A Phasor Measurement Unit Based State Estimation in Classic HVDC Links Using Weighted Least Square Algorithm

Power system networks are becoming more interconnected and complicated. Therefore, the control centers feel the necessity of robust and scalable methods for power system state estimation that maintain performance suitably for large-scale systems. Utilities recently have been operating with less amount of money invested in transmission infrastructure and enhanced economic pressure contributing towards occurrence of blackouts. So blackout is avoided by the exact state of power system is required in order to take efficient corrective and preventive action. State estimation help in getting a good picture of system state. State estimation is a methodology that provides the best possible approximation for the state of a system by processing the available information therefore it can provide a real time data for many of the central control and dispatch functions in a power system. This paper presents a Phasor Measurement Unit (PMU) based state estimation in classic HVDC link using Weighted Least Square (WLS) algorithm. The algorithm and simulation are renowned with MATLAB software.