查询词典 flashover voltage

This finding gives a good explanation to some experiment results which were not understood previously, such as"additional temperature effects"meaning that the flashover voltages after air density correction still increase with the decrease of temperature, and the increment of AC flashover voltage over an insulating surface caused by increase of unit absolute humidity is abnormally high, etc.

根据这一发现，可以很好地解释以往无法解释的一些试验结果，如所谓"温度的附加影响"，即同一绝对湿度对应的工频闪络电压，经过空气密度校正之后，仍随环境温度下降而明显增加。

According to the statistic of the wave of flashover voltage, it was found that the flashover voltage of iced composite insulator hasnt evident effects on its polarity.

通过对闪络过程中电压波形的分析，得到覆冰合成绝缘子闪络没有明显的极性效应。

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 forward.

根据冷雾中随着温度循环次数的增加试样的闪络电压呈&U&形分布的特征，提出冷雾中复合绝缘子污闪特性的评价方法。

Shock characteristic ; gas discharge ; lightning flashover ; flashover voltage ; flashover path ; circuit model

冲击特性；气体放电；雷击闪络；闪络电压；闪络路径；电路模型

Based on a great of laboratory investigation carried out on the AC flashover performance of several types of insulators in the multi-function artificial climate chamber of Chongqing University, this paper studies systematically the AC flashover performance of several type of insulators and puts forward a flashover voltage correction method for the atmospheric environment at altitude of 3500 m above, and discusses the flashover process and mechanism of the iced insulator.

本文在国内外现有研究成果的基础上，通过大量的人工气候室模拟试验研究和理论分析，对海拔3500 m以上地区覆冰和污秽绝缘子的交流闪络特性及闪络电压的校正方法进行了系统研究，并对覆冰合成绝缘子的闪络过程和机理进行了初步探讨。

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。

It analyzes the effects of the pollution severity and the altitude or atmospheric pressure on the flashover voltage or the flashover gradient. It is shown that FOV is determined by the configuration, and the insul...

结果表明：合成绝缘子的污闪电压与伞裙结构有密切关系；在同样的最短干弧距离下，简单伞形结构的合成绝缘子具有更高的污闪电压和污闪梯度，对于伞形结构复杂的合成绝缘子，虽然其爬电距离提高了，但其污闪电压没有明显提高；高海拔下合成绝缘子的气压影响特征指数n大于瓷和玻璃绝缘子，并受伞裙结构形式、污秽程度的影响，且随着污秽程度增加，n逐渐减小，此外，染污方法和方式对n也有一定影响但不明显。

Laboratory investigations on the flashover performances of polluted five types of typical porcelain and glass insulators were carried out in the climate chamber. Based on the test results, this paper analyzes and calculates the flashover voltage, the voltage gradient and the valid creepage distance of the five types of insulators.

为此在人工雾室中对5种典型结构的瓷和玻璃绝缘子的污闪特性进行了试验研究，根据试验结果分析和计算了5种典型绝缘子的闪络电压、闪络电压梯度、有效爬电系数。

According the result of experiment, the air pressure have effect on flashover voltage, the relationship of the flashover voltage and the number of insulator is linearity, and the change of potential distributing after insulator iced is the main reason why the outer insulation characteristic of iced insulator string declined.

试验研究结果表明，气压对覆冰绝缘子长串的闪络电压影响的特征指数与污秽绝缘子一致，覆冰可认为是一种特殊的污秽形式；在试验研究的串长范围内，闪络电压与串长成线性关系；绝缘子串覆冰以后的电位分布的变化是覆冰绝缘子串外绝缘特性下降的主要原因，但覆冰绝缘子串的局部电弧发展成完全闪络所需的时间比污秽绝缘子长，且受冰层的融化和冰凌状态的影响严重。

In the wind environment with and without dust, the flashover voltage of flat plate model, Uf, increases with the increment of the wind. This increase trend becomes slow when the wind increase to be 4.5m/s. Also, the influence of the charge of sand dust on Uf is small. In the condition of sand dust deposited on flat plate model, there is a minimum value of Uf with the increase of the density of the deposited sand dust. Besides, the flashover voltage of the dust is influenced by the moisture of the dust.

得到了风沙速度、风沙带电量、沙粒沉积量及沙粒含水量等因素对沿面放电的影响规律；在有风有沙和有风无沙时，平板模型沿面闪络电压Uf随风速的增大而增大，当风速达到4.5 m/s后增大趋势变缓；Uf受沙尘的电荷量影响较小；当干沙粒沉积在绝缘表面时，随着沉积密度的增加，Uf存在着极小值；同时，平板模型的闪络电压还与沉积沙粒的含水量有关。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。