绝缘油中溶解气体组分含量的气相色谱测定(溶解平衡法)浅析

Superficial Discussion on Determination of Component Contents of Gases Dissolved in Insulating Oil by Gas Chromatography( Dissolution Equilibrium Method)

目前绝缘油中溶解气体组分含量的测试基本都采用了气相色谱测定(溶解平衡)法,即机械振荡法,但国家标准、目前的培训教材未对一些关键部分进行说明,导致一部分油务工作人员不能正确理解标准和处理所遇到的问题,降低了测试数据的准确性与可靠性。根据多年的工作经验并结合理论,对油中溶解气体的最小检测浓度、峰的识别与处理、平衡气的加入量、用注射器所取油样在运输过程中产生气泡后的处理等问题进行了阐述,并提出了处理措施,对进一步规范和提高测试水平,有效保证设备的安全运行有一定的意义。

At present, the determination of component contents of gases dissolved in insulating oil always uses gas chromatography method （dissolution equilibrium method）, that is, mechanical vibration analysis. But there are some key parts are not described in the national standards and the current training materials, which leads to a part of the oil workers can not correctly understand and deal with the problems encountered, and reduce the accuracy and reliability of test data. Based on working experiences and combined with the theory of chromatographic method, the minimum detectable concentration, peak identification and treatment, balance gas volume, the treatment of bubbles caused by sampling with syringe during the transportation are described and the treatment measures are proposed, which is of a certain significance for the further standardization and improvement of the test level, and for ensuring the safe operation of equipment effectively.