Allocation of Phasor Measurement Unit using A-star method in connected power network

This paper explores an A-star based approach for optimal Phasor Measurement Unit (PMU) placement (OPP) which is beneficial for achieving full observability of the connected power network under usual operating environments. The main aim of the proposed approach is to lessen the number of PMU at the connected power network buses, which in turn reduce the setup cost of the PMU. The proposed approach is tested on conventional IEEE 14-bus, 30-bus, New England 39-bus, 57-bus, Indian Utility 62-bus, and 118-bus system. The results obtained with the proposed approach have been compared with the existing methods. It is observed that the proposed approach is able to achieve the full observability of the connected power network with minimum number of PMU.