Temperature Compensatory Methods of Optical Current Transformer
Yanbing Liu · Yibiao jishu yu chuanganqi · 2004
The main factors on temperature stability of optical current transformer were analyzed.The research progress of the two compensation methods(polarization analysis of incident light and the nonreciprocity of Faraday effect)was briefly summarized.Comparative measurement using permanent magnet as reference source applied in Optical Current Transformer was proposed to overcome the deficiency of the above ways.The influence of material's Verdet constant and linear birefringence caused by varying environmental factors could to compensated.Theory analysis of the method and related experiment results have proven its feasibility.