Pub Date : 2008-10-31DOI: 10.1109/ISEIM.2008.4664454
Kai Wu, Yonghong Cheng, Xiaolin Chen
An interval percolation model was put forward to describe the ceramic-metal composite, in which the contact resistance of ceramic powder was reduced so that the bulk property of the ceramic could be recovered. Monte-Carlo simulation confirmed that the bulk property can be surely recovered in a cubic network if the fraction of conductive sites is in the range of 0.101 to 0.311. Experimental works also indicated that the bulk property of positive temperature coefficient (PTC) of BaTiO3 was recovered after the mixture of the BaTiO3 ceramic powder and silver ink was baked. Moreover, it was shown that the percolation threshold decreased with the increase of the size of ceramic particles, and the PTC bulk property appeared more obviously at higher electrical field. This may provide a new way for the polymer/ceramic composite.
{"title":"Ceramic-metal composite to recover the bulk property of ceramic powder","authors":"Kai Wu, Yonghong Cheng, Xiaolin Chen","doi":"10.1109/ISEIM.2008.4664454","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664454","url":null,"abstract":"An interval percolation model was put forward to describe the ceramic-metal composite, in which the contact resistance of ceramic powder was reduced so that the bulk property of the ceramic could be recovered. Monte-Carlo simulation confirmed that the bulk property can be surely recovered in a cubic network if the fraction of conductive sites is in the range of 0.101 to 0.311. Experimental works also indicated that the bulk property of positive temperature coefficient (PTC) of BaTiO3 was recovered after the mixture of the BaTiO3 ceramic powder and silver ink was baked. Moreover, it was shown that the percolation threshold decreased with the increase of the size of ceramic particles, and the PTC bulk property appeared more obviously at higher electrical field. This may provide a new way for the polymer/ceramic composite.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"449 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123041264","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664441
M. Fukuma, K. Ishiduki, S. Kotake
The semiconductor devices which used the electric field effect have the possibility to cause the malfunction due to the electrification. There is a case in which the anti-static additives (ASA) are used in order to avoid malfunction due to the electrification of the epoxy resin. In this report, the electrification phenomena under electric field stress in a high temperature (3-6 kV/mm, 100-155degC) in epoxy resin have been observed on the effect of ASA by using one-and two- dimensional space charge distribution measurement system. From the results of space charge measurement, it was found that the epoxy resin with ASA have made the following effect to the space charge formation by the high-temperature(100,155degC) and electric field charging (10 kV/1.5 mm, 6 kV/1.5 mm). It is considered that the ASA reduce the hetero electric field near the electrode interface; the appropriate quantity addition of the ASA to the epoxy resin is effective for relaxation of the electrification of the epoxy resin in the high temperature.
利用电场效应的半导体器件有可能因带电而引起故障。有一种情况是使用防静电添加剂(ASA)，以避免因环氧树脂带电而发生故障。本文利用一维和二维空间电荷分布测量系统，观察了环氧树脂在高温(3-6 kV/mm, 100-155℃)电场应力下的起电现象对ASA的影响。从空间电荷测量结果来看，添加ASA的环氧树脂在高温(100,155℃)和电场(10kv /1.5 mm, 6kv /1.5 mm)下对空间电荷的形成有如下影响:认为ASA降低了电极界面附近的异质电场;在环氧树脂中加入适量的ASA，可以有效地缓解环氧树脂在高温下的起电性。
{"title":"Electrification and space charge under electric stress in high temperature on epoxy resin","authors":"M. Fukuma, K. Ishiduki, S. Kotake","doi":"10.1109/ISEIM.2008.4664441","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664441","url":null,"abstract":"The semiconductor devices which used the electric field effect have the possibility to cause the malfunction due to the electrification. There is a case in which the anti-static additives (ASA) are used in order to avoid malfunction due to the electrification of the epoxy resin. In this report, the electrification phenomena under electric field stress in a high temperature (3-6 kV/mm, 100-155degC) in epoxy resin have been observed on the effect of ASA by using one-and two- dimensional space charge distribution measurement system. From the results of space charge measurement, it was found that the epoxy resin with ASA have made the following effect to the space charge formation by the high-temperature(100,155degC) and electric field charging (10 kV/1.5 mm, 6 kV/1.5 mm). It is considered that the ASA reduce the hetero electric field near the electrode interface; the appropriate quantity addition of the ASA to the epoxy resin is effective for relaxation of the electrification of the epoxy resin in the high temperature.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124410313","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664509
Y. Kurimoto, Y. Tashiro, Y. Murakami, H. Homma, M. Nagao
Silicone rubber used for polymeric insulators has good hydrophobicity and recovery characteristic of it. CIGRE WG D1.14 aims to establish new test procedure, dynamic drop test. That can evaluate the property of hydrophobicity loss of silicone rubber easily and with small systems. So, we clarified the relation between processes of hydrophobicity deterioration or loss and leakage current waveform in dynamic drop test. The hydrophobic conditions were classified into three categories. In the condition of keeping hydrophobicity, pulse discharges were repeatedly observed at the time when droplets ran down. As hydrophobicity deteriorated, small water droplets remained on the surface and many pulse discharges were observed when the droplets ran down. The tendency of the current ingredient of 60 Hz became more dominant and discharge light started to be observed continuously regardless of the timing of the droplets just before when hydrophobicity lost. Then it was considered that a thin moisture layer was formed on the surface, although only droplets were observed with the naked eye. Finally, the leakage current flowed continuously.
硅橡胶用于聚合物绝缘子具有良好的疏水性和回收性。CIGRE WG D1.14旨在建立新的测试程序——动态跌落测试。该方法可以方便地评价硅橡胶疏水性损失的性质，而且体系较小。从而明确了动态跌落试验中疏水性恶化或丧失过程与漏电流波形的关系。将疏水条件分为三类。在保持疏水性的条件下，反复观察液滴下落时的脉冲放电。随着疏水性的恶化，表面留下了小水滴，水滴下落时观察到许多脉冲放电。60 Hz电流成分的倾向变得更占优势，在疏水性丧失之前，无论液滴的时间如何，都开始连续观察到放电光。然后认为在表面形成了一层薄薄的水分层，尽管肉眼只观察到液滴。最后，泄漏电流连续流动。
{"title":"Variation of leakage current caused by hydrophobicity loss of silicone rubber in Dynamic Drop Test","authors":"Y. Kurimoto, Y. Tashiro, Y. Murakami, H. Homma, M. Nagao","doi":"10.1109/ISEIM.2008.4664509","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664509","url":null,"abstract":"Silicone rubber used for polymeric insulators has good hydrophobicity and recovery characteristic of it. CIGRE WG D1.14 aims to establish new test procedure, dynamic drop test. That can evaluate the property of hydrophobicity loss of silicone rubber easily and with small systems. So, we clarified the relation between processes of hydrophobicity deterioration or loss and leakage current waveform in dynamic drop test. The hydrophobic conditions were classified into three categories. In the condition of keeping hydrophobicity, pulse discharges were repeatedly observed at the time when droplets ran down. As hydrophobicity deteriorated, small water droplets remained on the surface and many pulse discharges were observed when the droplets ran down. The tendency of the current ingredient of 60 Hz became more dominant and discharge light started to be observed continuously regardless of the timing of the droplets just before when hydrophobicity lost. Then it was considered that a thin moisture layer was formed on the surface, although only droplets were observed with the naked eye. Finally, the leakage current flowed continuously.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127754464","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664516
T. Maezawa, Y. Kishi, Y. Tanaka, T. Takada, Y. Murata, Y. Sekiguchi, M. Goshowaki
Space charge behavior has been investigated in LDPE/MgO composite films including the different size of MgO particles with a diameter of several tens nm (nano) or a few mum (micro) when a dc high stress is applied to the sample at high temperature. It is believed that a positive packet-like charge is injected from the anode, and after that a negative packet charge is injected from the cathode. In the samples with relatively low content of MgO, the apparent velocity of positive packet-like charge in LDPE/MgO (nano) is faster than that in LDPE/MgO (micro) at a field of 150 kV/mm. Such generation of charges causes the enhancement of local electric field in the sample. However, almost no packet-like charge was observed in the sample with relatively high content of MgO irrespective of the filler size. It is considered that the addition of MgO filler to LDPE plays a role to reduce the enhancement of the electric field in the sample by suppression of both the positive and the negative charge injection into the sample.
{"title":"Dependence of filler size on space charge formation in LDPE/MgO under high electric field at high temperature","authors":"T. Maezawa, Y. Kishi, Y. Tanaka, T. Takada, Y. Murata, Y. Sekiguchi, M. Goshowaki","doi":"10.1109/ISEIM.2008.4664516","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664516","url":null,"abstract":"Space charge behavior has been investigated in LDPE/MgO composite films including the different size of MgO particles with a diameter of several tens nm (nano) or a few mum (micro) when a dc high stress is applied to the sample at high temperature. It is believed that a positive packet-like charge is injected from the anode, and after that a negative packet charge is injected from the cathode. In the samples with relatively low content of MgO, the apparent velocity of positive packet-like charge in LDPE/MgO (nano) is faster than that in LDPE/MgO (micro) at a field of 150 kV/mm. Such generation of charges causes the enhancement of local electric field in the sample. However, almost no packet-like charge was observed in the sample with relatively high content of MgO irrespective of the filler size. It is considered that the addition of MgO filler to LDPE plays a role to reduce the enhancement of the electric field in the sample by suppression of both the positive and the negative charge injection into the sample.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127880340","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664573
A. Xie, X.Q. Zheng, S.T. Li
The statistical initiation and propagation characteristics of electrical trees in cross linked polyethylene cables with different voltage rating from 66 kV to 500 kV were investigated, under a constant test voltage of 50 Hz/7 kV. It was found that the characteristics of electrical trees in inner layer of 66 kV cable insulation differed greatly from that in outer layer under the same test condition; however, few differences appeared as to 110 kV and above voltage rating cables. Through X-ray diffraction, differential scanning calorimetry and thermogravimetry method, it was suggested that besides extrusion process, molecular weight of base polymer material and its distribution are the prime factors deciding crystallization state, while the crystallization state and impurity content are responsible for the resistivity to electrical trees. Finally, dense and small spherulites, high crystallinity, high purity level of base polymer material and super-clean production processes are the aims to develop higher voltage rating cables.
{"title":"Electrical trees in inner and outer layer of different voltage rating XLPE cable insulation","authors":"A. Xie, X.Q. Zheng, S.T. Li","doi":"10.1109/ISEIM.2008.4664573","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664573","url":null,"abstract":"The statistical initiation and propagation characteristics of electrical trees in cross linked polyethylene cables with different voltage rating from 66 kV to 500 kV were investigated, under a constant test voltage of 50 Hz/7 kV. It was found that the characteristics of electrical trees in inner layer of 66 kV cable insulation differed greatly from that in outer layer under the same test condition; however, few differences appeared as to 110 kV and above voltage rating cables. Through X-ray diffraction, differential scanning calorimetry and thermogravimetry method, it was suggested that besides extrusion process, molecular weight of base polymer material and its distribution are the prime factors deciding crystallization state, while the crystallization state and impurity content are responsible for the resistivity to electrical trees. Finally, dense and small spherulites, high crystallinity, high purity level of base polymer material and super-clean production processes are the aims to develop higher voltage rating cables.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127183519","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664481
K. Abdolall, A. J. Vandermaar
This paper presents the results of an investigation into the effectiveness of the muWAVE VISION for the detection of internal hot spots in porcelain and polymer clad high voltage devices in the laboratory. The devices consisted of CVTpsilas, surge arresters, and CTpsilas. The results show The muWAVE VISION is effective in the detection of hot spots in CVTpsilas and there is strong correlation between changes in the electrical properties (power factor, partial discharge, and capacitance) and the increase in the apparent temperature at the hot spot location of the device under test as measured by the muWAVE VISION. Its effectiveness for the detection of hot spots in other devices requires more testing of such devices. Initial results are encouraging. The results are discussed in terms of the potential applications of the muWAVE VISION for different kinds of devices.
{"title":"Remote monitoring of the internal temperature of porcelain and polymer clad high voltage equipment","authors":"K. Abdolall, A. J. Vandermaar","doi":"10.1109/ISEIM.2008.4664481","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664481","url":null,"abstract":"This paper presents the results of an investigation into the effectiveness of the muWAVE VISION for the detection of internal hot spots in porcelain and polymer clad high voltage devices in the laboratory. The devices consisted of CVTpsilas, surge arresters, and CTpsilas. The results show The muWAVE VISION is effective in the detection of hot spots in CVTpsilas and there is strong correlation between changes in the electrical properties (power factor, partial discharge, and capacitance) and the increase in the apparent temperature at the hot spot location of the device under test as measured by the muWAVE VISION. Its effectiveness for the detection of hot spots in other devices requires more testing of such devices. Initial results are encouraging. The results are discussed in terms of the potential applications of the muWAVE VISION for different kinds of devices.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306273","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664488
Y. Kikuchi, T. Murata, Y. Uozumi, N. Fukumoto, M. Nagata, Y. Wakimoto, T. Yoshimitsu
Nanocomposite enameled wires have been developed for inverter-fed random wound motor windings, however, partial discharge (PD) characteristics is still underlying physics. In this study, effects of environmental conditions on PD characteristics in twisted pairs with conventional and nanocomposite enameled magnet wires were investigated. Measurements of the PD inception voltage (PDIV) and an amount of the PD charge were performed by applying an ac sinusoidal waveform voltage of 60 Hz to the twisted pair. The observed PDIV in this study can be classified into the following three behaviors. First, the PDIV in both wires decreases with increasing relative humidity (RH) at low temperature. Secondly, the PDIV in both wires slightly increases when increasing the RH at high temperature. Thirdly, the PDIV in the conventional enameled wire significantly decreases at 95%RH, while the decrease rate of that in the nanocomposite enameled wire is relatively small. The observed PD phenomena are discussed in terms of material characterization of the enameled wires such as changes in permittivity due to moisture absorption and wettability under voltage application.
{"title":"Considerations on partial discharge of nanocomposite enameled magnet wires for inverter fed random wound motors","authors":"Y. Kikuchi, T. Murata, Y. Uozumi, N. Fukumoto, M. Nagata, Y. Wakimoto, T. Yoshimitsu","doi":"10.1109/ISEIM.2008.4664488","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664488","url":null,"abstract":"Nanocomposite enameled wires have been developed for inverter-fed random wound motor windings, however, partial discharge (PD) characteristics is still underlying physics. In this study, effects of environmental conditions on PD characteristics in twisted pairs with conventional and nanocomposite enameled magnet wires were investigated. Measurements of the PD inception voltage (PDIV) and an amount of the PD charge were performed by applying an ac sinusoidal waveform voltage of 60 Hz to the twisted pair. The observed PDIV in this study can be classified into the following three behaviors. First, the PDIV in both wires decreases with increasing relative humidity (RH) at low temperature. Secondly, the PDIV in both wires slightly increases when increasing the RH at high temperature. Thirdly, the PDIV in the conventional enameled wire significantly decreases at 95%RH, while the decrease rate of that in the nanocomposite enameled wire is relatively small. The observed PD phenomena are discussed in terms of material characterization of the enameled wires such as changes in permittivity due to moisture absorption and wettability under voltage application.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123805814","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664535
T. Tanaka, K. Masuya
Space charge formation processes were investigated on silicone and acrylic elastomers by the pulsed electro-acoustic (PEA) method. Homo charge injection was observed in silicone as anticipated on one hand. Hetero charge injection was unexpectedly observed in acrylic elastomer on the other hand. This peculiar behavior might be related to material composition and additives. Multiple successive hetero charge injection and even homo and hetero charge double injection were observed in the acrylnitrile and acrylic elastomers used. A multiple injection process is interesting to be explored further. Hetero charge injection is an apparent phenomenon that needs more theoretical consideration.
{"title":"Peculiar space charge characteristics in some elastomers","authors":"T. Tanaka, K. Masuya","doi":"10.1109/ISEIM.2008.4664535","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664535","url":null,"abstract":"Space charge formation processes were investigated on silicone and acrylic elastomers by the pulsed electro-acoustic (PEA) method. Homo charge injection was observed in silicone as anticipated on one hand. Hetero charge injection was unexpectedly observed in acrylic elastomer on the other hand. This peculiar behavior might be related to material composition and additives. Multiple successive hetero charge injection and even homo and hetero charge double injection were observed in the acrylnitrile and acrylic elastomers used. A multiple injection process is interesting to be explored further. Hetero charge injection is an apparent phenomenon that needs more theoretical consideration.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131305630","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}
In this paper, nano-silica with and without surface modification was used to prepare linear low density polyethylene (LLDPE) /silica composites whose thermal stability and combustion behaviors were investigated by thermal gravimetric analysis (TG) and cone calorimeter (CONE), respectively. As a result of TG, composites with surface modified nano-silica possessed better thermal stability than that with pristine nano-silica. The results of CONE proved better combustion properties of composites with surface modified nano-silica by showing reduced heat release rate (HRR) and mass loss rate (MLR).
{"title":"Effects of surface modification of nano-silica on the thermal degradation and combustion Behaviors of LLDPE","authors":"Zhidong Han, Haitao Pan, Limin Dong, Xianyou Zhang","doi":"10.1109/ISEIM.2008.4664497","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664497","url":null,"abstract":"In this paper, nano-silica with and without surface modification was used to prepare linear low density polyethylene (LLDPE) /silica composites whose thermal stability and combustion behaviors were investigated by thermal gravimetric analysis (TG) and cone calorimeter (CONE), respectively. As a result of TG, composites with surface modified nano-silica possessed better thermal stability than that with pristine nano-silica. The results of CONE proved better combustion properties of composites with surface modified nano-silica by showing reduced heat release rate (HRR) and mass loss rate (MLR).","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125512697","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 : 2008-10-31DOI: 10.1109/ISEIM.2008.4664446
A. Cavallini, G. Montanari, G. Pasini, A. Salsi
Partial discharge (PD) testing of cable systems can benefit from the use of time synchronized PD detectors since (a) location and identification of PD phenomena is easier, (b) the logistics are greatly simplified as the voltage reference signal must be provided to one detector only (thus exploiting, e.g., instrument transformers at cable terminals). This paper will show how measurements can be synchronized to the global positioning system and how the information provided by synchronized detectors can be exploited. A practical case of measurements on a HV cable will be presented to show the effectiveness of the time synchronized measurements.
{"title":"Improving PD source localization techniques in cable systems","authors":"A. Cavallini, G. Montanari, G. Pasini, A. Salsi","doi":"10.1109/ISEIM.2008.4664446","DOIUrl":"https://doi.org/10.1109/ISEIM.2008.4664446","url":null,"abstract":"Partial discharge (PD) testing of cable systems can benefit from the use of time synchronized PD detectors since (a) location and identification of PD phenomena is easier, (b) the logistics are greatly simplified as the voltage reference signal must be provided to one detector only (thus exploiting, e.g., instrument transformers at cable terminals). This paper will show how measurements can be synchronized to the global positioning system and how the information provided by synchronized detectors can be exploited. A practical case of measurements on a HV cable will be presented to show the effectiveness of the time synchronized measurements.","PeriodicalId":158811,"journal":{"name":"2008 International Symposium on Electrical Insulating Materials (ISEIM 2008)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128251205","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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