交联聚乙烯绝缘电缆防水的必要性与措施

The Necessity and Measures of Waterproofing of Cross-linked Polyethylene Insulated Cable

随着我国城市化建设的进一步推进,以及城乡结合程度日益密切。电力供应无论是在工业生产还是居民生活中都承担着及其重要的作用,不可或缺。在电力供应系统中,电缆线可谓是电力资源输送与供应不可或缺的重要设施。在以往的电力输送系统中,大都是采用油浸渍纸绝缘电力电缆线(简称为油纸电缆),油纸电缆最大的弊端就是一旦其受潮或遭到雨淋,将会直接导致电缆线绝缘失效。因此,在使用油纸电缆过程中,从贮存到投运的各个环节,人们都会因其防水性能差,而有针对性地对其采用必要的防水防潮措施。最近几年来,随着交联聚乙烯电缆生产工艺的日趋成熟,加之交联聚乙烯绝缘电缆优良的使用性能,人们逐渐开始用交联电缆取代原来的油纸电缆。在交联聚乙烯绝缘电缆日益普及的当下,做好交联聚乙烯绝缘电缆的防水处理措施十分必要。文章将围绕“交联聚乙烯绝缘电缆防水的必要性与措施”这一话题,分析了交联电缆受潮或进水的原因、交联电缆受潮带来的危害、交联电缆受潮浸水作用机理,基于此,进一步分析了交联电缆横纵向阻水结构,并提出几点行之有效的交联聚乙烯绝缘电缆防水措施。

With the further development of urbanization in China,the integration of urban and rural areas is becoming more and more close.Electricity supply,both in industrial production and in the lives of residents,has played an important role and is indispensable.In the power supply system,cable lines are indispensable for the transmission and supply of power resources.In the past power transmission system,most of them are using oilsoaked paper insulation power cable(referred to as oil paper cable),the biggest drawback of oil paper cable is that once it is damp or rain,will directly lead to cable insulation failure.Therefore,in the process of using oil paper cable,from storage to transportation of all links,people will be because of its poor waterproof performance,and targeted to its use of the necessary waterproof and moisture-proof measures.In recent years,with the increasing maturity of the cross-linking polyethylene cable production process,coupled with the excellent performance of cross-linked polyethylene insulation cable,people gradually began to replace the original oil paper cable with cross-linking cable.At the present moment of the increasing popularity of cross-linked polyethylene insulated cables,it is necessary to do a good job of waterproofing of cross-linked polyethylene insulation cables.Based on the topic of"the necessity and measure of waterproofing of cross-linked polyethylene insulated cables",this paper analyzes the causes of cross-linked cable moisture or inlet water,the hazards caused by cross-linking cable sweds,and the mechanism of tidal flooding of cross-linked cables.And put forward a number of effective cross-linked polyethylene insulation cable waterproofing measures.