Electric power system transducer failure monitor and measurement recovery

A system for electric power system protection, comprising:

• a plurality of protection relays, each protection relay to receive electric power system signals from at least one instrument transformer of a plurality of instrument transformers in communication with equipment of an electric power system and to provide protection to the electric power delivery system using the electric power system signals;
• and
• an integrator in communication with the plurality of protection relays, the integrator comprising:
• a topology subsystem to determine topology of the electric power system;
• a communication interface subsystem to receive digitized analog signals from the plurality of protection relays;
• a communication switch to route substitute digitized analog signals from a first protection relay to a second protection relay of the plurality of protection relays upon receipt of an indication of unavailability of one or more of the electric power system signals to the second protection relay;
• and
• a processing device to determine a value of the substitute digitized analog signals from a known relationship of at least a portion of the topology of the electric power system.

A method for electric power system protection, comprising:

• providing digitized power system signals from the electric power system to a receiving device;
• determining a deficiency in at least one digitized electric power signal of the digitized electric power system signals with the receiving device;
• when the deficiency in the at least one digitized electric power signal is determined:
• calculating at least one substitute digitized electric power signal based a known topology of at least a portion of the electric power system using at least some of the digitized electric power system signals;
• providing the value of the at least one substitute digitized electric power signal of the digitized electric power system signals to a protection device of the electric power system receiving device;
• and
• determining if a protective action by the protection device of the electric power system is warranted based on at least one substitute digitized electric power signal.

A method for electric power system protection, comprising:

• obtaining first power system signals from a first electric power system equipment with a first protection relay;
• providing a protection action with the first protection relay using the first power system signals;
• obtaining second power system signals from a second electric power system equipment with a second protection relay;
• transmitting digitized analog signals representative of electric power system signals of the second electric power system equipment from the second protection relay to an integrator;
• upon the first power system signals becoming unavailable to the first protection relay, the first protection relay transmitting an indication of unavailability to the integrator;
• receiving the indication of unavailability with the integrator;
• verifying that the second power system signals may be substituted for the first power system signals with the integrator;
• calculating a value of at least one of the second power system signals based a known topology of at least one of the first electric power system equipment or the second electric power system equipment;
• sending the second power system signals to the first protection relay as substitute power system signals;
• receiving the second power system signals with the first protection relay;
• and
• providing another protection action with the first protection relay using the substitute power system signals.