scholarly journals Real-Time Simulation of Fluid Power Systems Containing Small Oil Volumes, Using the Method of Multiple Scales

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 196940-196950
Author(s):  
Mehran Kiani-Oshtorjani ◽  
Stanislav Ustinov ◽  
Heikki Handroos ◽  
Payman Jalali ◽  
Aki Mikkola
Keyword(s):  
Power Systems ◽  
Real Time ◽  
Multiple Scales ◽  
Method Of Multiple Scales ◽  
Fluid Power ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Fluid Power Systems

Real-Time Simulation of Fluid Power Systems

2021 ◽  
Author(s):  
Matthias Liermann ◽  
Christian Feller ◽  
Florian Lindinger
Keyword(s):  
Power Systems ◽  
Real Time ◽  
Fluid Power ◽  
Stiff Systems ◽  
Step Size ◽  
Basic Point ◽  
Real Time Simulation ◽  
Time Performance ◽  
Time Simulation ◽  
Fluid Power Systems

Abstract System-simulations involving fluid-power structures often result in numerically stiff model equations which may require prohibitively small simulation time steps when being tackled with a fixed-step solver. This poses a challenge in situations where real-time performance is required. This paper presents a practical rule-of-thumb to estimate the maximum permissible step-size for a given fluid power system and explains the influence of the relevant physical quantities on the step size requirement in simple terms. A categorization of methods suitable to relax the step-size requirement is proposed. Many research papers have been produced about methods and examples of how to improve real-time performance of fluid power systems, or stiff systems in general. The proposed categorization can be seen as a map for the simulation engineer to understand the basic point-of-attacks for the real-time simulation problem.

Power System Subsynchronous Oscillations Electromagnetic and Electromechanical Transient Hybrid Real-Time Simulation Based on RTDS

2012 ◽  
Vol 433-440 ◽  
pp. 2850-2855
Author(s):  
Lei Shi ◽  
Xiang Ning Xiao
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Power System ◽  
Real Time ◽  
Hybrid Simulation ◽  
Simulation Program ◽  
Simulation Technology ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Simulation Results

In this paper, power system electromagnetic and electromechanical transient hybrid real-time simulation technology is expounded in details, which has advantages of the electromagnetic transient simulation program and electromechanical ones. The more details needed to analyze the dynamic characteristics of power systems are provided by this hybrid simulation technology, and the scale of power system simulated is not limited in the hybrid simulation program. The hybrid simulation program is applied to analyze the power system subsynchronous oscillation problem occurred in a power plant with 4 turbine generators located in the northwestern China. According to the simulation results, it is clear that the stability of generators is threatened by the subsynchronous oscillations caused by capacitor series compensation in the transmission line connecting the power plant and the load center system. In meantime, the effectiveness of the countermeasure is validated simultaneously by the hybrid simulation results.

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