Optimising PMU Placement using Integer Linear Programming for Complete Network Observability with Zero Injection Bus and N-1 Contingency

The Phasor Measurement Unit PMU is a fast monitoring device that deals with the time-stamped phasors, current, and voltage values. The high device and installation cost of PMUs inspire optimal placement of PMUs in the power network. An integer linear programming algorithm finds an optimal solution to ensure complete network observability. The concept of Zero Injection Buses (ZIB) is included to obtain better results. For the reliability of the power network, the N – 1 contingency of the PMU device is also solved. The suggested technique is implemented on 39 New England bus networks, IEEE 14, 30, 57, and 118 bus systems.