Research On Application Technology Of Optical Current Transformer In Distribution Network

In this paper,we researched the main structure,error influencing factors,solutions and practical application of the fiber current transformer.The main purpose of this paper is to determine the production scheme of optical current transformer current transformer.And to analysis the application effect of optical current transformer in actual power system,and lay the foundation for the promotion of the optical current transformer.On the basis of analyzing the research progress of optical fiber current transformer at home and abroad,the structure of optical fiber current transformer is determined from the angle of theoretical analysis.The scheme of making optical fiber by using diamagnetic material increases the anti-interference ability of the optical fiber current transformer.The optical fiber current transformer is compared with the electromagnetic principle transformer in the application device,and the data error is compared,and the application effect is confirmed.In the aspect of current transformer structure,the advantage of linear internal reflection type transformer is demonstrated from two angles of anti-interference,detection and ease of use,and it is determined as the basic structure of mutual inductor.Three main factors affecting are determined,such as temperature,vibration and fiber Verdet constant.The effect of birefringence is reduced by using ultra low double folded high refraction fiber and circular current transformer structure.The traditional transformer and the optical fiber current transformer are used to measure the same equipment,to intercomparison measurement data.In the final,the use of an optical fiber current transformer can produce good economic and social benefits.