Automatic Relay Setting

摘要

Automated setting of complex modern relays improves productivity by applying utility rules consistently, simplifying routine data-handling and avoiding human error. Fast computers can run more thorough fault studies than those previously conducted manually. The algorithms presented here calculate the electrical settings for multiple overcurrent and distance elements and report the margins of secure operation. They apply to any directional comparison pilot scheme and to any relay model. The settings are verified graphically and in a system simulation that includes the pilot logic.