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青海地区330kV输电线路覆冰条件下雷击风险评估

Dianci bileiqi
覆冰和雷击是造成青海地区输电线路故障的主要原因，为综合考虑雷击与覆冰耦合对线路电气性能的影响，提出了一种考虑覆冰因素的雷击风险评估方法。基于称重法建立了覆冰厚度计算模型，根据先导发展速度修正系数计算方法，利用电磁暂态分析软件（Electro Magnetic Transient Program，EMTP）中MODELS语言编写了覆冰绝缘子先导闪络判据模块。为精确计算线路绕击风险，建立了考虑雷电入射角和地形参数的改进电气几何模型。最后，结合风险阈值划分标准对杆塔进行逐基风险评估。结果表明：当覆冰厚度为 ...
张海平, 童璟, 何旬, 王朝义, 付兴海, 严德全   +5 more
doaj  

[Study of heat steam induced skin damage prevention in robotic nipple-sparing mastectomy and immediate breast reconstruction using Da Vinci Robot]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chen K, Lü P.
europepmc   +1 more source

[Rare massive upper gastrointestinal bleeding: Three cases of Dieulafoy<b>'</b>s disease within diverticula of the descending duodenal and a literature review]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Zhao Q, Zhang J, Zhou Q, He Z, Li H.
europepmc   +1 more source

[DOT1L controls neuronal amyloid precursor protein expres-sion via the p38 MAPK-mediated mitochondrial dynamics homeostasis axis]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Zhang Y, Zhu F, Wu X, Li Z, Huang P, Gao Y, Zeng L.   +6 more
europepmc   +1 more source

[Efficient separation of gossypol from cotton kernels with copper mediated magnetic molecularly imprinted polymer]. [PDF]

Se Pu
Yang SL, Cao Y, He KL, Feng S, Zhang CG, Shan LH.   +5 more
europepmc   +1 more source

[Orthodontic treatment strategies and considerations in adult patients with periodontal disease]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Feng G, Zhong W, Song J.
europepmc   +1 more source

[Preparation of mesoporous covalent organic framework core-shell stationary phase and its application in the analysis of astragaloside Ⅳ content in <i>Astragalus</i>]. [PDF]

Se Pu
Zhao XY, Jin JY, Liu XJ, Yan LJ, Yang SY, Zhang ZW, Zhang LY, Wu RF.   +7 more
europepmc   +1 more source

[Advancements in biomechanics and orthodontic strategies for clear aligner therapy]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Lei X, Jin F.
europepmc   +1 more source

[Clinical efficacy of pedicled double-perforator flap of the inferior epigastric artery in reconstructing the soft tissue defects following resection of cutaneous malignant tumors]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Zhou SP, Zhang D, Wei HL, Li SM, Chen JJ, Li S, Shi PC, Xing XF, Chang CN, Shi YG, Zheng LW, Wang HP, Gai YN.   +12 more
europepmc   +1 more source

[<i>Jianpi Zishen</i> Formula improves renal damage in mice with systemic lupus erythematosus by inhibiting p53-MDM2 signaling axis-mediated ferroptosis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li Y, Huang C, Pang L, Zhu Z, Li M.
europepmc   +1 more source