Line Sectionalizing and Load Shedding with ABB Protective Relays Application Note

This application note explains how to implement advanced line sectionalizing and load shedding techniques using ABB protective relays (TPU 2000R, DPU 2000R, PCD 2000) integrated with a programmable logic controller (PLC) and Modbus/Modbus Plus communication. It details both automatic and manual restoration modes, where the PLC reads breaker status and metering data from relays, calculates load reserves, and performs intelligent switching decisions to restore power after faults.