Fast time domain simulation of power systems using multilevel preconditioners with adaptive reconstruction strategies

2012 ◽  
Vol 25 ◽  
pp. 90-105 ◽  
Author(s):  
Shiming Xu ◽  
Wei Xue ◽  
Ke Wang ◽  
Hai Xiang Lin
Keyword(s):  
Power Systems ◽  
Time Domain ◽  
Fast Time ◽  
Time Domain Simulation ◽  
Multilevel Preconditioners ◽  
Adaptive Reconstruction

scholarly journals Enhancing Oscillation Damping in an Interconnected Power System with Integrated Wind Farms Using Unified Power Flow Controller

Energies ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 322 ◽  
Author(s):  
Ping He ◽  
Seyed Arefifar ◽  
Congshan Li ◽  
Fushuan Wen ◽  
Yuqi Ji ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Time Domain ◽  
Power Flow ◽  
Unified Power Flow Controller ◽  
Time Domain Simulation ◽  
Interconnected Power System ◽  
Dynamic Time ◽  
Oscillation Damping ◽  
Power Flow Controller

The well-developed unified power flow controller (UPFC) has demonstrated its capability in providing voltage support and improving power system stability. The objective of this paper is to demonstrate the capability of the UPFC in mitigating oscillations in a wind farm integrated power system by employing eigenvalue analysis and dynamic time-domain simulation approaches. For this purpose, a power oscillation damping controller (PODC) of the UPFC is designed for damping oscillations caused by disturbances in a given interconnected power system, including the change in tie-line power, the changes of wind power outputs, and others. Simulations are carried out for two sample power systems, i.e., a four-machine system and an eight-machine system, for demonstration. Numerous eigenvalue analysis and dynamic time-domain simulation results confirm that the UPFC equipped with the designed PODC can effectively suppress oscillations of power systems under various disturbance scenarios.

scholarly journals Fast Time-Domain Simulation for Reliable Fault Detection

2016 ◽  
Author(s):  
Bratislav Tasić ◽  
Jos J. Dohmen ◽  
Rick Janssen ◽  
E. Jan W. ter Maten ◽  
Roland Pulch ◽  
...  
Keyword(s):  
Fault Detection ◽  
Time Domain ◽  
Fast Time ◽  
Time Domain Simulation

Risk of Transient Stability Using Rotor Trajectory Index as Severity Function

2017 ◽  
Vol 6 (3) ◽  
pp. 591
Author(s):  
Elmotaz Billa Elghali ◽  
Marayati Marsadek ◽  
Agileswari K. Ramasamy
Keyword(s):  
Power Systems ◽  
Time Domain ◽  
Transient Stability ◽  
Quantitative Measure ◽  
Time Domain Simulation ◽  
New Approach ◽  
Three Phase ◽  
Degree Of Stability ◽  
Transient Instability ◽  
Risk Formula

This paper presents a new approach to determine the risk of transient stability. It describes the implementation of rotor trajectory index (RTI) to assess the severity of power systems when it is subjected to a three-phase fault. The (RTI) is proposed as an index used to represent severity of transient instability. Risk of transient stability for three-phase fault is calculated using a well-known risk formula. Risk of transient stability provides a quantitative measure to evaluate the potential loss of synchronism of a generator that takes into account the probability and consequences. RTI index is calculated based on the machines rotor angles obtained at each step of a time domain simulation. RTI is proposed as an index to show the severity of the three-phase fault towards transient stability since it allows a fast and accurate measurement of the degree of stability of the system facing a fault. The proposed technique is implemented on the IEEE 39-bus system.

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