This article presents an algorithm for auto-reclosing of shunt compensated transmission lines. The algorithm uses signal analysis methods to estimate the future voltage shape over the circuit-breaker. Based on this voltage shape switching instants are estimated in the zero crossings. The minimization of the probability of a prearcing is reduced be adding time shift parameters. These parameters take the limited rise of strength recovery of the circuit breaker and the mutual influence of the coupling of the poles by a three-pole auto-reclosing into consideration. The advantage of the descript method is significant reduction of the switching overvoltage.

This paper presents a controlled auto-reclosing technique for compensated transmission lines, which uses the Prony Method to determine the future voltage shape over the circuit-breaker. It is illus- trated that the zero crossing of the voltage over the circuit-breaker, which is conventional used as optimal switching instant, is not sufficient to get the smallest transient overvoltages at the end of the transmission line. A new additional criterion is defined, which considers the influence of the reso- nance circuit of the compensated transmission line.