State of Charge Control Integrated with Load Frequency Control for BESS in Islanded Microgrid
Abstract
:1. Introduction
2. Frequency Response of Microgrid
3. BESS Model
3.1. Load Frequency Control
3.1.1. Region 1 (Droop Control with Deadband)
3.1.2. Region 2 (Battery Discharging Mode Flat Frequency)
3.1.3. Region 3 (Battery Charging Mode Flat Frequency)
3.1.4. LFC Regions
3.2. State-of-Charge (SOC) Control
4. Attributes of the Test System
5. Results and Discussion
5.1. Load Frequency Control Result
5.1.1. LFC Case 1—Load Increasing
5.1.2. LFC Case 2—Load Decreasing
5.2. LFC with SOC Control
5.2.1. SOC control Case 1—Load Increasing
5.2.2. SOC Control Case 2—Load Decreasing
5.2.3. SOC Control Case 3—PV Power Increasing
5.2.4. SOC Control Case 4—PV Power Decreasing
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Description | Parameter | Value |
---|---|---|
Frequency operation limit | fmax | 60.3 Hz |
fmin | 59.7 Hz | |
Frequency deadband | Δfdb | 0.1 Hz |
Shifted frequency max limit | fcrmax | 60.5 Hz |
Shifted frequency min limit | fcrmin | 59.5 Hz |
Generator droop gain | R | 0.03 pu |
BESS droop gain | Kb | 0.05 pu |
LFC proportional gain | KP | 5 |
LFC integrator gain | KI | 0.02 |
SOC control proportional gain | KPsoc | 0.1 |
SOC Control integrator gain | KIsoc | 0.1 |
Initial SOC | SOCinitial | 60.00% |
BESS SOC level | SOCmax2 | 75.00% |
SOCmax1 | 70.00% | |
SOCmin1 | 50.00% | |
SOCmin2 | 45.00% |
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Sitompul, S.; Hanawa, Y.; Bupphaves, V.; Fujita, G. State of Charge Control Integrated with Load Frequency Control for BESS in Islanded Microgrid. Energies 2020, 13, 4657. https://0-doi-org.brum.beds.ac.uk/10.3390/en13184657
Sitompul S, Hanawa Y, Bupphaves V, Fujita G. State of Charge Control Integrated with Load Frequency Control for BESS in Islanded Microgrid. Energies. 2020; 13(18):4657. https://0-doi-org.brum.beds.ac.uk/10.3390/en13184657
Chicago/Turabian StyleSitompul, Sandro, Yuki Hanawa, Verapatra Bupphaves, and Goro Fujita. 2020. "State of Charge Control Integrated with Load Frequency Control for BESS in Islanded Microgrid" Energies 13, no. 18: 4657. https://0-doi-org.brum.beds.ac.uk/10.3390/en13184657