System and Method for Calculating Power Using Contactless Voltage Waveform Shape Sensor

A method for calculating power using information measured at different nodes, the method comprising:

• providing an electrically conductive medium carrying alternating current (AC) electrical current, associated with an AC voltage, from a source node to a destination node;
• measuring the AC current through the electrically conductive medium at a first node;
• measuring the AC voltage on the electrically conductive medium at a second node;
• transmitting measurement data from a test node selected from a group consisting of the first node, the second node, and both the first and second nodes, the transmitted measurement data including a measured time-lag value, where the time-lag value is a duration of time between when data is measured, and when the data is transmitted;
• and,
• calculating power usage in response to the AC current measurement, the AC voltage measurement, and the time-lag value.

A system for calculating power using a contactless voltage phase sensor, the system comprising:

• a contactless alternating current (AC) current sensor configured to couple to a first node of an electrically conductive medium carrying AC current, associated with an AC voltage, from a source node to a destination node, the contactless AC current sensor having an output for supplying an AC current measurement;
• a contactless voltage phase sensor configured to couple to the first node without directing connecting to the electrically conductive medium, and having an output for supplying an AC waveform shape measurement;
• and,
• a calculator having an input port the accept the AC current measurement and the AC waveform shape measurement, the calculator having an output to supply a power usage value for the destination node in response to the AC current measurement, the AC voltage waveform shape measurement, and an AC voltage potential.

A system for calculating power using information measured at different nodes, the system comprising:

• an alternating current (AC) current sensor configured to couple to a first node of an electrically conductive medium carrying AC current, associated with an AC voltage, from a source node to a destination node, the AC current sensor having an output for supplying AC current measurement data;
• an AC voltage sensor configured to couple to a second node, and having an output for supplying AC voltage measurement data;
• wherein a test node selected from a group consisting of the first node, the second node, and both the first and second nodes, transmits measurement data including a measured time-lag value, where the time-lag value is a duration of time between when data is measured, and when the data is transmitted;
• and,
• the system further comprising:
• a calculator having an input to accept the AC current measurement data, the AC voltage measurement data, and the time lag values, an output to supply destination node power usage data in response to the inputs.