Microgrid Pre-Synchronization Scheme for Suppressing Voltage Fluctuations and Avoiding Frequency Out-of-Limits
Abstract
:1. Introduction
2. Microgrid Structure and Control System
3. Improved Pre-Synchronization Control Strategy Based on V/f Control
3.1. Optimization Scheme for Suppressing Voltage Fluctuations
3.2. Optimization and Improvement of Frequency and Phase Control Loops
3.3. Islanded Microgrid Pre-Synchronization and Grid Connection Optimization Plan
4. Simulation Verification
4.1. Generation of Optimized PI Parameter Table
4.2. Improved Simulation Analysis of Voltage Pre-Synchronization Control
4.3. Simulation Analysis Based on Improved Phase-Frequency Loop Control
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Parameters | Values |
---|---|
Grid voltage | 380 V |
Grid frequency | 50 Hz |
Filter capacitor | 2.74 × 10−6 F |
Filter inductor | 3.5 × 10−3 H |
Photovoltaic output | 50 kW |
Energy storage output | 130 kW |
Loads | 180 kW |
Power factor | 0.95 |
−110 | 1.325 | 45.624 |
−100 | 2.652 | 58.621 |
−90 | 3.532 | 66.354 |
−80 | 4.264 | 71.216 |
−70 | 5.175 | 79.857 |
−60 | 5.876 | 88.722 |
−50 | 6.924 | 95.654 |
−40 | 8.231 | 101.322 |
−30 | 10.517 | 105.624 |
−20 | 11.942 | 110.781 |
−10 | 13.458 | 118.942 |
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Gong, R.; Qin, Y.; Liu, T.; Xu, J.; Wei, Z. Microgrid Pre-Synchronization Scheme for Suppressing Voltage Fluctuations and Avoiding Frequency Out-of-Limits. Electronics 2024, 13, 428. https://doi.org/10.3390/electronics13020428
Gong R, Qin Y, Liu T, Xu J, Wei Z. Microgrid Pre-Synchronization Scheme for Suppressing Voltage Fluctuations and Avoiding Frequency Out-of-Limits. Electronics. 2024; 13(2):428. https://doi.org/10.3390/electronics13020428
Chicago/Turabian StyleGong, Renxi, Yan Qin, Tao Liu, Jiawei Xu, and Zhihuan Wei. 2024. "Microgrid Pre-Synchronization Scheme for Suppressing Voltage Fluctuations and Avoiding Frequency Out-of-Limits" Electronics 13, no. 2: 428. https://doi.org/10.3390/electronics13020428
APA StyleGong, R., Qin, Y., Liu, T., Xu, J., & Wei, Z. (2024). Microgrid Pre-Synchronization Scheme for Suppressing Voltage Fluctuations and Avoiding Frequency Out-of-Limits. Electronics, 13(2), 428. https://doi.org/10.3390/electronics13020428