Integrated generator protection, monitoring and control

The development of numeric protection has been prolific. A numeric device can provide a number of protection and nonprotection functions which are integrated into a single unit. The protection of feeders was the first area to benefit from the emergence of this type of multi-functional approach, which has become widely accepted. Generator protection, which traditionally uses a number of discrete protective relays to provide each protective function, lends itself to the application of an integrated numeric device. The application of numeric devices for generator protection is now beginning to gain widespread acceptance. The benefits of using this type of protection are detailed in this paper. The protection and nonprotection features are discussed. Protection features include frequency tracking, input blocking, and dual settings, while the nonprotection features include instrumentation, event, fault and disturbance recording, test facilities, self monitoring and remote communication