Optimal Placement of PMU for Complete Observability of Power System Considering Zero Injection and Islanding Condition

Abstract

In Smart Grid, Phasor Measurement Unit (PMU) is the most significant tool which provides voltage and current phasor that are synchronized in absolute time reference using global positioning system commonly known as Synchrophasor. This paper presents the methodology for Optimal Placement of Phasor measurement unit (OPP) using Binary Linear Integer Programming (BLIP) with binary decision variables (0, 1) for minimizing the cost of installation to provide complete observability of the power system under normal and islanding condition. The optimal placement is attained by ranking the solutions using redundancy of the system. In this paper, the placement of PMU is realized with several cases namely conventional flow measurement, with zero injection and without zero injection. The best optimal location is one, a bus with maximum BOI, SORI and redundancy index. The feasibility and effectiveness of propounded method is tested in IEEE 7, 9, 14 and 30 bus system using Matlab R2018 software. The results obtained have shown, the proffered method of PMU placement is fast and more accurate with excellent computational efficiency.