Modeling the Transient Energy Margin for Accessing the Transient Stability with Double Shot Automatic Line Reclosing in Power System

2018 ◽  
Author(s):  
H.V. Quang Luu
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Automatic Line ◽  
Transient Energy

scholarly journals Investigating the impacts of the SVCs and the SCs affecting to the transient stability in multi-machine power system

2016 ◽  
Vol 19 (2) ◽  
pp. 16-24
Author(s):  
Quang Huu Vinh Luu
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Reactive Power ◽  
Voltage Regulation ◽  
State Variables ◽  
Static Var Compensators ◽  
Transient Energy ◽  
Voltage Frequency ◽  
Power Outputs ◽  
Synchronous Condensers

A new algorithm simulating the impacts of the VAR supporting devices such as the static var compensators (SVCs) and the synchronous condensers (SCs) under condition of symmetrical disturbances in multi-machine power system is mentioned. Some typical numerical examples are presented in this article. The comparisons of variation of the state parameters, such as the voltage, frequency, reactive power outputs and asynchronous torques…are simulated under condition of the action of the automatic voltage regulation systems of generators and of the VAR supporting devices. The transient energy margins are calculated and compared to assess the transient stability in multi-machine power system. Basing on this algorithm, the PC program uses the elements of the eigen-image matrix to bring the specific advantages for the simulation of the transient features of state variables.

Power System Transient Stability Assessment Based on Critical Cutset Transient Stability Available Capacity

2014 ◽  
Vol 615 ◽  
pp. 80-83
Author(s):  
Ke Wang ◽  
Da Hai You ◽  
Ceng Long ◽  
Peng Xu ◽  
Ling Ling Pan ◽  
...  
Keyword(s):  
Power System ◽  
Transient Stability ◽  
Stability Margin ◽  
Control Measures ◽  
System Control ◽  
Prevention Measures ◽  
Power System Control ◽  
Transient Energy Function ◽  
Transient Energy ◽  
Fault Clearance

Aiming at the disadvantages of converting traditional transient stability margin into power system control measures, this paper proposes a new transient stability margin characterization method based on critical cutset transient stability available capacity (TATC). Compared with traditional transient stability margin based on fault clearance time or transient energy function, TATC can directly reflects power system transient stability margin form the view of power which is more conducive for power system planning and operation personnel to grasp system transient stability state, at the same time, is also advantageous for prevention measures and emergency control measures to be developed directly according TATC. Simulation results based on IEEE50 machine 145 bus system show that the proposed TATC can effectively characterize power system transient stability margin.

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