An optimal PMU placement method considering bus weight and voltage stability

In order to further improve the accuracy and efficiency of PMU optimizing methods, a new method considering both bus weight and voltage stability is presented in this paper. The method calculates every bus´s weight value at first, related to the importance of the bus in the network, and then places PMU at the bus with maximum weight value until the system is completely observable. Proposed method is further extended for assuring complete observability considering voltage stability obtained by voltage stability analysis. Simulation results for IEEE14-bus system with proposed method are prepared with those with existing techniques. Results show that the proposed method is not only more efficient and accurate, but also beneficial to improving stability of power monitoring system.