2) DC flashover performance
直流污闪特性
1.
The DC flashover performance of 4 types of composite post insulator and 2 types of ceramic post insulator under different ESDD, NSDD, insulator material and shapes were studied.
为给特高压直流变电外绝缘设计提供试验依据,在实际海拔1970m条件下对4种复合支柱绝缘子和2种瓷支柱绝缘子进行了恒压升降法直流污闪试验,研究了高海拔条件下盐密、灰密以及绝缘子材质和几何形状等因素对其直流污闪特性的影响。
2.
Quantitative contrast experiment to study the relationship between DC flashover performance of composite insulators and component of non-soluble materials as well as hydrophobicity time was carried out.
研究了环境因素和污秽成分对高温硫化硅橡胶材料憎水性迁移特性的影响,对灰成分和憎水性迁移时间与复合绝缘子直流污闪特性的关系进行了定量对比试验。
4) flashover performance
闪络特性
1.
So far, in the region of 4000 m more above sea level, there have not carried on the study on flashover performance of insulator of electric railway at home and abroad.
目前,国内外还没有进行过海拔4000m以上地区电气化铁道绝缘子闪络特性研究。
2.
Then,based on the“U”distribution of the flashover voltage values of composite insulators with the increase of the temperature cycle in the cold fog,the flashover performance evaluation method is brought forwa.
最后,分别利用该冷雾试验方法和传统蒸汽雾法评价了一种复合绝缘子短串试样的污秽闪络特性。
3.
Therefore, a systematic study of flashover performance and mechanism of insulators covered-with.
因此研究覆冰绝缘子的闪络特性和机理具有重要的学术意义和工程应用价值。
5) flashover characteristic
闪络特性
1.
In order to supply the designing foundation of composite insulator in EHVDC and UHVDC system, un-uniform pollution flashover characteristic of DC composite inshulators and the promoting range of pollution flashover voltage under hydrophobic status are studied by artificial pollution test method in this paper.
为了给超高压及特高压直流线路复合绝缘子设计应用提供依据,采用人工污秽试验方法研究了直流复合绝缘子不均匀污秽闪络特性以及憎水性条件下污闪电压的提高幅度,提出了直流复合绝缘子不均匀污秽闪络电压的修正系数公式,获得了修正系数。
2.
Some different artificial pollution manners have been commended to study the pollution flashover characteristic in IEC and correlative standards, but no any description about the difference among them.
IEC及我国推荐了几种不同的人工污秽方式以进行绝缘子闪络特性的试验研究,但对于各种人工污秽方式之间的差异并没有给予说明和研究。
3.
The reason which causes the differences of the flashover characteristics between two electrodes is analyzed.
通过模拟支柱绝缘子和穿墙套管的沿面放电模型,对电极结构、极间距离、表面电导率以及所加电压的极性等对沿面闪络电压的影响进行了试验研究,并分析了不同模型闪络特性差别的原因。
补充资料：直流
直流
Direct current
直流(direet。urrent) ，仅按一个方向流过电路或设备的电流称为直流。与交流电压相比，直流电压的极性是不变的。直流电流相当于电荷沿着闭合的电路以不变的方向流动或位移。直流电流和电压的幅值可以恒定，也可以随时间变化。 蓄电池和旋转发电机产生幅值恒定的额定直流电压，整流器产生幅值随时间而变的直流电压。整流器把交流电压变换为脉动的直流电压。 通常电站不是广泛地将直流电输配给一般用户，相反，在需要直流电(d。)能的场所，是把商业上合用的交流电(ac)能整流为直流电能。 「罗布(D.D.Robb)撰]
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条