What is Generator Protection?

What is Generator Protection?

Generator Protection Definition

Generator protection is the process of safeguarding generators from various electrical, mechanical, and thermal stresses.

Types of Protection

Protective relays are used to detect both internal and external faults, ensuring comprehensive generator protection.

Insulation Failure Protection

Longitudinal differential protection and inter-turn fault protection are crucial for preventing phase-to-phase and phase-to-earth faults.

Rotor Fault Detection

Methods like potentiometer, AC injection, and DC injection are used to detect rotor earth faults, preventing severe mechanical damage.

Backup Protection

Overcurrent relays and undervoltage relays provide essential backup protection for generators, ensuring faults are cleared if primary protections fail.