Xu Xin, Zhao Maotai, Zhu Jie, Yuan Yuzheng. The Research and Realization of a New Intelligent Transformer Calibrator[J]. Geomatics and Information Science of Wuhan University, 1999, 24(1): 86-89.
Citation:
Xu Xin, Zhao Maotai, Zhu Jie, Yuan Yuzheng. The Research and Realization of a New Intelligent Transformer Calibrator[J]. Geomatics and Information Science of Wuhan University, 1999, 24(1): 86-89.
Xu Xin, Zhao Maotai, Zhu Jie, Yuan Yuzheng. The Research and Realization of a New Intelligent Transformer Calibrator[J]. Geomatics and Information Science of Wuhan University, 1999, 24(1): 86-89.
Citation:
Xu Xin, Zhao Maotai, Zhu Jie, Yuan Yuzheng. The Research and Realization of a New Intelligent Transformer Calibrator[J]. Geomatics and Information Science of Wuhan University, 1999, 24(1): 86-89.
The Research and Realization of a New Intelligent Transformer Calibrator
By analyzing sampling method of transformer errors, a newly developed intelligent transformer calibrator is presented. An orthogonal decomposation circuit based on 90° Phase-shift with phase-locked loop is realized. The calibrator can measure the ratio error f and phase displacement δ of both current and voltage transformer automatically.
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