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STUDY ON UITRASONIC MEASUREMENT PRINCIPLE AND DEVICE FOR WINDING DEFORMATION
Author(s): 
Pages: 23-25,30
Year: Issue:  1
Journal: PROCEEDINGS OF THE CHINESE SOCIETY OF UNIVERSITIES

Keyword:  绕组变形超声波检测原理装置;
Abstract: A new measurement method for transformer winding deformation is proposed on the basis of ultrasonic reflection principle. The basic measurement principle for winding deformation, the construction and operation principle of measurement device are described in detail, and the factors such as oil temperature, oil passages and the others, which affect the measurement accuracy of winding deforma tion are discussed in the paper as well. Model transformer is manufactured in the laboratory, and corresponding experi ments for winding deformation measurement are performed with developed prototype. Lots of test and measurement data are obtained ,and indicate that the ultrasonic measurement method for winding deformation is correct and feasible. The ultrasonic measurement device for winding deformation is more advanced than the traditional ones used at present, and possess many advantages, such as high reliability, on-line measurement, directly showing the figure and position of winding deformation in screen, etc These research work presented in the paper lays a good foundation for measurement of transformer winding deformation.
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