UPFC Based Damping And Fuzzy Controllers For Damping Of Low Frequency Oscillations In A Single Machine Infinite Bus System

2010 ◽  
Vol 3 (3) ◽  
pp. 53-61
Author(s):  
Prema Kumar Navuri ◽  
◽  
Kovvuru.G.V.S. Bangarraju ◽  
K.Mercy Rosalina ◽  
◽  
...  
Keyword(s):  
Single Machine ◽  
Low Frequency ◽  
Fuzzy Controllers ◽  
Low Frequency Oscillations ◽  
Single Machine Infinite Bus ◽  
Bus System

Application of a neuro-fuzzy controller for single machine infinite bus power system to damp low-frequency oscillations

2021 ◽  
pp. 014233122110427
Author(s):  
Aliyu Sabo ◽  
Noor Izzri Abdul Wahab ◽  
Mohammad Lutfi Othman ◽  
Mai Zurwatul Ahlam Mohd Jaffar ◽  
Hamzeh Beiranvand ◽  
...  
Keyword(s):  
Power System ◽  
Parameter Optimization ◽  
Single Machine ◽  
Fuzzy Controller ◽  
Low Frequency ◽  
Test System ◽  
Low Frequency Oscillations ◽  
Neuro Fuzzy ◽  
Single Machine Infinite Bus ◽  
Damping Controller

Generally, power systems experience a variety of disturbances that can result in low frequency electromechanical oscillations. These low frequency oscillations (LFOs) take place among the rotors of synchronous generators connected to the power system. These oscillations may sustain and grow to cause system separation if no adequate damping is provided. Power system stabilizers (PSSs) are one of the alternative devices used to solve this rotor oscillation problem. The major limitation of using PSSs at the excitation system of synchronous machine is that the conventional PSS is a permanent parameter type operating under a particular system operating condition, and its parameters are acquired through trial and error. An efficient way of operating the PSS has been by designing the PSS parameters using a powerful optimization procedure. However, designing PSS damping controller is a cumbersome task as it needs a comprehensive test system modeling and a heavy computational burden on the system. In this research, a novel, model-free neuro-fuzzy controller (NFC) is designed as the LFOs’ damping controller to substitute the traditional PSS system making the power system simple without complications in PSS design and parameter optimization. The proposed controller application implements the LFOs’ control without a linearized mathematical model of the system, as such it makes the system less complex and bulky. Single machine infinite bus (SMIB) test system was simulated in SIMULINK domain with the PSSs and with the proposed controller to compare the NFC effectiveness. The simulation outcome for the eigenvalue study with NFC stabilizer yields steady eigenvalues that enhanced the damping status of the system greater than 0.1 with decreased overshoots and time to rise via the proposed NFC process than with the conventional FFA-PSS. Similarly, the generator transient reaction also presents the ω and δ based on the time to settle was improved by 64.66% and 28.78%, respectively, via the proposed NFC process than with the conventional FFA-PSS. Finally, the conventional PSS was found to be complicated in its design, parameter optimization and less effective than the proposed controller for the LFOs’ control.

Real-Coded Genetic Algorithm for Robust Design of UPFC Supplementary Damping Controller

2012 ◽  
pp. 283-288
Author(s):  
S. C. Swain ◽  
S. Mohapatra ◽  
S. Panda ◽  
S. R. Nayak
Keyword(s):  
Genetic Algorithm ◽  
Phase Angle ◽  
Single Machine ◽  
Low Frequency ◽  
Low Frequency Oscillations ◽  
Damping Controllers ◽  
Real Coded Genetic Algorithm ◽  
Simulation Results ◽  
Single Machine Infinite Bus ◽  
Damping Controller

In this paper RCGA is used in Designing UPFC based supplementary damping controllers for damping low frequency oscillations in a single machine infinite bus power system. The detail investigations have been carried out considering the four alternatives UPFC based damping controller namely modulating index of series inverter (MB),modulating index of shunt inverter (ME),phase angle of series inverter (∂B) & phase angle of shunt inverter (∂E).RCGA is employed to optimize damping controller parameters. Simulation results are presented & compared with a conventional method of tuning the damping controller parameters to show effective of the proposed design approach.

scholarly journals Design of Robust Control for Single Machine Infinite Bus System

2015 ◽  
Vol 19 ◽  
pp. 657-664 ◽  
Author(s):  
Mircea Dulau ◽  
Dorin Bica
Keyword(s):  
Robust Control ◽  
Single Machine ◽  
Single Machine Infinite Bus ◽  
Bus System

Robust control of single-machine infinite bus system: a novel approach

Sadhana ◽  
2020 ◽  
Vol 45 (1) ◽  
Author(s):  
Chaity Sarkar ◽  
Swaraj Banerjee
Keyword(s):  
Robust Control ◽  
Single Machine ◽  
System A ◽  
Novel Approach ◽  
Single Machine Infinite Bus ◽  
Bus System
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