Gaoya dianqi, 2011 直流电流在大地中流散时,大地将呈现一定的电位分布,当直流接地极址靠近输电走廊时,将有直流通过地线在处于不同等电位面的杆塔之间流动,从而造成杆塔接地体及基础导体的腐蚀。笔者针对锦屏-苏南±800 kV特高压直流输电工程送端龙恩接地极址,以距极址最近的二自Ⅱ回500 kV交流线路为例,将直流接地极、土壤结构、避雷线和杆塔接地体在CDEGS（电流分布、电磁场分析、接地与土壤结构分析）软件中进行数值建模,仿真计算了流过各个杆塔的直流电流值并分析了土壤结构、杆塔接地电阻等参数对直流分布的影响 ...
朱轲, 吴驰, 扬威
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Dianci bileiqi, 2019 在小电阻接地系统中,若线路发生单相接地故障将在故障点产生较大电流,数百安的接地电流会引起地电位超过安全允许值。对某市10kV小电阻接地系统发生单相接地短路后会造成地点位升高进行了定量分析。首先,对该线路在单相接地短路时故障短路电流进行了模拟理论计算和MATLAB仿真,得到故障发生后将产生超过安全允许的电流值。其次,运用有限元分析软件ANSYS分析了杆塔旁土壤地电位分布,并分析其跨步电压对人身安全的影响。结果表明:故障发生后杆塔附近的跨步电压较大,远远超过人身安全允许值。最后,基于人身安全 ...
毛兴华 +4 more
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Dianci bileiqi, 2018 基于L-D（Liew and Darveniza）提出的土壤非线性击穿效应模型,根据电磁场理论开发了一套三维时域有限差分（3-D FDTD）算法,建立了垂直接地体仿真模型,利用该模型于时域内从电场强度,电导率分布,最大暂态地电位升和暂态冲击阻抗的角度来研究了不同接地体长度和不同电流幅值对垂直接地体冲击散流特性的影响,于频域内从电场强度和电导率分布的角度来研究了垂直接地体在不同正弦电流频率中的散流特性。研究表明:1)接地体长度越长,土壤横向击穿区域越小,纵向击穿区域越大,最大暂态地电位升越小 ...
陶玉郎 +6 more
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[Localizing target for transcranial electrical stimulation in epilepsy patients combining scalp electroencephalogram and neural computational model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiu Y, Li C, Han Y.
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Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiu S, Wang L, Li S, Xu G.
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