Systems and methods for channel asymmetry estimation and evaluation

A method, comprising:

• receiving a local current measurement of a first current and a local voltage measurement along an electrical line;
• transmitting a first signal indicative of the local current measurement and the local voltage measurement to an intelligent electronic device (IED) of an electric power delivery system via a first communication channel;
• receiving a second signal indicative of a remote current measurement of a second current and a remote voltage measurement of a second voltage along the electrical line from the intelligent electronic device (IED) via a second communication channel;
• determining a total asymmetry based on a first asymmetry of the first communication channel and a second asymmetry of the second communication channel;
• comparing the total asymmetry to one or more threshold relationships between operating currents and restraining currents of the electrical line, each of the one or more threshold relationships comprising a slope;
• and
• performing a control function based on the comparison.

A non-transitory computer-readable medium comprising computer-executable instructions that, when executed, are configured to cause data processing circuitry to perform operations comprising:

• receiving, at a first intelligent electronic device (IED), a local current measurement of a local current and a local voltage measurement of a local voltage along an electrical line;
• transmitting a first signal indicative of the local current measurement and the local voltage measurement to a second intelligent electronic device (IED) of an electric power delivery system via a first communication channel;
• receiving a second signal indicative of a remote current measurement and a remote voltage measurement from the second intelligent electronic device (IED) via the first communication channel;
• determining a first asymmetry of the first communication channel;
• determining a total asymmetry based on at least the first asymmetry of the first communication channel;
• comparing the total asymmetry to one or more threshold relationships between operating currents and restraining currents of the electrical line, each of the one or more threshold relationships comprising a slope;
• and
• performing a control function based on the comparison.