【摘要】 油中溶解气体监测法是一种重要的变压器故障诊断与运行状态评估方法。本文提出了一种基于单气室真空脱气的变压器油中气体光谱分析法，介绍了基于此方法的变压器油中溶解气体监测装置的原理与结构。由于每次检测时气室内的温度和压强不同，需要进行温度压强补偿实验，实验验证了温度压强补偿方法的有效性。最后利用设计的装置对混合气体进行了定量分析实验。结果表明：本文设计的基于单气室真空脱气的油中气体光谱分析法具有良好的效果，验证了设计方案的可行性。与常见的红外光谱法监测气体含量的方案相比，本方案不需要氮气作为背景气体，降低了运行成本，提高了装置的自动化程度。更多还原

【Abstract】 The dissolved gas monitoring method in oil is an important method for transformer fault diagnosis and operational status evaluation. A spectral analysis method of gas in transformer oil based on single gas chamber vacuum degassing was presented in this paper, and the principle and structure of the dissolved gas monitoring device in transformer oil based on this method were introduced. Due to the different temperature and pressure in the gas chamber during each detection, temperature and pressure compensation experiments were required, which verified the effectiveness of the temperature and pressure compensation method. Finally, the mixed gas was analyzed quantitatively by the designed device.The results show that the spectral analysis method of gas in oil based on single chamber vacuum degassing designed in this paper has a good effect, which verifies the feasibility of the design scheme. Compared with the common infrared spectroscopy methods for monitoring gas content, this scheme does not require nitrogen as the background gas, reducing the operating costs and improving the automation level of device.更多还原