPE51623.2021.9509189","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509189","url":null,"abstract":"The rapid development of agriculture and industry in China leads to a fast increase in the non-soluble deposit density (NSDD) of insulators. At present, the detection of NSDD is concentrated in the use of optical principles, which is difficult to achieve quantitative detection. Hyperspectral technique is a new comprehensive image data technique based on imaging spectroscopy, which has the advantages of multi-band, high resolution. Therefore, a non-contact detection method for detecting NSDD based on hyperspectral technique is proposed. The hyperspectral images of the insulator were obtained and preprocessed with black-and-white correction, which were used to establish the model based on the extreme learning machine with the kernel (KELM). Finally, the detection of NSDD was realized. Consequently, this study can guide the prevention of flash and configuration of external insulation in transmission lines.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"82 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":"88473341","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509135
Nannan Yan, Huangru Zhu, Chengchen Qian, S. Gui, Chunjie Gu
Multi-Spectral test is common methods in power facility monitoring. A high sensitive ultraviolet (UV) PD test facility has been set up for real size 145kV GIS tube. To install the UV sensor on GIS, an observation module for the sensor has been designed with qualified electric field distribution which is calculated by finite element method. This paper gives the results of UV detector for PD optical signal on samples of tip defects and floating defects, and comparing with conventional impulse current test and UHF method. In addition, the influence of electrode potentials on tip defects and signal distances on floating defects are investigated with applied voltage varying from 0 to 110kV, and propagation distances varying from 0 to 1.6m. Test results show that the UV PD impulses are clearly influenced by the defect patterns which are in accordance with the electrical signals; the tip electrode at high potential radiates stronger UV signals as voltage increasing and breaks down at 110kV, while the one at low potential radiates no signal with voltage changing; the features of decreasing UV impulse numbers with increasing distances are also discussed, which may help for detector arrangement and defects recognition.
{"title":"Analysis of Multi-Spectral Signal in GIS and Comparing with Electrical Signals","authors":"Nannan Yan, Huangru Zhu, Chengchen Qian, S. Gui, Chunjie Gu","doi":"10.1109/ICEMPE51623.2021.9509135","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509135","url":null,"abstract":"Multi-Spectral test is common methods in power facility monitoring. A high sensitive ultraviolet (UV) PD test facility has been set up for real size 145kV GIS tube. To install the UV sensor on GIS, an observation module for the sensor has been designed with qualified electric field distribution which is calculated by finite element method. This paper gives the results of UV detector for PD optical signal on samples of tip defects and floating defects, and comparing with conventional impulse current test and UHF method. In addition, the influence of electrode potentials on tip defects and signal distances on floating defects are investigated with applied voltage varying from 0 to 110kV, and propagation distances varying from 0 to 1.6m. Test results show that the UV PD impulses are clearly influenced by the defect patterns which are in accordance with the electrical signals; the tip electrode at high potential radiates stronger UV signals as voltage increasing and breaks down at 110kV, while the one at low potential radiates no signal with voltage changing; the features of decreasing UV impulse numbers with increasing distances are also discussed, which may help for detector arrangement and defects recognition.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"33 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":"81098083","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}
Temperature has a serious effect on the corrosion of windings. Grain boundary engineering (GBE) refers to adjusting the structure of grain boundary network of the copper winding through appropriate deformation and heat treatment, so as to improve the corrosion resistance of the copper winding. In this paper, the winding treated by grain boundary engineering was corroded, and the results showed that the corrosion resistance of the treated winding was improved obviously, and the copper content in insulating oil and on insulating paper was significantly reduced. The breakdown voltage of insulating oil increases obviously and the dielectric loss decreases significantly. Under the same conditions, the influence of the original winding on the insulating oil is more serious. The GBE winding has better corrosion resistance, which reduces the influence of corrosion on the insulating oil performance.
{"title":"Study on Corrosion Resistance of Grain Boundary Engineering Windings at Different Temperatures","authors":"Yuan Yuan, Zhou Jiang, Jiang Youdong, Kuang Xiongwei, Gao Xue","doi":"10.1109/ICEMPE51623.2021.9508992","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9508992","url":null,"abstract":"Temperature has a serious effect on the corrosion of windings. Grain boundary engineering (GBE) refers to adjusting the structure of grain boundary network of the copper winding through appropriate deformation and heat treatment, so as to improve the corrosion resistance of the copper winding. In this paper, the winding treated by grain boundary engineering was corroded, and the results showed that the corrosion resistance of the treated winding was improved obviously, and the copper content in insulating oil and on insulating paper was significantly reduced. The breakdown voltage of insulating oil increases obviously and the dielectric loss decreases significantly. Under the same conditions, the influence of the original winding on the insulating oil is more serious. The GBE winding has better corrosion resistance, which reduces the influence of corrosion on the insulating oil performance.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"177 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":"77368850","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509174
Hongzhi Du, Tong Wu, Yuan Fang, Shi Long, Youyuan Wang
The traditional numerical calculation methods of electrostatic field include finite element method, finite difference method and so on. Due to the time-consuming meshing, the meshless method is gradually used by scholars for physical field analysis. At present, the meshless local Petrov-Galerkin method and the meshfree weak-strong method have been reported in various fields with their better accuracy and wide applicability. This paper presents an improved meshless strong-weak coupling method based on test function. The scattered nodes are used to represent the problem domain and boundary, and the shape function is constructed by the moving least square method. For the nodes where the local integration domain does not intersect the global derivative boundary, the meshless strong form method is used to construct the basic equation. For other nodes, the meshless local weak formula method is used. The exponential function is used as a test function for weak formula expressions. By changing the coefficient of the exponential function, the shape of the test function is controlled, and the influence of the change in the size of the influence domain on the calculation accuracy is reduced. The case analysis shows that this method has higher accuracy and better convergence effect than the traditional meshless method. The proposed method has high precision and computational efficiency in processing electrical numerical calculations, and has strong astringency. This method has better application prospects than traditional methods.
{"title":"An improved meshless method based on strong-weak coupling algorithm for electric field calculation","authors":"Hongzhi Du, Tong Wu, Yuan Fang, Shi Long, Youyuan Wang","doi":"10.1109/ICEMPE51623.2021.9509174","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509174","url":null,"abstract":"The traditional numerical calculation methods of electrostatic field include finite element method, finite difference method and so on. Due to the time-consuming meshing, the meshless method is gradually used by scholars for physical field analysis. At present, the meshless local Petrov-Galerkin method and the meshfree weak-strong method have been reported in various fields with their better accuracy and wide applicability. This paper presents an improved meshless strong-weak coupling method based on test function. The scattered nodes are used to represent the problem domain and boundary, and the shape function is constructed by the moving least square method. For the nodes where the local integration domain does not intersect the global derivative boundary, the meshless strong form method is used to construct the basic equation. For other nodes, the meshless local weak formula method is used. The exponential function is used as a test function for weak formula expressions. By changing the coefficient of the exponential function, the shape of the test function is controlled, and the influence of the change in the size of the influence domain on the calculation accuracy is reduced. The case analysis shows that this method has higher accuracy and better convergence effect than the traditional meshless method. The proposed method has high precision and computational efficiency in processing electrical numerical calculations, and has strong astringency. This method has better application prospects than traditional methods.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"168 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":"81330000","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509113
Chenyang Zhang, Z. Jia
Cross-linked polyethylene cables are used in distribution network cables on a large scale due to their excellent insulation properties, but dampness will seriously reduce the operating life of the cables. Aiming at the water ingress phenomenon of the middle joint of 10kV cross-linked polyethylene cable, this paper sets water as the medium at different positions of the middle joint and adjusts the length distribution of the water gap. The finite element simulation is carried out, and the influence of water inflow at different positions on the electric field is obtained. The influence of field strength.
{"title":"Electric Field Simulation of 10kV Cable Intermediate Joint Based on Ingress Defect","authors":"Chenyang Zhang, Z. Jia","doi":"10.1109/ICEMPE51623.2021.9509113","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509113","url":null,"abstract":"Cross-linked polyethylene cables are used in distribution network cables on a large scale due to their excellent insulation properties, but dampness will seriously reduce the operating life of the cables. Aiming at the water ingress phenomenon of the middle joint of 10kV cross-linked polyethylene cable, this paper sets water as the medium at different positions of the middle joint and adjusts the length distribution of the water gap. The finite element simulation is carried out, and the influence of water inflow at different positions on the electric field is obtained. The influence of field strength.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"123 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":"79471717","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509205
I. Fofana
Since the end of the 1950s, the extraction of dissolved gases from an oil sample and the determination of the nature and concentration of these gases have been serving as a means of faults detection. The type and extent of a defect can often be diagnosed from the composition of the gases and the rate at which they are produced. This technique, known as Dissolved Gas Analysis (DGA) for detecting certain categories of faults in oil-filled devices that cannot be readily detected by other conventional methods, remains one of the most widely used today. Although there is general consensus that increasing the concentration of dissolved gas is a precursor of local deterioration of insulation, opinions differ when it comes to interpretation of the symptoms. Consequently, the first step towards improving the accuracy of DGA techniques should be understanding the mechanisms associated with chemical reactions contributing to the generation of fault gases in transformer oils. This article intends to show how the chemical composition of the insulation system may affect the analyses. Some data was also included for further understanding
{"title":"The Gassing of Insulating Fluids","authors":"I. Fofana","doi":"10.1109/ICEMPE51623.2021.9509205","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509205","url":null,"abstract":"Since the end of the 1950s, the extraction of dissolved gases from an oil sample and the determination of the nature and concentration of these gases have been serving as a means of faults detection. The type and extent of a defect can often be diagnosed from the composition of the gases and the rate at which they are produced. This technique, known as Dissolved Gas Analysis (DGA) for detecting certain categories of faults in oil-filled devices that cannot be readily detected by other conventional methods, remains one of the most widely used today. Although there is general consensus that increasing the concentration of dissolved gas is a precursor of local deterioration of insulation, opinions differ when it comes to interpretation of the symptoms. Consequently, the first step towards improving the accuracy of DGA techniques should be understanding the mechanisms associated with chemical reactions contributing to the generation of fault gases in transformer oils. This article intends to show how the chemical composition of the insulation system may affect the analyses. Some data was also included for further understanding","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"11 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78419409","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509212
S. Ai, Yiping Fan, Yuecheng Li, Yujie Gong, Pei Ding, Feiyue Ma, Xiuguang Li, Zhenxing Wang
The distribution of metal vapor is very important for the successful interruption of the arc, which directly affects the dielectric strength after the arc is extinguished. The purpose of this article is to observe the distribution of copper metal vapor after the arc when the arc is extinguished at different times by means of plane laser-induced fluorescence(PLIF). A voltage of 100V is applied to a 10mm gap, and a 45Hz sinusoidal current is generated by triggering the arc ignition, and its peak current is 2kA. A reverse current with a rising time of $mathrm{30}mumathrm{s}$ forces the sinusoidal current to extinguish at different times in its half cycle. The plane laser with a center wavelength of 324.8nm is used to excite the copper atoms, and ICCD camera is used to record the copper atoms distribution from the induced fluorescence. A pair of cup-shaped axial magnetic field (AMF) contacts made of CuCr50 were used in the experiment. The experiment found that when the arc was extinguished at 7ms, the copper vapor density value reache a peak, which is $1.8times 10^{19} mathrm{m}^{-3}$.
{"title":"The Diagnosis of Metal Vapor Density After Arc Extinction By Plane Laser-Induced Fluorescence","authors":"S. Ai, Yiping Fan, Yuecheng Li, Yujie Gong, Pei Ding, Feiyue Ma, Xiuguang Li, Zhenxing Wang","doi":"10.1109/ICEMPE51623.2021.9509212","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509212","url":null,"abstract":"The distribution of metal vapor is very important for the successful interruption of the arc, which directly affects the dielectric strength after the arc is extinguished. The purpose of this article is to observe the distribution of copper metal vapor after the arc when the arc is extinguished at different times by means of plane laser-induced fluorescence(PLIF). A voltage of 100V is applied to a 10mm gap, and a 45Hz sinusoidal current is generated by triggering the arc ignition, and its peak current is 2kA. A reverse current with a rising time of $mathrm{30}mumathrm{s}$ forces the sinusoidal current to extinguish at different times in its half cycle. The plane laser with a center wavelength of 324.8nm is used to excite the copper atoms, and ICCD camera is used to record the copper atoms distribution from the induced fluorescence. A pair of cup-shaped axial magnetic field (AMF) contacts made of CuCr50 were used in the experiment. The experiment found that when the arc was extinguished at 7ms, the copper vapor density value reache a peak, which is $1.8times 10^{19} mathrm{m}^{-3}$.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"31 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":"83812438","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509121
Kejie Huang, Jianwei Cheng, Shuaibing Wang, W. Zhang, Linjie Zhao, Shan Wang
The defect of a 550kV transformer OIP bushing was investigated. Finite element model of the bushing is established and the electric field is obtained, the insulation design of bushing is investigated, and the design margin of various key points of bushing is analyzed. The detailed modelling and simulation of wrinkles on foils is carried out. The influence of wrinkle size and position on the local electric field is analyzed. According to the disassembly and simulation results, suggestions for the design and manufacturing technique of bushing are given.
{"title":"Defects Analysis of 550kV OIP Transformer Bushing","authors":"Kejie Huang, Jianwei Cheng, Shuaibing Wang, W. Zhang, Linjie Zhao, Shan Wang","doi":"10.1109/ICEMPE51623.2021.9509121","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509121","url":null,"abstract":"The defect of a 550kV transformer OIP bushing was investigated. Finite element model of the bushing is established and the electric field is obtained, the insulation design of bushing is investigated, and the design margin of various key points of bushing is analyzed. The detailed modelling and simulation of wrinkles on foils is carried out. The influence of wrinkle size and position on the local electric field is analyzed. According to the disassembly and simulation results, suggestions for the design and manufacturing technique of bushing are given.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"9 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":"83834300","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}
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