ADVANCED LOAD-SHEDDING FUNCTIONS IN DISTRIBUTION PROTECTION RELAYS

The paper analyzes the requirements and methods for loadshedding in distribution systems and discusses frequency and voltage based functions in protection relays. Centralized and distributed load-shedding schemes are described. The impact of IEC 61850 on load-shedding is considered as well. Testing of advanced load-shedding functions is discussed at the end of the paper.