High Voltage最新文献_第9页

A new type of lipophilic hydrophobic self-repairing cellulose insulating paper developed with ST-110/FAS/PTFE ternary system as coating substrate 以ST-110/FAS/PTFE三元体系为涂层基材，研制了一种新型亲脂疏水自修复型纤维素绝缘纸

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-11-09 DOI: 10.1049/hve2.12383

Zhenglin Zeng, Jinshan Qin, Zuhao Wang, Weimin Tan, Chao Tang

{"title":"A new type of lipophilic hydrophobic self-repairing cellulose insulating paper developed with ST-110/FAS/PTFE ternary system as coating substrate","authors":"Zhenglin Zeng, Jinshan Qin, Zuhao Wang, Weimin Tan, Chao Tang","doi":"10.1049/hve2.12383","DOIUrl":"10.1049/hve2.12383","url":null,"abstract":"The moisture generated by the ageing of the oil-paper insulating system can easily lead to the deterioration of the performance of the insulating paper. In order to alleviate the impact of moisture on the performance of the insulating paper, we developed a kind of lipophilic hydrophobic self-repairing cellulose insulating paper (new insulating paper) based on the ternary system of polytetrafluoroethylene, fluorocarbon surfactant and fluorinated alkyl silane, and accelerated thermal ageing test for 45 days at 130°C was carried out. The experimental results show that the new insulating paper with excellent lipophilic property can realise hydrophobic self-repairing through heat treatment after physical damage. The tensile strength and elongation at break of the new insulating paper increased by 5%–8% and 6.25%–27% respectively compared with the original cellulose insulating paper. At the end of ageing, the relative dielectric constant and dielectric loss factor of new insulating paper are 10.4% and 9.9% lower than that of the original cellulose insulating paper, while the breakdown voltage is 6.8% higher. The acid and moisture content produced during the ageing process of the insulating oil impregnated with new insulating paper are also less, indicating that the coating can delay the ageing of the insulating paper.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12383","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91398380","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

On the chronological understanding of the homogeneous dielectric barrier discharge 对均质介质势垒放电的时序理解

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-24 DOI: 10.1049/hve2.12382

Xinpei Lu, Zhi Fang, Dong Dai, Tao Shao, Feng Liu, Cheng Zhang, Dawei Liu, Lanlan Nie, Chunqi Jiang

{"title":"On the chronological understanding of the homogeneous dielectric barrier discharge","authors":"Xinpei Lu, Zhi Fang, Dong Dai, Tao Shao, Feng Liu, Cheng Zhang, Dawei Liu, Lanlan Nie, Chunqi Jiang","doi":"10.1049/hve2.12382","DOIUrl":"10.1049/hve2.12382","url":null,"abstract":"Dielectric barrier discharges (DBD) are widely utilised non-equilibrium atmospheric pressure plasmas with a diverse range of applications, such as material processing, surface treatment, light sources, pollution control, and medicine. Over the course of several decades, extensive research has been dedicated to the generation of homogeneous DBD (H-DBD), focussing on understanding the transition from H-DBD to filamentary DBD and exploring strategies to create and sustain H-DBD. This paper first discusses the influence of various parameters on DBD, including gas flow, dielectric material, surface conductivity, and mesh electrode. Secondly, a chronological literature review is presented, highlighting the development of H-DBD and the associated understanding of its underlying mechanisms. This encompasses the generation of H-DBD in helium, nitrogen, and air. Lastly, the paper provides a brief overview of multiple-current-pulse (MCP) behaviours in H-DBD. The objective of this article is to provide a chronological understanding of homogeneous dielectric barrier discharge (DBD). This understanding will aid in the design of new experiments aimed at better comprehending the mechanisms behind H-DBD generation and ultimately assist in achieving large-volume H-DBD in an air environment.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135315806","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 fuse-based DC circuit breaker with vacuum interrupter enhanced by an external transverse magnetic field 带真空灭弧室的熔断器式直流断路器，通过外部横向磁场增强功能

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-18 DOI: 10.1049/hve2.12380

Yu Xiao, Yi Wu, Yifei Wu, Fei Yang, Mingzhe Rong, Zhuo Yang

引用次数: 0

Mitigation of Deane and Hamill phenomenon in gallium nitride high-voltage power supply for electric propulsion system application 缓解用于电力推进系统的氮化镓高压电源中的 Deane 和 Hamill 现象

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-16 DOI: 10.1049/hve2.12379

Minghai Dong, Hui Li, Shan Yin, Kye Yak See, Yingzhe Wu, Xiong Xin

{"title":"Mitigation of Deane and Hamill phenomenon in gallium nitride high-voltage power supply for electric propulsion system application","authors":"Minghai Dong, Hui Li, Shan Yin, Kye Yak See, Yingzhe Wu, Xiong Xin","doi":"10.1049/hve2.12379","DOIUrl":"10.1049/hve2.12379","url":null,"abstract":"The step-up resonant converters are widely adopted to provide high voltage in kV-level for electric propulsion system due to their high efficiency, low mass, modularisation, and high-power density. The bipolar Cockcroft-Walton voltage multiplier (BiCWVM) is a major circuit that steps up the voltage in the resonant converter. However, the diode non-linearity in BiCWVM can introduce self-sustained quasi-periodic oscillations in the voltage and current waveforms, which is commonly known as the Deane and Hamill (DH) phenomenon. The oscillation can lead to higher magnetic loss and control failure, and it is more likely to present in the gallium nitride-based converter due to the high-frequency operation. The authors aim to investigate and mitigate the DH phenomenon systematically so that proper mitigation can be implemented. To facilitate the investigation, the circuit before the BiCWVM in the converter is derived and modelled as a voltage source vm and a series inductor Lsy. Also, the reverse recovery process of the diode in the BiCWVM can be represented by a piecewise-linear (PWL) model, with the simplified circuit and PWL model, the relationship between voltage and current under different operating conditions can be determined with ease. The relationship allows to understand the mechanism of diode reverse recovery in BiCWVM that leads to DH phenomenon. Finally, a hybrid-/full-silicon carbide (SiC) design is proposed to mitigate the DH phenomenon, which is verified experimentally for a 300-kHz, 5-W, 20-V/1.5-kV GaN-based step-up resonant converter.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697408","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

Recent applications in dielectric barrier discharge and radio frequency plasmas-engineered transition metal electrocatalysts for water splitting 介质阻挡放电和射频等离子体中的最新应用--用于水分离的工程过渡金属电催化剂

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-13 DOI: 10.1049/hve2.12378

Guangliang Chen, Bin He, Yuxin Wang, Pengchen He, Liguang Dou, Renwu Zhou, Dongliang Chen, Tao Shao

{"title":"Recent applications in dielectric barrier discharge and radio frequency plasmas-engineered transition metal electrocatalysts for water splitting","authors":"Guangliang Chen, Bin He, Yuxin Wang, Pengchen He, Liguang Dou, Renwu Zhou, Dongliang Chen, Tao Shao","doi":"10.1049/hve2.12378","DOIUrl":"10.1049/hve2.12378","url":null,"abstract":"Hydrogen generated by water electrolysis is considered as one of the most promising protocols to partly replace the roles of traditional fossil fuels. However, high-performance electrocatalyst satisfied with the industrial requirement still faces significant challenges. Low-temperature plasma contains numerous high-energy ions, electrons and other reactive species, which can provide a highly reactive environment for tuning the physio-chemical structures of catalysts through plasma milling, etching, doping and/or deposition. It is well-known that high-temperature micro-filaments contained in plasmas can cause some special modifications of the catalyst surface, thus effectively adjusting the physio-chemical structure of latterly engineered compounds. Therefore, low-temperature plasma technologies, especially the dielectric barrier discharge (DBD) and radio frequency (RF) plasmas, can be considered as a green and sustainable strategy for engineering high-performance electrocatalysts for water splitting (hydrogen evolution reaction [HER]; oxygen evolution reaction [OER]). Herein, recent progress of DBD and RF plasmas for fabricating and modifying transition metal-based electrocatalysts (e.g. sulphide, phosphide, selenide, oxide, hydroxide) for hydrogen evolution reaction or OER is comprehensively reviewed, and the role of plasma is also discussed.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12378","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697426","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

Acoustic carrier signal transmission technology and its potential for in-site monitoring of sliding electrical contact used in gas-insulated switchgear/gas-insulated transmission line 声载波信号传输技术及其用于现场监测气体绝缘开关设备/气体绝缘输电线路中使用的滑动电气触点的潜力

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-13 DOI: 10.1049/hve2.12377

Chen Chen, Yutong Zhang, Huijun Zhao, Zongren Peng, Qingyu Wang

{"title":"Acoustic carrier signal transmission technology and its potential for in-site monitoring of sliding electrical contact used in gas-insulated switchgear/gas-insulated transmission line","authors":"Chen Chen, Yutong Zhang, Huijun Zhao, Zongren Peng, Qingyu Wang","doi":"10.1049/hve2.12377","DOIUrl":"10.1049/hve2.12377","url":null,"abstract":"A wireless signal transmission technology based on acoustic carrier is proposed, which overcomes the limitation of electromagnetic signal shielding and shows great potential for in-site monitoring of sliding electrical contact used in gas-insulated switchgear (GIS)/gas-insulated transmission line (GIL). Here, the state parameter of the sliding electrical contact is modulated onto the frequency domain of an ultrasound wave. As a mechanical wave, the ultrasonic wave is immune to electromagnetic shielding, so that it could carry the sensing signal to penetrate the metal shielding layer and transmit to the external terminals of GIS/GIL. The principle and signal modulation process of the acoustic carrier based transmission system have been demonstrated in detail. Both simulation and experiment have been conducted to analyse the system characteristics as well as optimise the system configuration. As a proof-of-concept application, the in situ and on-line monitoring of the thermal rise of a slide electrical contact both in a current loading equivalent model and a prototype of GIS is demonstrated. Experimental results fit well with the physical process, and show a good measurement accuracy of 0.6% and temperature sensitivity of 400 Hz/°C.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697425","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

Study on surface discharge of nonlinear conductive epoxy resin/SrTiO3 composites in 80–300 K temperature zone 80-300 K 温区非线性导电环氧树脂/SrTiO3 复合材料的表面放电研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-10-12 DOI: 10.1049/hve2.12381

Yunqi Xing, Bin Wang, Mingyang Wang, Jiakai Chi, Peng Jia, Rongjin Huang

{"title":"Study on surface discharge of nonlinear conductive epoxy resin/SrTiO3 composites in 80–300 K temperature zone","authors":"Yunqi Xing, Bin Wang, Mingyang Wang, Jiakai Chi, Peng Jia, Rongjin Huang","doi":"10.1049/hve2.12381","DOIUrl":"10.1049/hve2.12381","url":null,"abstract":"Bisphenol F epoxy resin (EP) is often used in terminal current lead insulation of superconducting equipment because of its good insulation performance, high mechanical strength, good toughness at cryogenic temperatures, and resistance to cold shock and heat shock. However, due to the wide temperature range of 80–300 K and the strong electric field, the EP-N2 interface is prone to surface flashover, resulting in terminal insulation failure. To improve the reliability of the current lead insulation, non-linear conductive EP/strontium titanate (SrTiO3) composites were prepared by modification with nano filling. The changes of dielectric, surface discharge, flashover, and trap distribution characteristics of composite materials were studied, and the mechanism of SrTiO3 on the surface flashover of composite materials was analysed. The results show that the conductivity of the composite increases with the rise of SrTiO3 filling content, and the amplitude of improvement is greater under the strong electric field, showing a more significant non-linearity. The composite has a lower trap energy level and a greater number of shallow traps compared to pure EP, which accelerates surface charge de-trapping and reduces charge accumulation, effectively enhancing the discharge and surface flashover voltage of the composite.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12381","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697427","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

Voltage rise rate-related generalised probabilistic lifetime model of turn-to-turn insulation in inverter-fed motors 变频电机匝间绝缘的电压上升率相关广义概率寿命模型

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-09-22 DOI: 10.1049/hve2.12375

Yan Yang, Xueyang Bai, Yuxing Lei, Kai Liu, Guangning Wu

引用次数: 0

Ag-doped Ti3C2Tx sensor: A promising candidate for low-concentration H2S gas sensing 掺银 Ti3C2Tx 传感器：有望用于低浓度 H2S 气体传感的候选器件

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-09-22 DOI: 10.1049/hve2.12376

Fuping Zeng, Xiaoxuan Feng, Xiaoyue Chen, Hao Qiu, Yiming Yan, Qiang Yao, Ju Tang

{"title":"Ag-doped Ti3C2Tx sensor: A promising candidate for low-concentration H2S gas sensing","authors":"Fuping Zeng, Xiaoxuan Feng, Xiaoyue Chen, Hao Qiu, Yiming Yan, Qiang Yao, Ju Tang","doi":"10.1049/hve2.12376","DOIUrl":"10.1049/hve2.12376","url":null,"abstract":"Trace hydrogen sulphide (H2S) could reflect the severity of insulation faults in gas-insulated switchgear (GIS), therefore, accurate and fast detection of low-concentration H2S is important for on-line monitoring, fault diagnosis, and state evaluation in GIS. Ag-Ti3C2Tx chemiresistive-type sensors were fabricated via drop-coating with self-reduction synthesised Ag-doped Ti3C2Tx. The as-prepared sensors exhibited an excellent sensitivity and selectivity to H2S with an extremely low detection of limit of 18.57 parts per billion (ppb) at 25°C (room temperature). The response of Ag-Ti3C2Tx sensor to 10 parts per million (ppm) H2S was enhanced ∼12 times than that of the pristine Ti3C2Tx sensor. The compositing of Ti3C2Tx with Ag nanoparticles (NPs) enabled the fast response/recovery time for H2S detection. Further analysis found that the enhanced H2S sensing performances could be attributed to chemical sensitisation, adsorbed oxygen species regulation and high Brunauer–Emmett–Teller (BET) surface area. This study paves the way for Ag-Ti3C2Tx as room-temperature sensing materials to detect low-concentration H2S in GIS.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12376","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697429","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

Experimental study on ice monitoring method for 10 kV transmission line with tangent tower in alpine landform 高山地貌切线塔 10 千伏输电线路覆冰监测方法试验研究

IF 4.4 2区工程技术

High Voltage Pub Date : 2023-09-09 DOI: 10.1049/hve2.12372

Lin Yang, Zhiqiang Chen, Yanpeng Hao, Xinhao Lin, Lei Yu, Yue Li, Zhiyong Yuan, Licheng Li

{"title":"Experimental study on ice monitoring method for 10 kV transmission line with tangent tower in alpine landform","authors":"Lin Yang, Zhiqiang Chen, Yanpeng Hao, Xinhao Lin, Lei Yu, Yue Li, Zhiyong Yuan, Licheng Li","doi":"10.1049/hve2.12372","DOIUrl":"10.1049/hve2.12372","url":null,"abstract":"Ice monitoring methods were applied for 110 kV and above transmission lines with tangent towers. However, the change in the vertical span is not considered, and a significant difference lies in the tower-conductor structure of 10 kV transmission lines. For this reason, a proposal is made about the ice monitoring method for the 10 kV transmission line with tangent tower in alpine landform, which includes the ice monitoring system based on pressure measurement and corresponding equivalent ice thickness calculating methods. Different methods calculate the vertical span under different height difference coefficients. A finite element simulation model and a simulated ice load experiment system are established based on real conductors and insulators. Experiments and simulations under four simulated terrains are conducted within 2.5–20 mm ice thickness range. The comparison is made between this method and the method without considering the change in vertical span. The results show that the two methods are consistent and the relative errors are lower than ±4% in simulation and ±10% in experiment when the height difference coefficient is 0. When it is not 0, the relative errors of this method fall between +0.38% and +6.78% in simulation and −6.40% to +6.60% in experiment, while the relative errors of the method without considering the change in vertical span ranges between −11.13% and −20.23% in simulation and −11.65% to −23.20% in experiment.","PeriodicalId":48649,"journal":{"name":"High Voltage","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/hve2.12372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697430","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