绝缘子表面自然污秽成分分析及其研究展望

Study Status and Prospect of Natural Contamination Component on Insulator Surface

为研究自然污秽化学成分对污秽度评估和污闪电压的影响,总结了国内外绝缘子表面自然污秽成分的研究现状,归纳了污秽的成分、分类和测量方法;分析主要污秽成分的来源、污秽评估与污秽成分间的关系、污闪电压与污秽成分间的关系,发现用等值盐密(equivalent salt deposit density,ESDD)进行污秽度评估存在不足,需要加以修正,并提出了修正思路;另外,在相同外界条件下,不溶性污秽颗粒度也会影响污闪电压的大小,从污秽层附水量方面进行了解释。指出需加强有机污秽对污秽度评估和污闪电压等影响的研究,建立新的污秽度评估体系。

In order to learrn the influence of natural contamination component on contamination evaluation and contamination flashover voltage, the study status of natural contamination component on insulators surface was researched. The component, classification and measurement methods of natural contamination were summed up. Sources of main natural contamination component, relationships between contamination evaluation and natural contamination component, and between contamination flashover voltage and natural contamination component were studied. It was found out that main domestic natural contamination component came from the soot type air pollution; contamination evaluation with equivalent salt deposit density （ESDD） was insufficient. The relationship between contamination flashover voltage and insolubility contamination granularity was found out. Finally, some advises about studying natural contamination component are given out. It is necessary to focus on studying the influence of organic contamination and establish a new contamination evaluation system.