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

Mask and Parameters

  

NameDescriptionUnit

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

Sample Time

Computational time step

s


Inputs, Outputs and Signals Available for Monitoring

Inputs

NameDescriptionUnit

OC

Over current event flag

-

U/O V

Unver or over voltage event flag

-

U/O F

Under or over frequency event flag

-

ROCOF

Over ROCOF event flag

-

CLR

Clear the fault

-

Outputs

NameDescriptionUnit

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.

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

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