2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献_第8页

On the initiation of negative streamers at mineral oil-solid interfaces 矿物油-固体界面负飘带的起生研究

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7351999

D. Ariza, M. Becerra, R. Hollertz, C. Pitois

引用次数: 2

A comparative study on partial discharge ultrasonic detection using fiber Bragg grating sensor and piezoelectric transducer 光纤光栅和压电传感器局部放电超声检测的比较研究

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352071

Qing Zheng, G. Ma, Jun Jiang, Cheng-Rong Li, H. Zhan

{"title":"A comparative study on partial discharge ultrasonic detection using fiber Bragg grating sensor and piezoelectric transducer","authors":"Qing Zheng, G. Ma, Jun Jiang, Cheng-Rong Li, H. Zhan","doi":"10.1109/CEIDP.2015.7352071","DOIUrl":"https://doi.org/10.1109/CEIDP.2015.7352071","url":null,"abstract":"Piezoelectric transducers (PZT) detecting ultrasonic as a traditional method of high voltage equipment partial discharge detection has drawbacks of low sensitivity and low detection efficiency. In order to overcome these disadvantages, an ultrasonic detection system is developed based on fiber Bragg grating (FBG). Because of the high sensitivity, the good insulation ability and immune to electromagnetic interference, the optical sensor can be put into the transformer and detect the weak partial discharge signal directly. In this paper, experiments were developed to obtain the responses of the ultrasonic detection system with 10-mm-length, and a comparison between 10-mm-length FBG and PZT of sensitivity was carried out as well. The results showed that ultrasonic detection system with 10-mm-length FBG has a better performance than PZT in the bandwidth of 20 kHz~500 kHz. And the max sensitivity of FBG is -79.503 dB at 180 kHz (0 dB is defined as 1V/uBar), which proves the feasibility and effectiveness of the proposed detection method in the partial discharge detection.","PeriodicalId":432404,"journal":{"name":"2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134350650","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: 8

Estimating the aging parameter of XLPE and its nanocomposites under temperature gradient 温度梯度下XLPE及其纳米复合材料老化参数的估算

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352041

Y. Wang, L. Zepeng, Kai Wu, Dong Jinhua, Li Wenpeng, Shang Kangliang

{"title":"Estimating the aging parameter of XLPE and its nanocomposites under temperature gradient","authors":"Y. Wang, L. Zepeng, Kai Wu, Dong Jinhua, Li Wenpeng, Shang Kangliang","doi":"10.1109/CEIDP.2015.7352041","DOIUrl":"https://doi.org/10.1109/CEIDP.2015.7352041","url":null,"abstract":"The aging parameter n can reflect the aging property of material to some degree and determine the test voltage of the type test and prequalification test of HVDC cables. However, the aging parameter has rarely been studied systematically, especially under temperature gradient. In this paper, step-stress test was carried out to estimate the ageing parameter n of two materials, XLPE and its nanocomposites under temperature gradient. A new method based on the cumulative damage has been used to obtain the ageing parameters, which can fully take the consideration of the voltage procedure and avoid the errors brought by the approximation. Aging parameters of XLPE and its nanocomposite under temperature gradient ΔT =0, 20, 40°C are 13, 15.4, 17.7 and 8.6, 9.4, 10, respectively. The aging parameter n reduces when nano-fillers are introduced into XLPE. As XLPE nonocomposites can depress space charge availably, the larger aging parameter n of XLPE may be explained in terms of space charge effect and thus more severe field distortion at higher DC voltage. It is also suggested that the electrostatic force induced by space charge can contribute to material aging.","PeriodicalId":432404,"journal":{"name":"2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"128 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134292531","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

A novel method to clean aged RTV coating before recoating 一种涂层复涂前清洗老化RTV涂层的新方法

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7351991

Xiangyun Fu, Zhifu Zhang, He Gao, Xiangjun Lin, Bin Cao, H. Mei, Liming Wang

引用次数: 0

Nanosecond electric pulse induced changes in cell suspension conductivity 纳秒电脉冲诱导细胞悬浮液电导率的变化

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352103

Andrew J. Fairbanks, Anand Vadlamani, T. Whitmer, A. Garner

引用次数: 1

Effect of thin solid layer coating on creepage discharge characteristics in oil/pressboard composite insulation system 固体薄层涂层对油压复合绝缘系统爬电放电特性的影响

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352050

K. Jang, S. Yoshida, M. Kozako, M. Hikita

引用次数: 2

Pre-breakdown conduction in polymeric films 聚合物薄膜中的预击穿传导

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352032

Zongze Li, H. Uehara, R. Ramprasad, S. Boggs, Yang Cao

引用次数: 8

A study on the usage of nonwoven nanofibers in electrical insulating materials 非织造纳米纤维在电绝缘材料中的应用研究

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352029

R. Polanský, M. Bartůňková, P. Prosr, J. Pihera, J. Chvojka

{"title":"A study on the usage of nonwoven nanofibers in electrical insulating materials","authors":"R. Polanský, M. Bartůňková, P. Prosr, J. Pihera, J. Chvojka","doi":"10.1109/CEIDP.2015.7352029","DOIUrl":"https://doi.org/10.1109/CEIDP.2015.7352029","url":null,"abstract":"Nonwoven nanofibers as a new material for possible improving properties of electrical insulation are considered in this paper. Polyamide nanofibers are used for modification of commonly used three-component mica-based high voltage electrical insulating material (epoxy resin, glass cloth and mica). Influence of different volume ratio and density of the nanofibers on the properties of resulting composites was analyzed. Melting behavior of nonwoven nanofibers and structure of resulting composites were examined by differential scanning calorimetry (DSC) and by scanning electron microscopy (SEM). Dielectric strength and voltage dependence of dissipation factor were subsequently tested. Mechanical properties were analyzed via Charpy impact test. The obtained results demonstrated that voltage dependence of dissipation factor showed interesting behavior especially at electric field intensity greater than 5kV/mm when the partial discharge activity starts to occur. Under these circumstances some of the modified composites are characterized by notable lower values of dissipation factor. Moreover, while the impact strength of some of the modified composite increased (of about 17%), dielectric strength stayed the same or better than expected.","PeriodicalId":432404,"journal":{"name":"2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123407732","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: 5

Corona onset and breakdown voltage prediction of rod-plane air gaps based on SVM algorithm 基于支持向量机算法的杆面气隙电晕发作及击穿电压预测

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352007

Zhibin Qiu, J. Ruan, Daochun Huang, M. Wei, Liezheng Tang, Shengwen Shu

{"title":"Corona onset and breakdown voltage prediction of rod-plane air gaps based on SVM algorithm","authors":"Zhibin Qiu, J. Ruan, Daochun Huang, M. Wei, Liezheng Tang, Shengwen Shu","doi":"10.1109/CEIDP.2015.7352007","DOIUrl":"https://doi.org/10.1109/CEIDP.2015.7352007","url":null,"abstract":"Corona onset voltage and breakdown voltage of the air gap are the basis for the external insulation design of high-voltage transmission projects. A new prediction method for the discharge voltage of rod-plane air gaps is proposed in this paper. Support vector machine (SVM) is applied to establish the prediction model, and the improved grid search (GS) method is used for parameter optimization. The features extracted from the electric field distribution calculated by finite element model of the rod-plane air gap are taken as the input parameters to the SVM model, and whether corona will onset, or the gap will breakdown under a given voltage is taken as the output of the SVM model. Trained by the electric field features under several limited experimental values, the SVM model is effective to predict the corona onset or breakdown voltage. The proposed method is applied to predict the positive DC corona onset voltage and power frequency AC breakdown voltage of rod-plane air gaps. The predicted results are in accordance with the experimental values with small deviation, which preliminary validate the feasibility of predicting the discharge voltage of the air gap by machine learning algorithms.","PeriodicalId":432404,"journal":{"name":"2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114409405","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: 5

Influence of interface on the dielectric response, electrical and thermal conductivity of high density polyethylene based composites 界面对高密度聚乙烯基复合材料介电响应、导电性和导热性的影响

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI: 10.1109/CEIDP.2015.7352138

C. Vanga-Bouanga, T. Heid, M. Frechette, É. David

引用次数: 4