Stability Improvement of Single Machine using ANFIS-PSS Based on Feedback-linearization
Abstract: Electrical power
system (EPS) operation always follows load changes which occur within time. Load
changes and disturbances cause EPS operation to find a new balance point and
before can reach the new balance point, the rotor speed will swing around its
synchronous speed. This phenomenon causes the stability of the EPS operation
decrease significantly, moreover, when the disturbance is large the machine
tend to become unstable. To overcome this problem, it is necessary to add a
power system stabilizer (PSS). This research proposes ANFIS-PSS based on
feedback-linearization to stabilize the EPS operation. Feedback-linearization
is a nonlinear control technique which feedback and limits several outputs in
order to make the nonlinear system acts as a linear system. Data from
conventional PSS is used to train and to update ANFIS-PSS parameters.
Simulation results show an improvement of the stability of single machine model
such as decreasing in maximum magnitude of rotor speedat the value of 0.466
rad/s and to reduce the time settling to 5.6 s.
Author: I Made Ginarsa, Osea
Zebua
Journal Code: jptkomputergg140061
