中文摘要：

油纸绝缘系统频域介电谱受测试环境温度影响显著,油隙是油纸绝缘系统的重要组成部分。以油隙的交流电导率为中间过程量,研究了不同温度油隙频域介电谱的归算方法：首先,通过公式推导得到了油隙相对复介电常数与其交流电导率的关系式;然后,通过实验测试与结果分析,归纳并证明了温度对油隙交流电导率频域谱的影响规律,同时提出了由温度下的油隙交流电导率频域谱向参考温度进行归算的公式;最后,基于上述研究提出了一种不同温度下油隙频域介电谱的归算方法,并对所提出的方法的有效性进行了验证。研究结果表明,该归算方法能够有效的将不同温度下的油隙频域介电谱归算至参考温度。

英文摘要：

The temperature effect on the frequency domain dielectric spectrum of oil-paper insulation is very obvious. Oil gap is one of the most important components of oil-paper insulation. In this paper, a normalizing method was studied based on the AC conductivity of oil gap： firstly, the correlation between relative complex permittivity and AC conductivity was deduced; then, on the basis of experiments, a law of temperature effect on the frequency domain AC conductivity spectrum of oil gap was proposed and testified. Meantime, the normalizing equations were proposed; finally, on the basis of above studies, a normalizing method was proposed which can normalize the frequency domain dielectric spectrum of oil gap from testing temperature to the reference temperature. The studied results show that on the basis of proposed method, the frequency domain dielectric spectrum of oil gap can be normalized effectively.