为了将X射线直接数字成像技术引入到变压器的无损检测中，需要确定X射线对变压器油中溶解气体的组分有无影响。利用便携式高频X射线机对带电压的变压器油进行定能量和定时间的照射试验，结果表明，300kV管电压X射线的辐射对变压器油中的溶解气体组分没有影响。该结果可为X射线数字成像透视检测系统对电力充油设备进行可视化检测给予明确、充分的证据，同时为基于X射线的电力设备数字成像系统的应用范围提供了技术支持。

In order to apply the Xray direct digital imaging technology to the field of nondestructive testing of the transformer, it is necessary to determine whether there exists impact of Xray irradiating on the insulating oil. This paper proposed a research of using Xray to irradiate the transformer oil. The concrete content of the study is to irradiate the applied voltage for given energy and given time by portable high frequency Xray generator. Experimental results show that Xray has little effect on the gas component of transformer oil. This study will provide clear and adequate basis for applying the Xray direct digital imaging technology to the field of nondestructive testing of oil filled electric equipment and it will offer technical support for application of electrical equipment based on digital Xray imaging system as well.