2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)最新文献_第6页

Research on bird droppings flashover of 110kV transmission line composite insulator insulation-coated grading ring 110kV输电线路复合绝缘子涂绝缘分级环鸟粪闪络研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961527

Hong Wu, Zhaoguo Xu, Xiuguang Li, Jinpeng Hao, Yuyao Hu

{"title":"Research on bird droppings flashover of 110kV transmission line composite insulator insulation-coated grading ring","authors":"Hong Wu, Zhaoguo Xu, Xiuguang Li, Jinpeng Hao, Yuyao Hu","doi":"10.1109/ICHVE53725.2022.9961527","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961527","url":null,"abstract":"In order to reduce the probability of bird manure flashover caused by the dropping of bird manure on composite insulators of transmission lines and ensure the safe operation of overhead transmission lines, it is necessary to conduct insulation treatment on the voltage sharing ring of suspended composite insulators in operation. In order to improve the insulation level between the composite insulator and the tower and reduce the probability of bird manure flashover. Using COMSOL finite element simulation software, a three-dimensional simulation model of the electric field of the insulation blanket equalization ring of the composite insulator is established. The change of the spatial electric field distribution of the insulation blanket equalization ring under the condition of simulated bird dung is studied. The difference between the insulation blanket equalization ring and the ordinary equalization ring when the bird dung and the conductor are coplanar and heterogeneous is studied. At the same time, the influence of the insulation blanket material and thickness on the spatial electric field of the composite insulator is studied. The research results can provide certain reference for composite insulators to suppress bird manure flashover.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134158423","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

Effect of Corona Aging on the Electrical Properties of SiC/epoxy Composites 电晕时效对SiC/环氧复合材料电性能的影响

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961825

Yongsen Han, Z. Wang

引用次数: 1

In situ detection and analysis of dissolved furfural in oil based on Raman spectroscopy 基于拉曼光谱的油中溶解糠醛的原位检测与分析

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961605

Haiyang Shi, Weigen Chen, Weiran Zhou, Ruimin Song, Kaihua Jiang, Junsheng Chen, Lingfeng Jin, Zikai Jiang, Shengya Qiao

{"title":"In situ detection and analysis of dissolved furfural in oil based on Raman spectroscopy","authors":"Haiyang Shi, Weigen Chen, Weiran Zhou, Ruimin Song, Kaihua Jiang, Junsheng Chen, Lingfeng Jin, Zikai Jiang, Shengya Qiao","doi":"10.1109/ICHVE53725.2022.9961605","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961605","url":null,"abstract":"Accurate detection of dissolved furfural in transformer oil is one of the keys to judge the aging degree of oil paper insulation equipment. As a non-contact and nondestructive testing method, Raman spectroscopy not only realizes the use of single wavelength laser to detect the dissolved aging features in the insulating oil, but also has the characteristics of fast detection speed and no need for extraction. In this paper, the Raman spectra of insulating oil, furfural and saturated samples are measured, and the Raman characteristic 1706 cm-1 furfural in oil is determined by comparison. The main reasons for the shift of the characteristic peaks were mainly due to the influence of the C=O bonds on the external factors, based on the simulation results. In addition, in situ test of different concentration of furfural solution is carried out, and the function relation between the ration of the peak area (I1615cm-1/ I1706cm-1) and concentration is established. The linear quantitative analysis model is obtained by using the least square method, and the minimum detection concentration can be determined to reach 2.4mg/L. The results show that laser Raman spectroscopy is an effective and convenient method for transformer aging diagnosis, and has great research value.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131804321","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

Study on Pollution Accumulation Characteristics of Inverted T-type Insulator Strings 倒t型绝缘子串积污特性研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961363

Yafeng Chao, Liu Zhang, Xinghua Liao, Pan Zhou, Zezhong Sun, Zhenyu Liao

引用次数: 0

Residual Lifetime Evaluation of Power Transformer Insulation Based on PSO-Wiener Model 基于PSO-Wiener模型的电力变压器绝缘剩余寿命评估

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961633

Wenqian Zhang, Bo Li, Yuncai Lu, Jiansheng Li, Jun Jiang, Chaohai Zhang

{"title":"Residual Lifetime Evaluation of Power Transformer Insulation Based on PSO-Wiener Model","authors":"Wenqian Zhang, Bo Li, Yuncai Lu, Jiansheng Li, Jun Jiang, Chaohai Zhang","doi":"10.1109/ICHVE53725.2022.9961633","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961633","url":null,"abstract":"Power transformers play an important role in the operation of power system. Prediction of transformer insulation lifetime reasonably can improve the reliability of power grid and bring in economic benefits. In this paper, the transformer life correlation index (LCI) is constructed as its degradation data by fusing the multi-dimensional data including dissolved gas and polymerization degree (DP) in oil instead of existing single parameter. Then Bayesian updating and Maximum Expectation (EM) algorithm are used to update the parameters of Wiener model. To solve the problem that uncertain initial parameters of Wiener model bring stochastic error to life prediction, Particle Swarm Optimization (PSO) algorithm is proposed. The combined model is efficient to get the optimal solution of initial parameters to improve the prediction accuracy of remaining useful life of power transformers. A 500 kV power transformer in the field is taken as the case. The minimum loss between actual degradation path and predicted trajectory are compared and evaluated. Finally, its predicted total life is 37.96 years, which is in close to the general service life of transformers. Therefore, the PSO-Wiener model is effective for the practical application in the field.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130697067","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

Study on Thermal Conductivity and Breakdown Strength of Core-shell Fe3O4@SiO2 Enhanced Epoxy Composites 核壳增强环氧复合材料导热性能及击穿强度研究Fe3O4@SiO2

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961724

Guodong Zhang, Jihong Huang, Jianyu Ding, Nanqing Chen, B. Du

{"title":"Study on Thermal Conductivity and Breakdown Strength of Core-shell Fe3O4@SiO2 Enhanced Epoxy Composites","authors":"Guodong Zhang, Jihong Huang, Jianyu Ding, Nanqing Chen, B. Du","doi":"10.1109/ICHVE53725.2022.9961724","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961724","url":null,"abstract":"Power electronic devices fabricated from epoxy composites have good electrical insulation properties. Facing the problem of severe heat generation due to the increased integration of devices, it is important to improve the thermal conductivity of epoxy composites for practical applications. In order to reduce the interfacial thermal resistance between filler and epoxy resin, we report a method to improve the compatibility between filler and resin matrix and reduce the scattering of phonons at the interface between filler and resin by coating SiO2 on the surface of Fe3O4. Also, since the potential barrier between SiO2 and resin matrix is smaller than that between Fe3O4 and resin, the electrons is less likely to accumulate at the interface leading to local electric field distortion, and the breakdown voltage of the composite is thus enhanced. The results show that the thermal conductivity is increased by up to 320% at low filler load (30 wt%) compared with the pure epoxy resin without filler, and the breakdown voltage of the thickest SiO2-coated sample is increased by 203% compared with the thinnest sample, which effectively reduces the interfacial thermal resistance between Fe3O4 and resin and increases the breakdown voltage of the composite.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130840343","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

Application of Fall Pipe Rock Dumping Technology in Repairing Exposed and Suspended Submarine Cables 落管抛石技术在外露悬吊海底电缆修复中的应用

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961804

Chi Cai, Xiaowei Huang, Weijia Zhang, Cong Wu, Xiaojun Li, Yikang Chen

引用次数: 0

Attempt to Location and Diagnosis of Cross Interconnection Cable based on FDR 基于FDR的交叉互连电缆定位与诊断的尝试

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014494

W. He, H. He, J. Ye, T. Yang, J. T. Huang, P. Meng, K. Zhou

引用次数: 1

Analysis of XLPE Cable Health Assessment Parameters under Various Test Voltages by PDC Method 用PDC法分析不同试验电压下交联聚乙烯电缆健康评估参数

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961371

C. Suo, H. Yi, Y. Zhang, A. C. Yucel, K. W. Tan, H. Gooi, C. T. Wee, W. K. Chern, A. Ghias

引用次数: 0

Quantitative study on efficacy of lightning rod on building 建筑物避雷针效能的定量研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961455

Sayantan Das, U. Kumar

引用次数: 0