气相色谱法在油中溶解气体中的应用研究

Applicative Study on Gas Chromatography of Dissolved Gases in Oil

随着经济的发展,对电力设备在线监测技术有了更高的要求,电力变压器作为电力系统的枢纽,对其在线监测尤其重要。在线监测、分析电力变压器油中溶解气体是诊断主变运行状态及内部过热、放电等缺陷的重要检测手段。首先介绍了气相色谱法原理以及气相色谱原理在油中溶解气体监测中的应用,然后阐述了对溶解气体氢气超标的某220 kV变压器油的气相色谱分析以及在此基础上进行的故障诊断和应对处理。

With the development of the economy,there are higher requirements for online monitoring technology of power equipment.As the hub of the power system,online monitoring of power transformers is particularly important.Online monitoring and analysis of dissolved gases in power transformer oil are important detection methods for diagnosing the operating status of the main transformer and internal overheating,discharge and other defects.This paper first describes the principle of gas chromatography and its application in the monitoring of dissolved gases in oil.It second reports gas chromatography analysis of the dissolved gas hydrogen in a 220 kV transformer oil that exceeded the standard,and fault diagnosis and countermeasures carried out based on the analysis result.