Gaoya dianqi配电电缆是电网设备的重要组成部分，其绝缘缺陷引发局部放电、整体绝缘老化是导致电缆故障的主要原因。为预防电缆故障、保证配网安全可靠运行，研究配电电缆试验方法具有重要意义。文中总结国内外现行试验标准；阐述配电电缆各种试验方法的原理和试验规程，包括工频电压试验、串联谐振电压试验、振荡波电压试验、超低频正弦波电压试验、超低频余弦方波电压试验；重点综述振荡波和超低频电压试验方法的研究现状和存在问题，讨论电缆局放特性；最后总结上述试验方法的优缺点，探讨其在配电电缆绝缘状态诊断应用的主要发展趋势。
王超 +6 more
doaj
[The simulative study of a new probe for the in vivo dielectric measurement of anisotropic tissue in radio frequency band]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2018 Zhang L, Zhang X, Zhou D, Li G, Liu P.
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Gaoya dianqi近年来，海上风力发电发展迅猛，作为连接陆地电网与海上风电场的唯一枢纽，海底电缆线路极其重要。为充分利用电缆传输容量，提高风电项目经济性，文中同时考虑风电场送出电流的波动性以及电缆本体和环境的热惯性，基于实际典型负荷，仿真分析了海缆暂态温升特性。研究结果表明，直埋海底电缆具有较大的热时间常数，如在50%长期负荷基础上施加满负荷电流48 h后，电缆线芯温度仍未达到90 ℃。1 000 MW的风电场采用2回330 kV线路送出，仅3×1 000 mm2的海缆即可满足输送功率要求，而按照100 ...
吴高波 +5 more
doaj
[Improved generalized regression neural network for quantitative analysis of crude oil density by gas chromatography]. [PDF]
Se Pu, 2022 Liang H, Ding S, Wei Q, Zou J.
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[Biomechanics test of fixation of star-shaped six-part patellar fractures with petal-shaped poly-axial locking plate]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2018 Meng D +7 more
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[Analysis of phthalate esters and their novel alternatives in indoor dust using comprehensive two-dimensional gas chromatography-time of flight mass spectrometry]. [PDF]
Se PuWang LX +9 more
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[Research and application implementation of the Internet of Things scheme for intensive care unit medical equipment]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiang H +6 more
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[Characteristics of posterior coronal banana-shaped fragments and its research progress in treatment of intertrochanteric femoral fracture with cephalomedullary nail]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLi H, Li L, Chang S.
europepmc +1 more source
[An radio frequency coil design for rat spinal magnetic resonance imaging at 9.4 T]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2019 Xu Y, Yang H, Zhong K.
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[Progress on reconstruction of proximal femur in the hemiarthroplasty for intertrochanteric fracture with distal fixated long stem]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2020 Zhao Z +5 more
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