High Voltage最新文献_第2页

Repair of defects in buffer layer of high voltage cable based on additive liquid silicone rubber material 添加剂型液态硅橡胶材料修复高压电缆缓冲层缺陷

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-04-11 DOI: 10.1049/hve2.70021

Wenqing Zhou, Qihao Xiao, Yanyang Yin, Xiaodong Liu, Licheng Li, Gang Liu

{"title":"Repair of defects in buffer layer of high voltage cable based on additive liquid silicone rubber material","authors":"Wenqing Zhou, Qihao Xiao, Yanyang Yin, Xiaodong Liu, Licheng Li, Gang Liu","doi":"10.1049/hve2.70021","DOIUrl":"https://doi.org/10.1049/hve2.70021","url":null,"abstract":"In recent years, the issue of defects in the buffer layers of high-voltage cables has garnered significant attention due to their widespread occurrence and the substantial potential damages they pose. Although progress has been made in understanding the mechanisms behind these defects and in developing detection methods, effective repair solutions remain limited. This study addresses this challenge by proposing a novel repair material: a two-component, additive liquid silicone rubber-based compound that utilises vinyl silicone oil as its base. The electrical, thermal, and mechanical properties of the cured silicone-based repair fluid are thoroughly analysed. To evaluate its effectiveness, an experimental platform was constructed using a 17-m-long, 110 kV retired cable with known buffer layer defects. A specialised injection process was developed to facilitate the application of the repair fluid. The thermal characteristics, buffer layer voltage distribution, and partial discharge behaviour of the defective cable were analysed both before and after the repair. The results indicate that following the repair, the cable's heat dissipation capacity under full load increased by 6.25%. Additionally, the buffer layer voltage at the rated voltage (U0) decreased from 1.97 to 0.34 V, representing an 82.74% reduction. Notably, no partial discharge signals exceeding background noise were detected post-repair. This study demonstrates the effectiveness of the addition-cure liquid silicone rubber-based semi-conductive material in repairing cable buffer layer defects and provides valuable experimental support for its practical application in engineering.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"316-324"},"PeriodicalIF":4.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892792","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

Ice thickness/density measurement method based on its capacitance effect 基于其电容效应的冰厚/密度测量方法

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-04-11 DOI: 10.1049/hve2.70016

Lina Dong, Zhijin Zhang, Hualong Zheng, Guolin Yang, Jianlin Hu, Lichun Shu, Xingliang Jiang

{"title":"Ice thickness/density measurement method based on its capacitance effect","authors":"Lina Dong, Zhijin Zhang, Hualong Zheng, Guolin Yang, Jianlin Hu, Lichun Shu, Xingliang Jiang","doi":"10.1049/hve2.70016","DOIUrl":"https://doi.org/10.1049/hve2.70016","url":null,"abstract":"In winter, the ice-covered conductors pose a significant influence to the safe operation of power grids. Despite extensive research in this area, measuring on-site ice accurately remains a major challenge. Obtaining accurate data of ice thickness and density is the basis of ice disaster prevention and emergency treatment of power grids. The current measurement methods based on power line's tension and insulator string's inclination or video image are commonly used at power grids, which cannot accurately monitor the actual ice thickness, and also cannot measure ice density. Based on long-term natural icing field observations and extensive simulation tests conducted in the artificial climate chamber, this paper puts forward a new method for monitoring the ice thickness and density using the capacitance effect of ice layers due to their dielectric characteristics. Theoretical analysis and testing results demonstrate that the capacitance of an ice layer steadily increases with both increasing thickness and density, which can be used for accurate determination of changes of both the parameters mentioned above. Therefore, the proposed method based on the capacitance effect of ice layer on power lines can be used to monitor the ice thickness and density of power lines accurately.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"400-410"},"PeriodicalIF":4.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892791","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

Research on digital twin modelling technique for ±800 kV converter transformers scene based on hybrid attention mechanism and multiresolution hash encoding 基于混合注意机制和多分辨率哈希编码的±800 kV换流变压器场景数字孪生建模技术研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-04-08 DOI: 10.1049/hve2.70019

Hao Luo, Li Cheng, Pengyong Yi, Jiuyi Wang, Xuetong Zhao, Lijun Yang, Ruijin Liao

{"title":"Research on digital twin modelling technique for ±800 kV converter transformers scene based on hybrid attention mechanism and multiresolution hash encoding","authors":"Hao Luo, Li Cheng, Pengyong Yi, Jiuyi Wang, Xuetong Zhao, Lijun Yang, Ruijin Liao","doi":"10.1049/hve2.70019","DOIUrl":"https://doi.org/10.1049/hve2.70019","url":null,"abstract":"Digital twin (DT) modelling is a prerequisite for the successful application of DT technology in the power industry. However, traditional scene modelling methods are costly, time-consuming, focus on overall features and lack real-time updates, hindering the interaction between DT models and physical power equipment scenes. Therefore, a scene DT modelling technique focusing on local features in risk areas and real-time updates is urgently needed. Herein, real-time modelling of the ±800 kV converter transformer is achieved by improving the neural radiation field based on a hybrid attention mechanism and multiresolution hash encoding. Compared to traditional methods, modelling time is reduced from hours to 1 min without professional equipment or manual intervention. The model quality is more concerned with local features of risk areas in transformers while ensuring the overall scene, and the accuracy is improved by about 6%, realising the real-time modelling of transformers and the DT of scenes.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"294-304"},"PeriodicalIF":4.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892990","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

Fabrication of insulation spacers for ultra-high voltage gas-insulated switchgear using eco-friendly bio-based epoxy composite material characterisation evaluation 用环保型生物基环氧复合材料制造超高压气体绝缘开关柜绝缘垫片的性能评价

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-04-03 DOI: 10.1049/hve2.70000

Chanyong Lee, Yohan Noh, Hangoo Cho, Jaehyeong Lee

{"title":"Fabrication of insulation spacers for ultra-high voltage gas-insulated switchgear using eco-friendly bio-based epoxy composite material characterisation evaluation","authors":"Chanyong Lee, Yohan Noh, Hangoo Cho, Jaehyeong Lee","doi":"10.1049/hve2.70000","DOIUrl":"https://doi.org/10.1049/hve2.70000","url":null,"abstract":"In the electric power equipment industry, various insulating materials and accessories are manufactured using petroleum-based epoxy resins. However, petrochemical resources are gradually becoming limited. In addition, the global surge in plastic usage has consistently raised concerns regarding greenhouse gas emissions, leading to worsening global warming. Therefore, to facilitate eco-friendly policies, industrialising epoxy systems applicable to high-pressure components using bio-based epoxy composites is essential. The results of the characterisation conducted in this research regarding bio-content were confirmed through thermogravimetric analysis and differential scanning calorimetry, which showed that as the bio-content increased, the thermal stability improved. Considering the operating temperature of 105°C for the insulation spacer, structurally, no issues would be encountered if the spacer was manufactured with a bio-content of 20% (bio 20%). Subsequent tensile and flexural strength measurements revealed mechanical properties equivalent to or better than those of their petroleum-based counterparts. The impact strength tended to decrease with increasing bio-content. Analysing the dielectric properties confirmed that the epoxy composite containing 20% biomaterial is suitable for manufacturing insulation spacers. Subsequently, a series of tests conducted after spacer fabrication confirmed the absence of internal metals and bubbles with no external discolouration or cracks observed.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"451-457"},"PeriodicalIF":4.4,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892970","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

Incident energy determination of three-phase arc flash using magnetohydrodynamics simulations: A case study for horizontal electrodes in open-air configurations 利用磁流体动力学模拟确定三相电弧闪光的入射能量：露天结构中水平电极的案例研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-03-17 DOI: 10.1049/hve2.70009

Pedro O. Bacin, Mateus F. Fava, Rodolfo P. Londero, Tiago B. Marchesan, Vitor C. Bender, Rafael C. Beltrame, Daniel P. Bernardon, Carlos Eduardo G. Falcão, Carlos A. Simões, Gilnei José G. Santos

{"title":"Incident energy determination of three-phase arc flash using magnetohydrodynamics simulations: A case study for horizontal electrodes in open-air configurations","authors":"Pedro O. Bacin, Mateus F. Fava, Rodolfo P. Londero, Tiago B. Marchesan, Vitor C. Bender, Rafael C. Beltrame, Daniel P. Bernardon, Carlos Eduardo G. Falcão, Carlos A. Simões, Gilnei José G. Santos","doi":"10.1049/hve2.70009","DOIUrl":"https://doi.org/10.1049/hve2.70009","url":null,"abstract":"Arc flashes pose significant hazards to personnel working with energised power lines due to their high thermal risk, quantified by incident energy (IE) in joules or calories per area. Accurate estimation of IE is crucial for ensuring safety. The most widely employed method for estimating IE from an arc flash is outlined in IEEE Std 1584-2018, which applies exclusively to three-phase AC arc flashes. However, limited research has explored alternative methods due to the complexities, costs, and preparation involved. Numerical simulations offer a viable alternative for studying arc flashes. This paper introduces a multiphysics simulation approach for determining IE by modelling three-phase AC arc flashes using the magnetohydrodynamics (MHD) theory. This study exclusively investigates horizontal electrodes in open-air (HOA) configuration due to the specific characteristics of the local power system configuration, which predominantly features overhead power lines, and the available test setup in the laboratory. The IE derived from simulations is compared with measurements from an arc flash laboratory based on IEEE Std 1584-2018 and with the IE calculated by the standard itself. The results indicate a significant alignment between this innovative approach and other methods for estimating IE for three-phase arc flashes.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"436-450"},"PeriodicalIF":4.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892986","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

Modelling and analysis of transformers considering ultra-wide band frequency-dependent parameters for high altitude electromagnetic pulse 考虑高空电磁脉冲超宽带频率相关参数的变压器建模与分析

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-03-14 DOI: 10.1049/hve2.12517

Han Wu, Nan Zhang, Jinhua Du, Junna Li, Shuai Dong, Zitao Lv

{"title":"Modelling and analysis of transformers considering ultra-wide band frequency-dependent parameters for high altitude electromagnetic pulse","authors":"Han Wu, Nan Zhang, Jinhua Du, Junna Li, Shuai Dong, Zitao Lv","doi":"10.1049/hve2.12517","DOIUrl":"https://doi.org/10.1049/hve2.12517","url":null,"abstract":"Transformers are widely distributed and extremely important energy conversion equipment in the power system. However, the high altitude electromagnetic pulse (HEMP) can induce a steep pulse voltage with a peak value of up to thousands of kilovolts on the overhead line, and the frequency is up to 100 MHz, which is easy to damage the transformer and seriously threaten the safe and stable operation of the power system. Therefore, to protect the safety of the power system, analysing the transformer wave process under the action of HEMP is necessary. Accordingly, there is a need for an ultra-wide band model of the transformer. In this paper, the skin effect of winding is analysed, the dielectric response of oil-paper is fitted with the double relaxation Cole–Cole model, and the frequency dependent models of distribution parameters are established. Fractional order terms are introduced into the traditional multi-conductor transmission line (MTL) integer order model to describe the characteristics of these distribution parameters so that the frequency application range of the MTL model is extended to 100 MHz. The proposed MTL model is solved by the finite-difference time-domain algorithm and verified by the finite element method and experiment. The error is less than 5%, which verifies its accuracy and effectiveness.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"374-384"},"PeriodicalIF":4.4,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12517","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892930","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

An experimental proof of concept of time-reversal single-sensor acoustic source localisation: Application to partial discharges 时间反转单传感器声源定位概念的实验证明：应用于局部放电

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-03-05 DOI: 10.1049/hve2.70008

Hamidreza Karami, Zhaoyang Wang, Parsa Khorasani, Javad Zohrevand, Marcos Rubinstein, Farhad Rachidi

{"title":"An experimental proof of concept of time-reversal single-sensor acoustic source localisation: Application to partial discharges","authors":"Hamidreza Karami, Zhaoyang Wang, Parsa Khorasani, Javad Zohrevand, Marcos Rubinstein, Farhad Rachidi","doi":"10.1049/hve2.70008","DOIUrl":"https://doi.org/10.1049/hve2.70008","url":null,"abstract":"In this paper, for the first time, an experimental proof of concept for utilising time reversal (TR) in the acoustic regime to localise partial discharge (PD) sources was presented using a single sensor. To achieve this, an experimental setup comprising a water tank, acoustic transducers for signal transmission and reception, and 2D scanners was developed. The performance of the proposed method was evaluated across various scenarios, encompassing different PD source locations and sensor placements, barriers obstructing the line of sight between the receiving sensor and PD sources, varying levels of noise, and different frequency bandwidths for the PD sources. The experimental results demonstrate a near-zero localisation error in all considered examples. The achieved resolution was approximately half of the minimum wavelength. Furthermore, the acoustic TR method exhibits remarkable precision in source localisation, even when faced with obstacles such as a multi-layered metallic cylinder and in scenarios lacking a direct line of sight between the sensor and the source. The accuracy of acoustic TR's localisation remained robust in the presence of noise, showcasing resilience at signal-to-noise ratio levels as low as −20 dB. Additionally, the performance of the acoustic TR method remained consistent across a broad frequency spectrum, spanning from 60 to 200 kHz.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"351-361"},"PeriodicalIF":4.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892893","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

Severity assessment of local ageing defects in cross-linked polyethylene cables based on the high-voltage frequency domain spectroscopy non-linearity and its sensitivity analysis 基于高压频域谱非线性及其灵敏度分析的交联聚乙烯电缆局部老化缺陷严重性评估

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.12518

Haoyue Wang, Meng Li, Yiyi Zhu, Jinghan He, Chengrong Li, Xiaowei Wang, Maolun Sun

{"title":"Severity assessment of local ageing defects in cross-linked polyethylene cables based on the high-voltage frequency domain spectroscopy non-linearity and its sensitivity analysis","authors":"Haoyue Wang, Meng Li, Yiyi Zhu, Jinghan He, Chengrong Li, Xiaowei Wang, Maolun Sun","doi":"10.1049/hve2.12518","DOIUrl":"https://doi.org/10.1049/hve2.12518","url":null,"abstract":"Local ageing defects are the main causes of cross-linked polyethylene (XLPE) power cable faults. This research aims at assessing the severity level of typical cable local ageing defects based on the high-voltage frequency domain spectroscopy (FDS) non-linearity. Experimentally, typical XLPE cables ageing defect conditions are simulated, with different ageing types, degrees, and local proportions. Then, the high-voltage FDS detection is conducted and the results have been analysed. It has been found that the high-voltage FDS non-linearity is only related to the detection voltage and ageing degree. Especially, it is more sensitive to changes in the ageing severity. Thus, the local ageing defect severity assessment method based on non-linearity has been established. Additionally, the sensitivity has been compared between two diagnostic evaluation methods: the high-voltage FDS and the widely used very-low frequency method (VLF, 0.1 Hz). It can be concluded from the comparison result that the proposed assessment method has higher sensitivity than that of the traditional methods. Finally, the effectiveness of the proposed method for evaluating the on-site long cables has been validated. The result demonstrates that the proposed method can assess on-site long cables and has the potential to be formed as quantitative standards.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"385-399"},"PeriodicalIF":4.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892904","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

Infrared image-based multi-point temperature monitoring for ultra-high-voltage direct current wall bushings subject to insulation shed interference 基于红外图像的绝缘棚干扰超高压直流套管多点温度监测

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.70007

Huajie Liang, Ziyou Li, Zhaocong Liu, Qiang Li, Shihong Zhang, Zhenyu Zhang, Jinxiong Wang, Jianbo Jiang, Chichun Zhou

{"title":"Infrared image-based multi-point temperature monitoring for ultra-high-voltage direct current wall bushings subject to insulation shed interference","authors":"Huajie Liang, Ziyou Li, Zhaocong Liu, Qiang Li, Shihong Zhang, Zhenyu Zhang, Jinxiong Wang, Jianbo Jiang, Chichun Zhou","doi":"10.1049/hve2.70007","DOIUrl":"https://doi.org/10.1049/hve2.70007","url":null,"abstract":"Ultra-high-voltage direct current wall bushings are critical components in direct current transmission systems. Temperature variations and abnormal distributions can signal potential equipment failures that threaten system stability. Therefore, monitoring these critical multi-point temperature variations is essential. However, the unique design of the bushings, featuring insulation sheds of periodic shape, distorts infrared temperature measurements by introducing interference points. These interference points, dependent on the measurement's angle and distance, appear irregularly in infrared images, severely impacting the accuracy of multi-point temperature distribution assessments. To address this challenge, an anomaly detection method is proposed that adaptively identifies interference points. The method identifies interference points by comparing pixels and uses a voting mechanism to improve identification accuracy. Compared with traditional methods, this approach presents two main advantages: adaptive identification capability, which enables it to recognise interference points and adapt to changing conditions, and unsupervised learning, which enables it to work effectively without requiring manually labelled data. Experimental tests on 161 bushing infrared images demonstrate the effectiveness of the method, achieving a 100% success rate in identifying localised overheating issues. The method has been integrated into high-voltage direct current transmission anomaly systems and can be used to monitor critical equipment, enhancing system reliability and safety.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"411-418"},"PeriodicalIF":4.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892905","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

Unveiling first self-healing in metallised film capacitor: A macro–micro analysis 首次揭示金属薄膜电容器的自愈：宏观-微观分析

IF 4.4 2区工程技术

High Voltage Pub Date : 2025-02-24 DOI: 10.1049/hve2.70005

Yushuang He, Feipeng Wang, Guoqiang Du, Lei Pan, Jian Li, Hongming Yang, Xiao Zhang, Zhicheng Zhang, Kaizheng Wang

{"title":"Unveiling first self-healing in metallised film capacitor: A macro–micro analysis","authors":"Yushuang He, Feipeng Wang, Guoqiang Du, Lei Pan, Jian Li, Hongming Yang, Xiao Zhang, Zhicheng Zhang, Kaizheng Wang","doi":"10.1049/hve2.70005","DOIUrl":"https://doi.org/10.1049/hve2.70005","url":null,"abstract":"Metallised film capacitors (MFCs) are renowned for their unique self-healing (SH) properties, which bestow them with exceptional reliability and stability in the face of intense electric fields, high voltages, and pulse power applications. Nonetheless, the exploration of SH characteristics concerning single-layer dielectric film remains insufficient for advancing MFC reliability evaluation. To establish the theoretical correlation of SH characteristics from the device to the film in the MFCs, this work developed a simulation model to analyse the SH dynamic behaviour in the MFCs. The effects of coupling capacitors, arc resistance and insulation resistance on the macroscopic characteristics (voltage drop and pulse current) are focused during the SH process in MFCs. The results indicate that SH is primarily associated with the voltage drop duration rather than the sampling current. Consequently, the SH process in MFC is characterised as an abrupt decrease in voltage to its minimum value. This refinement enhances the SH energy dissipation model of MFC. The quantified relationship between the macroscopic characteristics and microstructure evolution (polypropylene decomposition and aluminium electrode vaporisation) is established in MFCs under diverse SH energy levels. As SH energy and duration increase, the proportion of energy attributed to polypropylene decomposition increases, resulting in multi-layer ablation and adhesion within the metallised film and a pronounced deterioration in MFC electrical performance. The examination of macro–micro perspectives sheds new light on the intricate mechanisms governing the SH behaviour in MFCs, offering valuable insights for the advancement of their design, reliability evaluation, and performance optimisation in diverse electrical applications.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":"10 2","pages":"362-373"},"PeriodicalIF":4.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892906","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