Systems and methods to improve distance protection in transmission lines

A system comprising:

• at least one processor;
• and
• at least one memory storing computer-executable instructions, that when executed by the at least one processor, cause the at least one processor to:
• receive one or more current and voltage inputs;
• determine, based on the one or more current and voltage inputs, one or more sets of current and voltage phasors, wherein the one or more current and voltage phasors are determined using a short window phasor estimation with different window lengths;
• determine, within a single power cycle and based on the one or more current and voltage phasors, wherein the set of voltage phasors are used to adapt to a particular type of voltage transformer and to a different time after a fault occurs, a fault in a transmission line;
• send, to a distance protection element and based on the determination that the fault exists, a signal to clear the fault in the transmission line;
• and
• clear the fault in the transmission line.

A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:

• receiving one or more current and voltage inputs;
• determining, based on the one or more current and voltage inputs, one or more sets of current and voltage phasors, wherein the one or more sets of current and voltage phasors are determined using a short window phasor estimation with different window lengths;
• determining, within a single power cycle and based on the one or more sets of current and voltage phasors, wherein the one or more sets of voltage phasors are used to adap to a particular type of voltage transformer and a different after a fault occurs, a fault in a transmission line;
• sending, to a distance protection element and based on the determination that the fault exists, a signal to clear the fault in the transmission line;
• and
• clear the fault in the transmission line.