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基于光声光谱检测的变压器油中溶解乙炔气体的压强特性

, PP. 112-119

Keywords: 溶解气体检测,光声光谱,谐振频率,品质因数,光声池常数,气体压强特性

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Abstract:

变压器油中溶解气体的检测及分析是运行电力变压器故障诊断最有效的方法之一。气体光声光谱检测技术能很好地应用于气体检测,气体压强对光声光谱检测有重要影响。论文从理论上推导出气体压强与气体吸收系数、谐振频率、光声池品质因素、池常数及气体光声电信号的函数关系。以构建的可调谐光声光谱装置对变压器油中主要故障特征气体C2H2进行实验,验证了上述函数关系的正确性,得到在气体吸收未发生饱和效应时,C2H2光声电信号与气体压强的函数关系当0

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