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直流绝缘
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  dc insulation
     Intelligent sensor system for DC insulation failure detection
     直流绝缘故障检测智能传感器系统
短句来源
     A New Type Integrated Device of DC Insulation Monitoring and Earth Point Locating
     一种新型的直流绝缘监测及接地点定位综合装置
短句来源
     Research on a distributed DC insulation monitoring device
     一种分布式直流绝缘检测装置的研究
短句来源
     Aimed at the status quo of the DC power supply system of 110kV unmanned transformer substation,this paper discusses several aspects from commutating system of DC power supply and storage battery system to the monitor of DC insulation, and puts up forward design's project selection principle of the DC power supply of 110kV unmanned transformer substation.
     针对近年来已实施的110kV无人值班变电站直流电源系统的实施情况,从直流电源的整流系统、蓄电池系统和直流绝缘监测等几个方面讨论并提出了110kV无人值班变电站直流电源设计方案的选择原则。
短句来源
     The component of DC system and the principle of DC insulation monitor were discussed.
     阐述了直流电源系统的组成,及直流绝缘监测仪的工作原理。
短句来源
  “直流绝缘”译为未确定词的双语例句
     The coal/PP composites is an insulating material, and the direct current resistivity of alkylated coal/PP composite is more than 10~(14) Ω·cm in the coal content of 0~50%.
     直流电阻率测试表明, 煤/聚丙烯复合材料是绝缘材料, 烷基化改性煤/聚丙烯复合材料在较大的煤含量范围内(质量分数0~50 % ), 直流绝缘电阻保持在1014Ω·cm以上.
短句来源
     The Application of Microcomputer in Electric System ─ The Circulation and Long-time Monitor for the Insulation of Direct-current system
     计算机在电力系统的应用──直流绝缘巡回在线监测仪
短句来源
     To meet the demand of shockwave physical experiments, an uniform dielectric membrane of Al_2O_3 was formed on the half- ball surface of a slender aluminium pole. The membrane is 5.5μm thick, the breakdown field strength with D. C.
     根据冲击波物理实验的需要,利用改进的阳极化工艺,在铝杆半球形的表面均匀地生成厚约5.5μm的Al2O3电介质膜,其直流绝缘强度可达250V,1min,低冲击压力作用下的电脉冲前沿约50ns。
短句来源
     Novel Method for Measuring Voltage Distribution of HVDC Insulator String and Its Distribution Characteristics
     直流绝缘子串电压分布测量方法及其分布特性
短句来源
     Research and Application of DC System Sulation Montoring
     直流绝缘检测的研究与应用
短句来源
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  相似匹配句对
     Design on the Insulation of the DC Cable
     直流电缆绝缘设计
短句来源
     The Development of Automatic Insulation Monitor for DC System
     直流系统绝缘自动监测仪研制
短句来源
     Basic Direct Current Circuits
     直流电路
短句来源
     Talking about Insulation Busbars Trough
     浅谈绝缘母线槽
短句来源
     THE DC MOTOR EMULATOR
     直流电动机仿真器
短句来源
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  dc insulation
DC insulation parameter characteristics of XLPE in the course of its aging
      


Considering the injection depth of charges in polymers and employing

作者考虑到聚合物中电荷注入具有一定深度这一特点,利用电极和聚合物接触的界面和电荷双注入理论,推导出介质在空间电荷自身反电场作用下的击穿公式,理论得到实验的验证.本击穿模型也能定性地解释电荷发射屏的工作原理,特制的两种聚乙烯试样的实验结果表明,在均匀电场中电荷发射屏也能提高直流绝缘的短路击穿场强.

he modified strontium titanate ceramic material of composition 0.91(SrTiO3)+0.09(Bi2O3·3TiO2) was prepared by sol-gel process using (C4H9O)4Ti, Sr(NO3)2,Bi(NO3)3 and (NH4)3(C6H5O7) as row materials through the formation of multi cetric-comp lexes as intermediate. The modified SrTiO3 condenser material was ultimately prepared by doped with 3mol%PbO, 3mol% Li2O and 0.4mol%Rb2O on above prepared material through mixing, pressing to pellet, drying and sintering procedures.Investigation of the electric properties...

he modified strontium titanate ceramic material of composition 0.91(SrTiO3)+0.09(Bi2O3·3TiO2) was prepared by sol-gel process using (C4H9O)4Ti, Sr(NO3)2,Bi(NO3)3 and (NH4)3(C6H5O7) as row materials through the formation of multi cetric-comp lexes as intermediate. The modified SrTiO3 condenser material was ultimately prepared by doped with 3mol%PbO, 3mol% Li2O and 0.4mol%Rb2O on above prepared material through mixing, pressing to pellet, drying and sintering procedures.Investigation of the electric properties of prepared condenser material shows that it has dielectric constant 2200(30℃) with a temperature coefficient< 2.5×10(-3) /℃ (-70 ̄70℃). a loss factor ig δ<0.004, a dc resistivity 2×1012Ω. cm(30℃) and break down voltage > 15000kV / m.This material is a good choice for the fabrication of high voltage ceramic capacitors.

本文采用(C4H9O)4Ti,Sr(NO3)2和Bi(NO3)3为原料制成柠檬酸多元配合物溶液,经过形成溶胶凝胶过程,在一定条件下进行热分解,获得组成为:0.91SrTiO3+0.09(Bi2O3·3TiO2)的陶瓷粉料.上述粉料掺入3mol%PbO,3mol%Li2O和0.4mol%Rb2O后经混合、压片、干燥和烧结等步骤制成改性SrTiO3电容器材料.电性研究表明,用这种材料制成的电容器其介电常数>2200(30℃),介电常数的温度系数<2.5×10(-3)/℃(-70~70℃),介电损耗<0.04,直流绝缘电阻率为2×1012Ω·cm(30℃),耐压>1500kV/m,这种材料适合制作高质量高压瓷介电容器.

The bushing barrier on valve side of the converter transformer is the critical part of DC insulation,the evaluations of the effectiveness of tests for insulation examination are given in this paper through a calculation of electric field of this part, a typical insulation structure,and the corresponding improving proposals are also presented here.

换流变压器阀侧出线装置是直流绝缘的关键部位。通过对这一部位的典型绝缘结构的电场强度计算,对各种试验的绝缘考核的有效性作出了评价,并提出了相应的改进意见。

 
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