PRACTICAL EVALUATION AND TESTING OF THE HARMONIC POWER FLOW STUDY PROGRAM.

Recently, a digital computer program for the calculation of the propagation of harmonics in electric power systems has been developed at Purdue University. These harmonic voltages and currents arise from rectifiers and inverters (in HVDC transmission systems and industrial applications), fluorescent lighting loads, and other nonlinear loads. The motivation for the work included avoidance of resonant conditions in shunt capacitor applications, reduction of interference with communications circuits, reduction of losses, and amelioration of a variety of potentially undesirable effects due to high harmonic signal levels. The software has been brought to the point where practical evaluation and testing is appropriate. This paper describes the planned efforts of Minnesota Power and Purdue University under work sponsored by the Electric Power Research Institute to effect this evaluation and testing.