变压器油中含气量超标原因分析及对策  

Cause analysis and countermeasures of excessive gas content in transformer oil

作　　者：曹松彦[1] 杨俊[1] 柯于进[1] CAO Songyan;YANG Jun;KE Yujin(Xi＇an Thermal Power Research Institute Co.,Ltd.,Xi＇an 710054,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2018年第8期138-142,共5页Thermal Power Generation

摘　　要：变压器油中含气量是保证变送电装备安全运行的重要指标,超高压大容量变压器油中含气量超标时,会加速油品和绝缘材料的老化,严重时导致击穿,影响设备安全运行。本文在研究油中溶解气体组分和特性的基础上,参照国内外相关标准和厂家规定,对某集团发电企业330 kV及以上等级的336台变压器运行油中含气量进行调研,分析含气量超标原因,提出对应措施,并指出油中含气量指标对保证变压器绝缘性能和设备密封及防止油品老化的重要性。The gas content in transformer oil is an important indicator to ensure the safe operation of transmission equipment. When the content of the ultra-high voltage and large-capacity transformer oil exceeds the standard value, it can accelerate the aging of the oil and insulation materials. In severe cases, it can cause breakdown and affect the safe operation of the equipment. In this study, based on the study of dissolved gas components and characteristics in the oil, with reference to relevant domestic and foreign standards and manufacturer＇s regulations, the gas content of 336 sets of transformers in 330 kV and above grades of a certain group power generation enterprises is investigated. The reasons of excessive gas content are analyzed and the corresponding measures are put forward. And the significance of the gas content indicator in the oil to ensure the insulation performance of the transformer, the sealing of the equipment, and preventing oil aging is emphasized.

关 键 词：变压器 绝缘油 含气量 空气漏入 真空脱气滤油 绝缘材料 老化 

分 类 号：TM855[电气工程—高电压与绝缘技术]