500kV变压器油含气量检测及异常分析

对变压器油含气量的产生过程、含气量发生异常时对电气设备的危害做了简要介绍,评价了国内现有的几种变压器油含气量检测方法的优缺点,并以气相色谱法为例,对一些超过相关标准的异常数据进行了分析总结,指出了引起含气量超标的可能因素,建议采取变压器注油前抽真空、机组检修时滤油等防范措施来避免含气量超标。

Detection and Anomaly Analysis of the Gas Content of 500 kV Transformer Oil

This article describes the generating of the gas content of transformer oil,the hazards to electrical equip- ment when gas content is abnormal, and evaluates the advantages and disadvantages of several detection methods of gas content of transformer oil. Taking gas chromatography for example, it analyzed and summarized the abnormal data in excess of the relevant standard, indicated the possible factors which make gas content exceed the standards, and suggested adopting the precautionary measures such as picking up the suction before the transformer oiling or filtering when the unit is checked to prevent gas content exceeding standard.