Pub Date : 2018-06-01DOI: 10.1109/EIC.2018.8481083
A. Litinsky, G. Schmidt, F. Pohlmann, H. Hirsch
Numerous tests have been performed to narrow down the contributing factors for the mechanism of OCP erosion on rotating machines. The intensity of impairing partial discharges as well as the thermal and electrical ageing of the material depends strongly on the temperature and electrical field strength. However, the type of used conductive tape material appears to be essential regarding its durability against partial discharges and therefore the appearance of erosion signs in an electrical machine lifetime. Advanced testing and evaluation methods have been obtained for assessment of OCP tape material durability.
{"title":"Advanced Assessment of Outer Corona Protection Material Durability","authors":"A. Litinsky, G. Schmidt, F. Pohlmann, H. Hirsch","doi":"10.1109/EIC.2018.8481083","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481083","url":null,"abstract":"Numerous tests have been performed to narrow down the contributing factors for the mechanism of OCP erosion on rotating machines. The intensity of impairing partial discharges as well as the thermal and electrical ageing of the material depends strongly on the temperature and electrical field strength. However, the type of used conductive tape material appears to be essential regarding its durability against partial discharges and therefore the appearance of erosion signs in an electrical machine lifetime. Advanced testing and evaluation methods have been obtained for assessment of OCP tape material durability.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122635194","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 : 2018-06-01DOI: 10.1109/EIC.2018.8481092
A. Wilder
As machine environments become more power-dense, understanding the aging of insulation is critical for successful machine design and performance. It is well-known that electrical aging under stress can be monitored over time using partial discharge and breakdown strength. There are also tests that indicate comparative “condition”, such as polarization index and dielectric discharge. These characterizations give little information as to the nature of the aging, necessary for specifying new or improved materials. Such information would also be useful in machine design decisions. A survey of materials characterization tools was made to assess the nature of aging under mechanical, thermal, and electrical stresses. The use of three tools is recommended for characterization of the nature of aging in electrical insulation materials: Dielectric Thermal Analysis (DETA), Dynamic Mechanical Analysis for extension (DMA-Extension), and Dynamic Mechanical Analysis for shear (DMA-Shear). With these tools, significant differences are found between the aging behaviors of materials (e.g., between unfilled epoxy and silicone thermoset polymers).
{"title":"Characterization of Insulation Aging with Power- Dense Environments","authors":"A. Wilder","doi":"10.1109/EIC.2018.8481092","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481092","url":null,"abstract":"As machine environments become more power-dense, understanding the aging of insulation is critical for successful machine design and performance. It is well-known that electrical aging under stress can be monitored over time using partial discharge and breakdown strength. There are also tests that indicate comparative “condition”, such as polarization index and dielectric discharge. These characterizations give little information as to the nature of the aging, necessary for specifying new or improved materials. Such information would also be useful in machine design decisions. A survey of materials characterization tools was made to assess the nature of aging under mechanical, thermal, and electrical stresses. The use of three tools is recommended for characterization of the nature of aging in electrical insulation materials: Dielectric Thermal Analysis (DETA), Dynamic Mechanical Analysis for extension (DMA-Extension), and Dynamic Mechanical Analysis for shear (DMA-Shear). With these tools, significant differences are found between the aging behaviors of materials (e.g., between unfilled epoxy and silicone thermoset polymers).","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"18 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129657161","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 : 2018-06-01DOI: 10.1109/EIC.2018.8480890
D. McKinnon, Nemanja Mihailovic
In this paper we will review the effects of test equipment on the measurement of the Insulation Resistance Profile (IRP) as found in Annex D of IEEE 43–2013. There are several areas in which test equipment may affect the IRP such as High Voltage (HV) and Low Voltage (LV) power supply noise, HV and LV filtering, and Data Acquisition (DAQ). To evaluate the effects of the test equipment on the IRP, we used simulation models created from actual field tests whose results were previously published. We modified the models to include power supply noise such as found in common switch mode power supplies and basic filtering circuitry used in test equipment. Using these simulation models, we evaluated various aspects of how the power supply noise and filtering circuits of test equipment may affect the Insulation Resistance Profile. We will then present summary results of these simulations.
{"title":"Effect of Measurement Instrumentation on the Insulation Resistance Profile","authors":"D. McKinnon, Nemanja Mihailovic","doi":"10.1109/EIC.2018.8480890","DOIUrl":"https://doi.org/10.1109/EIC.2018.8480890","url":null,"abstract":"In this paper we will review the effects of test equipment on the measurement of the Insulation Resistance Profile (IRP) as found in Annex D of IEEE 43–2013. There are several areas in which test equipment may affect the IRP such as High Voltage (HV) and Low Voltage (LV) power supply noise, HV and LV filtering, and Data Acquisition (DAQ). To evaluate the effects of the test equipment on the IRP, we used simulation models created from actual field tests whose results were previously published. We modified the models to include power supply noise such as found in common switch mode power supplies and basic filtering circuitry used in test equipment. Using these simulation models, we evaluated various aspects of how the power supply noise and filtering circuits of test equipment may affect the Insulation Resistance Profile. We will then present summary results of these simulations.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126025909","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 : 2018-06-01DOI: 10.1109/EIC.2018.8481049
A. Iannarelli, Mohamad Gaffarian Niasar, R. Ross
Dielectric elastomers (DE) have lately drawn attention for their use in soft actuators and electromechanical energy harvester. Excellent dielectric properties and high mechanical deforming capability are key requirements of DEs. Given that the output strain of DE system is proportional to the applied electric field squared (and vice versa), - high electric field is needed to generate large displacement. Similarly to any other insulation exposed to high electric field, DEs undergo electrical ageing. Furthermore, DEs undergo continuous mechanical deformation during its lifetime. Therefore, the lifetime of DE system can be shortened by the simultaneous action of electric and dynamical mechanical stress. This can lead to a faster overall ageing of DE system with respect to other common HV devices, that usually are mechanically-static. To extend the useful life of the system it is firstly important to know how fast the electromechanical degradation process is and what is the contribution of electrical and mechanical stresses. Secondly, assess its ageing stage and adjust its output accordingly, albeit with a lower effectiveness. Partial discharge testing has been used to assess the health of a silicon polymer elastomer typically used in dielectric elastomer generator. The mechanical ageing of a DE system has been qualitatively evaluated by monitor PD activity over different cycles of usage and reported in this paper.
{"title":"Assessing Partial Discharge Activity in Dielectric Elastomer Under Cyclic Tensile Stress","authors":"A. Iannarelli, Mohamad Gaffarian Niasar, R. Ross","doi":"10.1109/EIC.2018.8481049","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481049","url":null,"abstract":"Dielectric elastomers (DE) have lately drawn attention for their use in soft actuators and electromechanical energy harvester. Excellent dielectric properties and high mechanical deforming capability are key requirements of DEs. Given that the output strain of DE system is proportional to the applied electric field squared (and vice versa), - high electric field is needed to generate large displacement. Similarly to any other insulation exposed to high electric field, DEs undergo electrical ageing. Furthermore, DEs undergo continuous mechanical deformation during its lifetime. Therefore, the lifetime of DE system can be shortened by the simultaneous action of electric and dynamical mechanical stress. This can lead to a faster overall ageing of DE system with respect to other common HV devices, that usually are mechanically-static. To extend the useful life of the system it is firstly important to know how fast the electromechanical degradation process is and what is the contribution of electrical and mechanical stresses. Secondly, assess its ageing stage and adjust its output accordingly, albeit with a lower effectiveness. Partial discharge testing has been used to assess the health of a silicon polymer elastomer typically used in dielectric elastomer generator. The mechanical ageing of a DE system has been qualitatively evaluated by monitor PD activity over different cycles of usage and reported in this paper.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128979072","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 : 2018-06-01DOI: 10.1109/EIC.2018.8481031
S. Boggs, A. Kumada, Kenichi Nojma, K. Karasawa
This contribution addresses the quantitative relationship between end turn stress grading characteristics of form would rotating machines driven by PWM waveforms and the stress grading nonlinear properties based on mathematical analysis and confirmed by FEA computations. Power dissipation is also addressed.
{"title":"Characterization of Optimized SGT Characteristics","authors":"S. Boggs, A. Kumada, Kenichi Nojma, K. Karasawa","doi":"10.1109/EIC.2018.8481031","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481031","url":null,"abstract":"This contribution addresses the quantitative relationship between end turn stress grading characteristics of form would rotating machines driven by PWM waveforms and the stress grading nonlinear properties based on mathematical analysis and confirmed by FEA computations. Power dissipation is also addressed.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130822303","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}
Metal-Oxide Arrester (MOA) On-line monitoring reflects the state of the equipment, especially when it comes to leakage current which shows the Insulation strength. As the differences in the operating environment and the influence of temperature and moisture on leakage current testing, each MOA has its own typical value. However, nowadays the MOA alarm threshold is only one, lack consideration of different operation environments. It will cause overhaul or lack of repair. This paper proposes an individualized MOA On-line Alarm Threshold Selecting Method. First, aggregate MOA on-line monitoring data, including 1 year's MOA monitoring data. Then, preprocessing detection data, including identification the singular value by 3 deltas rule and smooth the noise by low pass filter. For the problem of monitoring data distortion, identification the singular value by 3 deltas rules and smooth the noise by Yang Hui triangle. Then sort the data on multiple criteria and calculate the leakage threshold based on the confident, which correspond to the fault ratio. By this means, the MOA targeted alarm threshold has been selected. Field applications shows that the targeted alarm threshold decrease the false alarm rate greatly. It illustrated that the method is valid and economical, and worth popularization.
{"title":"Metal-Oxide Arrester On-Line Processing and Alarm Threshold Selecting Method","authors":"Peng Zhang, B. Qi, Meng Huang, Chengrong Li, Jincang Niu, Jiafeng Qim","doi":"10.1109/EIC.2018.8480893","DOIUrl":"https://doi.org/10.1109/EIC.2018.8480893","url":null,"abstract":"Metal-Oxide Arrester (MOA) On-line monitoring reflects the state of the equipment, especially when it comes to leakage current which shows the Insulation strength. As the differences in the operating environment and the influence of temperature and moisture on leakage current testing, each MOA has its own typical value. However, nowadays the MOA alarm threshold is only one, lack consideration of different operation environments. It will cause overhaul or lack of repair. This paper proposes an individualized MOA On-line Alarm Threshold Selecting Method. First, aggregate MOA on-line monitoring data, including 1 year's MOA monitoring data. Then, preprocessing detection data, including identification the singular value by 3 deltas rule and smooth the noise by low pass filter. For the problem of monitoring data distortion, identification the singular value by 3 deltas rules and smooth the noise by Yang Hui triangle. Then sort the data on multiple criteria and calculate the leakage threshold based on the confident, which correspond to the fault ratio. By this means, the MOA targeted alarm threshold has been selected. Field applications shows that the targeted alarm threshold decrease the false alarm rate greatly. It illustrated that the method is valid and economical, and worth popularization.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131455632","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 : 2018-06-01DOI: 10.1109/EIC.2018.8481062
W. McDermid
When partial discharge measurements are made on individual stator coils or bars an objective may be the detection of internal voids and delaminations. In this case a detection system that is relatively insensitive to external discharges may be appropriate. As an example, the response of three different coupling systems is provided for coils and bars having external discharges associated with the stress control zone adjacent to the slot.
{"title":"Response of PD Couplers to External Discharges","authors":"W. McDermid","doi":"10.1109/EIC.2018.8481062","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481062","url":null,"abstract":"When partial discharge measurements are made on individual stator coils or bars an objective may be the detection of internal voids and delaminations. In this case a detection system that is relatively insensitive to external discharges may be appropriate. As an example, the response of three different coupling systems is provided for coils and bars having external discharges associated with the stress control zone adjacent to the slot.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132531462","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 : 2018-06-01DOI: 10.1109/eic.2018.8481077
Cheng Wang, Y. Tu, Zhikang Yuan, Han Jiang
Decay-Like fracture of composite insulators had become a problem that has plagued the operating department in recent years. People had found that there were perforations on the silicone rubber house of the Decay-Like fracture insulators. It was speculated that the breakdown of the silicone rubber house during operation was the cause of perforation. The effect of water invasion on the breakdown characteristics of HTV silicone rubber was studied in this paper. Firstly, the water absorption test was carried out on HTV silicone rubber, and the water absorption characteristics of the material based on the Langmuir diffusion model were obtained. The change law of the content of free water and bound water during the water absorption process were studied. Secondly, we measured the breakdown voltage of silicone rubber under different water absorption degrees, and the relationship between free water content, as well as bound water, and the breakdown voltage of silicone rubber was obtained, respectively. We found that the free water content in the silicone rubber has a good correspondence with the breakdown voltage. We proposed that the breakdown voltage drop of HTV silicone rubber was caused by the formation of a water bridge under electric field.
{"title":"Study on Breakdown of HTV Silicone Rubber After Water Invasion","authors":"Cheng Wang, Y. Tu, Zhikang Yuan, Han Jiang","doi":"10.1109/eic.2018.8481077","DOIUrl":"https://doi.org/10.1109/eic.2018.8481077","url":null,"abstract":"Decay-Like fracture of composite insulators had become a problem that has plagued the operating department in recent years. People had found that there were perforations on the silicone rubber house of the Decay-Like fracture insulators. It was speculated that the breakdown of the silicone rubber house during operation was the cause of perforation. The effect of water invasion on the breakdown characteristics of HTV silicone rubber was studied in this paper. Firstly, the water absorption test was carried out on HTV silicone rubber, and the water absorption characteristics of the material based on the Langmuir diffusion model were obtained. The change law of the content of free water and bound water during the water absorption process were studied. Secondly, we measured the breakdown voltage of silicone rubber under different water absorption degrees, and the relationship between free water content, as well as bound water, and the breakdown voltage of silicone rubber was obtained, respectively. We found that the free water content in the silicone rubber has a good correspondence with the breakdown voltage. We proposed that the breakdown voltage drop of HTV silicone rubber was caused by the formation of a water bridge under electric field.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"490 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132042781","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 : 2018-06-01DOI: 10.1109/EIC.2018.8480891
H. Javed, Kang Li, Guoqiang Zhang, A. Plesca
Air decomposition products can be used to detect different partial discharge (PD) defects but the metal materials in a PD area can significantly affect air decomposition by-products characteristics. Disregarding the effect of metal materials on such characteristics inevitably result in certain errors when using them to diagnose the metallic protrusion and surface discharge defects. This paper investigates the influence regularity on different decomposition by-products of air such as Ozone, NOx, NO2and NO of the commonly metal materials used in high voltage equipments such as copper (Cu) and stainless steel(SS). Firstly, an experimental platform is established to simulate air decomposition by-products under a protrusion as well surface discharge defects and the influence regularities of Cu and SS on the concentration and generation rate of air by-products are obtained. Results show that Cu produces more air decomposition by-products as compared with SS in all defects under study. Secondly, an empirical mathematical relationship is proposed for rate of generation of air by-products under these partial discharge defects. This study leads to indirect way for online fault diagnostics in air.
{"title":"The Influence of Metalic Protrusion and Surface Discharge Faults on Air Decomposition By-Products Under Different Electrode Materials","authors":"H. Javed, Kang Li, Guoqiang Zhang, A. Plesca","doi":"10.1109/EIC.2018.8480891","DOIUrl":"https://doi.org/10.1109/EIC.2018.8480891","url":null,"abstract":"Air decomposition products can be used to detect different partial discharge (PD) defects but the metal materials in a PD area can significantly affect air decomposition by-products characteristics. Disregarding the effect of metal materials on such characteristics inevitably result in certain errors when using them to diagnose the metallic protrusion and surface discharge defects. This paper investigates the influence regularity on different decomposition by-products of air such as Ozone, NOx, NO2and NO of the commonly metal materials used in high voltage equipments such as copper (Cu) and stainless steel(SS). Firstly, an experimental platform is established to simulate air decomposition by-products under a protrusion as well surface discharge defects and the influence regularities of Cu and SS on the concentration and generation rate of air by-products are obtained. Results show that Cu produces more air decomposition by-products as compared with SS in all defects under study. Secondly, an empirical mathematical relationship is proposed for rate of generation of air by-products under these partial discharge defects. This study leads to indirect way for online fault diagnostics in air.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133962964","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 : 2018-06-01DOI: 10.1109/EIC.2018.8481105
A. Lewarkar, D. Bergsma, Johan Conradie, Satish Buddhawar
Cross Linked Polyethylene (XLPE) and Paper Insulated Lead Covered Cables (PILC) are widely used for distribution and transmission of electrical power. For making long distance cable connection, a cable joint is used for connecting two smaller cables. During the installation of such cable joint, external layers around the conductor of cables are stripped, which leads to concentration of electric field at the terminated outer semi conductive layer of the cable. There are various types of field grading options available, such as electrode field grading, epsilon field grading and resistive field grading that are used for controlling this concentration of electric field. In this paper, application of these types of field grading are studied on XLPE and PILC cables. This study was performed with the help of Finite Element Analysis software and High Voltage AC short time test on cables with different types of field grading types installed on them. At the end of this study, it was concluded that electrode grading performs better in comparison with other field grading options, as it results in minimum tangential electric field at surface of cable insulation.
{"title":"Study of Electric Field Grading Types on Medium Voltage Polymeric and Paper Insulated Cables","authors":"A. Lewarkar, D. Bergsma, Johan Conradie, Satish Buddhawar","doi":"10.1109/EIC.2018.8481105","DOIUrl":"https://doi.org/10.1109/EIC.2018.8481105","url":null,"abstract":"Cross Linked Polyethylene (XLPE) and Paper Insulated Lead Covered Cables (PILC) are widely used for distribution and transmission of electrical power. For making long distance cable connection, a cable joint is used for connecting two smaller cables. During the installation of such cable joint, external layers around the conductor of cables are stripped, which leads to concentration of electric field at the terminated outer semi conductive layer of the cable. There are various types of field grading options available, such as electrode field grading, epsilon field grading and resistive field grading that are used for controlling this concentration of electric field. In this paper, application of these types of field grading are studied on XLPE and PILC cables. This study was performed with the help of Finite Element Analysis software and High Voltage AC short time test on cables with different types of field grading types installed on them. At the end of this study, it was concluded that electrode grading performs better in comparison with other field grading options, as it results in minimum tangential electric field at surface of cable insulation.","PeriodicalId":184139,"journal":{"name":"2018 IEEE Electrical Insulation Conference (EIC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122867670","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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