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基于薄壳理论的针刺式接地装置优化设计研究

Dianci bileiqi
接地装置的冲击接地电阻对线路的耐雷水平有很大的影响，因此，对接地设备进行基于降阻效果的优化设计是非常有必要的。研究发现在接地极上加装针刺状导体能够改善接地装置冲击特性，文中基于薄壳理论建立了考虑土壤火花击穿特性的接地装置冲击特性有限元模型，然后分析了在水平接地体上添加针刺的降阻机理，最后采用仿真软件研究了针刺导体的位置、间距和角度对冲击接地电阻的影响。研究结果表明：针刺导体的位置、间距、角度与冲击接地电阻之间的关系并非线性，而是存在最优值。在水平接地体长度为15 m、针刺长度为1 m的情况下 ...
李景丽, 刘璐瑶, 朱子卓, 李传举   +3 more
doaj  

[Research progress in surgical treatment of calcaneal fracture malunions]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ji D, Wang Q, Zhao H.
europepmc   +1 more source

[Arthroscopic-assisted closed reduction and internal fixation with absorbable screws for Hawkins type <b>Ⅱ</b> talar neck fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Dong Z, Cao Z, Dong H, Jiang H, Shi L, Zhang Y, Sun J.   +6 more
europepmc   +1 more source

[Oral Health Status of Obese Children andIntervention Strategies]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Cheng R, Lei L, Zhang R, Cai H, Hu T.
europepmc   +1 more source

[Adolescent depressive disorder: prevalence, risk factors, current status of diagnosis and treatment, and challenges]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Cong EZ.
europepmc   +1 more source

[Eculizumab in the treatment of systemic lupus erythematosus complicated by thrombotic microangiopathy: a case report]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Liu H, Liao PL, Wang XW.
europepmc   +1 more source

[Electroencephalographic assessment of the relationship between frontal alpha asymmetry and emotion dysregulation in children with attention deficit hyperactivity disorder]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Chen L, Zhao LL, Wu XC, Li HY, Zhang WW.
europepmc   +1 more source

[Comparative study on accuracy of three imaging methods in diagnosis of subacromial impingement syndrome]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zi L, Jin H, Zhu J, Zhang G, Tong Y, Chen S, Shao W, Tang X.   +7 more
europepmc   +1 more source

[Biomechanical analysis of a novel bridging plate for treating Rockwood III acromioclavicular joint dislocation]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen Y, Zhang G, Li S, Luo N, Zhang Y.
europepmc   +1 more source

[Advances in oral and craniofacial bone regeneration modulated by stem cells and biomaterials]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Li Z, Lv L, Zhang X, Xia D, Zhang P, Liu Y, Zhou Y.   +6 more
europepmc   +1 more source