2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)最新文献

{"title":"Investigation of BaTiO3 and TiO2 Based Nano-fillers on the Space Charge and Electrical Strength of Cross-linked Polyethylene (XLPE)","authors":"A. F. M. Moshiur Rahman, M. S. A. Rahman, A. M. Ariffin, N. H. Ali, A. B. A. Ghani, K. Y. Lau, M. Mohamad, M. Osman","doi":"10.1109/ICPADM49635.2021.9493920","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493920","url":null,"abstract":"Titanium element has been used in different applications such as aerospace and electronics. However, the potential benefits of this element in the electrical application are yet to be explored. Thus, this paper is interested to study the potential of Titanium for insulating materials in terms of dielectric strength enhancement. As Titanium is a non-magnetic and a poor conductor of electricity, it may produce improvement to the characteristic of nanocomposite polymers. Hence, this work explores the effect of Barium Titanate (BaTiO3) and Titanium Oxide (TiO2) on the dielectric strength of Cross-linked Polyethylene (XLPE). These methods have been used to prepare nanocomposite samples into thin layers of 1mm. The samples are tested under AC to test the breakdown performance of unfilled and nano-filled XLPE according to ASTM D149 standard. The space charge formation has also been measured across the samples in order to investigate charge formation inside the samples. The results observed positive results in terms of space charge formation and breakdown strength. However, the optimum amount of nano-fillers need to be carefully determined in order to produce improvement. A comparison based on BaTiO3 and TiO2 has shown different behaviours on both characteristics. The study has shown a promising effect of the nanoparticles in XLPE nanocomposite.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131730954","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}

{"title":"Study on The Ageing Performance on Kenaf Insulating Presspaper with Natural Ester","authors":"N. I. Hashim, Mohd Taufiq Ishak, Nurizah Insyirah Md Noh, J. Adnan, M. S. Mohd Nasir, Siti Aminah Mohd Noor","doi":"10.1109/ICPADM49635.2021.9493983","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493983","url":null,"abstract":"This study aims to evaluate the ageing performance of Kraft and Kenaf insulation press-paper in Natural Ester (NE), which could be applied in a power transformer. Kenaf fiber was produced by Kraft pulping process is considered as potential insulation press-paper due to higher cellulose. Due to environmental concerns, NE uses have been considered an alternative to mineral oil. In this experiment, an accelerated ageing test was carried out with transformer insulation press-paper. Kraft and Kenaf press-paper were impregnated in NE with a copper strip of 90°C and 140°C for 10,20 30 days. Fourier transform infrared spectroscopy (FTIR) result showed that O-H's absorption intensity decreased, while C-H, C=O, and C-O bond increased with the ageing time. The viscosity measurements have been used to compare the stability of aged NE with Kraft and Kenaf press-paper at different ageing time. It is found that the viscosity results showed aged NE with Kraft press-paper is higher than Kenaf presspaper as the duration of ageing increase.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127318500","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}

{"title":"Mitigation of Degradation in Polymers by Gamma Rays","authors":"Y. Ohki, Yuya Miyazaki, Hao-Long Zhou, Momoka Sumita, T. Someya, N. Hirai","doi":"10.1109/ICPADM49635.2021.9493858","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493858","url":null,"abstract":"In nuclear power plants, polymers used for electrical insulation are irradiated by radioactive rays, depending on the places where they are installed. If an accident occurs, such polymers may also suffer high-temperature steam exposure. We have conducted several experiments that aim at clarifying the effects of thermal stresses, gamma-ray irradiation, and steam exposure on various insulating polymers and have found that gamma-ray irradiation can mitigate the degradation induced by the steam exposure in several polymers.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125680646","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}

{"title":"Effect of Graphene Nanoplatelets (GNP) on the Dielectric and Thermal Properties of Polystyrene (PS)/Polyvinylidenedifluoride (PVDF) Blends","authors":"N. Kumar, V. Ravibabu, A. Ashokbabu, P. Thomas","doi":"10.1109/ICPADM49635.2021.9493951","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493951","url":null,"abstract":"Polymer films are of much importance in the development of capacitor technology because of their unique properties such as high breakdown strength, good stability and economic viability. The disadvantage of low dielectric constant for polymers can be overcome by incorporating various fillers into them. In this study, polystyrene (PS) blend with 50 volume percentage (vol%) polyvinylidenedifluoride (PVDF) is prepared and graphene nanoplatelets (GNP) in different weight percentages (0 to 15 wt%) are added to this blend to prepare PS/PVDF/GNP nanocomposites. The preparation of blend and its nanocomposites is carried out using melt mixing technique followed by hot pressing. Thermo gravimetric analysis and differential scanning calorimetry studies indicated that the nanocomposites exhibited better thermal stability than the blend. Dielectric properties of nanocomposites are measured at room temperature in the frequency range of 10 Hz to 1 MHz using a dielectric impedance analyzer. Dielectric constant of PS/PVDF blend is found to increase with increasing GNP loading. For PS/PVDF-50 vol% blend with 15 wt% GNP, dielectric constant as high as 71 and dielectric loss of 0.28 are obtained at 100 Hz. By incorporating GNP in PS/PVDF blend, the dielectric constant is enhanced and these nanocomposites can be a potential candidate material for dielectric or capacitor applications.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128112579","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}

{"title":"Comparative Analysis of the Effect of Different Substrates Materials on Microstrip Patch Antenna Operating at 3.6 GHz","authors":"Yakub B. Olufadi, I. Maina, Olaoluwa Ayodeji Adegboye, Ayodeji Ireti Fasiku","doi":"10.1109/ICPADM49635.2021.9493967","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493967","url":null,"abstract":"Besides bandwidth and gain actuation conflict, a microstrip antenna is easy to fabricate and install at a cheap cost. Hence makes it suitable for modern-day telecommunication and wireless device applications to introduce new antenna easy to market. However, the quest to know the best substrate material that will produce higher antenna performance at 3.6GHz prompted the consideration of different substrate materials for the design of rectangular microstrip antenna. Transmission line model (TLM) analysis was used to obtain the antenna designs' physical dimensions for the eight different substrate materials considered at a fixed height (h) of 1.6mm. The simulations were carried out in CST Microwave Studio. The evaluation results show an inverse relationship between the dielectric constant of substrate materials and the gain-as high-density polyethylene with the least dielectric constant displayed the highest gain. The FR-4 with the highest dielectric constant gives the least gain.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128191376","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}

{"title":"Characteristics of Power Cable Sheathing Materials with Thermal ageing","authors":"A. R, Satheesh Kumar P. V, Thirumurthy, Raja G K, Meena K P","doi":"10.1109/ICPADM49635.2021.9493896","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493896","url":null,"abstract":"Sheathing materials of the power cables play an important role in the protection of the cable against mechanical damage and fire accidents. The sheathing materials are selected based on the application and the installation environment of the cables. Generally used sheathing materials for power cables are Poly Vinyl Chloride (PVC), Flame Retardant Poly Vinyl Chloride (FR PVC), Flame Retardant Low Smoke Poly Vinyl Chloride (FRLS PVC) and Low Smoke & Zero Halogen (LSZH) materials. PVC possesses high mechanical strength, and electrical strength. However, the smoke and toxic gas release during fire is more for PVC. To improve the flame retardancy and smoke properties, additives and fillers are blended to PVC to make it as FR PVC and FRLS PVC. The optimal selection of additives is done in such a way that the materials retain its basic mechanical and electrical properties along with improved fire characteristics. LSZH materials emit low smoke and no halogens. It is having high amount of mineral fillers to enhance the fire and smoke properties. Lubricants, stabilizers, plasticizers, antioxidants, and colorants are also added to retain the flexibility of the cables, avoid the deterioration of the materials and to achieve the desired colors. In the present study, the various sheathing materials of new power cables are analyzed for its mechanical and fire properties with ageing. The sheathing materials are aged at its field operating temperatures for duration of up to 672 hours and the properties are measured periodically. Ageing of the special sheathing materials have not resulted into significant changes in the fire properties except the loss of chlorine in PVC & FRLS PVC. However, the ageing of the sheathing materials has resulted into loss of certain mechanical properties. Hence it is suggested to evaluate the properties of sheathing materials with accelerated ageing at the compounding stage itself for its optimal compounding blend and to ensure the integrity of the compounds throughout its lifetime.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"397 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124630920","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}

{"title":"The Application of Magnetic Tape to Measure Lightning Peak Current in Indonesia","authors":"Bryan Denov, S. Hidayat, Suwarno, R. Zoro","doi":"10.1109/ICPADM49635.2021.9493895","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493895","url":null,"abstract":"Indonesia is known as a maritime contingent country, located in the tropical area, so this geographical condition supports the formation of lightning clouds, namely the Cumulonimbus (CB) cloud. Indonesia has many problems related to Lightning. Lightning strikes can cause damage to structures, damage to equipment, fire and human death. To minimize the danger of lightning strikes, it is necessary to design a good lightning protection system, which uses lightning parameters that are in accordance with the lightning characteristics of the area to be protected. The characteristics of lightning can be obtained using various measurement methods, including direct and indirect current measurements. Research on the Characteristics of Lightning in Indonesia is still carried out using indirect measurements. The previous study uses Lightning Detection System using Time of Arrival and Magnetic Direction Finder. The lightning data obtained from direct measurement is still a little. Direct measurement of lightning currents can be done using an instrumented tower equipped with a measuring instrument. To get more local data, Peak Current Measurement System (PCM) that consist of magnetic tape and lightning event counter (LEC) can be used, especially to get lightning peak current in Indonesia.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124435488","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}

{"title":"Dielectric barrier discharge based diesel exhaust treatment for THC removal through plasma catalysis","authors":"K. Nishanth, B. S. Rajanikanth","doi":"10.1109/ICPADM49635.2021.9493893","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493893","url":null,"abstract":"In this paper, an electrical discharge-based gas treatment technique for total hydrocarbon (THC) removal from diesel exhaust has been discussed, utilizing pellets made from wastes of different industrial sectors. This technique, referred to as plasma catalysis, involves activation of catalytic material placed inside the highly reactive non-thermal plasma environment generated in a dielectric barrier discharge (DBD) reactor. A wire-cylinder DBD reactor configuration was used for generating non-thermal plasma. The industrial wastes used in the present work were sourced from various sectors such as agriculture (bagasse, mulberry residue), mariculture (oyster shells) and aluminum industry (bauxite residue/red mud). Pellets were made from these wastes and were tested for possible catalytic activity under plasma activation. When compared to plasma-only treatment of the exhaust, the THC removal percentage obtained using the plasma catalysis approach was found to be higher, ranging between 40% (bagasse) to 50% (oyster shell) under plasma activation of the residue pellets. A discussion on the advantages of reusing such industrial wastes for plasma catalysis and the possible reaction pathways involved in THC removal have been discussed.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121437604","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}

{"title":"Evaluation Of The Impact Of Initial Thermal Aging On The Performances Of The Methyl Ester/Paper Composite Insulation","authors":"G. O. Boyekong, G. M. Mengounou, E. T. Nkouetcha, A. M. Imano","doi":"10.1109/ICPADM49635.2021.9493930","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493930","url":null,"abstract":"Oil immersed transformers are essentially used for electric power transmission. In order to improve the current safety level of distribution and power transformers, natural esters have been proposed as a reliable solution. According to various recent studies, the use of natural esters can extend the operating time of the solid insulation as compared to the use of mineral oils (MO). To reduce their viscosity, natural esters are transesterified to produce methyl esters with a kinematic viscosity below 50 centistokes. Up to date, very few literature data is available on the aging of the methyl ester/paper insulation. Hence, the aim of this work is the improvement of the understanding of the influence of thermal aging on the performances of the monoesters/paper mixed insulation. Firstly, we explain the elaboration and performance analysis processes of monoesters of palm kernel and castor oils. Then we present the aging procedure; the oil/paper composite insulation was aged during 100 hours at 110°C. Finally, we show the results of the analyses performed. Three analyses were realized, namely the determination the Total Acid Number (TAN) based on the standard ASTM D974, UV-visible spectroscopy according to the standard ASTM D6802 and finally the Breakdown Voltage (BDV) of the insulation paper based on the standard ASTM D149. For comparison, the same analyses were performed on the mineral oil/paper complex. In view of the results obtained, the excellent dielectric of monoglycerides can be confirmed.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117259691","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}

{"title":"Carbonized surface tracking on pressboard cylinder of oil filled transformer under main insulation faults","authors":"Muzi Li, Long Li, Hua Yin, W. Lu, Jianan Weng","doi":"10.1109/ICPADM49635.2021.9493925","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493925","url":null,"abstract":"In recently years, main insulation faults such as short-circuit of primary winding to secondary winding, winding to bushing and winding to ground is becoming main sources for transformer explosion. During the short-circuit issues, creeping discharge along the solid-liquid interface tend to cause tree-like carbonized white marks and black marks to spread on pressboard and lead to flashover. These surface tracking phenomena are good indicators for understanding the development mechanisms of transformer insulation failures. However, up to now most of the research on surface tracking of carbonized marks is carried out in minimized test cells, e.g., need-plane electrode configuration immersed in oil/pressboard samples, the precise modelling of surface tracking along oil/pressboard interface in real transformer is still a technical challenge. In this paper, a single-phase transformer model is manufactured, with internal insulation structure imitating the practical case of a 500kV three-phase split type transformer. AC power source is injected into the high-voltage bushing of the transformer model with applied voltage up to 60kV, whereas a divergent gap is artificially placed surrounding the pressboard cylinder to create main insulation failures. Oscilloscope was used to monitor the voltage level of simulated faults, and microscope was used to observe the carbonation traces on the surface of the pressboard after the simulation experiment. The experimental results show that the surface discharge fault of the pressboard will damage the structure of the pressboard, and the damage severity increases with the increase of fault voltage level","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115115153","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}