Patent ID: 11874309
Assignee: S&C ELECTRIC COMPANY
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G

Claim 9:
10. A switching device for controlling power flow on at least one power line, the device comprising:
a current sensor for measuring primary current on the line, the current sensor including a Rogowski coil;
a first voltage sensor for measuring primary voltage on the line at one side of the switching device;
a second voltage sensor for measuring primary voltage on the line at another side of the switching device;
an analog-to-digital converter (ADC) for converting measurement signals from the current sensor and the voltage sensors to digital signals;
a phasor measurement unit (PMU) responsive to the primary current and voltage measurement digital signals and calibration data, the PMU calculating magnitude and phase angle synchrophasor data; and
a communications module for transmitting the PMU data.