Small Signal Stability Analysis of a Microgrid in Grid-Connected Mode
Abstract
:1. Introduction
- Deriving a state space model of a MG in grid-connected mode, which involves a LCL filter, line impedance, and control system.
- Investigation of the impact of the LCL filter and line impedance parameters on the stability of a MG in grid-connected mode.
- Sensitivity analysis of MG parameters was performed to investigate the most sensitive parameters that affect the SSS of a MG in grid-connected mode.
2. Proposed Controller Design
3. State Space Model
3.1. Phase-Locked Loop
3.2. Droop Controller
3.3. Current Controller
3.4. LCL Filter
3.5. Bus
3.6. Full System
4. Simulation Model
5. Results and Discussion
6. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Parameter | Symbol | Value |
---|---|---|
Inverter-side parasitic resistance | ||
Grid-side parasitic resistance of the LCL filter | ||
Transmission line parasitic resistance | ||
Inverter-side inductance of the LCL filter | ||
Grid-side inductance of the LCL filter | ||
Transmission line inductance | ||
Filter capacitance | ||
Proportional gain of the current controller | ||
Integral gain of the current controller | ||
Frequency droop gain | m | |
Voltage droop gain | n | |
Inverter input DC voltage | ||
Switching frequency | ||
Grid voltage magnitude | ||
Fundamental frequency |
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Alnuman, H. Small Signal Stability Analysis of a Microgrid in Grid-Connected Mode. Sustainability 2022, 14, 9372. https://doi.org/10.3390/su14159372
Alnuman H. Small Signal Stability Analysis of a Microgrid in Grid-Connected Mode. Sustainability. 2022; 14(15):9372. https://doi.org/10.3390/su14159372
Chicago/Turabian StyleAlnuman, Hammad. 2022. "Small Signal Stability Analysis of a Microgrid in Grid-Connected Mode" Sustainability 14, no. 15: 9372. https://doi.org/10.3390/su14159372