变压器油中溶解气体分析和故障诊断  

Dissolved Gas Analysis in Power Transformer Oil and Fault Diagnosis

作　　者：陈浩 鲁旭臣 郭铁 张璐 王帅 

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]辽宁电力建设监理有限公司,辽宁沈阳110006

出　　处：《东北电力技术》2017年第10期29-32,共4页Northeast Electric Power Technology

摘　　要：变压器油中溶解气体分析技术具有操作简单快速、无需设备停电等优点,能够及时发现变压器内部的潜伏性故障,对保证电力系统安全运行具有重要意义。在分析变压器内部主要故障类型的基础上,对变压器油中溶解气体分析与故障诊断方法进行了研究,并结合实际故障案例,对该故障诊断方法的准确性加以验证。结果表明,油中溶解气体分析能够检测出多种高压试验无法发现的缺陷与潜伏性故障,并对故障类型进行初步定性,其分析结果可作为变压器状态综合评估的重要依据。Dissolved gas analysis of transformer oil can efficiently detect latent faults in transformers which can be simply carried out oncharged equipment ensuring the reliable operation of power system. In this paper, method of dissolved gas analysis and fault diagnosisare investigated based on the introduction of major fault types in power transformer. Combined with the actual fault cases, the accuracyof the fault diagnosis method is also verified. The results show that dissolved gas analysis of transformer oil can detect some kinds of de-fects and latent faults which can not be found in high-voltage tests. Simultaneously, the type and characteristic of a certain fault can beinitially indicated which will be used as an important reference of transformer status comprehensive evaluation.

关 键 词：变压器油 溶解气体分析 特征气体 故障诊断 

分 类 号：TM621.8[电气工程—电力系统及自动化]