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基于红外检测的GIS内部过热缺陷严重程度的评估方法研究

open access: yesGaoya dianqi, 2018
为研究基于红外检测的GIS内部过热缺陷严重程度的评估方法,分别在母线三相共箱结构GIS腔体内的A相和B相设置"工"字形导体,模拟GIS内部导体接触不良引起的过热缺陷,开展了不同电流下的GIS温升实验。实验中,采用电子式测温技术和红外测温技术分别对GIS内部导体以及壳体的温度进行测量。实验结果表明,模拟缺陷分别设置于A相和B相时,前者内部导体和壳体的温升均高于后者。内部导体和壳体的温升在轴向上呈现出先升高后降低的变化趋势,模拟缺陷处的温升值最大。通过分析内部导体和壳体的温升关系 ...
刘凯   +4 more
doaj  

h‐BN/HfO2 Interface‐Enabled Optoelectronic Doping for Low‐Voltage, Reconfigurable MoTe2 Nanoelectronics

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Engineering the semiconductor/dielectric interface is crucial for advancing two‐dimensional (2D) nanoelectronics, where device performance is predominantly governed by interfacial defects and dielectric coupling. Optoelectronic doping based on carrier trapping at the h‐BN/SiO2 interface has enabled non‐volatile and reversible carrier ...
Zhe Zhang   +6 more
wiley   +1 more source

检测GIS固体绝缘内部放电缺陷的特高频和X射线数字成像联合方法研究

open access: yesGaoya dianqi, 2017
相比超声波局部放电检测法,特高频局部放电检测法对GIS固体绝缘内部放电缺陷检测灵敏度和定位精度较高,但由于无法确证此类缺陷部位和类型,据此制定的设备检修策略难以保证完善、准确。因此,本文研究了特高频局部放电和X射线数字成像联合检测GIS固体绝缘内部放电缺陷的方法,使用特高频局部放电检测法对固体绝缘缺陷进行检测和定位后,在设备检修期间应用X射线数字成像技术对缺陷进行可视化确证。该方法在某110 kV变电站110 kV GIS的带电检测中成功发现隔离开关绝缘拉杆内部电树枝缺陷 ...
雷汉坤, 贾志杰
doaj  

断路器绝缘拉杆缺陷的超声检测方法研究

open access: yesGaoya dianqi, 2023
绝缘拉杆是GIS断路器内完成电气通断操作的关键结构部件,在高电场、强机械应力等耦合作用下绝缘拉杆缺陷极易引发沿面闪络或击穿故障,直接关系到开关设备乃至电力系统的安全稳定运行。文中利用超声波反射法对超特高压GIS断路器管式绝缘拉杆进行缺陷检测,首先设计了与绝缘拉杆形状相匹配的双晶探头以提高检测精度,对不同直径、不同深度人工气隙缺陷,不同深度的人工压痕缺陷和未投运的同型号绝缘拉杆进行了超声检测试验研究,提出了绝缘拉杆内部气隙、表面损伤以及管壁厚度不均缺陷的检测评估方法。结果表明 ...
陈允   +4 more
doaj  

Engineering a Tumor‐Targeted MgH2@Lip/PD‐L1 Nanoplatform for Synergistic Hydrogen Therapy and Immune Activation

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Lung cancer remains the leading cause of cancer‐related deaths worldwide, yet immune checkpoint blockade (ICB) is often compromised by an immunosuppressive tumor microenvironment (TME) with acidosis, hypoxia, and poor T cell infiltration. Here, we develop a TME‐responsive nanoplatform (MgH2@Lip/PD‐L1) that couples hydrogen gas therapy with PD ...
Xuyu Gu   +5 more
wiley   +1 more source

组合电器盆式绝缘子内部气隙缺陷的带电检测与分析

open access: yesGaoya dianqi, 2012
笔者通过局部放电超高频检测、缺陷定位、模式识别以及解体等,分析了一起组合电器GIS盆式绝缘子内部气隙缺陷,阐述了基于信号能量衰减法和到达时延法的缺陷精确定位过程,又根据超高频信号PRPD谱图特征对缺陷类型进行了识别,最后通过解体查找到了该内部气隙缺陷。
周云锋, 杨景刚, 张子阳
doaj  

Excellent Comprehensive Electromechanical Properties in PZT‐Based Hard High‐Temperature Piezoceramics

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan   +10 more
wiley   +1 more source

检测GIS固体绝缘内部放电缺陷的特高频和X射线数字成像联合方法研究

open access: yesGaoya dianqi, 2018
相比超声波局部放电检测法,特高频局部放电检测法对GIS固体绝缘内部放电缺陷检测灵敏度和定位精度较高,但无法确证此类缺陷部位和类型,据此制定的设备检修策略难以保证完善、准确。因此,文中研究了特高频局部放电和X射线数字成像联合检测GIS固体绝缘内部放电缺陷的方法,使用特高频局部放电检测法对固体绝缘缺陷进行检测和定位后,在设备检修期间应用X射线数字成像技术对缺陷进行可视化确证。该方法在某110kV变电站110kV GIS的带电检测中成功发现隔离开关绝缘拉杆内部电树枝缺陷 ...
雷汉坤, 贾志杰
doaj  

One‐Sidedness and the Inferior Function in Coriolanus and Timon of Athens

open access: yesJournal of Analytical Psychology, Volume 71, Issue 1, Page 8-34, February 2026.
Abstract For both Jung and Shakespeare, one‐sidedness is the fundamental tragic trait. Jung proposed that as an individual develops, they inevitably associate their identity with certain modes of perception and interaction, and that this leads to psychological polarization.
Sofie Qwarnström
wiley   +1 more source

缺陷连续统理论及其在本构方程研究中的应用 Ⅱ.缺陷的规范场理论

open access: yes, 1989
详细评述了缺陷连续统的规范场理论,该理论是近代材料科学和固体力学中新发展起来颇有意义的一个分支。首先强调了Noether定理及其逆定理在构造缺陷规范场理论中的重要性。同时基于Yang-Mills普适规范场构造,包括对SO(3)T(3)群的最小替换和最小耦合原理,系统地介绍了Golebiewska-Lasota,Edelen,Kadic和Edelen等人的原始性工作及他们的贡献。本文表明,Kadic和Edelen的理论是基于一组缺陷动力学的线性连续性方程发展起来的 ...
王文标, 段祝平, 黄迎雷
core   +2 more sources

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