scholarly journals IMPROVING POWER SYSTEM STABILITY USING REAL-CODED GENETIC ALGORITHM BASED PI CONTROLLER FOR STATCOM

2013 ◽  
pp. 121-126
Author(s):  
SANGRAM KESHORI MOHAPATRA ◽  
KUMARESH ROUT
Keyword(s):  
Power System ◽  
Optimization Problem ◽  
Power System Stability ◽  
Pi Controller ◽  
Operating Conditions ◽  
System Stability ◽  
Static Synchronous Compensator ◽  
Real Coded Genetic Algorithm ◽  
Simulation Results ◽  
Single Machine Infinite Bus

In this paper investigates the power-system stability improvement by a static synchronous compensator (STATCOM) based damping controller. The present study is considered both local and remote signals. The design problem of the proposed controller is formulated as an optimization problem, and Real-Coded Genetic (RCGA) algorithm is employed to search for the optimal controller parameters. The performances of the proposed controllers are evaluated under different disturbances and loading conditions for single-machine infinite bus power system. The performance of the proposed controllers has been investigated. Simulation results are presented under various operating conditions and disturbances to show the effectiveness and robustness of the proposed approach

scholarly journals Optimal Location and Design of TCSC controller For Improvement of Stability

2011 ◽  
pp. 210-215
Author(s):  
Swathi Kommamuri ◽  
P. Sureshbabu
Keyword(s):  
Power System ◽  
Optimization Problem ◽  
Low Frequency ◽  
System Stability ◽  
Simulation Environment ◽  
Swarm Optimization ◽  
Stability Performance ◽  
Low Frequency Oscillations ◽  
Simulation Results ◽  
The Stability

Power system stability improvement by a coordinate Design ofThyristor Controlled Series Compensator (TCSC) controller is addressed in this paper.Particle Swarm Optimization (PSO) technique is employed for optimization of the parameterconstrained nonlinear optimization problem implemented in a simulation environment. The proposed controllers are tested on a weakly connected power system. The non-linear simulation results are presented. The eigenvalue analysis and simulation results show the effectiveness and robustness of proposed controllers to improve the stability performance of power system by efficient damping of low frequency oscillations under various disturbances.

Frequency Response as Tuning of Power System Stabilizer on Rotor Speed Dynamic Stability

2015 ◽  
Vol 793 ◽  
pp. 110-113
Author(s):  
Muhamad Irwanto ◽  
Murina ◽  
N. Gomesh ◽  
N. Gomesh ◽  
M.R. Mamat ◽  
...  
Keyword(s):  
Power System ◽  
Dynamic System ◽  
Frequency Response ◽  
Power System Stability ◽  
Electric Power System ◽  
Operating Conditions ◽  
System Stability ◽  
Background Information ◽  
Rotor Speed ◽  
System Stabilizer

Power system stability is the ability of an electric power system unit, for giving operating conditions beginning to recover operating state of equilibrium after being subjected to a physical interference. Power system stability has been recognized as an important problem for safe operation of system unit. Stability of power system is similar to the stability of any dynamic system, and has basic mathematical. Concepts from the mathematics and theoretical stability control are first revised to provide background information related to stability of dynamic system generally and establish a connection theoretical. This paper presents to improve of dynamic power system stability using frequency response as tuning of system stabilizer. It is started by electrical power systems mathematic modeling in state variable equation then set the expertise function of frequency response as tuning of system stabilizer. The plant controlled by function of frequency response is tuned to left half plane (LHP) as system stabilizer which their input from the rotor speed. When the system occur fault, the rotor speed should be synchronized, for this case one electrical controller is needed to make sure the system is stable.

Decentralized Robust Coordinated Controller of Excitation and Valve for Improvement of Power System Stability

2014 ◽  
Vol 668-669 ◽  
pp. 462-465
Author(s):  
Zhi Min Li ◽  
Xin Yang Deng ◽  
Xiao Ming Mou ◽  
Shuang Rong ◽  
Tian Kui Sun ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Control Systems ◽  
Coordinated Control ◽  
Power System Stability ◽  
System Stability ◽  
Control Scheme ◽  
Terminal Voltage ◽  
Simulation Results ◽  
Generator Terminal

A novel robust control scheme for decentralized generator excitation and valve coordinated control systems to improve power system stability is proposed. By utilizing generator terminal voltage magnitude and phase angle to represent the interactions among generators, decentralized generator excitation and valve coordinated control in multi-machine power systems is achieved. The control is realized by robust parametric approach. Simulation results show that the proposed robust parametric coordinated control can improve power system stability.

Gird Lagrange Stability Analysis Based on Quasi Periodic Analysis

2013 ◽  
Vol 336-338 ◽  
pp. 570-574
Author(s):  
Li Fang Lu ◽  
Huan Qi ◽  
Xun Cheng Huang
Keyword(s):  
Power System ◽  
Power System Stability ◽  
Ensemble Empirical Mode Decomposition ◽  
Stability Study ◽  
System Stability ◽  
Trajectory Data ◽  
Lagrange Stability ◽  
Mode Decomposition ◽  
Periodic Analysis ◽  
Simulation Results

The Lagrange stability is a new concept in power system stability study. In this paper, an effective method based on quasi-periodic analysis has be presented to analyze the power system Lagrange stability. The Ensemble Empirical Mode Decomposition (EEMD) has be introduced to deal with the trajectory data of power system in the proposed approach. With the EEMD decomposition and linear transformation of the trajectory data, a special constantAcan be accepted. IfAequal to zero, the power system is Lagrange stable, otherwise the power system is not Lagrange stable. The simulation results show the correctness of the method.

scholarly journals Design of POD controller using linear quadratic regulator tecniques for SMIB power system stability enhancement installed with UPFC

2019 ◽  
Vol 8 (3) ◽  
pp. 164
Author(s):  
Brijesh Kumar Dubey ◽  
N. K. Singh
Keyword(s):  
Power System ◽  
Low Frequency ◽  
Linear Quadratic Regulator ◽  
Power System Stability ◽  
Operating Conditions ◽  
System Stability ◽  
Linear Quadratic ◽  
Study Results ◽  
Power Oscillation Damping ◽  
Matlab Programming

In the field of the power system stability, this paper presents the current research status and developments. This paper presents a systematic approach for designing Power Oscillation Damping Controller (POD) based Linear Quadratic Regulator Techniques for SMIB power system stability installed with UPFC to damp out low frequency oscillations in a power system. The impacts of control strategy on power system single machine infinite bus installed with UPFC, without UPFC and with UPFC and POD controller at different operating conditions are discussed. The accuracy of the developed models is verified through comparing the study results with those obtained from detailed MATLAB programming.

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