And it would last a long time because of the flashover development , it ' s difficult to data acquisition or logging the leakage current waveform by currently instruments 并且泄漏电流的持续时间长,试验中利用现有仪器观测和记录整个闪络过程难以实现。
The iced insulators flashover is one of the main faults of the ehv transmission lines in icing regions . icing is especial form of pollution 对覆冰地区的超高压线路,绝缘子覆冰引起的闪络已经成为最主要的故障之一,对电力系统的安全运行造成了极大的威胁。
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 。
The insulation characteristic of insulator in vacuum is researched in the process of the high voltage breakdown along the insulator surface in vacuum , which is called vacuum surface flashover 绝缘子的真空表面绝缘特性研究真空下的高压沿绝缘子表面击穿物理过程,称真空表面闪络过程。
The flashover performance of alumina ceramics can be evaluated based on the above results , and it is helpful for choosing a proper material used in vacuum insulation system . 4 本研究结果为评价材料在真空中的沿面闪络性能提供了一个参考标准,对正确选择真空用陶瓷绝缘材料有重要意义。
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。
This phenomenon indicates that there is closed relationship between the development of local arc , the flashover of the insulators and the discharge activity initiated at the icicle tips 这说明,覆冰绝缘子的起始放电和局部电弧的发展乃至整串的闪络与发生在冰柱尖端的起始放电活动有非常密切的关系。
The flashover of iced insulators is also caused by the leakage current . the variety and development of the leakage current is one of the main factors to cause the iced insulators flashover 覆冰绝缘子的闪络也是由泄漏电流引起的,泄漏电流的变化与发展是导致其是否能发展成完全闪络的主要因素之一。
Some basic concepts of insulator contamination are introduced firstly . existing methods of avoiding contamination flashover and methods of detecting contamination degree of insulators are discussed in details 介绍了变电污秽及其相关概念,并对国内外现有的变电污秽防治方法和变电污秽在线监测方法进行了研究。
Some basic concepts of insulator contamination are introduced firstly . existing methods of avoiding contamination flashover and methods of detecting contamination degree of insulators are discussed in details 首先介绍了变电污秽及其相关概念,并对国内外现有的变电污秽防治方法和变电污秽在线监测方法进行了研究。
an unintended electric discharge (as over or around an insulator)
百科解释
A flashover is the near-simultaneous ignition of most of the directly exposed combustible material in an enclosed area. When certain organic materials are heated they undergo thermal decomposition and release flammable gases.