NPTEL Smart Grid Basics to Advanced Technologies Week 7 Assignment Answers 2024
1. What do you mean by 7% droop in local hierarchical control?
I. A 7% deviation in nominal frequency causes a 100% change in output power
II. A 7% deviation in output power causes a 100% change in nominal frequency
III. A 70% deviation in nominal frequency causes a 1000% change in output power
IV. A 70% deviation in output power causes a 1000% change in nominal frequency
- I and III
- II and IV
- I, II, III, and IV
- None of the above
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2. Which one is the type of advanced droop control technique?
- Droop control
- Power line signaling
- Voltage leveling
- Virtual resistance-based droop control
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3. Which one of the following statements is correct
I. A hybrid storage system combines a battery with its energy management system and ultracapacitors.
II. The ultracapacitor is a Low energy and high-power density device.
- Only I
- Only II
- Both
- None
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4. Which of the following is not true in the context of global hierarchical control?
- It facilitates an economically optimal operation.
- It is the slowest control in the hierarchy
- It is a decentralized control
- Global control manages the power flow between the given MG and others.
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5. Which of the following are the operating mode/s of a grid?
- Grid-connected
- Islanded
- Both
- None of the above
Answer :-
6. What are the future research areas of hybrid microgrids?
- Communication systems
- Power management
- Economic concerns
- All of the above
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7. The microgrid which contains DGs, loads, and storage can be?
- AC microgrid only
- DC microgrid only
- Both AC and DC microgrid
- None
Answer :-
8. Which of the following is a type of intelligent control technique?
- Virtual impedance method
- Angle droop control
- Multi agent based Controllers
- All of the above
Answer :-
9. ___________ is a type of decentralized microgrid control.
- High potential difference
- DC bus signaling
- Self-discharge
- None of the above
Answer :-
10. What is the major drawback of voltage-level signaling?
- The number of sources in the system is restricted
- It is a nonlinear form of voltage droop
- Significant voltage deviations are permitted
- None of the above
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