Design of a reactive power droop control for generation system without inertia
In this report, a conventional Voltage-Reactive (V-Q) and Frequency-Power (F-P) droop are introduced in the microgrid. Renewable generation units connected to the microgrid introduces voltage and frequency instability into the system due to their intermittency. The droop control is developed a...
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| 格式: | Final Year Project |
| 語言: | English |
| 出版: |
2019
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| 主題: | |
| 在線閱讀: | http://hdl.handle.net/10356/77781 |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | In this report, a conventional Voltage-Reactive (V-Q) and Frequency-Power (F-P) droop
are introduced in the microgrid. Renewable generation units connected to the microgrid
introduces voltage and frequency instability into the system due to their intermittency. The
droop control is developed and implemented to investigate the stability of the voltage and
frequency using the conventional droop curve.
The droop control is simulated using the equipment located in the Clean Energy Research
Laboratory (CERL) at S2-B7C-05 and LabVIEW is used as the main programming platform.
A 18kVA three-phase Programmable AC Source also called the Chroma Programmable AC
Source, a 13.5kVA Synchronous Generator and a 10kW Simulated Industrial Load to vary the
load demand would also be used to design and validate the droop control. The key difference
between the 18kVA three-phase Programmable AC Source and the 13.5kVA Synchronous
Generator is that the 18kVA three-phase Programmable AC Source does not have rotating
parts and hence it does not have inertia. However, the 18kVA three-phase Programmable AC
Source could still be programmed to emulate the F-P droop with the exception that the rate of
change of frequency would be very large as compared to the Synchronous Generator. The
problem with the high rate of change of frequency could be fixed by programming the 18kVA
three-phase Programmable AC Source to include inertia.
The results show that the droop control can maintain both the system frequency and
voltage to its nominal rating by regulating the setpoint of the respective droops. This indicates
the significant effect that the droop control has on maintaining the stability of the voltage and
frequency in the microgrid. |
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