Intelligent electronic device and method thereof

1. A method of generating an identifier for an electrical parameter measured by an IED, the method comprising:

obtaining attributes of the electrical parameter; and

generating an identifier for the electrical parameter according to the attributes;

wherein the attributes of the electrical parameter comprise:

a parameter group representing a group of electrical parameters with similar functions;

a parameter type representing specific type of the parameter group;

an update rate representing a period between times of current electrical parameters measured by the IED and next electrical parameters measured by the IED; and

a channel type representing a specific channel where the electrical parameter is measured.

2. The method of claim 1 , where the attributes of the electrical parameter further comprise channel identification representing a specific harmonics order for harmonics measurement.

3. An intelligent electronic device (IED) comprising:

at least one sensor configured for sensing at least one electrical parameter of electrical power distributed from an electrical distribution system to a load;

at least one analog-to-digital converter coupled to the at least one sensor and configured for converting an analog signal output from the at least one sensor to digital data;

a DSP (Digital Signal Processor) coupled to the at least one analog-to-digital converter, and configured to perform digital signal processing on the digital data from the at least one analog-to-digital converter; and

a CPU coupled to the DSP via a hardware path;

wherein the DSP and the CPU are configured to communicate using a transmission protocol including a data header and a data payload based on the hardware path; and

wherein the data header includes a field of parameter group, the data payload includes fields of a parameter type, an update rate and a channel type; the parameter group represents a group of electrical parameters with similar functions; the parameter type represents specific type of the parameter group; the update rate represents a period between times of current electrical parameters measured by the IED and next electrical parameters measured by the IED; the channel type represents a specific channel where the electrical parameter is measured.

4. The IED of claim 3 , wherein the CPU communicates with the DSP on a dedicated hardware bus.

5. The IED of claim 4 , where the dedicated hardware bus uses serial transmission.

6. The IED of claim 4 , where the dedicated hardware bus uses a transmission protocol supported by the CPU and the DSP.