Inclusion of Phasor Measurement Units in Least Measurement Rejected State Estimator

State Estimation is the backbone of a modern electric power system and is employed by most of the Energy Management Systems (EMS) in the world to ensure the real-time monitoring and secure operation of the power system. Phasor Measurement Units (PMUs) are very popular metering equipment in the modern power industry because of its high accuracy and faster refresh rate of measurements. PMUs incorporated with conventional Supervisory control and data acquisition (SCADA) meters can improve the performance of the state estimation. In this paper, phasor measurements (voltage and current phasors) have been modeled into existing Least Measurement Rejected (LMR) estimator to simulate the incorporation of PMU meters. Our work also investigates the importance of locating PMUs at different buses in order to improve the accuracy of state estimation. The performance of proposed approach is investigated in terms of accuracy and computational efficiency in the presence of different bad-data scenarios at IEEE 30 and IEEE 118 bus systems.