2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)最新文献_第4页

A Case Analysis on Intermittent Multi-point Grounding of Transformer Core Based on Dissolved Gas Analysis and Partial Discharge Location 基于溶解气体分析和局部放电定位的变压器铁心间歇多点接地实例分析

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961622

Zhou Bo, Gao Jun, Yang Hongquan, Liu Yanqing, L. Xing, Qiu Wei, Yang Xinchun, Guo Chao

引用次数: 0

Diagnosis and Elimination of an Overheating Fault for Valve-Side Structure in Converter Transformers 换流变压器阀侧结构过热故障的诊断与排除

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961726

Xinyu Luo, Rui Liu, Zhenze Long, Longjiao Li, A. Ren, Guangning Wu

引用次数: 0

Study on Temperature Rise Characteristics of Insulation Jumper Clamp for 10kV Distribution Line 10kV配电线路绝缘跳线钳温升特性研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961409

Bo Zhang, Jiakai Liang, Chengchong Fang, Hui Zhang, Yong Xu, Wei Wang, Tiane Wu, Na Wang, Yuli Wang

{"title":"Study on Temperature Rise Characteristics of Insulation Jumper Clamp for 10kV Distribution Line","authors":"Bo Zhang, Jiakai Liang, Chengchong Fang, Hui Zhang, Yong Xu, Wei Wang, Tiane Wu, Na Wang, Yuli Wang","doi":"10.1109/ICHVE53725.2022.9961409","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961409","url":null,"abstract":"It is of great importance that insulated jumper clips are used to transfer current during live-ling work on 10kV distribution lines to ensure the safety of live workers. To this end, a 1:1 simulation model of the 2756/SJ1503 insulated jumper clip is established and the temperature rise of the insulated jumper clip is simulated using the electric-thermal-force multi-physical field coupling method. The validity of the model is verified through experiments to analyze the effect of wire clamps on the temperature distribution of wire clamps in terms of contact pressure, ambient temperature, light intensity, wind speed, and wire load capacity. Calculation results show that for every 5MPa increase in contact pressure between the line clip and the wire, the contact loss of the contact surface decreases by 0.07kW/m2 on average. Light intensity is one of the main factors affecting the temperature rise of insulated jumper clips, light intensity per 200W/m2, the average temperature rise of the clips rose 3K. The ambient temperature factor has less influence on the temperature rise of the clamps. The increase in wind speed has a catalytic effect on the heat dissipation of insulated jumper clips. With the increase of the wire carrying capacity, the temperature of the wire clip shows an exponential form of growth, the current density of the wire clip and the wire contact surface is distributed at both ends of the contact surface, and the current density at both ends is uniformly distributed.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"26 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":"126520525","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

Electromagnetic-fluid-temperature coupled field simulation on cable shaft in high-rise buildings 高层建筑电缆井的电磁-流-温耦合场仿真

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961516

Bo Qu, Xin Li, Xingyao Xiang, Shaowei Wu, Ziqi Zhang, Shengwen Shu

{"title":"Electromagnetic-fluid-temperature coupled field simulation on cable shaft in high-rise buildings","authors":"Bo Qu, Xin Li, Xingyao Xiang, Shaowei Wu, Ziqi Zhang, Shengwen Shu","doi":"10.1109/ICHVE53725.2022.9961516","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961516","url":null,"abstract":"Once the shaft cable catches fire, the burning rate is generally about three times that of the horizontal cable, and the “chimney effect” will make the fire burn fiercely and spread quickly. Based on the governing equations of electromagnetic field, temperature field and fluid field, combined with the geometric model of the actual cable shaft, a multi-physics simulation model of the cable shaft is established in this paper. Through the simulation analysis of the transient electromagnetic-fluid-temperature field, the temperature change of the cable is obtained: in a relatively confined space, the temperature increases with the height. By changing the plugging material parameters, the influence of different plugging materials on the electromagnetic-fluid-temperature field of cable under normal operation is simulated. It is concluded that fireproof material has certain influence on heat dissipation of cable shaft. The temperature of intermediate partitions and cables blocked by fire-resistant materials has increased significantly. The maximum temperature is 0.66°C higher than when no fireproof material is used.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"5 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":"125472637","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

Discussion on Fault Analysis for High-capacity and Multi Column Parallel Arrester 大容量多列并联避雷器故障分析探讨

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961354

Boyu Zhang, Zi-ming He, Xia Zhao, Xuebin Lyv

引用次数: 0

DC electric field optimization of AC XLPE cable joint in DC operation 交流交联聚乙烯电缆接头直流运行时直流电场优化

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961396

Jingzhe Yu, Yi Lu, Yuan Chen, Xu Zhang, Yanfeng Gao, Shuochao Fan, Dewen Wang, Xiangrong Chen

{"title":"DC electric field optimization of AC XLPE cable joint in DC operation","authors":"Jingzhe Yu, Yi Lu, Yuan Chen, Xu Zhang, Yanfeng Gao, Shuochao Fan, Dewen Wang, Xiangrong Chen","doi":"10.1109/ICHVE53725.2022.9961396","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961396","url":null,"abstract":"Studying the DC electric field of the cable joint is important to ensure the stable operation of AC cable in DC voltage. In this paper, the typical 10kV AC Cross linked polyethylene (XLPE) cable joint was selected and the thermo-electric coupling simulation model was built. The thermo-electric coupling simulation of the cable joint was carried out under the operating conditions of conductor temperature of 70 ° C and DC voltage of 10 kV. When the insulation temperature difference of the cable joint is 20 °C, the maximum electric field near the screen tubes of 1.5, 2, 3 and 4 mm thickness are 2.97 MV/m, 2.53 MV/m, 2.19 MV/m and 2.07 MV/m respectively. Moreover, the stress cone of the cable joint was optimized. The axial electric field of the stress cone is stable at about 0.04 MV/m after optimization. Therefore, increasing the thickness of the screen tube can effectively reduce the maximum electric field and the risk of space charge accumulation. Furthermore, the DC electric field distribution in the stress cone region is effectively improved by optimizing the stress cone of the cable joint.","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":"125751309","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 Transformer Oil-Paper Insulation State Diagnosis and Life Prediction Method Based on Shuffle-SVM 基于Shuffle-SVM的变压器油纸绝缘状态诊断与寿命预测方法研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014500

Ji Liu, Dixing Wu, Mingze Zhang, Kunhan Wang, Shouming Wang

引用次数: 0

Partial Discharge Measurement with Non- Intrusive Broadband RF Sensors in the Fabrication Inspection of an 800 kV HVDC Converter Transformer 非侵入式宽带射频传感器在800 kV高压直流换流变压器制造检测中的局部放电测量

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961508

Jianguo Wei, Hui Huang, Yi Liu, Zhihao Yang, B. Schubert, Weilin Liu

引用次数: 0

An Improved YOLOv4 Model for Object Detection of Bird Species Threatening Transmission Line Security 一种用于威胁输电线路安全鸟类目标检测的改进YOLOv4模型

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014529

Zhibin Qiu, Zhibiao Zhou, Xuan Zhu

{"title":"An Improved YOLOv4 Model for Object Detection of Bird Species Threatening Transmission Line Security","authors":"Zhibin Qiu, Zhibiao Zhou, Xuan Zhu","doi":"10.1109/ICHVE53725.2022.10014529","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.10014529","url":null,"abstract":"Bird activities seriously affect the safety of power lines. An improved lightweight YOLOv4 model was proposed to recognize typical bird species threatening power transmission line security in this study. A dataset composed of 3000 images about 10 bird species that easily cause transmission line outages was constructed. An improved YOLOv4 model was established by replacing the feature extraction network with GhostNet. The focus layer was added in GhostNet, and the standard convolution in the path aggregation network (PANet) was replaced with the depthwise separable convolution (DSC), thus to greatly reduce the number of parameters in the model. After model training, the improved YOLOv4 was applied to detect bird targets in 300 test sample images. The experimental results indicate that the mean average precision (mAP) and frames per second (FPS) of the proposed model are respectively 97.55% and 43, which is much faster than YOLOv4. In terms of detection accuracy and efficiency, the proposed model was compared to the existing models such as SSD and YOLOv4. This study can be applied for bird recognition and therefore contribute to achieve differentiated prevention of bird-related outages.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"94 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":"115890034","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

Simulation calculation and influence factor analysis of induced voltage of metal sheath 金属护套感应电压的仿真计算及影响因素分析

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961758

Jinxin Li, Yangchun Cheng

{"title":"Simulation calculation and influence factor analysis of induced voltage of metal sheath","authors":"Jinxin Li, Yangchun Cheng","doi":"10.1109/ICHVE53725.2022.9961758","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961758","url":null,"abstract":"The current in the core of the single-core high-voltage cable will induce the alternating magnetic field around it, and the cable metal sheath will induce the induced voltage under the action of the magnetic field. Higher induced voltage will affect the normal operation of the cable and the safety of the operations staff. In this paper, a three-dimensional corrugated aluminum sheath model is constructed according to the actual cable, and the results are compared with the two-dimensional model, in the case of horizontal laying and triangular laying, the error is within 0.009V/m, so a two-dimensional model can be used to simplify the calculation. The error between the two-dimensional model and theoretical calculation is within 0.005V/m under the two laying conditions, which verifies the correctness of the simulation value. In this paper, the effect of unbalance of current on induced voltage is analyzed. When the phase angle is unbalance, the induced voltage of other phases increases sharply. On the basis of double circuit calculation formula, the induced voltage of three circuits and four circuits is calculated by superposition method. The induced voltage of more phases can be superimposed according to this method. The intermediate distance can be appropriately increased to reduce the side phase induced voltage during four-loop laying. The results of the discussion have reference significance for cable laying in practical engineering.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"25 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":"131370080","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