Ancillary Protective and Control Functions Common to Multiple Protective Relays

The IEEE/PSRC Substation Protection Subcommittee Working Group (WG) K5 on Ancillary Protective and Control Functions Common to Multiple Protective Relays have produced a document that addresses the considerations in applying the ancillary protection, control and monitoring functions that are commonly available in multiple relays and the integration of these functions into the overall protection system. Modern protection schemes are designed with fully integrated protection, control and monitoring functions to accommodate the implementation of many different design requirements. These functions can be used to achieve reliable protection and control solutions. Implementing these designs can be an exhilarating and very satisfying challenge to the engineer's imagination. This summary paper addresses subjects related to specific protection and control topics with application examples which were covered in the special PSRC publication.