Frequency domain dielectric spectroscopy (FDS) is an effective method reflecting the changes of ageing status of silicone oil-immersed insulation paper. For better evaluating the ageing status of silicone oil-immersed insulation paper, an evaluation method was studied by analysing the ageing kinetic model and results of FDS. First, the method to separate the different polarization losses and conductivity loss from the results of FDS was studied. Then, based on the idea of ageing correction translation coefficient and time-varying pre exponential factor, the zero order ageing dynamic model was modified, which combines the ageing kinetic model with the results of FDS. Finally, the evaluation method for the degree of polymerisation (DP) of silicone oil-immersed paper was proposed, and experiments were conducted to obtain the parameters in the modified model and then to verify the proposed method. The results show that the proposed method can be used to evaluate the DP effectively.

中文翻译：

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使用频域介电谱估计浸没在硅油中的绝缘纸的聚合度

频域介电谱（FDS）是反映硅油浸绝缘纸老化状态变化的有效方法。为了更好地评价硅油浸绝缘纸的老化状况，通过分析老化动力学模型和FDS结果，研究了一种评价方法。首先，研究了从FDS结果中分离出不同极化损耗和电导损耗的方法。然后，基于老化修正平移系数和时变预指数因子的思想，对零阶老化动力学模型进行了修正，将老化动力学模型与FDS结果相结合。最后提出了硅油纸聚合度(DP)的评价方法，并通过实验获得了修正模型中的参数，并对所提方法进行了验证。结果表明，该方法可以有效地评价DP。