Agnihotri Piyush; International Journal of Advance Research, Ideas and Innovations in Technology.
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(Volume3, Issue1)
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Stabilization Of Power System Using Artificial Intelligence
Based System
Piyush Agnihotri
Department of Electrical & Electronics
Engineering
Pranveer Singh Institute of Technology,
Kanpur, INDIA
piyushagnihotri034@gmail.com
Jitendra Kumar Dwivedi
Department of Electrical Engineering
Harcourt Butler Technical University
Kanpur, INDIA
jkdwivedi.hbti@gmail.com
Vishnu Mohan Mishra
Department of Electrical Engineering
GB Pant Engineering College,
Pauri-Garhwal
vmm66@rediffmail.com
Abstract— This paper reviews limitations of traditional control system and modern control system controllers, which are
overcome to some extent using artificial intelligent techniques, such as ANN, Fuzzy Logic, Expert System, Particle Swarm
Optimization, Genetic Algorithm, etc. The review shows that efforts are made towards Power System Stabilizer based on
Artificial Intelligent Techniques, which will give positive impact on the system stabilities and improve system performances.
Keywords—ANN; PSO; Fuzzy Logic; Genetic Algorithm.
I. INTRODUCTION
Power system engineering forms a vast and major portion of electrical engineering studies. It is mainly concerned with the
production of electrical power and its transmission from the sending end to the receiving end as per consumer requirements,
incurring minimum amount of losses. The power at the consumer end is often subjected to changes due to the variation of load or
due to disturbances induced within the length of transmission line. For this reason the term power system stability is of utmost
importance in this field, and is used to define the ability of the of the system to bring back its operation to steady state condition
within minimum possible time after having undergone some sort of transience or disturbance in the line. Ever since the 20th
century, till the recent times all major power generating stations over the globe has mainly relied on AC distribution system as the
most effective and economical option for the transmission of electrical power.
The Automatic Voltage Regulator (AVR) and exciter are the main components of the generator excitation system. The
terminal generator voltage sensed and compared with the reference voltage to control the exciter output. Subsequent to any
disturbance the damper and the field winding attempt to damp rotor swing. The damping process repels by the negative damping
torques introduced by AVR.
As a result, the power system may expose undesirable oscillations or lose synchronism. For this concern, the Power
System Stabilizer (PSS) become technologically advanced and expanded to serve for an effective functioning. The main function
of the PSS in the excitation system is introducing an additional signal to provide a damping component that is in the phase with
the rotor speed deviation. Therefore, the System Stability will be enhanced by adding PSS device.
Stabilizers that developed according to classical and modern control theories are based on liberalized machine model.
Power system is a nonlinear, complex system and is subjected to different kinds of disturbances that yield unresolved issues and
uncertain consequences in different power system problems. With such limitations, it is difficult
to stabilize power system efficiency by these kinds of PSSs. Therefore, other types of modern control techniques like adaptive
controller and H
∞
control system were used to achieve better operating performance as distinguished from conventional
stabilizers.
Artificial Intelligence (AI) techniques proved to be effective tools to resolve many power system problems and those they
could be more effective when properly joined together with conventional mathematical approaches were proposed based on these
AI techniques. In this work, a serious attempt is made to present a comprehensive analysis of artificial intelligent techniques for
designing PSS, which are proposed by researchers recently. The performance of a variety of controllers is demonstrated and
compared with other types of controllers.