Gaoya dianqi, 2014 在变电站接地网设计中,考虑到切合站场母线会对通信设备产生强大的电磁干扰,通常会将电缆屏蔽层两端接地。然而,在变电站受到雷击或发生短路故障情况下,电缆芯线与屏蔽层之间会产生巨大的转移电位差。这种电位差一方面可能会破坏电缆芯线与屏蔽层之间的主绝缘,形成电树枝或介质击穿,另一方面转移电位差会在铠装层形成回路,产生很大的暂态电流,干扰通信设备导致设备误操作。因此,转移电位差对变电站设备的影响亟待更深入的分析。笔者针对发生对地短路故障的变电站,建立铠装电缆的电气模型 ...
陈立 +5 more
doaj
Dianci bileiqi, 1977 1.前言（内容提要） 为了适应500千伏送电的需要,日立制作所研制了采用电容器屏蔽筒的耐污秽避雷器,其污秽程度为0.01、0.03毫克/厘米2,该避雷器已部分投产,现将其结构和设计参数介绍如下。
富下隆雄, 姜惇
doaj
[Multidimensional characteristics of the tumor microenviron-ment and advances in targeted delivery strategies]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanChen H, Zhang L, Li C.
europepmc +1 more source
Dianci bileiqi针对雷击风机叶片导致的结构损伤与系统故障问题，亟需开展风机系统引雷特性与屏蔽效应研究。本研究基于Cooray模型对上行先导的起始及发展全过程进行计算，构建了全比例雷击风机叶片的仿真模型，提出一种静电场仿真与有限元分析结合的方法，探究不同工况下风机叶片的引雷能力。并在已有的电气几何屏蔽模型上引入间距修正因子计算得出双风机间的雷电屏蔽间距。研究表明：叶片旋转角度θ≤30°时，易遭受雷击，当角度θ=60°时，雷击风险显著降低；叶片尖端0-10m处雷击概率较高，尤其是0-1m处，故接闪器应靠近尖端装设 ...
左帅 +5 more
doaj
[Construction of acrylpimaric acid-bonded silica stationary phase and its application in mixed-mode chromatographic separation]. [PDF]
Se PuZeng L +5 more
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[Simulation research on the influence of regular porous lattice scaffolds on bone growth]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiMen Y, Wei L, Hu B, Hao P, Zhang C.
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[Gandou Bushen Decoction Ameliorates Cognitive Impairment in Wilson Disease Model TX Mice by Regulating Melatonin Synthesis via the SIRT3/FOXO3α Pathway]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanWang L +8 more
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[Research on fault diagnosis of patient monitor based on text mining]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHe X +6 more
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[Application of modified coronal approach in treatment of craniomaxillofacial fractures]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2017 Lei W +5 more
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[In vivo study of 3D printed porous tantalum implant on osseointegration]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2018 Su KX +5 more
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