2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)最新文献_第4页

Comparative Study on Electrical Equivalent Circuit of Insulators With and Without RTV Silicone Rubber Coating Under Clean Fog Condition Based on Leakage Current Waveforms 基于泄漏电流波形的净雾条件下有RTV硅橡胶涂层和无RTV硅橡胶涂层绝缘子等效电路的比较研究

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493989

Adjie Bagaskara, Muhammad Fathur Majid, Lunnetta Safura Lumba, Suwarno

{"title":"Comparative Study on Electrical Equivalent Circuit of Insulators With and Without RTV Silicone Rubber Coating Under Clean Fog Condition Based on Leakage Current Waveforms","authors":"Adjie Bagaskara, Muhammad Fathur Majid, Lunnetta Safura Lumba, Suwarno","doi":"10.1109/ICPADM49635.2021.9493989","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493989","url":null,"abstract":"This research explains the characteristics of the insulator coated with Room Vulcanized Temperature (RTV) and non coated from the leakage current by looking at the electrical circuit parameters of the insulator under clean fog conditions. To find out the characteristics of the electrical equivalent circuit, a simulation was conducted using ATPDraw software. The simulation was conducted by validating the simulation result of the leakage current parameter with the experiment result that consists of the waveform, magnitude, and harmonic component. Several insulator conditions were simulated: voltage test variation and pollution conductivity variation. The results show that the greater the test voltage applied to the insulator make the non-linear resistance circuit parameter having a smaller limit range. For conductivity, variations have a similar effect with test voltage variation. Meanwhile, the coated effect on the insulator greatly affects the equivalent circuit parameters","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"76 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":"130502954","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}

引用次数: 0

Research on a New Optical Method for Space Charge Measurement of Insulating Materials 一种新型绝缘材料空间电荷测量光学方法的研究

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493917

Hanwen Ren, Qingmin Li, Haoyu Gao, Sihong Cheng, Yunzhen Shi, Zhongdong Wang

引用次数: 0

Analysis of Direct Current Integrated Charge in Cable Insulation with Electrical Tree 用电气树法分析电缆绝缘中的直流综合电荷

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493997

Hui Qi, Xinjun Zhang, Rushan Wang, Zhenghong Xu, Wenquan Gu, Yufei Yao, Zhonglei Li

{"title":"Analysis of Direct Current Integrated Charge in Cable Insulation with Electrical Tree","authors":"Hui Qi, Xinjun Zhang, Rushan Wang, Zhenghong Xu, Wenquan Gu, Yufei Yao, Zhonglei Li","doi":"10.1109/ICPADM49635.2021.9493997","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493997","url":null,"abstract":"The electrical-tree degradation inside XLPE cable is a serious threat to the cables under operation. In this paper, the DCIC (direct current integrated charge) method was employed to evaluate the electrical tree inside XLPE insulation. During the preparation of cable samples, the tree inception voltage of ~8 kV was tested. Then 1, 5 and 10 needle electrodes were inserted into cable samples for the tree generation. After the preparation of samples, AC voltage of 10 kV was applied onto the needle electrodes for electrical tree growth. The treeing time was set to 0, 20, 40 and 60 min for the DCIC test. During the DCIC test, a DC voltage of 2 kV was applied on the conductor, and the integral capacitor was connected between the copper shield of cable and ground. From the experiment result, it can be found that with the increase of treeing time, the charging coefficient increases obviously if there are 5 and 10 electrical trees in the cable, this is maybe caused by the occurrence of polarization. The conduction current coefficient changes obviously before and after needles insertion. The information in DCIC curve can be used to analyze electrical tree degradation and mechanical damage in cables at the same time. This nondestructive testing method proposed in this paper will improve the testing efficiency and speed.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"38 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":"115942198","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}

引用次数: 0

Comparison of Flashover Voltages and Surface Discharges of Epoxy Resin with Montmorillonite Nanofillers and XLPE Samples with SiO2 and Al2O3 Nanoparticles 掺蒙脱土的环氧树脂和掺SiO2、Al2O3的XLPE样品的闪络电压和表面放电比较

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493926

D. Verginadis, M. Danikas, Y. Yin, Ahmad Basri Abd Ghani, R. Sarathi

引用次数: 0

Effect of AC Interference on HV Underground Cables Buried Within Transmission Lines Right of Way 交流干扰对输电线路路权内埋置高压地下电缆的影响

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493894

Zoolnasri Abu Harun, M. Osman, A. M. Ariffin, Mohd Zainal Abidin Ab Kadir

{"title":"Effect of AC Interference on HV Underground Cables Buried Within Transmission Lines Right of Way","authors":"Zoolnasri Abu Harun, M. Osman, A. M. Ariffin, Mohd Zainal Abidin Ab Kadir","doi":"10.1109/ICPADM49635.2021.9493894","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493894","url":null,"abstract":"Issues and interest of AC interference from Overhead Transmission Lines (OHTL) to nearby co-located facilities not only involve pipelines, communication cables and transportation infrastructures but also to nearby High Voltage (HV) underground cables. In this paper, the effects on a three phase AC 275kV underground cable running in parallel to three phase AC double circuit of 275kV OHTL are studied using Current Distribution, Electromagnetic Interference, Grounding and Soil Structure Analysis (CDEGS) software program. The underground cable under study is placed within the OHTL Right of Way (ROW) where the modelling, simulation and analysis of both systems are presented in order to assess induced voltage on the sheath of an underground cable. This paper investigates the case when OHTL and underground cable were energized during steady state operation with respect to different length and parallelism of both systems. During the operation of both systems, induced sheath voltage on the cables has increased and voltage distribution changed significantly which can stress the sheath itself. The induced voltage on underground cable sheath has been reduced to tolerable sheath standing voltage as specified by international standard by proposing some mitigation techniques.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"31 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":"122298192","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}

引用次数: 2

Harmonic Currents Generated by MV Modular Converters and Thermal Insulation Aging of Polymeric Cables 中压模块变流器产生的谐波电流与聚合物电缆的绝缘老化

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493914

M. Bosworth, G. Montanari, M. Steurer, L. Wang, R. Ghosh, P. Lewis

{"title":"Harmonic Currents Generated by MV Modular Converters and Thermal Insulation Aging of Polymeric Cables","authors":"M. Bosworth, G. Montanari, M. Steurer, L. Wang, R. Ghosh, P. Lewis","doi":"10.1109/ICPADM49635.2021.9493914","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493914","url":null,"abstract":"Electrified transportation relies broadly upon power electronics to optimize power supply, in a framework of power density, efficiency and load dynamics maximization. If, on one side such, goals can be achieved thanks to the rapid increase of power electronic component reliability, voltage, slew rate, modulation frequency, on the other hand all of this can have negative impact on electro-thermal insulation life. Accelerated aging processes, not expected and accounted in insulation design based on AC sinusoidal electrical stress experience, have to be analyzed and modelled to design properly electrical insulation and ensure its long-term reliability. This paper focuses on the contribution of harmonic-current losses on thermal aging of electrical insulation of cables connected to MV modular converters. Calculations and simulations show that losses, even if higher on the AC side as compared to the DC side, are not large enough, if the converter design is done properly, to significantly affect thermal life, in both XLPE and EPR insulated cables. This outcome can be reversed in case of poor design, not considering specifically dielectric losses and heat dissipation.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"3 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":"126110857","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}

引用次数: 0

Classification of Fault and Stray Gassing in Transformer Oil using SVM, NB and KNN Algorithms 基于SVM、NB和KNN算法的变压器油故障和杂散气体分类

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493941

Hussein Hasan Al-Katheri, M. Yousof, H. Illias, M. Talib

引用次数: 3

Develompment of flexible sensors based on piezoelectric nanofibers 基于压电纳米纤维的柔性传感器的研制

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493957

G. Selleri, D. Fabiani, A. Zucchelli, T. Brugo, F. Grolli, Lorenzo Bordoni

引用次数: 1

Study on the Thermodynamic Stability of the Organic Dielectrics in the Photovoltaic Cell 光伏电池中有机介质的热力学稳定性研究

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493892

Richard Kyung, Christopher Lee

引用次数: 0

Three-dimensional Visualization Technology for Ultrasonic Detection of Partial Discharges in Power Transformers 电力变压器局部放电超声检测的三维可视化技术

2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM) Pub Date : 2021-07-12 DOI: 10.1109/ICPADM49635.2021.9493994

Hao Zhang, W. Lu, Hui Liu, Jianan Weng, Wenbin Zhao, Zhiyan Peng

{"title":"Three-dimensional Visualization Technology for Ultrasonic Detection of Partial Discharges in Power Transformers","authors":"Hao Zhang, W. Lu, Hui Liu, Jianan Weng, Wenbin Zhao, Zhiyan Peng","doi":"10.1109/ICPADM49635.2021.9493994","DOIUrl":"https://doi.org/10.1109/ICPADM49635.2021.9493994","url":null,"abstract":"Partial discharges are crucial sources for insulation deterioration in power transformers, and precise detections of partial discharge is of great significance for transformer condition monitoring. Recently, visualized ultrasonic detection technology has been increasingly used as a live detection method for locating partial discharges inside transformer. It has the advantages of strong penetrating ability and fast response, but still has the problems of poor detection sensitivity and low positioning accuracy when the atmosphere noises are high. Further, the sonography indicating the region of partial discharges measured by visualized ultrasonic technology is only the two-dimensional projection of the region of interest, and the precise spatial positioning of the partial discharge cannot be evaluated. This paper proposes an improved visualized ultrasonic technology for panoramic visualization of partial discharge voiceprint on power transformers. The refined power transformer model is established through 3-D laser scanning and virtual reconstruction technology. Ultrasonic sensors with center frequency of 100 kHz were used to collect ultrasonic signals presented on the surface of power transformer. A self-developed data extraction algorithm was used to obtain ultrasonic signal digital matrix from the original collected data. In the following, 2D to 3D geometric transformation is applied to perform digital ultrasonic data on the meshed grid of transformer model. Finally, the ultrasound image on the entire hologram can be displayed holographically, which can be used to indicate partial discharge defects that occur inside the transformer in the 3-D space. Experimental verification on a converter transformer with a capacity of 382MVA confirmed that using this new visualization method, the location of the ultrasonic hot spots has a higher accuracy.","PeriodicalId":191189,"journal":{"name":"2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)","volume":"31 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":"127500105","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}

引用次数: 1