Principle of time-invariant loss-less resistor and its application in electric power system

A new circuit element- time-invariant loss-less resistor is introduced in this paper. This resistor is composed of superconductor, electrical switch and its exchange circuit. Because this resistor is a “one-port” element and its value is single it can absolutely supersede conventional resistor so as to save energy and limit current and improve the performance of the circuit.