Results 61 to 70 of about 238 (118)

一起1 000 kV特高压交流输电线路复合绝缘子断串原因分析

Dianci bileiqi
伴随着输电网络规模的不断扩大，复合绝缘子在运数量也越来越多，时有发生的绝缘子断串事件严重影响电网的安全稳定运行。因此，本研究针对一起典型的1 000 kV特高压交流输电线路复合绝缘子断串事件，通过断串绝缘子的剖检、工频耐压红外、水扩散等试验对照同塔对照试样排查复合绝缘子可能出现断串故障的隐患源，剖检、红外测试表明该次断串类型属于芯棒酥朽断串，缺陷由芯棒内部向外部发展。最终确定复合绝缘子断串的原因为芯棒-护套界面粘接性能下降、护套厚度不足，水分侵入芯棒引发产生酥朽缺陷，酥朽缺陷逐步发展导致断串。
于姜赟, 何坚, 李特, 岳灵平, 寿峰, 刘平平   +5 more
doaj  

[An integrated electrical stimulation-drug iontophoresis-monitoring system for tendon injury repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Rui B, Guo X, Zhou Y, Zhuang C, Liu C.
europepmc   +1 more source

[Closed-loop regulation system for paralyzed lower limb joint movement based on electrical stimulation of spinal central pattern generator]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shen X, Zhang X, Lou X, Gu H, Bian X, Zhong H, Zhao Y.   +6 more
europepmc   +1 more source

[Research progress on paper-based microfluidic chips in pathogen detection]. [PDF]

Se Pu
Liu XT, Shi J, Shi M.
europepmc   +1 more source

[Strategy and discussion of hip joint preserving surgery treatments for adult osteonecrosis of the femoral head]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2018
Zhao D, Xie H.
europepmc   +1 more source

一起架空线路用复合绝缘子异常温升的试验分析研究

Dianci bileiqi
架空线路用复合绝缘子广泛应用于输配电线路，其性能直接关系到电网的安全运行。近年来架空线路用复合绝缘子的异常温升引起了电力系统运行单位和复合绝缘子制造厂家的广泛关注。本分通过对一起异常温升复合绝缘子的试验研究，分析出造成该绝缘子异常温升的部件为绝缘子的劣化芯棒，劣化的原因为芯棒的环氧树脂部分分解，定性芯棒处于酥朽断裂的早期阶段。提出应关注工频电压试验的布置和适度减少芯棒水扩散试验泄露电流规定值的建议。最后，强调绝缘子的制造厂家应注重原料的储存管理，提请电力运行单位监测运行绝缘子的温度。
张书良, 王帅, 李敬彪, 杨子滢, 柴琼瑛   +4 more
doaj  

[Master manipulator of vascular intervention surgical robot based on haptic feedback]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Han G, Sun Z, Tang X.
europepmc   +1 more source

[Prospects and technical challenges of non-invasive brain-computer interfaces in manned space missions]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Ju Y, Liu J, Li Z, Liu Y, He H, Liu J, Liu B, Wang M, Zhang Y.   +8 more
europepmc   +1 more source

[The safety of TiRobot-guided percutaneous transpedicular screw implantation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2021
Lin S, Hu J, Wan L, Tang L, Wang Y, Yu Y, Zhang W.   +6 more
europepmc   +1 more source

[Electric-field modeling, simulation, and experimental analysis of multi-target temporal interference transcranial alternating current stimulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang T, Cui C, Wei Y, Ji X, Xu G.
europepmc   +1 more source