GOOSE simulation - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - IEC 61850 Engineering Guide - REX615 Protection and control - PCL2 - IEC - ANSI - 14.05.2025

REX615 IEC 61850 Engineering Guide

When the IEC 61850 Edition 2 configuration has been selected for the protection relay, it is capable of processing simulated messages. The switchover to simulated messages requires that the relay is set to allow simulated messages and that it receives the first simulated message. Detection of simulated messages is separated per GOOSE publisher. Therefore, one GOOSE input may receive a simulated message while another input receives a real GOOSE message.

Figure 1. Receiving of GOOSE data in case of simulation or test mode
image/svg+xmlTarget Data Value and Quality Are Updated AccordinglyDevice In Test Mode?Test Diagnostic Counter +1GOOSE message receivedReceiver Edition >1?FALSETRUESimulation bit set in received frame?FALSETRUEDevice allows simulation?Test=TRUE set in received frame’s PDU?TRUETRUETRUETRUEFALSEFALSEKeep old valueReceived data quality=test?Device in test mode?TRUEReceived data quality=test?Device in test mode?TRUETRUETRUESet default value and mark data invalidFALSEReceivedalready one simulated message?Device allows simulation?TRUEReject frameTRUEFALSEFALSEKeep old valueFALSEFALSEReject frameFALSE

To set the protection relay to allow simulated GOOSE, either LD0.LPHD1.Sim is set to true via the IEC 61850 protocol or the Tests > IED Test > Allow simulation parameter is set via the WHMI or the LHMI to "Yes".

Switching back to receiving real GOOSE messages requires that the Tests > IED Test > Allow simulation parameter is set to "No" (or LD0.LPHD1.Sim = false). The values change to real ones after the first received real GOOSE message.