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

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 differenc...

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Bibliographic Details
Published inEnergies (Basel) Vol. 14; no. 14; p. 4220
Main Authors Orihara, Dai, Kikusato, Hiroshi, Hashimoto, Jun, Otani, Kenji, Takamatsu, Takahiro, Oozeki, Takashi, Taoka, Hisao, Matsuura, Takahiro, Miyazaki, Satoshi, Hamada, Hiromu, Mori, Kenjiro
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2021
Subjects
Alternative energy sources
Controllability
Controllers
Current sources
Electric potential
Frequency stability
Generators
grid-following
grid-forming
inverter-based resource
Inverters
PLL
Reactive power
Renewable resources
Simulation
Systems stability
virtual inertia
Voltage
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14144220