Improved frequency stability of the ammonia laser

1992 ◽  
Vol 54 (2) ◽  
pp. 126-131 ◽  
Author(s):  
K. J. Siemsen ◽  
A. A. Madej ◽  
G. R. Hanes ◽  
J. Reid
Keyword(s):  
Frequency Stability ◽  
Ammonia Laser

Frequency Stability of Intentional Controlled Islanding Scheme in the Future European Synchronous Transmission Grid

2021 ◽  
Author(s):  
Mariano Dominguez Librandi ◽  
Daniel Stenzel ◽  
Thomas Wurl ◽  
Dominic Hewes ◽  
Lorenz Viernstein ◽  
...  
Keyword(s):  
Frequency Stability ◽  
Transmission Grid ◽  
Controlled Islanding ◽  
The Future

scholarly journals Contribution of Voltage Support Function to Virtual Inertia Control Performance of Inverter-Based Resource in Frequency Stability

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4220
Author(s):  
Dai Orihara ◽  
Hiroshi Kikusato ◽  
Jun Hashimoto ◽  
Kenji Otani ◽  
Takahiro Takamatsu ◽  
...  
Keyword(s):  
Reactive Power ◽  
Control Function ◽  
Current Source ◽  
Voltage Control ◽  
Frequency Stability ◽  
Voltage Regulation ◽  
System Stability ◽  
Voltage Source ◽  
Apparent Difference ◽  
Virtual Inertia

Inertia reduction due to inverter-based resource (IBR) penetration deteriorates power system stability, which can be addressed using virtual inertia (VI) control. There are two types of implementation methods for VI control: grid-following (GFL) and grid-forming (GFM). There is an apparent difference among them for the voltage regulation capability, because the GFM controls IBR to act as a voltage source and GFL controls it to act as a current source. The difference affects the performance of the VI control function, because stable voltage conditions help the inertial response to contribute to system stability. However, GFL can provide the voltage control function with reactive power controllability, and it can be activated simultaneously with the VI control function. This study analyzes the performance of GFL-type VI control with a voltage control function for frequency stability improvement. The results show that the voltage control function decreases the voltage variation caused by the fault, improving the responsivity of the VI function. In addition, it is found that the voltage control is effective in suppressing the power swing among synchronous generators. The clarification of the contribution of the voltage control function to the performance of the VI control is novelty of this paper.

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