Gaoya dianqi, 2016 特高压检修存在着技术难度高、参考案例少、检修经验无等困难,特别是断路器回路电阻的测量,其可靠性直接关乎特高压设备的安全运行。为了寻找最佳的测量方案,为今后的特高压检修工作提供参考经验。文中依托1000kV特高压练塘站的首次检修,分别采用传统的单相直流电压降法、改进后的三相直流电压降法和不拆头带接地点测量法,使用两种仪器对两种1000kV断路器分别试验采样,对比标准值和出厂值发现,采用三相直流电压降法可以便捷、可靠地判断出断路器回路电阻值的合格与否,如需精确地定量分析还需采用单相直流电压降法进行复测。
李洋, 王俏华, 徐楠, 陆云
doaj
[Epidemiological characteristics of adult inpatients with diabetes-related chronic non-healing wounds in Hainan province]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiYao JL +10 more
europepmc +1 more source
[Novel advances following the integration of Baveno VII consensus definitions for the non-invasive testing of portal hypertension]. [PDF]
Zhonghua Gan Zang Bing Za ZhiChen JL, Yang CQ.
europepmc +1 more source
[Current status and prospects of family financial toxicity in childhood malignancies]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWu ST, Wang CL, Shi DR.
europepmc +1 more source
Gaoya dianqi局部放电作为绝缘劣化的显著特征，是诊断变压器绝缘状况的重要依据。现有宽频脉冲电流检测易受到外界环境电磁干扰，特高频检测虽然具有良好的抗干扰性能，但其传感器的安装需与变压器结构相匹配而应用受限。文中提出基于变压器铁心接地电流的特高频局部放电检测方法，基于时域有限差分法建立变压器特高频仿真模型，仿真研究铁心对于特高频信号的接收性能，利用实体110 kV变压器进行局部放电实验，验证了该检测方法的可行性和有效性。结果表明，三相三柱式变压器中的铁心在367～533 MHz、1.29～1.36 GHz、2.06～2.
蔡玲珑 +6 more
doaj
[Sex-specific hemoglobin thresholds for oxygen saturation: A non-linear regression analysis based on Tibetan inpatients]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanGongjue Z, Mao Y, Dawa P, Laba C, Yan Q.
europepmc +1 more source
[<b>Role of counterclockwise rotation of the mandible in the orthodontic treatment of skeletal Class</b>Ⅱ<b>hyperdivergent patterns and concomitant temporomandibular disorders</b>]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhao Z.
europepmc +1 more source
[Folic acid supplementation alleviates high-salt diet-induced renal fibrosis in mice]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoTang F +5 more
europepmc +1 more source
[Research progress on animal models relevant to porto-sinusoidal vascular disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiLi M, Wang JZ, Liu CH.
europepmc +1 more source