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OwnerXiangyu Tan, Yong Lu +7inventors
InventorsXiangyu Tan, Yong Lu, Wenyun Li, Yi Ma, Lijun Tang, Wenbin Zhang, Xiaowei Xu, Fangrong Zhou, Xingmei Zhou
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An apparatus for non-contact current and voltage composite measurement includes: a current signal detection device, a voltage signal detection device, a zero-crossing detection circuit, and a control unit. The current signal detection device generates a current-induced electromotive force based on current flowing on the transmission line to be measured when there is current-voltage passing through the transmission line to be measured; the voltage signal detection device generates a voltage-induced electromotive force based on voltage flowing on the transmission line to be measured when there is current-voltage passing through the transmission line to be measured. The zero-crossing detection circuit performs zero-crossing detection on the current-induced electromotive force and the voltage-induced electromotive force to determine the phase difference between them. After calibrating the phase difference by the control unit, the control unit can simultaneously output current value, voltage value and power value of the transmission line to be measured.
An apparatus for non-contact current and voltage composite measurement, comprising:
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