Pub Date : 2019-06-01DOI: 10.1109/EIC43217.2019.9046533
Aws Al-Taie, Chanyeop Park, P. Cheetham, C. Kim, L. Graber, S. Pamidi
A new method to represent Paschen's law to estimate the dielectric strength of gaseous media over a wide range of temperatures is presented. In the new representation the breakdown strength is a function of the product of gas mass density and gap distance between the electrodes (p.d) rather than the product of gas pressure and gap distance (p.d) used in the standard form. The necessity of the new representation is articulated based on the fact that the dielectric strength of a gaseous medium scales with density, and the density depends not on the pressure alone, but also on the temperature. Representing Paschen's law using mass density accounts for the dependence of dielectric strength on the temperature and pressure of the gas, and facilitates its application for estimations of dielectric strength of gas media at any temperature and pressure. The application and the necessity of the new representation is demonstrated using the test case of gas cooled high temperature superconducting power devices that operate at variable temperature and pressure.
{"title":"A New Representation of Paschen's Law Suitable for Variable Temperature Power Applications","authors":"Aws Al-Taie, Chanyeop Park, P. Cheetham, C. Kim, L. Graber, S. Pamidi","doi":"10.1109/EIC43217.2019.9046533","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046533","url":null,"abstract":"A new method to represent Paschen's law to estimate the dielectric strength of gaseous media over a wide range of temperatures is presented. In the new representation the breakdown strength is a function of the product of gas mass density and gap distance between the electrodes (p.d) rather than the product of gas pressure and gap distance (p.d) used in the standard form. The necessity of the new representation is articulated based on the fact that the dielectric strength of a gaseous medium scales with density, and the density depends not on the pressure alone, but also on the temperature. Representing Paschen's law using mass density accounts for the dependence of dielectric strength on the temperature and pressure of the gas, and facilitates its application for estimations of dielectric strength of gas media at any temperature and pressure. The application and the necessity of the new representation is demonstrated using the test case of gas cooled high temperature superconducting power devices that operate at variable temperature and pressure.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131668646","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046518
Ziqing Guo, Qizheng Ye, Yuwei Wang
In terms of optical image digital processing of gas discharge, the morphological research is mainly engaged in the image of UV, which has relatively few studies on discharge state by using grayscale texture information of visible images. Thanks to the progress of photoelectric detecting technique, the visible image contains more abundant space structure information, which makes it possible to detect the characteristic of grayscale texture information. In this paper, the 50Hz AC high voltage power source was applied to the 15mm needle-plane gap under room temperature and atmospheric pressure. The discharge images in the time scale of seconds were obtained by a high resolution digital camera. We introduce the research method of gray-level co-occurrence matrix into the corona discharge image processing. Contrast, entropy, correlation and the expected value ratio of vertical (90°) and horizontal (0°) directions are used to describe the state of corona development. The calculation results show that the contrast and entropy can effectively reflect the corona pre-breakdown state, and the correlation can effectively reflect the initial state. The expected value ratio can effectively reflect the process of growth, suppression, and gap-penetration of the discharge in the positive half cycle, which has a good correlation with the oscilloscope electrical signals. The method allows us to take advantage of visible light images to study the stages of AC corona, which provides a new method of low temperature plasma diagnostics.
{"title":"Research on Stages of AC corona discharge Based on Visible Digital Images Gray-level Co-occurrence Matrix","authors":"Ziqing Guo, Qizheng Ye, Yuwei Wang","doi":"10.1109/EIC43217.2019.9046518","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046518","url":null,"abstract":"In terms of optical image digital processing of gas discharge, the morphological research is mainly engaged in the image of UV, which has relatively few studies on discharge state by using grayscale texture information of visible images. Thanks to the progress of photoelectric detecting technique, the visible image contains more abundant space structure information, which makes it possible to detect the characteristic of grayscale texture information. In this paper, the 50Hz AC high voltage power source was applied to the 15mm needle-plane gap under room temperature and atmospheric pressure. The discharge images in the time scale of seconds were obtained by a high resolution digital camera. We introduce the research method of gray-level co-occurrence matrix into the corona discharge image processing. Contrast, entropy, correlation and the expected value ratio of vertical (90°) and horizontal (0°) directions are used to describe the state of corona development. The calculation results show that the contrast and entropy can effectively reflect the corona pre-breakdown state, and the correlation can effectively reflect the initial state. The expected value ratio can effectively reflect the process of growth, suppression, and gap-penetration of the discharge in the positive half cycle, which has a good correlation with the oscilloscope electrical signals. The method allows us to take advantage of visible light images to study the stages of AC corona, which provides a new method of low temperature plasma diagnostics.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131697814","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046579
S. Morsalin, B. Phung, M. Danikas
As a promising alternative to conventional high voltage AC testing at PF (power frequency 50/60 Hz), VLF (very-low-frequency, typically 0.1 Hz) testing is nowadays used in practice. The increasing application of VLF testing for condition assessment of power apparatus necessitates understanding the partial discharge (PD) behaviors at this frequency. In this paper, the influence of cavity geometry on PD activities is investigated. A comparative experimental study is carried out with PF and VLF voltage excitations for different void structures (cylindrical, block, prism). Measurement results are presented with phase-resolved discharge patterns and integrated parameters such as average void discharge, repetition rates, etc. Under the same applied overstress relative to inception voltage, measurement results show that void discharges are strongly dependent on the cavity geometry as well as excitation frequency. With increasing cavity volume, PDs are more likely to occur and in particular, VLF excitation yields lower discharge magnitude, repetition rate and the phase range of occurrence.
{"title":"Influence of Cavity Geometry on Partial Discharge Measurement at Very Low Frequency","authors":"S. Morsalin, B. Phung, M. Danikas","doi":"10.1109/EIC43217.2019.9046579","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046579","url":null,"abstract":"As a promising alternative to conventional high voltage AC testing at PF (power frequency 50/60 Hz), VLF (very-low-frequency, typically 0.1 Hz) testing is nowadays used in practice. The increasing application of VLF testing for condition assessment of power apparatus necessitates understanding the partial discharge (PD) behaviors at this frequency. In this paper, the influence of cavity geometry on PD activities is investigated. A comparative experimental study is carried out with PF and VLF voltage excitations for different void structures (cylindrical, block, prism). Measurement results are presented with phase-resolved discharge patterns and integrated parameters such as average void discharge, repetition rates, etc. Under the same applied overstress relative to inception voltage, measurement results show that void discharges are strongly dependent on the cavity geometry as well as excitation frequency. With increasing cavity volume, PDs are more likely to occur and in particular, VLF excitation yields lower discharge magnitude, repetition rate and the phase range of occurrence.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133839112","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046541
M. Borghei, M. Ghassemi
This paper develops a revolutionary design for transmission lines by shifting phase configurations and sub-conductors into unconventional arrangements that are geometrically optimized, leading to very high surge impedance loading (HSIL) and very low corridor width (CW) (ultra SIL/CW).
{"title":"Geometrically Optimized Phase Configurations and Sub-conductors in the Bundle for Power Transmission Efficiency","authors":"M. Borghei, M. Ghassemi","doi":"10.1109/EIC43217.2019.9046541","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046541","url":null,"abstract":"This paper develops a revolutionary design for transmission lines by shifting phase configurations and sub-conductors into unconventional arrangements that are geometrically optimized, leading to very high surge impedance loading (HSIL) and very low corridor width (CW) (ultra SIL/CW).","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126621326","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046633
Z. Ahmed, Mojtaba Rostaghi Chalaki, Kamran Yousfpour, J. Klüss
A multivariate time series analysis was performed for a system of several PD response variables, i.e. average charge, number of discharge pulses, average charge current, and largest repetitive discharge magnitude over the data acquisition period. Experimental lifelong PD data obtained from cable samples subjected to accelerated degradation was used to study the dynamic trends and relationships among those aforementioned response variables. Stochastically formulated cointegrated variables recognized by those tests can be combined to form new stationary variables to estimate the parameters for the Vector Auto Regression (VAR) and Vector-Error Correction (VEC) models. The validity of both models was evaluated by generating Monte Carlo and Minimum Mean Squared Error (MMSE) simulated forecasts. True observed data and forecasted data mean values lie within the 95th percentile confidence interval responses which demonstrates the soundness and accuracy of both models. A life-predicting model based on the cointegrating relations between the multiple response variables, correlated with experimentally evaluated time-to-breakdown values, can be used to set an emergent alarming trigger and as a step towards establishing long-term continuous monitoring of partial discharge activity.
{"title":"Multivariate Time Series Modeling for Long Term Partial Discharge Measurements in Medium Voltage XLPE Cables","authors":"Z. Ahmed, Mojtaba Rostaghi Chalaki, Kamran Yousfpour, J. Klüss","doi":"10.1109/EIC43217.2019.9046633","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046633","url":null,"abstract":"A multivariate time series analysis was performed for a system of several PD response variables, i.e. average charge, number of discharge pulses, average charge current, and largest repetitive discharge magnitude over the data acquisition period. Experimental lifelong PD data obtained from cable samples subjected to accelerated degradation was used to study the dynamic trends and relationships among those aforementioned response variables. Stochastically formulated cointegrated variables recognized by those tests can be combined to form new stationary variables to estimate the parameters for the Vector Auto Regression (VAR) and Vector-Error Correction (VEC) models. The validity of both models was evaluated by generating Monte Carlo and Minimum Mean Squared Error (MMSE) simulated forecasts. True observed data and forecasted data mean values lie within the 95th percentile confidence interval responses which demonstrates the soundness and accuracy of both models. A life-predicting model based on the cointegrating relations between the multiple response variables, correlated with experimentally evaluated time-to-breakdown values, can be used to set an emergent alarming trigger and as a step towards establishing long-term continuous monitoring of partial discharge activity.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121821797","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046546
D. Szabó, G. Göcsei, B. Németh, C. Richárd, L. Rácz
High voltage live-line maintenance (LLM) became a decisive working method in Hungary in the 1960s. Most of the LLM techniques and equipment - which are still in operation nowadays - were developed by Dr. Béla Csikós, who was one of the pioneers of high voltage live-line work. In those days the live maintainability of the power lines was a significant aspect during the design of towers and insulator strings. Contrarily, structures change year-by-year, especially regarding the insulators. Therefore, live working methods also shall be developed. Nowadays, new types of tower structures and insulator strings are used with reduced distances, which also means reduced clearance between the different potentials in the arrangement. During barehand live working method, the lineman has to keep the adequate distances from different potentials of power lines. Moreover, there is no uniform standard and international practice for the regulation of safety clearances. New type of mounting chair made of non-conductive material is suitable for approaching the insulator strings and their fittings safely, as the air gap between the conductive parts does not shorten. The aim of this paper is to investigate the usability of non-conductive mounting chair and the regulation of phase-to-ground clearances during insulator replacement technology, in case of several tower types and insulator types used in the Hungarian transmission grid. Another purpose of this article is to examine the possibility of reducing minimal approach distances, such as by the application of portable protective air gap (PPAG).
{"title":"Examination of clearances during high voltage live-line working","authors":"D. Szabó, G. Göcsei, B. Németh, C. Richárd, L. Rácz","doi":"10.1109/EIC43217.2019.9046546","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046546","url":null,"abstract":"High voltage live-line maintenance (LLM) became a decisive working method in Hungary in the 1960s. Most of the LLM techniques and equipment - which are still in operation nowadays - were developed by Dr. Béla Csikós, who was one of the pioneers of high voltage live-line work. In those days the live maintainability of the power lines was a significant aspect during the design of towers and insulator strings. Contrarily, structures change year-by-year, especially regarding the insulators. Therefore, live working methods also shall be developed. Nowadays, new types of tower structures and insulator strings are used with reduced distances, which also means reduced clearance between the different potentials in the arrangement. During barehand live working method, the lineman has to keep the adequate distances from different potentials of power lines. Moreover, there is no uniform standard and international practice for the regulation of safety clearances. New type of mounting chair made of non-conductive material is suitable for approaching the insulator strings and their fittings safely, as the air gap between the conductive parts does not shorten. The aim of this paper is to investigate the usability of non-conductive mounting chair and the regulation of phase-to-ground clearances during insulator replacement technology, in case of several tower types and insulator types used in the Hungarian transmission grid. Another purpose of this article is to examine the possibility of reducing minimal approach distances, such as by the application of portable protective air gap (PPAG).","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115908450","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046584
Sang Bin Lee, Alireza Naeini, S. Jayaram, G. Stone, M. Šašić
IEC 60034-18-41 has been developed as a standard acceptance test to ensure partial discharge (PD)-free operation for improving the reliability of low voltage (LV) variable frequency drive (VFD) motors. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined magnitude and risetime, the information on where PD activity is occurring in the stator insulation is not clearly given. In this paper, a method based on variable risetime surge voltage testing is proposed for identifying the component of the stator insulation system where PD occurs in LV random wound motor stators (turn, phase, or ground insulation). This information can be used for increasing the PD inception voltage for improving the reliability of the motor through insulation system design/manufacturing. The test is implemented with a 4.5 kV variable risetime surge generator prototype. 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.
{"title":"Impulse Voltage-based Test Method for Identifying the Stator Insulation Component with PD Activity for Low Voltage AC Motors","authors":"Sang Bin Lee, Alireza Naeini, S. Jayaram, G. Stone, M. Šašić","doi":"10.1109/EIC43217.2019.9046584","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046584","url":null,"abstract":"IEC 60034-18-41 has been developed as a standard acceptance test to ensure partial discharge (PD)-free operation for improving the reliability of low voltage (LV) variable frequency drive (VFD) motors. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined magnitude and risetime, the information on where PD activity is occurring in the stator insulation is not clearly given. In this paper, a method based on variable risetime surge voltage testing is proposed for identifying the component of the stator insulation system where PD occurs in LV random wound motor stators (turn, phase, or ground insulation). This information can be used for increasing the PD inception voltage for improving the reliability of the motor through insulation system design/manufacturing. The test is implemented with a 4.5 kV variable risetime surge generator prototype. 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"11 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115969966","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046550
J. Aizpurua, B. Stewart, S. Mcarthur, Nitin Jaiware, Martin Kearns
Power cables are critical assets for the safe and cost effective operation of the power grid. However, the health assessment of cables is intricate due to its various degradation mechanisms. Motivated by the generation of a consistent cable health index metric, this paper presents a novel hybrid cable health index approach which combines data-driven and physics-of-failure degradation models. Data-driven models are focused on partial discharge tests and physics-of-failure models are focused on cable lifetime estimation based on thermal and electrical stresses. The combination of these models offers an enhanced cable health indicator which supports engineers in the power cable maintenance related decision-making processes.
{"title":"Towards a Hybrid Power Cable Health Index for Medium Voltage Power Cable Condition Monitoring","authors":"J. Aizpurua, B. Stewart, S. Mcarthur, Nitin Jaiware, Martin Kearns","doi":"10.1109/EIC43217.2019.9046550","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046550","url":null,"abstract":"Power cables are critical assets for the safe and cost effective operation of the power grid. However, the health assessment of cables is intricate due to its various degradation mechanisms. Motivated by the generation of a consistent cable health index metric, this paper presents a novel hybrid cable health index approach which combines data-driven and physics-of-failure degradation models. Data-driven models are focused on partial discharge tests and physics-of-failure models are focused on cable lifetime estimation based on thermal and electrical stresses. The combination of these models offers an enhanced cable health indicator which supports engineers in the power cable maintenance related decision-making processes.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116749939","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}
As mechanical vibration usually exists in reactors, its influence on partial discharge (PD) needs to be studied so as to provide new clues for further understanding of the abnormal aging process of the insulation material as well as improve the reliability of on-line PD monitoring method. In this paper, PD characteristics of epoxy resin under different vibration conditions are investigated. Research shows that vibration could promote or suppress the occurrence and development of discharge by changing the state of field emission, the dissipation of charges and the conduction current, obvious variation was observed with the changing vibration amplitude. Moreover there are differences between the variation trend of the PD magnitude at different vibration frequency, which is due to the relative displacement of the electric field distribution and space charge, and the promotion or suppression of surface charge dissipation.
{"title":"Effect of Vibration on Surface Discharge of Epoxy Resin","authors":"Siyun Wang, M. Ren, Changjie Xia, Tianxin Zhuang, Shujing Yang, Xiaojing Dou","doi":"10.1109/EIC43217.2019.9046574","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046574","url":null,"abstract":"As mechanical vibration usually exists in reactors, its influence on partial discharge (PD) needs to be studied so as to provide new clues for further understanding of the abnormal aging process of the insulation material as well as improve the reliability of on-line PD monitoring method. In this paper, PD characteristics of epoxy resin under different vibration conditions are investigated. Research shows that vibration could promote or suppress the occurrence and development of discharge by changing the state of field emission, the dissipation of charges and the conduction current, obvious variation was observed with the changing vibration amplitude. Moreover there are differences between the variation trend of the PD magnitude at different vibration frequency, which is due to the relative displacement of the electric field distribution and space charge, and the promotion or suppression of surface charge dissipation.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115743324","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 : 2019-06-01DOI: 10.1109/EIC43217.2019.9046542
P. Cheetham, Chanyeop Park, S. Satyanarayana, C. Kim, L. Graber, S. Pamidi
The concept of gas-insulated high temperature superconducting (HTS) coaxial dipole for power distribution systems in medium voltage direct current (MVDC) architectures is explored. Finite element analysis of electromagnetic characteristics of the preliminary designs of the HTS coaxial dipole show promise in terms of its ability to eliminate electromagnetic interference with other devices by eliminating the magnetic field leakage external to the dipole. The coaxial dipole allows effective cancelation of self-magnetic field of the individual poles carrying several kA current thus allowing higher current carrying capacity of the cable. Design options for arranging the HTS conductors and insulator spacers is presented. Outstanding challenges to realize practical coaxial dipole configurations of HTS power distribution systems are discussed.
{"title":"Gas-Insulated High Temperature Superconducting Coaxial Dipole for MVDC Power Systems","authors":"P. Cheetham, Chanyeop Park, S. Satyanarayana, C. Kim, L. Graber, S. Pamidi","doi":"10.1109/EIC43217.2019.9046542","DOIUrl":"https://doi.org/10.1109/EIC43217.2019.9046542","url":null,"abstract":"The concept of gas-insulated high temperature superconducting (HTS) coaxial dipole for power distribution systems in medium voltage direct current (MVDC) architectures is explored. Finite element analysis of electromagnetic characteristics of the preliminary designs of the HTS coaxial dipole show promise in terms of its ability to eliminate electromagnetic interference with other devices by eliminating the magnetic field leakage external to the dipole. The coaxial dipole allows effective cancelation of self-magnetic field of the individual poles carrying several kA current thus allowing higher current carrying capacity of the cable. Design options for arranging the HTS conductors and insulator spacers is presented. Outstanding challenges to realize practical coaxial dipole configurations of HTS power distribution systems are discussed.","PeriodicalId":340602,"journal":{"name":"2019 IEEE Electrical Insulation Conference (EIC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129513072","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：