POWER SYSTEM STATE ESTIMATION

This project proposes a method of state estimation using the Weight Least Squares,
tested on three bus systems. It gives an overview of state estimation and finds the best
power system network parameters, in terms of voltage, real and reactive power
injections, and real and reactive power flow and phase angle by estimating the state
variables, so that the security of the power system is maintained. This project
provides coding and results of power system state estimation, of test bus system using
the MATLAB programme. The result, obtained in the 2- Bus System show that the
networks have bad data measurements, while no bad data measured in 3 -Bus System
and IEEE 14 -Bus System. The bad data have to be eliminated to get new and precise
estimated state variable value. Deduction of bad data means reducing the error in
network. In conclusion, minimizing the errors in State Estimation using the proposed
method is achieved and the final power system network parameters are obtained.