宁夏引黄灌区输电线路绝缘子污秽分析及防污闪运维建议

Analysis on Contaminants of Insulators for Transmission Line in Ningxia Yellow River Irrigation Area and Suggestions on Anti-pollution Flashover Operations

针对宁夏引黄灌区输电线路绝缘子污秽成分不清、受环境影响程度不明等问题,将宁夏引黄灌区环境细分为5类,分别为工业、农业、城镇居民区、荒漠、草场,并取对应环境下的绝缘子污秽样品进行微观形貌、元素含量、晶体成分及阴阳离子成分及含量检测分析,同时对比分析引黄灌区与非灌区绝缘子的积污特性差异。结果表明:引黄灌区土壤成分决定了绝缘子污秽的基础成分;工业、农业环境对污秽微观结构及不同成分含量影响较大,城镇居民区环境次之;引黄灌区绝缘子积污程度明显高于非灌区。为进一步提高宁夏引黄灌区输电线路的运行可靠性,提出了防污闪运维建议,以供相关运维单位参考。

Aiming at the contaminant composition of transmission line insulator in Ningxia Yellow River irrigation area are not clear, and the degree of environmental impact is unknown, we subdivided the environment of Ningxia Yellow River irrigation area into 5 categories: industry, agriculture, urban residential area, desert, and grassland,and insulator contaminants samples in the corresponding environments were taken to conduct microscopic morphology, element content, crystal composition, anion and cation composition and content detection and analysis. Meanwhile, the pollution accumulation characteristics of insulators in irrigated and non-irrigated areas were compared and analyzed. The results show that the soil composition in the Yellow River irrigation area determines the basic composition of insulator contaminants. The industrial and agricultural environment have bigger influence on the micro-structure and different ingredients content of the insulator contaminants, and the urban residential area is followed. The pollution accumulation degree of insulators in irrigated areas was obviously higher than that in non-irrigated areas. In order to further improve the operation reliability of the transmission lines in Ningxia Yellow River irrigation area, some suggestions for anti-pollution flashover operation and maintenance are put forward, which can be use as reference for relate operation and maintenance units.