Gaoya dianqi, 2011 笔者从线路设计角度进一步定性分析了单（或双分裂）导线覆冰舞动机理,指出使用现有抑舞装置应注意的问题:单导线（地线）耐张线夹和悬垂线夹的固定导线（地线）结构使固定点附近的单导线（地线）扭转刚度很大,易形成偏心覆冰并诱发舞动,进一步扩散至档内中央;绞制的导线单丝沿线不连续覆冰使单丝应力分布不均,以致导线内部不稳借助风力发生自激震荡。将耐张串高压端直角挂板改为2付内弧U形环,实现环—环连接,使靠近杆塔的单导线能够发生一定角度的轴向扭转 ...
王晓涵 +7 more
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Jianzhu Gangjiegou Jinzhan本文采用有限元模拟和理论分析相结合的方法，研究了十字形PEC短柱的偏压力学性能并推导出其偏压承载力计算公式。首先利用ABAQUS有限元软件进行数值建模，分别考察在大偏压和小偏压作用下试件的破坏模式和破坏机理，并通过参数分析，研究混凝土强度、钢材强度、加载角和肢厚比等参数对试件力学性能的影响规律。研究结果表明：在大偏压和小偏压破坏时，主钢件均非全截面屈服，而是在中性轴附近存在弹性核；在小偏心受压时，提高混凝土强度等级可明显增加试件的极限承载力，而在大偏心受压时 ...
李媛萍, 林启颖, 李国飞
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Gaoya dianqi随着大量可再生能源接入配电网，由于其出力的不确定性，需要对配电网进行扩展规划。为此，首先提出一种基于卷积神经网络与长短期记忆网络方法预测风光荷出力，然后构建主动配电网双层扩展规划模型。上层规划模型，以年综合成本最低为优化目标，同时考虑线路的改造升级与各项成本。下层运行模型，以年综合运行成本最低与节点电压偏移量最小为优化目标，考虑运行状况、分布式电源与储能的规划。在经过上下层关联建模后，将双层模型转化为多目标优化问题，然后采用归一化法向约束法进行求解，以获得分布均匀的帕累托前沿 ...
朱夏, 陈颂, 袁明瀚, 刘扬洋
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[Eccentric kyphotic distraction reduction technique for treatment of lower cervical dislocation with locked facet joints]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi Y +6 more
europepmc +1 more source
[A case report of benign paroxysmal vertigo of childhood complicated with patent foramen ovale and emotional disorder]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiWu D, Zeng X.
europepmc +1 more source
[Three-dimentional printed personalized guide plate-assisted wrist arthroscopic repair of Palmer type <b>Ⅰ</b>B triangular fibrocartilage complex injury]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi J +6 more
europepmc +1 more source
[Effectiveness comparison of transforaminal endoscopy and unilateral biportal endoscopy for far lateral lumbar disc herniation]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang J +6 more
europepmc +1 more source
[Impact of tibial tunnel position in artificial posterior cruciate ligament reconstruction on postoperative knee function and stability]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhao Y, Wang C.
europepmc +1 more source
[Analysis of setup errors and their correlation with clinical factors in image-guided radiotherapy for prostate cancer using different immobilization devices]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoGuo X +5 more
europepmc +1 more source
[Application of infrared thermography in breast reconstruction and plastic surgery and limb reconstruction]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiJian H +26 more
europepmc +1 more source