Load Flow Analysis of Grid Disturbance using Newton Raphson Iterative Method on Hypothetical Three Bus System

Abstract

The blackout of power system in India in 2012 has indicated that the operation and control of power
systems may need to be improved. Even if a lot of data was available, the operators at different control centers did not
take the proper actions in time to prevent the blackout. This depends partly on the reorganization of the control centers
after the deregulation and partly on the lack of reliable decision support systems when the system is close to instability.
Today a large problem for system operators is to identify critical states since there are thousands of parameters which
describe and affect the state. Motivated by these facts, in this dissertation, we have consider a hypothetical three bus
system and by using Newton –Raphson iterative method we have compare variation in voltage magnitude(V) and bus
voltage angle(δ). Due to which, there is significant changes in both active and reactive power (more specifically reactive
power).We have verified our results by using MATLAB Program for power flow studies using Newton –Raphson Method.
This Paper concludes that FACTS is a technology which provides a methodology for the utilities to effectively utilize
their assets, enhance transmission capability by loading lines to their full transmission capability, and therefore,
minimize the gap between the stability and the thermal limits, and improve grid reliability.