1 Mask and Parameters
2 Inputs, Outputs, and Signals Available for Monitoring
- 2.1 Inputs
- 2.2 Outputs
3 References
4 Intellectual Property Disclaimer

This block is used to integrate all trip signals from the protection blocks into a single output trip signal. The output trip signal is held until a clear signal is received.

Mask and Parameters

Name	Description	Unit

Bridge Protection	Enable/Disable the bridge protection	-
Voltage Protection	Enable/Disable the voltage protection	-
Frequency Protection	Enable/Disable the frequency protection	-
Initial Value of Disable	Specifies the initial value of the output signal until the initialization freeze time is passed	-
Initialization Freeze Time	During this time, the block does not acknowledge abnormal conditions	s

Inputs, Outputs, and Signals Available for Monitoring

Inputs

Name	Description	Unit

OC	Over-current event flag	-
UOV	Under or over voltage event flag	-
UOF	Under or over frequency event flag	-
ROCOF	Over Rate of Change of Frequency (ROCOF) event flag	-
CLR	Clear the fault	-

Outputs

Name	Description	Unit

Disable	Latched output to disable the converter and all the control layers	-

References

[1] IEEE, "IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces," IEEE Std 1547-2018 (Revision of IEEE Std 1547-2003), no. doi: 10.1109/IEEESTD.2018.8332112, pp. 1-138, 2018.

[2] IEEE, "IEEE Standard Conformance Test Procedures for Equipment Interconnecting Distributed Energy Resources with Electric Power Systems and Associated Interfaces," IEEE Std 1547.1-2020, pp. 1-282, 2020.

[3] U.S. National Renewable Energy Laboratory, "Study and Development of Anti-Islanding Control for Grid-Connected Inverters," Golden, CO, 2004.

Intellectual Property Disclaimer

Natural Resources Canada owns all intellectual property rights in the Smart Inverter Modelling Toolbox software and related products.

HYPERSIM Documentation

Protection Latch