树脂浇注干式变压器新气候、环境、燃烧特性及要求分析
2021-08-20张春喜卢达烽伦汉彬
张春喜 卢达烽 伦汉彬


摘要:针对干式变压器新标准中的气候、环境和燃烧特性新规定进行了识别,并分析评估了新规定对应试验方法对变压器产品的影响和新要求。从产品设计、制造工艺和材料选择等3个方面分析了如何满足新特性要求并提出了相应的解决方案。根据分析结果及解决方案设计制造了一台标准中所规定最大可测容量的环氧树脂浇注干式变压器样机,并一次性通过了产品测试,结果表明所提出的分析结果和解决方案是正确有效的,可作为对气候和环境特性有更高要求变压器的设计和制造指导。
关键词:树脂浇注;干式变压器;气候;环境;燃烧特性
中图分类号:TM412文献标志码:A文章编号:1009-9492(2021)11-0323-05
Analysis on New Climate,Environment,Combustion Characteristicsand Requirements of Cast-resin Transformer
Zhang Chunxi,Lu Dafeng,LunHanbin
( Siemens Transformer ( Guangzhou ) Co.,Ltd.,Guangzhou 510530,China )
Abstract:The climatic,environmentaland firebehavior characteristicsin new version dry-type transformer standard wereidentified,the influences and requirements from the corresponding testing methods were evaluated respectively.Analysis from product design,manufacturing technology and material combination point of view was implemented,and relevant solutions were proposed accordingly.A unit of the maximum rating power cast-resin transformer according to the testing limit was designed and manufactured based on the analysis results and proposed measures,and passed the product test at one time.The testing results show that the analysis results and proposed solution measures are correct and effective,and can be used as guidelines to design and manufacture dry-type transformer with higher climatic,environmental and fire behavior classes.
Key words:cast-resin;dry-type transformer;climatic;environmental;fire behavior characteristics
0 引言
樹脂浇注干式变压器自1965年发明以后,以其优异的环保和防火防爆特性得到了广泛的应用,特别是在需要深入负荷中心的场景,如楼宇、商场、酒店内等。此外不同的气候、环境条件对环氧树脂浇注干式变压器的耐受低温、潮湿等方面能力提出了要求。尤其是随着近年来社会工业的发展及人类活动范围的日益扩大,干式变压器的应用场景也变得越来越丰富,如遍布全球的陆地及海上风电场、远洋轮渡、海上钻井平台、极地科考等,这些对干式变压器的耐受气候和环境特性提出了更高的要求。
干式变压器标准[1-2]规定了干式变压器气候等级、环境等级、燃烧特性等级及对应的试验方法,其中2018版IEC 标准[2]根据近年来产品新应用场景规定了更高的气候等级和环境等级。……
