Important Questions of Power System Protection:
- Explain briefly the role of protection in a power system.
- Describe the essential features of a protective relay with reference to reliability, selectivity, speed of operation and discrimination.
- What are the principal types of faults in a power system? In what way is a fault harmful to the power system?
- Define the terms: burden, pickup, reset, operating time.
- Explain what is meant by primary protection and backup protection.