Analysis of the Principle and Suppressed Measures of Low Frequency Oscillation in Interconnected Power System

2012 ◽  
Vol 241-244 ◽  
pp. 676-681 ◽  
Author(s):  
Qiu Li Wu ◽  
Xi Cheng ◽  
Jian Cheng Tan
Keyword(s):  
Power System ◽  
Future Development ◽  
Low Frequency ◽  
Power System Stability ◽  
System Stability ◽  
Interconnected Systems ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Interconnected Power System ◽  
The Future

In interconnected systems, the low frequency oscillation becomes an important factor that affects the power system stability and limits power transport. This paper analyses the principle of low frequency oscillation in power system and the measures on suppressed low frequency oscillation, at last discusses the future development.

scholarly journals Low-Frequency Oscillation in Power System

2020 ◽  
Vol 9 (3S2) ◽  
pp. 5-9
Keyword(s):  
Signal Processing ◽  
Power System ◽  
Low Frequency ◽  
Measurement Unit ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Interconnected Power System ◽  
Oscillation Detection ◽  
Processing Techniques ◽  
Signal Processing Techniques

Low-frequency oscillation can collapse the stability of the power system, which is considered to be one of the most significant challenges to a power system engineer. In earlier decades modal analysis was carried out for identifying lowfrequency oscillation modes, which have various drawbacks. In the present era, with the application of the Phasor measurement unit & various signal processing techniques, identification of lowfrequency oscillation is being carried out with accuracy to an extent. This paper provides a survey of recent research and development in the field of identification of low-frequency oscillation by different signal processing techniques. It is expected that this literature survey will provide researchers with some future direction in finding relevant references and developing suitable techniques for low-frequency oscillation detection in the interconnected power system.

Analysis of Power System Low Frequency Oscillation Considered the Impact of Turbine Power Changing

2014 ◽  
Vol 543-547 ◽  
pp. 751-756
Author(s):  
Pai Liu ◽  
Lin Zhang ◽  
Long Sheng Hu ◽  
Guo Jian Yang ◽  
Ye Zhou Hu
Keyword(s):  
Power System ◽  
Low Frequency ◽  
Power Grids ◽  
Sustained Oscillation ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Interconnected Power System ◽  
Power Oscillation ◽  
The Stability ◽  
The Impact

In this paper, the author introduced resonance mechanism into the stability analysis of power system, established comprehensive mathematical model including units and power grids by considering the effects from generation side and line side. On this basis, the author simulated several typical disturbances to analysis by MATLAB SIMULINK. The result showed that the power oscillation will be caused when the natural frequency of the grid and the frequency of disturbances are same or similar, especially in multi-area interconnected power system. The disturbances from different units can produce a significant impact transient or sustained oscillation by superposition, endanger the stability of power system.

Influence Assessment of UHV Project on Jiangxi Power Grid

2014 ◽  
Vol 960-961 ◽  
pp. 1029-1033
Author(s):  
Yong Chun Su ◽  
Kai Xuan Chang
Keyword(s):  
Power System ◽  
Simulation Model ◽  
Power Transmission ◽  
Power Grid ◽  
Low Frequency ◽  
System Stability ◽  
Energy Structure ◽  
Low Frequency Oscillation ◽  
Structure Transition ◽  
Speed Up

In order to face the challenge of our economy and the environment, it is needed to speed up the energy structure transition and UItra High voltage (UHV) transmission has become an inevitable choice. Researches on the influence of UHV project to Jiangxi power grid are carried out in this paper. Using advanced digital power system simulator (ADPSS), the real-time simulation model of Jiangxi power grid is build up including the UHV project. Based on the simulation model, the problem of low frequency oscillation in Jiangxi power system is studied after the UHV power transmission project accessed. The influence of the UHV transmission line faults on system stability of Jiangxi grid is also researched.

Oppositional Differential Search Algorithm for the Optimal Tuning of Both Single Input and Dual Input Power System Stabilizer

2021 ◽  
pp. 256-282
Author(s):  
Sourav Paul ◽  
Provas Kumar Roy
Keyword(s):  
Power System ◽  
Search Algorithm ◽  
Low Frequency ◽  
Input Power ◽  
Power System Stabilizer ◽  
Low Frequency Oscillation ◽  
Interconnected Power System ◽  
Low Frequency Oscillations ◽  
Single Input ◽  
System Stabilizer

Low frequency oscillation has been a major threat in large interconnected power system. These low frequency oscillations curtain the power transfer capability of the line. Power system stabilizer (PSS) helps in diminishing these low frequency oscillations by providing auxiliary control signal to the generator excitation input, thereby restoring stability of the system. In this chapter, the authors have incorporated the concept of oppositional based learning (OBL) along with differential search algorithm (DSA) to solve PSS problem. The proposed technique has been implemented on both single input and dual input PSS, and comparative study has been done to show the supremacy of the proposed techniques. The convergence characteristics as well authenticate the sovereignty of the considered algorithms.

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