Gaoya dianqi, 1990 凝露现象是断路器受潮主要原因之一。它是一种表面无任何迹象、不易被人预先发现的断路器主绝缘受潮故障,将导致突然的断路器爆炸。因而严重地危害着断路器的安全运行和人身安全。因此,弄清断路器产生凝露的原因,并采取有效的防患措施是非常重要的。 凝露现象多发生于SW4型少油断路器,它的灭弧室瓷套、三角腔和支柱瓷套所充的变压器油是相互隔离的。在密封完好的情况下,由于气候的突然变化,所造成的温差 ...
许晓明
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Dianci bileiqi, 2010 无间隙金属氧化物避雷器（MOA）的安全运行是电力系统可靠运行的保证。介绍了一例220 kV金属氧化物避雷器红外热缺陷:B相上节与其他两相最高温差为2.1 K;带电检测和停电试验结果超出Q/GDW-2008《输变电设备状态检修试验规程》要求,确定了故障的存在;通过解体检查发现了故障原因:电阻片受潮、局部放电。分析指出,金属氧化物避雷器主要故障为内部受潮、电阻片老化及局部放电等,伴随局部温升,红外热像技术能快速、有效的发现此类故障,是诊断氧化物避雷器故障的重要手段。
左文启, 顾渊博
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[Advances in ovarian tissue cryopreservation and transplanta-tion for fertility preservation in prepubertal patients]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanCheng J, Ruan X, DU J, Jin F, Gu M.
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[A wearable six-minute walk-based system to predict postoperative pulmonary complications after cardiac valve surgery: an exploratory study]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Wang Y +6 more
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Dianci bileiqi随着金属氧化物避雷器在电力系统中广泛应用，由于老化、受潮、环境污秽等原因造成其损坏的故障时有发生。针对一起500 kV线路避雷器异常发热的缺陷，通过带电检测、停电检测和解体试验分析查明事故原因为避雷器下法兰位置未设置排水孔，导致防爆板长期暴露在酸性雨水环境中生锈，强度降低损坏，水汽侵入避雷器空腔内引起氧化锌电阻片受潮，侧面绝缘釉层性能下降后短路击穿。然后通过对受潮氧化锌电阻片进行干燥处理和敲除侧面绝缘釉处理，进一步验证了是氧化锌电阻片侧面绝缘釉短路导致泄漏电流增大。局部氧化锌电阻片侧面绝缘釉层短路击穿后，
贾焦仁, 严明
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[Primary familial and congenital polycythemia caused by EPOR gene mutation: two cases report and literature review]. [PDF]
Zhonghua Xue Ye Xue Za ZhiNing DH +10 more
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[Peak growth hormone and insulin-like growth factor 1 levels in girls with isolated premature thelarche and their predictive value for central precocious puberty]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiChen J +5 more
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[A case of severe acute respiratory distress syndrome caused by inhalation injury]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023 Gu CH, Li XM, Kang XW.
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[Ovarian tissue cryopreservation and transplantation: a review of clinical progress in fertility preservation]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanChen J, Feng C, Jin M.
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[Recent advances in antibody-drug conjugates for metastatic castration-resistant prostate cancer]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanXu J, Ma Y, Hu P, Yao J, Chen H, Ma Q.
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