  This paper discusses a novel fault location approach using single ended
measurement. The natural dissipation of the circuit parameters are considered
for fault location. A relationship between the damped natural frequency of
oscillation of the transmission line current and fault location is established
in this paper. The hybrid dc circuit breaker (dcCB) interrupts the fault
current and the line current attenuates under the absence of any driving
voltage source. The line capacitance discharges into the fault at a specific
frequency of oscillation and rate of attenuation. Utilizing this information,
the fault location in a multi-terminal direct current (MTdc) network can be
predicted. A three terminal radial model of a MTdc is used for performance
evaluation of the proposed method using Power System Computer Aided Design
(PSCAD)/Electromagnetic Transients including dc (EMTdc).
