Apparatus and system for non-contact current and voltage composite measurement

An apparatus for non-contact current and voltage composite measurement, comprising:

• a current signal detection device, a voltage signal detection device, a zero-crossing detection circuit, and a control unit;
• wherein the current signal detection device and the voltage signal detection device both comprises an openable and closable cylindrical housing for each;
• wherein the zero-crossing detection circuit is respectively connected to the current signal detection device, the voltage signal detection device, and the control unit;
• wherein the current signal detection device is fastened to a transmission line to be measured and is used to generate a current-induced electromotive force based on a current flowing on the transmission line to be measured when a current-voltage passes through the transmission line to be measured;
• wherein the voltage signal detection device is fastened to the transmission line to be measured and is used to generate a voltage-induced electromotive force based on a voltage flowing on the transmission line to be measured when a current-voltage passes through the transmission line to be measured;
• wherein the zero-crossing detection circuit is used to calculate a phase difference between the current-induced electromotive force and the voltage-induced electromotive force and to send a settlement result to the control unit;
• wherein the control unit is used to calibrate the phase difference and then output a current value, a voltage value, and a power value of the transmission line to be measured.