Elimination of higher harmonics of voltage in the power systems supplying the rectifier circuits

The paper presents the results of simulation of the power network composed of the main supplying point (PCC) of 15kV, 4km overhead supply line of middle voltage, filter of k(th) harmonics and 6- and 12-pulse rectifier. In each case we have determined the impedance characteristics of the network as the function of frequency in steady state of AC analysis. The values of the voltage harmonics corresponding to the circuit before and after filter of kth harmonic have been also calculated. The supplying line was simulated by a two-port of the distributed parameters. The numerical data used in experiments have been acquired from the real (physical) power system. All experiments have been performed using Micro-Cap 8 program. In the paper we have included the exemplary results of the numerical calculations..