Wide Area Input Stabilizer for Damping of Power System Inter-Area Oscillation

2013 ◽  
Vol 479-480 ◽  
pp. 530-534
Author(s):  
Van Dien Doan ◽  
Ta Hsiu Tseng ◽  
Pei Hwa Huang
Keyword(s):  
Power System ◽  
System Stability ◽  
Measurement Unit ◽  
Small Signal Stability ◽  
Signal Stability ◽  
Power Oscillations ◽  
Study Results ◽  
System Stabilizer ◽  
Small Signal Stability Analysis ◽  
Remote Feedback

The main objective of this paper is to report the small signal stability analysis of Vietnam Power System which has a longitudinal network structure with the consideration of power system stabilizer (PSS) in operation to enhance the damping of inter-area oscillation by using local as well as remote feedback signals via phasor measurement unit (PMU). Both methods of frequency domain and time domain analyses are used to investigate the performance of the power system. The study results show that by proper selection of PSS installation locations and remote feedback signals, power oscillations on the tie-line will be reduced and the system stability is thus improved.

Small Signal Stability Analysis Based on Multi-Band Parallel Technology in Henan Power Grid

2013 ◽  
Vol 441 ◽  
pp. 258-262
Author(s):  
Lin Lin Yu ◽  
Yu Fei Rao ◽  
Shi Qian Wang
Keyword(s):  
Stability Analysis ◽  
Power System ◽  
Power Grid ◽  
System Stability ◽  
Small Signal ◽  
Small Signal Stability ◽  
Work Efficiency ◽  
Signal Stability ◽  
Small Signal Stability Analysis ◽  
Multi Band

With the rapid growth in the size of Henan grid, in the context of UHV networking, Henan power grid operation is facing a more complex mechanism and operating characteristics. Risks affecting the security and stability will be more subtle. There are more and more problems in frequency oscillation. The power system has much more generators and dimension after interconnection. Small signal stability analyzing eigenvalue complex and longer, which greatly reduces the work efficiency. This paper which based on Henan power system stability diagnostic platform developed technology based on multi-band parallel algorithm for small signal stability analysis. The analysis of the small signal stability eigenvalue calculation is assigned to a different platform computing nodes simultaneously. Then this method is applied to Henan grid in the year of 2012. The results show that the small signal stability algorithm which based on the multi-band can ensure the correctness of calculations. Simultaneously, calculation time is greatly reduced and the work efficiency is improved. The practice has a strong role in the promotion.

scholarly journals Small Signal Stability Analysis of Multi-Area Power System

2020 ◽  
Vol 9 (4) ◽  
pp. 1850-1855
Keyword(s):  
Fuzzy Logic ◽  
Steady State ◽  
Stability Analysis ◽  
Power System ◽  
System Stability ◽  
Small Signal ◽  
Small Signal Stability ◽  
Interconnected Power System ◽  
Signal Stability ◽  
Small Signal Stability Analysis

This paper focuses on methodologies for calculation and examination of oscillatory security of interconnected power system network against constant disturbances. For instance, voltage soundness, transient dependability and oscillatory behaviors are also the measure of power system stability, which must be evaluated. For that proposed strategies based on proportional integral and fuzzy logic controlling techniques are implemented. The integral controller-based technique provides the zero steady-state error and with adequate damping, time to reach steady state can be reduced, on the cost of oscillation in frequency and tie-line power. On the contrary, fuzzy logic has demonstrated that strategies of computational intelligence can alleviate the quick appraisal of oscillatory solidness with less time to reach steady state. Furthermore, Eigenvalues are constructed for small signal stability analysis, utilizing a parallel variation of Arnoldi technique, reducing the time essential for calculation of vast Multi-Area power frameworks. For exhibit purposes, models have been composed utilizing MATLAB/SIMULINK and with the assistance of the fuzzy logic.

scholarly journals Optimal design of controllers for power network connected SOFC using of multi-objective PSO

2018 ◽  
Vol 15 (2) ◽  
pp. 145-163 ◽  
Author(s):  
Amin Safari ◽  
Hossein Shahsavari ◽  
Farshad Babaei
Keyword(s):  
Damping Ratio ◽  
Damping Factor ◽  
Small Signal ◽  
Small Signal Stability ◽  
Machine System ◽  
Multi Objective ◽  
Signal Stability ◽  
Power Oscillations ◽  
System Stabilizer ◽  
Small Signal Modeling

In this paper, we study the concept and forming manner of Solid Oxide Fuel Cell (SOFC) into the electrical system and then, its effect on small signal stability is investigated. The paper illustrates the essential module, mathematical analysis and small signal modeling of the SOFC joined to single machine system. The aim of this study is to reduce power oscillations in the presence of the SOFC with optimal stabilizer. The multi-objective Particle Swarm Optimization (MOPSO) technique has been used for designing a Power System Stabilizer (PSS) in order to improve the performance of the system. Two objective functions are regarded for the design of PSS parameters in order to maximize the damping factor and the damping ratio of the system. To evaluate the efficiency of the proposed optimal stabilizers, four scenarios are considered and then, its results have been analyzed. The proposed PSS tuning technique can be applied to a multi-machine system connected to the SOFC. The efficiency of MOPSO based proposed PSS on the oscillations the system related to SOFC is illustrated by time-domain simulation and also, the comparison of the MOPSO based proposed PSS with the PSS based-single objective method has been prepared.

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