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Vol. 192, Issue 9, September 2015, pp. 81-89




Research on Electronic Transformer Data Synchronization Based on Interpolation Methods
and Their Error Analysis

* 1, 2 Pang Fubin, 1 Yuan Yubo, 1 Bo Qiangsheng and 1 Ji Jianfei

1 Jiangsu Electric Power Company Research Institute, Nanjing 211103, China
2 School of Electrical Engineering, Southeast University, Nanjing 210096, China

* E-mail: pangfubin2006@163.com


Received: 1 August 2015 /Accepted: 31 August 2015 /Published: 30 September 2015

Digital Sensors and Sensor Sysstems


Abstract: In this paper the origin problem of data synchronization is analyzed first, and then three common interpolation methods are introduced to solve the problem. Allowing for the most general situation, the paper divides the interpolation error into harmonic and transient interpolation error components, and the error expression of each method is derived and analyzed. Besides, the interpolation errors of linear, quadratic and cubic methods are computed at different sampling rates, harmonic orders and transient components. Further, the interpolation accuracy and calculation amount of each method are compared. The research results provide theoretical guidance for selecting the interpolation method in the data synchronization application of electronic transformer.


Keywords: Electronic transformer, Data synchronization, Interpolation method, Interpolation error.


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