Control techniques for power system stabilisation

Dora, Gouri Shankar and Madhulita, Monali (2013) Control techniques for power system stabilisation. BTech thesis.



The conventional PSS was first proposed earlier based on a linear model of the power system to damp the low frequency oscillations in the system. But they are designed to be operated under fixed parameters derived from the system linearized model. Due to large interconnection of power system to meet the load demand brings in deviations of steady-state and non-linearity to power system. The main problem is that PSS includes the locally measured quantities only neglecting the effect of nearby generators. This is the reason for the advent of Wide area monitoring for strong coupling between the local modes and the inter-area modes which would make the tuning of local PSSs for damping all modes nearly impossible when there is no supervisory level controller. Wide area control addresses these problems by proposing smart topology changes and control actions. Dynamic islanding and fast load shedding are schemes available to maintain as much as possible healthy transmission system. It is found that if remote signals from one or more distant locations of the power system can be applied to local controller design, system dynamic performance can be enhanced. In order to attain these goals, it is desirable to systematically build a robust wide area controller model within an autonomous system framework.

Item Type:Thesis (BTech)
Uncontrolled Keywords:automatic voltage regulator; excitation system; phasor measurement units; power system stabilizer; wide area monitoring system.
Subjects:Engineering and Technology > Electrical Engineering > Power Systems
Engineering and Technology > Electrical Engineering > Power Networks
Divisions: Engineering and Technology > Department of Electrical Engineering
ID Code:4776
Deposited By:Hemanta Biswal
Deposited On:31 Oct 2013 15:30
Last Modified:20 Dec 2013 11:00
Supervisor(s):Subudhi, B

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