This paper presents implementation details of a generator protection scheme with characteristics tailored to the generator capability curve of the machine. The proposed scheme provides improved generator protection and simplifies coordination of scheme elements with the generator underexcitation limiter. 

Capability Curve-Based Generator Protection Minimizes Generator Stress and Maintains Power System Stability

This paper describes a new breaker failure scheme for generator breakers that is based on voltage measurements to detect the failure of a generator breaker to open and separate the generator from the power system. The paper discusses details of the scheme and application and operation considerations relative to generating plant bus topology. 

New Voltage-Based Breaker Failure Scheme for Generators

This paper takes an in-depth look at the injection-based stator ground protection principle, reviews state-of-the-art techniques, and reports on a standalone injection-based relay capable of offering 64S 100 percent stator ground protection all of the time.

Injection-Based Generator Stator Ground Protection Advancements

PROT 409: Generation System Protection

Generator Protection

Generator protection products and systems provide complete protection for all types of generator faults. They are suited for use in industrial- and commercial-scale facilities.

Generator Protection

Protective Relays

System Components