Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator
Abstract
:1. Introduction
2. Critical Boundary Index (CBI)
3. Virtual Synchronous Generator Model
3.1. Active and Reactive Power Reference Generation Strategy
3.2. Virtual Synchronous Generator Control Strategy
3.3. Virtual Impedance Model
4. Simulation Results
4.1. Case 1: Dynamic Voltage Stability during Renewable Energy Output Fluctuation
- Case 1.1:
- Slow ramp-down of renewable energy output
- Case 1.2:
- Fast ramp-down of renewable energy output.
- Case 1.3:
- Sudden drop in renewable energy output.
4.2. Case 2: Dynamic Voltage Stability during One-Line Outage of Transmission Line
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Description | Value |
---|---|
Sending end voltage | 6.6 kV |
Initial load | 2.5 MW |
Load power factor | 0.8 pu |
Frequency | 60 Hz |
Line resistance | 1 |
Line inductance | 0.001 H |
Description | Symbol | Value |
---|---|---|
Nominal active power | 200 kW | |
Nominal reactive power | 150 kvar | |
Nominal frequency | 60 Hz | |
Nominal voltage | 6.6 kV | |
Droop coefficient of frequency | 3,000,000 | |
Droop coefficient of voltage | 30.3 | |
Virtual inertia coefficient | J | 0.002 |
Virtual damping coefficient | 0.2 | |
Integral gain | k | 20,000 |
Virtual resistance | r | 2 |
Virtual reactance | x | 27 |
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Nakadomari, A.; Miyara, R.; Alharbi, T.; Prabaharan, N.; Rangarajan, S.S.; Collins, E.R.; Senjyu, T. Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator. Energies 2021, 14, 5851. https://doi.org/10.3390/en14185851
Nakadomari A, Miyara R, Alharbi T, Prabaharan N, Rangarajan SS, Collins ER, Senjyu T. Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator. Energies. 2021; 14(18):5851. https://doi.org/10.3390/en14185851
Chicago/Turabian StyleNakadomari, Akito, Ryo Miyara, Talal Alharbi, Natarajan Prabaharan, Shriram Srinivasarangan Rangarajan, Edward Randolph Collins, and Tomonobu Senjyu. 2021. "Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator" Energies 14, no. 18: 5851. https://doi.org/10.3390/en14185851