NPTEL Smart Grid Basics to Advanced Technologies Week 5 Assignment Answers 2024
1. Which of the following uses technologies like SCADA, and PLCC to monitor circuit breaker status?
- Passive Islanding Detection Techniques
- Active Islanding Detection Techniques
- Hybrid Islanding Detection Techniques
- Communication Islanding Detection Techniques
Answer :- For Answers Click Here
2. In a smart grid, the penetration of DER affects:
- Level of fault current
- Direction of fault current
- Sensitivity of protection devices
- All of these
Answer :- For Answers Click Here
3. Which of these Communication Based Techniques exhibit full control of both the grid and the DG?
- Power line carrier communication (PLCC)
- Signal produced by disconnect (SPD)
- Supervisory control and data acquisition (SCADA)
- Synchrophasor Measurement Unit based
Answer :- For Answers Click Here
4. Voltage unbalance is used to initiate ___________ method.
- Current injection
- Positive feedback
- Frequency set point
- None of these
Answer :-
5. Power line carrier communication (PLCC) uses a __________-energy communication signal along the power line.
- High
- Low
- Medium
- Extremely high
Answer :-
6. For the detection of islanding, the set point for voltage relays is:
- OVR-1.05pu; UVR-0.95
- OVR-1.1pu; UVR-0.9
- OVR-1.1pu; UVR-0.88
- OVR-1.2pu; UVR-0.8
Answer :- For Answers Click Here
7. In context of Power Quality Monitoring, Inverters work on PWM principles and generate:
- Lower order harmonics
- No harmonics
- Higher order harmonics
- None of these
Answer :-
8. In which of the following IDTs is the DER is driven into unstable mode?
- Current injection technique
- Positive feedback technique
- Passive IDTs
- None of these
Answer :-
9. ROCOF IDT requires a minimum power mismatch of ____________?
- 10%
- 15%
- 20%
- 25%
Answer :-
10. Failure to detect unintentional islanding events impose which of the following events?
- Malfunction of protective devices
- Equipment damage
- Threats to personal or crewman safety
- All of the above
Answer :- For Answers Click Here
