TRANSIENT BASED METHOD FOR IDENTIFYING FAULTS IN A HIGH / MEDIUM VOLTAGE ELECTRIC POWER TRANSMISSION SYSTEM, RELATED FAULT IDENTIFICATION MODULE AND HIGH / MEDIUM VOLTAGE ELECTRIC POWER TRANSMISSION AND / OR DISTRIBUTION SYSTEM EQUIPPED WITH SUCH FAULT IDENTIFICATION MODULE

摘要

The invention relates to a transient based method for identifying faults in an electric power transmission and/ or distribution system (100) having at least one current transmission line (L ₁₂, L ₁₃, L ₂₃ ) comprising the following steps : - generation of a physical model of the at least one current transmission line (L ₁₂, L ₁₃, L ₂₃ ), the physical model depending on the fault parameters and describing the behavior of voltage and/or current transients due to the fault in the at least one current transmission line, fault parameters comprising a fault location parameter on said current transmission line (L ₁₂, L ₁₃, L ₂₃ ) and a fault impedance parameter, - measurement of voltage and/or currents evolution at least at one specific location in the said power system (100), - iterative simulation of the voltage and/or current evolution by the physical model at the measurement point with a set of fault parameters where at each step of iteration, simulated and measured voltage and/or current evolutions are compared and the set of fault parameters is adapted according to a convergence criterion, - identification of a fault with its fault parameters when convergence of the measured voltage and/or current evolutions and simulated voltage and/or current evolutions is reached in a limited number of iterations.