High Voltage最新文献_第3页

Elliptical arrays of tunnelling magnetoresistance sensors for rectangular busbar current measurement 矩形母线电流测量用隧道磁阻传感器椭圆阵列

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-18 DOI: 10.1049/hve2.70087

Haoyu Ma, Shilin Wu, Ran Bi, Huiquan Zhang, Jian Tian, Duqing Zhang, Jun Hu

{"title":"Elliptical arrays of tunnelling magnetoresistance sensors for rectangular busbar current measurement","authors":"Haoyu Ma, Shilin Wu, Ran Bi, Huiquan Zhang, Jian Tian, Duqing Zhang, Jun Hu","doi":"10.1049/hve2.70087","DOIUrl":"10.1049/hve2.70087","url":null,"abstract":"The integration of numerous distributed energy resources and power electronic devices introduces a wide spectrum of frequency disturbances, which significantly challenge the stability of modern power systems. Therefore, there is an urgent need to enhance the current monitoring level of modern power systems. This paper proposes a novel busbar current inversion scheme based on an elliptical magnetic sensor array. By establishing a simulation model, the effect of structural parameters of the elliptical array on its current measurement accuracy was analysed. The anti-interference capability of the elliptical array in complex environments such as busbar displacement and crosstalk was studied, and principles for designing array parameters under different current sensor standards were established. Experiments conducted on the proposed current sensing scheme demonstrated that the designed current array has a range of 0–150 A, with a current measurement error below 0.1% without external interference and not exceeding 1% during busbar displacement. Under conditions of crosstalk, the measurement accuracy achieved was class 0.5. The sensor array possesses high measurement accuracy, robust anti-interference capability, low power consumption, compact size and a noncontact nature. It exhibits significant potential for extensive application in novel business scenarios within the power system.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"807-819"},"PeriodicalIF":4.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstrip petal-like split ring resonator for moisture condition assessment of oil-paper insulation 用于油纸绝缘水分状况评估的微带花瓣状裂环谐振器

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-18 DOI: 10.1049/hve2.70078

Lulin Xu, Xiaoyu Yang, Jiongting Jiang, Chao Li, Xinyuan Feng, Daning Zhang, Haibao Mu, Guanjun Zhang

{"title":"Microstrip petal-like split ring resonator for moisture condition assessment of oil-paper insulation","authors":"Lulin Xu, Xiaoyu Yang, Jiongting Jiang, Chao Li, Xinyuan Feng, Daning Zhang, Haibao Mu, Guanjun Zhang","doi":"10.1049/hve2.70078","DOIUrl":"10.1049/hve2.70078","url":null,"abstract":"Moisture ingression accelerates the ageing and degradation of the oil-paper insulation. Rapid and accurate moisture assessment of power apparatus in the field is thus essential. In this paper, an innovative design of a microstrip petal-like complementary split ring resonator (MPCSRR) is proposed for the moisture assessment of the oil-paper insulation in the GHz range. The MPCSRR has advantages in concentrating the electromagnetic field, significantly increasing the number of resonance peaks, and achieving a sensitivity of approximately 3–4 times higher than the traditional microstrip ring resonators (MRRs). A mathematical model for analysing the dielectric response is established, combining the theoretical analysis and equivalent circuit model. The effects of microstrip width and substrate thickness on impedance matching, as well as the incidence depth and test sensitivity of the resonator, are explored using simulation. The experimental results demonstrate that the MPCSRR achieves rapid moisture detection within tens of seconds and accurately characterises the wetness of the oil-paper insulation. A moisture assessment model based on Lasso regression achieves an accuracy of 4%, confirming the reliability and validity of the proposed method. The results also verify that the sensitivity of the MPCSRR is also higher than that of the traditional MRR, showing its potential for precise and efficient moisture detection in oil-paper insulation.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"820-830"},"PeriodicalIF":4.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel GIS breakdown location method based on natural frequency of transient voltage 基于瞬态电压固有频率的GIS击穿定位方法

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-18 DOI: 10.1049/hve2.70079

Qiang Sun, Dengwei Ding, Yanpeng Ge, Ziwei Zhang, Wensheng Gao, Weidong Liu, Ke Zhao, Bo Liu, Lei Wang, Jiaqi Qu

{"title":"A novel GIS breakdown location method based on natural frequency of transient voltage","authors":"Qiang Sun, Dengwei Ding, Yanpeng Ge, Ziwei Zhang, Wensheng Gao, Weidong Liu, Ke Zhao, Bo Liu, Lei Wang, Jiaqi Qu","doi":"10.1049/hve2.70079","DOIUrl":"10.1049/hve2.70079","url":null,"abstract":"During on-site withstand voltage tests of gas-insulated switchgears (GIS), once a breakdown occurs, it is hard to locate the breakdown position due to the intricate branch structures and minimal breakdown energy. The existing methods may require the placement of a large number of sensors with unsatisfactory accuracy, which adversely affects the process of inspecting and repairing, as well as the subsequent tests. To address this issue, this paper introduces a novel GIS breakdown location method. This method is predicated on the natural frequency of the transient voltage caused by the breakdown. The relationship between the breakdown position and the natural frequency is first derived, which is referred to as the location equation. Then, the natural frequency characteristics are discussed from both mathematical and energy perspectives. Based on these characteristics, the location method is proposed that utilises the location equation and the frequencies at two measurement points. The results of the laboratory experiments demonstrate the accuracy of the method and certain advantages over the ultrasonic method. Further, the effectiveness of the method in GIS and gas-insulated transmission lines (GIL) with complex structures and high voltage levels is also confirmed by simulation cases and field experimental data.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"856-875"},"PeriodicalIF":4.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Guest Editorial: Dielectric materials, sensing, monitoring, and diagnostic technologies for high-voltage equipment in new power systems. II Advanced sensor method and diagnosis technique 嘉宾评论：新型电力系统高压设备的介电材料、传感、监测和诊断技术。先进的传感器方法和诊断技术

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-13 DOI: 10.1049/hve2.70081

Jun Hu, Xianhao Fan, Chuanyang Li, Jinliang He, Giovanni Mazzanti

{"title":"Guest Editorial: Dielectric materials, sensing, monitoring, and diagnostic technologies for high-voltage equipment in new power systems. II Advanced sensor method and diagnosis technique","authors":"Jun Hu, Xianhao Fan, Chuanyang Li, Jinliang He, Giovanni Mazzanti","doi":"10.1049/hve2.70081","DOIUrl":"10.1049/hve2.70081","url":null,"abstract":"Constructing next-generation power systems presents significant challenges and transformative requirements for grid operation and maintenance. Advanced monitoring and diagnostic technologies are increasingly vital to enhance grid transparency. As energy production and distribution become more decentralised, traditional maintenance methods no longer adequately address the security needs of the grid. Moreover, conventional condition monitoring approaches often target specific equipment and parameters, resulting in fragmented and isolated data sets. With the advent of digitised modelling, advanced sensing and multisource monitoring technologies, we can now scientifically simulate power system operations digitally, enabling accurate state assessments, predictive analytics and proactive early warnings for equipment conditions.This special issue highlights cutting-edge research focused on intelligent operation and maintenance strategies for essential equipment in emerging power systems. We are pleased to introduce ten high-quality articles selected for this issue.In conclusion, this special issue presents the latest advancements in sensor technology, measurement methods and diagnostic techniques, appealing to physicists, engineers, mathematicians and computer scientists interested in high-voltage engineering and fault diagnosis. We hope readers find this collection insightful, educational and inspiring.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"785-786"},"PeriodicalIF":4.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144915151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection of micro-water in transformer oil based on ultrasonic pulse-echo method and sparrow search algorithm-random forest 基于超声脉冲回波法和随机森林麻雀搜索算法的变压器油微水检测

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-13 DOI: 10.1049/hve2.70093

Ziwen Huang, Lufen Jia, Wenwen Gu, Weigen Chen, Qu Zhou

{"title":"Detection of micro-water in transformer oil based on ultrasonic pulse-echo method and sparrow search algorithm-random forest","authors":"Ziwen Huang, Lufen Jia, Wenwen Gu, Weigen Chen, Qu Zhou","doi":"10.1049/hve2.70093","DOIUrl":"10.1049/hve2.70093","url":null,"abstract":"This study proposes a novel transformer oil micro-water detection method based on the ultrasonic pulse-echo technique, optimised by a sparrow search algorithm (SSA) to enhance the prediction performance of a random forest (RF) model. Initially, finite element simulations were conducted to select optimal ultrasonic frequencies of 2 and 2.5 MHz. An accelerated thermal ageing experiment was performed using #25 Karamay oil samples, and ultrasonic pulse-echo signals were collected via a custom-built detection platform. Variational mode decomposition was employed to extract effective echoes from the raw pulse-echo signals. Temporal and frequency domain analyses yielded 162 dimensional features, which were subsequently filtered to 88 key parameters using the maximum information coefficient method. A transformer oil micro-water detection model was then developed by integrating the SSA with RF and trained using K-fold cross-validation. The model achieved an impressive average prediction accuracy of 97.34% over 10 cross-validation runs. The testing set demonstrated a prediction accuracy of 96.40%, a remarkable improvement of 16.53% compared to the unoptimised RF model. The findings provide a solid foundation for the rapid detection of micro-water content in transformer oil using the ultrasonic pulse-echo method.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"917-929"},"PeriodicalIF":4.9,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144915150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BCM-YOLO: An improved YOLOv8-based lightweight porcelain insulator defect detection model BCM-YOLO：一种改进的基于yolov8的轻质瓷绝缘子缺陷检测模型

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-11 DOI: 10.1049/hve2.70080

Feng Bin, Fan Hou, Da Chen, Kang Qiu, Xiaofeng Lu, Qiuqin Sun

{"title":"BCM-YOLO: An improved YOLOv8-based lightweight porcelain insulator defect detection model","authors":"Feng Bin, Fan Hou, Da Chen, Kang Qiu, Xiaofeng Lu, Qiuqin Sun","doi":"10.1049/hve2.70080","DOIUrl":"10.1049/hve2.70080","url":null,"abstract":"Porcelain insulator is an important component of power transmission systems, and its condition detection is essential to ensure safe operation of the power grid. Nevertheless, it is difficult for existing detection models to effectively solve the contradiction between detection accuracy and resource consumption. To address this issue, a high-precision lightweight insulator defect detection model (BCM-YOLO) based on an improved YOLOv8 is proposed. Firstly, bidirectional feature pyramid network (BiFPN), with a simplified bidirectional information flow mechanism, is employed to replace the path aggregation network with feature pyramid network in YOLOv8 to alter the feature fusion mode, thereby reducing the model size. Secondly, a cross-stage partial Bottleneck with 2 convolutions partially replaced by a context-guided block (C2f_CG) structure with parameter sharing is designed using the improved context-guided block to optimise the cross-stage partial Bottleneck with 2 convolutions (C2f) modules, thus further decreasing the number of model parameters. Finally, multiscale dilated attention is introduced into the BiFPN network to enhance the perception ability of different scales of features to improve the detection performance. Experimental results indicate that compared to YOLOv8s, the BCM-YOLO model reduces the number of parameters by 50.5%, lowers floating-point operations by 31.3% and increases mean average precision at intersection over union = 0.5 (mAP0.5) by 2.8%. The proposed model not only improves detection accuracy but also decreases parameter counts, making it more suitable for deployment on edge devices.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"876-889"},"PeriodicalIF":4.9,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Threshold effect of residual catalyst on volume resistivity of polypropylene polymers 残余催化剂对聚丙烯聚合物体积电阻率的阈值效应

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-08-05 DOI: 10.1049/hve2.70073

Xinhua Dong, Zhen Luo, Tian Tan, Mingti Wang, Juan Li, Qi Zhang, Xiyu Zhang, Shangshi Huang, Yaru Zhang, Wei Wang, Qi Li, Jinliang He

{"title":"Threshold effect of residual catalyst on volume resistivity of polypropylene polymers","authors":"Xinhua Dong, Zhen Luo, Tian Tan, Mingti Wang, Juan Li, Qi Zhang, Xiyu Zhang, Shangshi Huang, Yaru Zhang, Wei Wang, Qi Li, Jinliang He","doi":"10.1049/hve2.70073","DOIUrl":"10.1049/hve2.70073","url":null,"abstract":"Polypropylene (PP) has become the focus of research and development of recyclable polymer dielectric materials because of its excellent electrical and thermal properties. The residual catalyst after PP polymerisation is the main part of ash. It was found that ash particles are uniformly dispersed in the PP matrix. The increase in ash content leads to a gradual decrease in their spacing, and leads to a significant decrease in electrical properties, with a difference of more than one order of magnitude for volume resistivity. The decrease in the ion migration potential barrier caused by the increase of ash content is the key factor in deteriorating the electrical properties of PP. The effect of ash on the electrical properties of PP mainly lies in enhancing the migration of ion carriers. The PP volume resistivity corresponds to an ash threshold of 292 ppm, above which the concentration leads to an increase in ion carriers. The accumulation of carriers leads to internal electric field distortion enhancing the transition ability of carriers and leading to a rapid decrease in the electrical properties of PP. This study provides a feasible reference for the development of high-performance PP insulation materials for power cables and other applications.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"939-952"},"PeriodicalIF":4.9,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of heavy load temperature rise on the dynamic charge transport characteristics of XLPE/SiR heterogeneous insulation 重载温升对XLPE/SiR非均质绝缘动态电荷输运特性的影响

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-07-31 DOI: 10.1049/hve2.70026

Yani Wang, Ruobing Xu, Pinshun Ren, Yalin Wang, Haobin Chen, Wenjun Wu, Xingwu Yang

{"title":"Effects of heavy load temperature rise on the dynamic charge transport characteristics of XLPE/SiR heterogeneous insulation","authors":"Yani Wang, Ruobing Xu, Pinshun Ren, Yalin Wang, Haobin Chen, Wenjun Wu, Xingwu Yang","doi":"10.1049/hve2.70026","DOIUrl":"10.1049/hve2.70026","url":null,"abstract":"The space charge accumulation in the heterogeneous insulation composed of cross-linked polyethylene (XLPE) cable and silicone rubber (SiR) accessory poses a serious threat to the safe operation of the high voltage direct current (HVDC) cable. When the cable is in heavy load, the charge transport behaviour in XLPE/SiR becomes more complicated due to the high temperature. In order to investigate the charge transport characteristics of XLPE/SiR under heavy load condition, the simultaneous measurement of space charge and relaxation current is performed on XLPE/SiR at both 70°C and 30°C with different polarities. The results show that the polarity of the interface charges in XLPE/SiR is always consistent with that of the SiR side electrode, and the influence of high temperature (70°C) caused by heavy load on the interface charge accumulation of XLPE/SiR is reversed at different polarities. The interface trap depth of XLPE/SiR is consistently greater than the bulk trap depths in both XLPE and SiR. When at high temperature of 70°C, the depth and density of interface traps increase, and the bulk traps in XLPE and SiR also exhibit increased depth. The component of polarisation relaxation current associated with space charge activity increases and exhibits longer decay time at 70°C, indicating more active and complex charge trapping-detrapping activities under heavy load condition. In this paper, an advanced simultaneous measurement is used to correlate the internal charge distribution with the external current for analysis, and the charge transport characteristics of XLPE/SiR under heavy load condition is revealed. The results can provide reference for the operation and maintenance of HVDC cable, and can also provide a basis for the space charge regulation of heterogeneous insulation at HVDC cable accessories.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"964-975"},"PeriodicalIF":4.9,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved flashover prediction for overhead lines: Considering ground stratification and insulation volt-time characteristics 改进的架空线路闪络预测：考虑地面分层和绝缘电压-时间特性

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-07-19 DOI: 10.1049/hve2.70056

Amin Foroughi Nematollahi, Behrooz Vahidi, Elaheh Saddat Ahmadi Mousavi

{"title":"Improved flashover prediction for overhead lines: Considering ground stratification and insulation volt-time characteristics","authors":"Amin Foroughi Nematollahi, Behrooz Vahidi, Elaheh Saddat Ahmadi Mousavi","doi":"10.1049/hve2.70056","DOIUrl":"10.1049/hve2.70056","url":null,"abstract":"This paper presents an approach to accurately forecast the yearly occurrence of flashovers caused by lightning-induced voltage in overhead power lines in the presence of layered ground. The aim is to improve the accuracy of flashover rate estimation by using the insulator volt-time model. In particular, two-layer horizontal ground structures are considered. A 3D finite element method is used to calculate induced voltages and a Monte Carlo simulation is applied to determine the annual flashover rate. Volt-time insulator characteristics are used to identify the flashover condition. The results are compared with those obtained by using the standard 1.5 times the critical flashover (CFO) threshold criterion. The results indicate that the conventional 1.5 times the CFO criterion may underestimate the rate of flashovers, particularly in regions with horizontally stratified soil, as the volt-time method offers a more accurate presentation of the flashover process. Furthermore, the effect of upper soil depth, upper soil conductivity, pole spacing, and different flashover distance calculation techniques on flashover rates are analysed. This paper presents a new mathematical formula for estimating yearly flashovers based on the results obtained by the volt-time method in the presence of stratified ground. The derived analytical formula provides an insightful tool for power system engineers to evaluate the lightning performance of overhead lines and implement efficient mitigation strategies.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"1061-1071"},"PeriodicalIF":4.9,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144915073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of micro-discharges fine dynamics via x-ray detection on the high voltage Padova test facility experiment 高压Padova试验装置实验中x射线检测微放电精细动力学分析

IF 4.9 2区工程技术

High Voltage Pub Date : 2025-07-10 DOI: 10.1049/hve2.70042

Federico Caruggi, Gabriele Croci, Stephanie Cancelli, Agostino Celora, Antonio De Lorenzi, Michele Fincato, Giuseppe Gorini, Giovanni Grosso, Federico Guiotto, Enzo Lazzaro, Luca Lotto, Nicola Pilan, Oscar Putignano, Silvia Spagnolo, Marco Tardocchi, Andrea Muraro

{"title":"Analysis of micro-discharges fine dynamics via x-ray detection on the high voltage Padova test facility experiment","authors":"Federico Caruggi, Gabriele Croci, Stephanie Cancelli, Agostino Celora, Antonio De Lorenzi, Michele Fincato, Giuseppe Gorini, Giovanni Grosso, Federico Guiotto, Enzo Lazzaro, Luca Lotto, Nicola Pilan, Oscar Putignano, Silvia Spagnolo, Marco Tardocchi, Andrea Muraro","doi":"10.1049/hve2.70042","DOIUrl":"10.1049/hve2.70042","url":null,"abstract":"The high voltage Padova test facility (HVPTF) is an experiment set in Padova, Italy, operating in the framework of the Neutral Beam Test Facility project of the International Thermonuclear Experimental Reactor (ITER). One of the purposes of HVPTF is to study the phenomenology of discharge events occurring between electrodes at high voltage differences over long vacuum gaps, which is crucial in the development of the neutral beam injector foreseen for ITER. The facility hosts a cylindrical vacuum vessel with stable pressure control, where two electrodes of different possible geometries can be mounted. Two independent power supplies allow for total voltage differences up to 800 kVDC with adjustable gap widths up to 250 mm. Among the diagnostics, a gas electron multiplier (GEM) detector is installed for acquisition of x-ray emission on a radial line of sight of the vessel. This paper presents a study of the experimental sessions featuring stainless-steel needle-plane electrodes. The analysis is based on the GEM data, in relation to the information on current and voltage of the two power supplies. The events are characterised in terms of both temporal and spatial evolution, providing sequential emission profiles with spatial resolution of tens of millimetres on timescales of the order of hundreds of nanoseconds.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 4","pages":"1043-1052"},"PeriodicalIF":4.9,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0