| 1. | And the surface flashover decreased about 20 % when a magnetic field of about 6000 gauss added
发现外加6000高斯磁场后，表面闪络电压降低20 。 |
| 2. | The factors which influenced the surface flashover and the way to rise the withstand voltage are also been analyzed
对影响表面闪络发生因素，提高表面闪络电压阈值方法进行了分析。 |
| 3. | Explosives for civil uses - detonators and relays - part 21 : determination of flash - over voltage of electric detonators ; german version en 13763 - 21 : 2003
民用爆炸物.雷管和传爆管.第21部分:电雷管的闪络电压 |
| 4. | A lot of observation and reports in the world indicated that flashover voltage of insulator covered with snow or ice descended obviously
国内外大量试验观察和报告表明，冰雪条件下绝缘子的闪络电压明显下降，对电力系统危害极大。 |
| 5. | The way to shield the back current of foilless diode is analyzed by karat program . the surface flashover is raised from 300kv to 400kv when the shield is added in experiments
使用karat程序分析了无箔二极管的回流屏蔽方法，实验中发现加屏蔽环后表面闪络电压从300kv提高到了400kv 。 |
| 6. | So there is important implication value and academic value to systemic investigation of the effect of the existence of air gap to the flashover voltage along the ice - covered insulators
因此,深入、系统的研究空气间隙中的放电活动对绝缘子串闪络电压的影响有着重要的工程应用价值和学术意义。 |
| 7. | It has also been found that the pre - flashover events and the charging characteristic are related to the flashover performance , the samples with seldom pre - flashover events and lower charging ability show a better flashover performance
通过研究发现，对于同组分的陶瓷材料来说，如果材料的晶粒越小，分布越均匀，缺陷越少，则该材料的沿面闪络电压就越高。 |
| 8. | On basis of the analysis of the flashover processes in three kinds of icing states , it gives out the flashover mechanism of icing composite insulators and points out the minimum icing flashover voltage is related to the icing states
2 )通过对覆冰绝缘子三种覆冰状态下闪络过程的分析，提出了覆冰合成绝缘子的闪络机理，并得到合成绝缘子的闪络电压与覆冰状态有关。 |
| 9. | The main tests and researches are as following : to study the ac flashover characteristic of composite insulator in different icing states by imitating tests in multifunctional artificial climate chamber , and analyze the effect of ice amount and icing water conductivity on flashover voltage , put forward a flashover mechanism by analyzing the icing flashover process . to study the ac flashover characteristic of composite insulator in different altitude and icing states together by imitating tests in multifunctional artificial climate chamber , and mainly analyze the effect of altitude ( air pressure ) and ice amount on flashover voltage , and investigate the flashover mechanism . to investigate the effect of high altitude and icing on the hydrophobicity of composite insulators
本文主要进行了以下试验研究： 1 )在多功能人工气候室里模拟不同覆冰程度下合成绝缘子的交流闪络特性，主要分析覆冰量和覆冰水电导率对闪络电压的影响，并对其覆冰闪络过程进行机理分析； 2 )在多功能人工气候室里模拟不同海拔高度和覆冰程度综合作用下合成绝缘子的交流闪络特性，主要分析海拔高度(即气压)和覆冰量对闪络电压的影响，并进行闪络机理分析； 3 )研究高海拔和覆冰对合成绝缘子憎水性的影响。 |
| 10. | The study results show that the minimum ac flashover voltage decreases with the increase of the ice amount accreted on the insulator surface by an exponential law , and the down - trend of the minimum ac flashover voltage will slow gradually with the bridging of the shed of the insulators by icicles , both the average saturated ice amount and the special exponent m of effect of ice amount for different insulators depend on the radius of shed and the air - gaps of the sheds of the insulators , and that the ac ice flashover voltage decrease with the decrease pressure ratio p / p0 ( rise of the altitude ) by power - law for different esdd and icing - states when the altitude is from 4000m to 5500m . the special exponent n , which show the effects of altitude on the flashover voltage , is various with the type of insulator , icing - states and the surface status of iced insulator etc . , and that the minimum ac flashover voltage of iced insulators decreases by power - law with esdd or the freezing water conductivity for different ice amount and atmospheric
研究结果表明：在不同海拔高度和等值盐密esdd下，绝缘子的最低交流冰闪电压均随覆冰量的增加而呈指数规律降低；当覆冰量增加到一定程度后，最低交流冰闪电压随覆冰量增加而降低的趋势趋于饱和；不同绝缘子串的平均饱和覆冰量及闪络电压的覆冰量影响特征指数m均与绝缘子的盘径和伞距等因素有关；在海拔4000 5500m之间，不同等值盐密esdd和覆冰状态下，绝缘子的交流冰闪电压随海拔高度的增加(气压的降低)与p / p0呈乘幂关系降低，气压影响特征指数n与绝缘子类型、覆冰类型、覆冰表面状况等因素有关；当覆冰量和气压一定时，绝缘子的最低冰闪电压均随着等值盐密( esdd )或覆冰水电导率的增加而呈乘幂关系降低，并逐渐趋于饱和。 |
