scholarly journals Small Signal Stability Assessment in Presence of SSSC for a Power System Under Fault Disturbance

2021 ◽  
Vol 4 (1) ◽  
pp. 136-139
Author(s):  
Rupali Brahmachary ◽  
Dipu Sarkar
Keyword(s):  
Power Systems ◽  
Optimal Operation ◽  
Power Grids ◽  
System Response ◽  
Small Signal ◽  
Small Signal Stability ◽  
Signal Stability ◽  
Facts Controllers ◽  
Stability Issues ◽  
Static Synchronous Series Compensator

The use of FACTS controllers in power grids has resulted in the improvement of stability issues related to the power systems. When the FACTS controllers are used to damp out the power systems oscillation, there series controller inverter like static synchronous series compensator (SSSC) device are the most suitable to resolve the issue. In this paper, importance is given on the optimal operation of the SSSC and to the maintenance of the small signal stability of the system. Here the main focus is to check the system response to stability after the use of SSSC device.

scholarly journals Stability of Power Grids: State-of-the-art and Future Trends

2019 ◽  
Vol 217 ◽  
pp. 01017
Author(s):  
Nikita Tomin ◽  
Daniil Panasetsky ◽  
Alexey Iskakov
Keyword(s):  
Steady State ◽  
Lyapunov Function ◽  
Power Systems ◽  
Transient Stability ◽  
State Of The Art ◽  
Test System ◽  
Power Grids ◽  
Small Signal ◽  
Small Signal Stability ◽  
Signal Stability

The state of the art of transient stability and steady-state (small signal) stability in power grids are reviewed. Transient stability concepts are illustrated with simple examples; in particular, we consider two machine learning-based methods for computing region of attraction: ROA produced by Neural Network Lyapunov Function; estimation of the ROA of IEEE 39-bus system using Gaussian process and Converse Lyapunov function. We discuss steady state stability in power systems, and using Prony’s modal analysis for evaluating small signal stability for the 7 Bus Test system and real French power system.

scholarly journals An Analytical Model for Small Signal Stability Analysis in Unbalanced Electrical Power Systems

2020 ◽  
Vol 10 (24) ◽  
pp. 8855
Author(s):  
Humberto Verdejo ◽  
Pablo Moreira ◽  
Wolfgang Kliemann ◽  
Cristhian Becker ◽  
José Delpiano
Keyword(s):  
Stability Analysis ◽  
Power Systems ◽  
General Model ◽  
Electrical Power ◽  
Small Signal ◽  
Small Signal Stability ◽  
Electrical Power Systems ◽  
Signal Stability ◽  
Phase Representation ◽  
Small Signal Stability Analysis

This paper presents a general model to carry out a small signal stability analysis in electrical power systems (EPSs) that operate in unbalanced conditions. The classic traditional approach is based on a phase representation where it is supposed that the triphasic electric grid does not suffer any variations during its operation. With the presence of unbalances in transmission lines and loads, it is necessary to develop a general model that allows answering the needs and challenges with which modern electric systems must deal. The present work firstly intends to address the three-phase representation of an EPS, including the controllers. The proposed model is applied to a classical test system, a three machine-nine bus system, considering all the dynamic and algebraic variations associated with angular stability analysis. The proposed approach to small signal stability analysis shows results that differ from the classical analysis. The results are backed up with time domain simulations, and therefore, these results could be used in the calculation of the controllers that operate in unbalanced multimachine systems.

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