Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705348
H. Aoki, Shenzhan Ye, Kosuke Sato, H. Miyake, Yasuhiro Tanaka
The spatial resolution of space charge distribution measurement at high temperature was tried to be improved using a modified pulsed electro-acoustic (PEA) system. It is important to understand charge accumulation characteristic between insulating layers to develop actual power electric devices, at high temperatures. However, since the spatial resolution of the conventional PEA space charge measurement system is poor at high temperatures, it is necessary to improve the spatial resolution. Therefore, improving it by making a thin P(VDF-TrFE) film and applying it to a modified PEA system was carried out. To show the improvement effect, measuring the interface charge accumulation between the dried and humidified PI films was carried out.
{"title":"Improvement of Spatial Resolution for Space Charge Distribution Measurement at High Temperature Using Pulsed Electro-acoustic Method","authors":"H. Aoki, Shenzhan Ye, Kosuke Sato, H. Miyake, Yasuhiro Tanaka","doi":"10.1109/CEIDP50766.2021.9705348","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705348","url":null,"abstract":"The spatial resolution of space charge distribution measurement at high temperature was tried to be improved using a modified pulsed electro-acoustic (PEA) system. It is important to understand charge accumulation characteristic between insulating layers to develop actual power electric devices, at high temperatures. However, since the spatial resolution of the conventional PEA space charge measurement system is poor at high temperatures, it is necessary to improve the spatial resolution. Therefore, improving it by making a thin P(VDF-TrFE) film and applying it to a modified PEA system was carried out. To show the improvement effect, measuring the interface charge accumulation between the dried and humidified PI films was carried out.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"56 1","pages":"494-497"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80068529","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705429
J. Laninga
Dielectric insulating ropes are presently being utilized in industry for live working energized equipment that do not provide equal performance dry and wet. Extruded thermoplastic jacket rope is compared to fiber rope with overlay finish and the enhancement in safety and dielectric performance is demonstrated by the reduction of flashover risks, reduced leakage currents, avoidance of breaking strength loss and the ability to confirm and maintain the insulating properties.
{"title":"Comparative Analysis of Dielectric Insulating Ropes for Live Working","authors":"J. Laninga","doi":"10.1109/CEIDP50766.2021.9705429","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705429","url":null,"abstract":"Dielectric insulating ropes are presently being utilized in industry for live working energized equipment that do not provide equal performance dry and wet. Extruded thermoplastic jacket rope is compared to fiber rope with overlay finish and the enhancement in safety and dielectric performance is demonstrated by the reduction of flashover risks, reduced leakage currents, avoidance of breaking strength loss and the ability to confirm and maintain the insulating properties.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"3 1","pages":"426-429"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73145027","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}
Local overstress in composite insulators is a critical problem that affects insulation performance of high voltage transmission system. In addition to traditional methods, applying field grading materials (FGMs) with nonlinear electrical properties is also a promising method. To self-adaptively optimize the electric field strength distribution, electrical and structural parameters of FGMs need to be coordinated. Using finite element modeling, we examine the influence of FGMs with different electrical and structural parameters on field strength distribution of a 220kV AC transmission line epoxy composite insulator. The results indicate that the increase of non-linear coefficient has saturation effect on the reduction of local concentrated electric field strength. Non-linear coefficient of 10-20 is efficient for field grading. The coordination of threshold field strength and length of FGM layers is essential for the improvement of field strength distribution. And the increase of thickness of FGM layers also benefits field grading.
{"title":"Simulation Research on Coordination of Electrical and Structural Parameters in Composite Insulator with Field Grading Materials","authors":"Yan-Yan Gong, Jiale Wu, Xupeng Song, Wei Yang, Kun Wang, X. Bian","doi":"10.1109/CEIDP50766.2021.9705389","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705389","url":null,"abstract":"Local overstress in composite insulators is a critical problem that affects insulation performance of high voltage transmission system. In addition to traditional methods, applying field grading materials (FGMs) with nonlinear electrical properties is also a promising method. To self-adaptively optimize the electric field strength distribution, electrical and structural parameters of FGMs need to be coordinated. Using finite element modeling, we examine the influence of FGMs with different electrical and structural parameters on field strength distribution of a 220kV AC transmission line epoxy composite insulator. The results indicate that the increase of non-linear coefficient has saturation effect on the reduction of local concentrated electric field strength. Non-linear coefficient of 10-20 is efficient for field grading. The coordination of threshold field strength and length of FGM layers is essential for the improvement of field strength distribution. And the increase of thickness of FGM layers also benefits field grading.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"6 1","pages":"655-658"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74943760","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705448
K. Gao, Hua Huang, Tianyi Wu, Fuchun Cheng, Gangjie Zhou, Jinyi Deng, Lijun Jin
Due to the fully enclosed characteristics of GIS equipment and its internal defects are difficult to detect, overheating and partial discharge is a common defect within the GIS. If hidden defects cannot be detected and eliminated in time, insulation equipment will accelerate defect degradation, resulting in insulation breakdown or surface flashover in GIS equipment. Aiming at the two typical defects of GIS internal electrical contact and point partial discharge, the external transmission mechanism of internal defects was studied separately, and the detection method of defect features was explored in this paper. In the process, using improved Kalman filtering algorithm to denoise the external thermal and acoustic signal features of equipment defects, and using support vector machine algorithm to predict the internal fault point features of the equipment from external information. An information fusion algorithm based on improved D-S evidence theory was investigated to synthesize thermal and acoustic signal features to discriminate the defect status level of equipment. Finally, a GIS single branch bus defect simulation experiment platform was built to verify the effectiveness of the thermal-acoustic information fusion algorithm proposed. After fusing the defect information features of six detections, the algorithm can accurately discern the equipment defect type and status level.
{"title":"Research on Thermal-Acoustic Fusion Diagnosis of GIS Equipment Defects Based on Improved D-S Evidence Theory","authors":"K. Gao, Hua Huang, Tianyi Wu, Fuchun Cheng, Gangjie Zhou, Jinyi Deng, Lijun Jin","doi":"10.1109/CEIDP50766.2021.9705448","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705448","url":null,"abstract":"Due to the fully enclosed characteristics of GIS equipment and its internal defects are difficult to detect, overheating and partial discharge is a common defect within the GIS. If hidden defects cannot be detected and eliminated in time, insulation equipment will accelerate defect degradation, resulting in insulation breakdown or surface flashover in GIS equipment. Aiming at the two typical defects of GIS internal electrical contact and point partial discharge, the external transmission mechanism of internal defects was studied separately, and the detection method of defect features was explored in this paper. In the process, using improved Kalman filtering algorithm to denoise the external thermal and acoustic signal features of equipment defects, and using support vector machine algorithm to predict the internal fault point features of the equipment from external information. An information fusion algorithm based on improved D-S evidence theory was investigated to synthesize thermal and acoustic signal features to discriminate the defect status level of equipment. Finally, a GIS single branch bus defect simulation experiment platform was built to verify the effectiveness of the thermal-acoustic information fusion algorithm proposed. After fusing the defect information features of six detections, the algorithm can accurately discern the equipment defect type and status level.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"63 1","pages":"594-597"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75127680","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705404
O. Vryonis, P. Marx, S. Hirner, F. Wiesbrock, T. Andritsch
Literature on nanodielectrics has shown inconsistent behavior with nominally identical material systems (polymer/filler combinations), sometimes even from the same research groups. This paper compares four different commercial hexagonal boron nitride (hBN) products in two different polymer systems (epoxy resins and silicone rubbers) and compares their dielectric response. It is demonstrated that the dielectric properties of composites containing hBN are affected by the production steps, respectively the supplier of the nanofiller; notably, this effect varies depending on the host polymer, thus trends cannot be translated from material system to the next, even for the filler from the same supplier. Experimental evidence shows that equivalent types of fillers can lead to variations in dielectric losses, both in silicone-based and epoxy-based composites.
{"title":"Investigation of Different Commercial Boron Nitride Grades and their Effect on Loss Spectra in Epoxy Resins and Silicone Rubbers","authors":"O. Vryonis, P. Marx, S. Hirner, F. Wiesbrock, T. Andritsch","doi":"10.1109/CEIDP50766.2021.9705404","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705404","url":null,"abstract":"Literature on nanodielectrics has shown inconsistent behavior with nominally identical material systems (polymer/filler combinations), sometimes even from the same research groups. This paper compares four different commercial hexagonal boron nitride (hBN) products in two different polymer systems (epoxy resins and silicone rubbers) and compares their dielectric response. It is demonstrated that the dielectric properties of composites containing hBN are affected by the production steps, respectively the supplier of the nanofiller; notably, this effect varies depending on the host polymer, thus trends cannot be translated from material system to the next, even for the filler from the same supplier. Experimental evidence shows that equivalent types of fillers can lead to variations in dielectric losses, both in silicone-based and epoxy-based composites.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"11 1","pages":"430-433"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75393754","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705383
A. Andersen, Wousik Kim, J. Chinn
Electrostatic discharge or ESD can pose a significant risk to spacecraft in many space environments. Laboratory electron beam facilities can be used to test the performance of candidate spacecraft dielectrics. However, limited resources necessitate accelerated testing. The aim of this work is the development of a criterion for determining when an ESD test has run for sufficient time to capture representative ESD behavior. Such a criterion has the potential of saving hours of personnel and facility time per test. A comparison of the distributions of ESD event magnitudes from consecutive segments of an ESD test can be used to determine when the test has reached a quasi-steady state. Once this quasi-steady state has been observed the test may be ended without a significant reduction in test fidelity.
{"title":"A Heuristic Method for Determining the Necessary Time Duration of Electron Beam ESD Tests of Spacecraft Dielectrics","authors":"A. Andersen, Wousik Kim, J. Chinn","doi":"10.1109/CEIDP50766.2021.9705383","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705383","url":null,"abstract":"Electrostatic discharge or ESD can pose a significant risk to spacecraft in many space environments. Laboratory electron beam facilities can be used to test the performance of candidate spacecraft dielectrics. However, limited resources necessitate accelerated testing. The aim of this work is the development of a criterion for determining when an ESD test has run for sufficient time to capture representative ESD behavior. Such a criterion has the potential of saving hours of personnel and facility time per test. A comparison of the distributions of ESD event magnitudes from consecutive segments of an ESD test can be used to determine when the test has reached a quasi-steady state. Once this quasi-steady state has been observed the test may be ended without a significant reduction in test fidelity.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"1 1","pages":"211-214"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75488313","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705447
Imadeddine Benfridja, S. Diaham, B. Stenson, Baoxing Chen, T. Kennedy
Graphene-based polymer nanocomposites have attracted widespread industrial interest as the electrical conductivity of the material can be precisely controlled due to the unique conduction properties of graphene. In this paper, we show the effect of exfoliation methods and dispersion time on the particle dispersion, aggregate size and the overall electrical conduction of polyimide/graphene nanocomposites. A set of polyimide films with a varying graphene nanoflake content were prepared by thermal imidization and electrically characterised to assess the impact of the composition of the nanocomposite on the electrical percolation threshold. Three dispersion techniques were investigated (i.e. high shear mixing, ultrasonication probe and planetary mixing) and it was found that the size of the graphene nanoflakes was reduced by increasing the dispersion time in each case. The highest dispersion quality was obtained using the high shear mixing technique which yielded an electrical percolation threshold of 0.03 wt%.
{"title":"The Effect of Graphene Dispersion on the Electrical Properties of Polyimide Nanocomposites","authors":"Imadeddine Benfridja, S. Diaham, B. Stenson, Baoxing Chen, T. Kennedy","doi":"10.1109/CEIDP50766.2021.9705447","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705447","url":null,"abstract":"Graphene-based polymer nanocomposites have attracted widespread industrial interest as the electrical conductivity of the material can be precisely controlled due to the unique conduction properties of graphene. In this paper, we show the effect of exfoliation methods and dispersion time on the particle dispersion, aggregate size and the overall electrical conduction of polyimide/graphene nanocomposites. A set of polyimide films with a varying graphene nanoflake content were prepared by thermal imidization and electrically characterised to assess the impact of the composition of the nanocomposite on the electrical percolation threshold. Three dispersion techniques were investigated (i.e. high shear mixing, ultrasonication probe and planetary mixing) and it was found that the size of the graphene nanoflakes was reduced by increasing the dispersion time in each case. The highest dispersion quality was obtained using the high shear mixing technique which yielded an electrical percolation threshold of 0.03 wt%.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"210 1","pages":"671-674"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76133585","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705449
F. Haque, Omar Faruqe, Chanyeop Park
Partial discharge (PD), which causes accelerated dielectric material aging and device failure, has been a chronic dielectric challenge in medium to high voltage applications. Recently, electrets that emit electric fields were reported as a promising solution to the complete mitigation of PD by neutralizing the locally enhanced electric fields. Electrets fabricated at elevated temperature based on the widely used triode corona method allow the charged particles to be trapped in the bulk of the dielectric material, which increases the stability of the electrets. In this study, electrets are fabricated under various temperatures based on the triode-corona charging method with thin polyvinylidene fluoride (PVDF) films, and their PD mitigation performances are experimentally compared by conducting PD measurements. The stable charge density trapped in the bulk of the electrets fabricated at elevated temperature allows the electret-based PD approach to be a promising dielectric solution.
{"title":"Electret Fabrication Under Various Temperatures and Partial Discharge Mitigation Performance","authors":"F. Haque, Omar Faruqe, Chanyeop Park","doi":"10.1109/CEIDP50766.2021.9705449","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705449","url":null,"abstract":"Partial discharge (PD), which causes accelerated dielectric material aging and device failure, has been a chronic dielectric challenge in medium to high voltage applications. Recently, electrets that emit electric fields were reported as a promising solution to the complete mitigation of PD by neutralizing the locally enhanced electric fields. Electrets fabricated at elevated temperature based on the widely used triode corona method allow the charged particles to be trapped in the bulk of the dielectric material, which increases the stability of the electrets. In this study, electrets are fabricated under various temperatures based on the triode-corona charging method with thin polyvinylidene fluoride (PVDF) films, and their PD mitigation performances are experimentally compared by conducting PD measurements. The stable charge density trapped in the bulk of the electrets fabricated at elevated temperature allows the electret-based PD approach to be a promising dielectric solution.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"26 1","pages":"175-178"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76226963","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705379
Wenqiang Gao, Yifei Wang, Capri A. Price, J. Ronzello, N. Uzelac, Yang Cao
As a promising SF6 alternative, C4F7N/CO2 gas mixture shows comparable insulating performance to SF6 with a much lower global warming potential (GWP). However, the compatibility of materials used in gas-insulated apparatus with this gas mixture has raised more concerns due to the lower inertness of the gas mixture. Among those materials, molecular sieves with a huge specific surface area require extra attention since the rate of a chemical reaction can be greatly raised by increasing the surface area of a solid reactant. In this study, two kinds of molecular sieves, one made of zeolite, the other made of an organic compound, are selected for long-term thermal aging with the C4F7N/CO2 gas mixture. The aging process lasts for up to 9 months. The gas mixtures and products after aging are analyzed by gas chromatography-mass spectrometer (GC-MS), and dielectric strength tests. The results show that the zeolite molecular sieves exhibit incompatibility with the gas mixture. The catalytic effect brought up by the zeolite molecular sieves during aging is considered accountable for the incompatibility observed. For the organic molecular sieves, although they do not show incompatibility with the gas mixture, they may decompose during the long-term thermal aging.
{"title":"Compatibility of Molecular Sieves with C4F7N/CO2 Insulating Gas Mixture","authors":"Wenqiang Gao, Yifei Wang, Capri A. Price, J. Ronzello, N. Uzelac, Yang Cao","doi":"10.1109/CEIDP50766.2021.9705379","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705379","url":null,"abstract":"As a promising SF6 alternative, C4F7N/CO2 gas mixture shows comparable insulating performance to SF6 with a much lower global warming potential (GWP). However, the compatibility of materials used in gas-insulated apparatus with this gas mixture has raised more concerns due to the lower inertness of the gas mixture. Among those materials, molecular sieves with a huge specific surface area require extra attention since the rate of a chemical reaction can be greatly raised by increasing the surface area of a solid reactant. In this study, two kinds of molecular sieves, one made of zeolite, the other made of an organic compound, are selected for long-term thermal aging with the C4F7N/CO2 gas mixture. The aging process lasts for up to 9 months. The gas mixtures and products after aging are analyzed by gas chromatography-mass spectrometer (GC-MS), and dielectric strength tests. The results show that the zeolite molecular sieves exhibit incompatibility with the gas mixture. The catalytic effect brought up by the zeolite molecular sieves during aging is considered accountable for the incompatibility observed. For the organic molecular sieves, although they do not show incompatibility with the gas mixture, they may decompose during the long-term thermal aging.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"17 1","pages":"121-124"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90702583","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 : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705368
A. Alabani, P. Ranjan, J. Jiang, L. Chen, I. Cotton, V. Peesapati
There is a drive in the aviation industry towards more-electric aircraft (MEA) to replace fuel-driven airplane engines with more-electric power systems and improved efficiency. This requires a higher on-board electric power generation and a higher operating frequency to maintain a compact power system architecture. However, higher operating voltages in aeronautical environment, coupled with the need to maintain compact design, increase the risk of arcing. Arc faults are characterized by their high current magnitude which could lead to a significant release of energy that may damage the equipment as well as the adjacent components. The length of the electrode gap across which the arc ignites is one factor that determines the arc severity. This paper investigates the arc over a range of electrode gaps from 2.5 to 100 mm under atmospheric pressure and within a high-frequency circuit. For gaps ≤ 40 mm, the arc voltage increases as the arc cools down, whilst for gaps ≥ 50 mm the arc voltage decreases. The results conclude that longer gaps in this underdamped circuit setup exhibit a lower arc voltage with lower arc current, which is different to the arc behavior observed in shorter electrode gaps.
{"title":"Characterization of High Frequency Arcs under Atmospheric Pressure for Different Electrode Gaps","authors":"A. Alabani, P. Ranjan, J. Jiang, L. Chen, I. Cotton, V. Peesapati","doi":"10.1109/CEIDP50766.2021.9705368","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705368","url":null,"abstract":"There is a drive in the aviation industry towards more-electric aircraft (MEA) to replace fuel-driven airplane engines with more-electric power systems and improved efficiency. This requires a higher on-board electric power generation and a higher operating frequency to maintain a compact power system architecture. However, higher operating voltages in aeronautical environment, coupled with the need to maintain compact design, increase the risk of arcing. Arc faults are characterized by their high current magnitude which could lead to a significant release of energy that may damage the equipment as well as the adjacent components. The length of the electrode gap across which the arc ignites is one factor that determines the arc severity. This paper investigates the arc over a range of electrode gaps from 2.5 to 100 mm under atmospheric pressure and within a high-frequency circuit. For gaps ≤ 40 mm, the arc voltage increases as the arc cools down, whilst for gaps ≥ 50 mm the arc voltage decreases. The results conclude that longer gaps in this underdamped circuit setup exhibit a lower arc voltage with lower arc current, which is different to the arc behavior observed in shorter electrode gaps.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"13 1","pages":"159-162"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84862882","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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