Results 51 to 60 of about 9,089 (121)

±500kV换流站直流分压器用复合套管外绝缘闪络事故分析及处理措施

Dianci bileiqi, 2010
对±500kV江陵和龙泉换流站直流分压器的外绝缘闪络事故进行了分析。指出该分压器发生闪络事故的原因:一是复合套管的憎水性完全丧失;二是复合套管的伞裙形状参数特性较差;三是复合套管的均压环结构不合理。发生闪络事故的主要原因是复合套管的憎水性完全丧失,其次是均压环结构不合理。在此基础上,针对分压器的结构和事故的性质,提出了从根本上解决问题的思路是应按所要求的电气、机械和憎水性能来选用复合套管外绝缘材料 ...
吴光亚, 叶廷路, 吴巾克, 李建建, 陈原, 宋福如, 林国强   +6 more
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盐雾条件下加压方法对绝缘子污秽闪络电压的影响

Gaoya dianqi, 2018
盐雾污秽闪络试验模拟污秽绝缘子在盐雾环境下的闪络,绝缘子周围空间存在大量高导电率雾滴,与蒸汽雾环境有所不同。盐雾环境下,不同加压方式对闪络试验结果的影响与蒸汽雾环境存在一定差别。因此,文中分别采用均匀升压法和恒压升降法对污秽绝缘子在盐雾环境下的污秽闪络进行模拟,得到绝缘子在2种加压方式下变盐密条件下的闪络电压,并比较曲线拟合结果。结果表明:交流人工盐雾污秽闪络试验中,通过均匀升压法得到的闪络电压高于恒压升降法,2种升压方法的闪络电压差值百分比为14%36%。
廖一帆, 杨宇轩, 张福增, 何正浩, 曾向君, 罗兵, 涂志飞, 王琳媛   +7 more
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环氧树脂液氮环境中沿面闪络特性研究

Dianci bileiqi, 2013
液氮环境中绝缘材料的沿面放电特性对超导电力设备的外绝缘设计至关重要。笔者设计环-环电极和尖-板电极,模拟均匀电场和不均匀电场,研究了低温环境下较常用的环氧树脂在液氮环境中的沿面闪络特性,得出了环氧树脂在液氮环境中两种电极下的沿面闪络电压的韦伯分布概率图,利用MATLAB软件拟合出服从韦伯分布0.1%闪络概率的沿面闪络电压和爬电距离的关系曲线,通过分析比较可见,环氧树脂在液氮环境中的沿面闪络电压受电极间距和电场不均度的影响较大,同时为高温超导电力设备的绝缘设计提供参考。
肖蔚然
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[Efficacy of intravenous thrombolysis beyond 4.5 to 24 hours in patients with isolated posterior circulation acute ischemic stroke]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Wang J, Yan S, Lang Y, Jin T, Tang H, Qian S, Yu H, Lou M, Chen H.   +8 more
europepmc   +1 more source

[Progress in diagnosis and treatment of finger flexion deformity caused by forearm flexor muscle lesions]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jiang Y, Wei J.
europepmc   +1 more source

[Performance evaluation of different filtration fractions during daytime continuous renal replacement therapy]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Wang L, Chen Y, Xu G, Xu C.
europepmc   +1 more source

[Comparison of effectiveness between visualized reamer foraminoplasty and transforaminal endoscopic spine system technique in transforminal endoscopic lumbar discectomy for lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Liu H, Hu Y, Kang Z, Zhang Z, Gao Z, Lin D, Liang Y, Li Y.   +7 more
europepmc   +1 more source

[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Huang C, Chen K, Liu H, Ge Z, Lin D, Chen B, Su G, Lin Y, Hou Y, Li Y.   +9 more
europepmc   +1 more source

[Epidemiological characteristics of adult inpatients with diabetes-related chronic non-healing wounds in Hainan province]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Yao JL, Li JX, Ming XC, Gu YT, Jiang T, Yang J, Bian YY, Zheng LY, Wang R, Zeng YF, Cheng SW.   +10 more
europepmc   +1 more source

[Treatment of inferior pole patellar fractures with suture anchors and headless compression screws]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang J, Zhang W, Tian Z, Jiang Y, Yao Q.
europepmc   +1 more source