Novel method of finding the first swing stability margin of a power system from time domain simulation

1996 ◽  
Vol 143 (5) ◽  
pp. 413 ◽  
Author(s):  
M.H. Haque
Keyword(s):  
Power System ◽  
Time Domain ◽  
Stability Margin ◽  
Time Domain Simulation ◽  
Novel Method

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 Modelling and Simulation for Small Signal Stability of Multi-machine Power System under Various Disturbance Conditions

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Ohnmar Swe
Keyword(s):  
Power System ◽  
Time Domain ◽  
Test System ◽  
Small Signal ◽  
Time Domain Simulation ◽  
Small Signal Stability ◽  
Signal Stability ◽  
Rotor Angle ◽  
Network Fault ◽  
Signal Dynamic

This paper presents the small signal stability of multi-machine power system over the 58-Bus, 26-Machine, Yangon Distribution Network and is validated with MATLAB software under various disturbance conditions. Time-domain solution analysis is employed to determine the small signal dynamic behavior of test system. Transtability model is used to perform time-domain simulation in SIMULINK. The simulation is carried out for normal condition, reference voltage of regulator (Vref) disturbance, mechanical torque (Tm)disturbance and network (fault) disturbance and the conditions of change in center of inertia for rotor angle (delta COI),  slip for center of inertia (slip COI), field current and mechanical torque are observed. According to the simulation results, perturbation of Vref shows only instability on the system. But ramping of Tm and network disturbance can cause large disturbance on the system and unstable conditions can be observed.

Multifrontal Solver for Online Power System Time-Domain Simulation

2008 ◽  
Vol 23 (4) ◽  
pp. 1727-1737 ◽  
Author(s):  
Siddhartha Kumar Khaitan ◽  
James D. McCalley ◽  
Qiming Chen
Keyword(s):  
Power System ◽  
Time Domain ◽  
Time Domain Simulation ◽  
System Time
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