An Optimal PMU Placement Method for Disturbance Source Location of Forced Oscillation at Load Side

Abstract

This paper proposes a method for optimal placement of phasor measurement units (PMUs) to locate disturbance source of forced power oscillation at load side. Considering that the geographical wiring diagram is difficult to be digitally analyzed, the network topology of the geographical wiring diagram is established to get digital network information in the method. A network connectivity algorithm is used to generate incidence matrixes. Moreover, the process of topology identification and a dichotomous logic tree is used to determine whether the substation needs to be equipped with a PMU. All the impact loads in the system can be monitored after installing all the PMUs required. The effectiveness of the proposed method is verified via an example of a small-scale power system.