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Vol. 162, Issue 1, January 2014, pp. 251-257




Analysis of ECT Synchronization Performance Based on Different Interpolation Methods

Yang Zhixin, Ji Jianfei, Yuan Yubo, Bu Qiangsheng

Affiliation Jiangsu Electric Company Research Institute, 211103, China

E-mail: jijianfeisgcc@163.com


Received: 22 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems


Abstract: There are two synchronization methods of electronic transformer in IEC60044-8 standard: impulsive synchronization and interpolation. When the impulsive synchronization method is inapplicability, the data synchronization of electronic transformer can be realized by using the interpolation method. The typical interpolation methods are piecewise linear interpolation, quadratic interpolation, cubic spline interpolation and so on. In this paper, the influences of piecewise linear interpolation, quadratic interpolation and cubic spline interpolation for the data synchronization of electronic transformer are computed, then the computational complexity, the synchronization precision, the reliability, the application range of different interpolation methods are analyzed and compared, which can serve as guide studies for practical applications.


Keywords: Synchronization, Interpolation, Electrical current transformer (ECT).


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