flashover voltage造句
例句与造句
- 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。 - 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。 - 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。 - 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。 - 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。 - It's difficult to find flashover voltage in a sentence. 用flashover voltage造句挺难的
- All the transmission lines of west - east electricity transmitting project are inevitable to crossing the high altitude and icing areas . for the reducing of the air pressure and the absolute humidity , the electricity strength of insulators will drop obviously . therefore , it must be considered the effect on the insulators " flashover voltage caused by the change of altitude and ice when the insulation cooperation of transmission lines are being designed
“西电东送”工程的所有输电线路都不可避免的要经过高海拔和覆冰地区，由于大气压力和绝对湿度的降低会使绝缘子的电气强度显著下降，因此在进行输电线路的绝缘配合设计时必须考虑到海拔高度和覆冰的变化对绝缘子的闪络电压影响。 - Test results indicated : with the hoist of altitude , the increase of ice amount and the rise of pollutant , the average flashover voltage reduced . the character exponent generally depends on the insulator profile , ice amount , ice state and pollution severity etc . by means of a high - speed camera , a data acquisition system and high voltage test facilities , a series of the flashover processes on ice surfaces were record . the experimental results form this study and the subsequent theoretical analyses suggested : the thermal ionization of the air in front of an arc root resulted in arc movement ; the electrostatic force had an auxiliary effect of impelling arc propagation ; the electrical
通过对摄像机、数据采集系统及高压试验装置记录覆冰绝缘子表面闪络电弧的发展过程的试验结果进行理论分析得出：弧根周围空气的热电离导致了电弧的发展，静电场力对电弧的发展起到了加速作用，电击穿仅发生在闪络最终的跳跃阶段；通过测量闪络过程中的放电电压、泄漏电流、闪络时间、覆冰水电导率、电弧长度及电弧半径等参数，得到了不同阶段电弧（电弧起弧阶段、电弧发展阶段及完全闪络）的发展速度、临界电弧长度均随覆冰水电导率的增加而减小。 - According to secondary electron emission avalanche ( seea ) theory , the effects of insulating materials , shapes , electrode structures of vacuum insulator on surface flashover and its mechanism , design optimization methods for vacuum insulator to improve surface flashover voltage by selecting insulating material , shape and electrode structure are reviewed
摘要根据二次电子发射崩( seea )理论，综述了真空绝缘子的绝缘介质材料、几何形状和电极结构对绝缘子沿面闪络的影响和机理过程，以及从这三方面优化设计真空绝缘子以提高其沿面闪络电压的方法。 - The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage , this paper obtained : for the single porcelain insulator , the single glass insulator and the composite insulator bridged completely by icicle , the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds , due to numerous non - polar arcs on the composite surface , the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period , dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和结论如下：在人工气候室内，根据不同覆冰绝缘子正、负极性下的闪络试验结果，得出负极性电弧金属阴极的强电子发射能力造成了单片瓷、玻璃绝缘子及被冰凌桥接的合成绝缘子有较低负极性冰闪电压；正极性电弧金属阳极侧产生高电阻区所处位置的差异使得瓷和玻璃绝缘子串具有明显的极性效应；覆冰较少时，合成绝缘子表面出现数量较多的非极性电弧使合成绝缘子无极性效应。利用覆冰期内平均闪络电压的试验方法，对不同材质和结构的绝缘子在覆冰、低气压和污秽共存环境中的直流闪络特性进行了研究。试验结果表明，直流平均闪络电压随着海拔的升高、覆冰量的增加以及污秽度的增加而降低，且其特征指数与绝缘子结构、覆冰量、覆冰状态、污秽度等有关。 - Based on a series of tests and investigations , this paper draws some conclusions as following by processing and analyzing the test data . the minimum icing flashover voltage of composite insulators decreases with the increase of ice amount , and the tendency of it accords with exponential function . however , the relation of the minimum icing flashover voltage with icing water conductivity accords with power function
通过大量的试验研究工作，对试验数据进行拟合和分析处理，得到了如下结论： 1 )合成绝缘子最低冰闪电压随覆冰重量的增加而降低，且其下降趋势符合指数函数规律，与覆冰水电导率的关系符合幂函数规律。 - The paper studied withstand voltage level , influence factors , breakdown process and breakdown mechanism of covered with snow or ice through some theory calculation results , many test data and phenomena . the paper got the conclusions that withstand voltage strength of insulator covered with snow or ice descended largely , and the amount of ice or snow build - up , number of flashover , string length , environment temperature and leak current etc had obvious effects on flashover voltage values of insulators
通过大量的试验数据和现象研究冰雪条件下绝缘子的耐压水平、影响因素及其击穿机理，如串长的影响、环境温度、绝缘子形状及冰的干湿程度、闪络次数、冠雪量和积冰量的影响、雪的密度、气压和湿度的影响等，并对试验结果与理论分析结果进行了对比，分析其是否一致。 - The contribution of the paper can conclude as following : according to the laboratory investigations carried out on the ac flashover performance of two types of porcelain insulators and four types of composite insulators at the atmospheric environment of low pressure at a high altitude with pollution and icing , the relations between the minimum ac flashover voltage and the ice amount , the atmospheric pressure as well as the contamination level are obtained
本文研究的主要工作和结论如下：根据不同绝缘子在人工气候室内模拟海拔3500m以上低气压下覆冰和污秽共存环境中的交流闪络特性的试验研究结果，得出了最低闪络电压与覆冰量、海拔(低气压)和污秽度等因素之间的规律。 - 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3500m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。