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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 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 |
Sample Time | Computational time step | s |
Inputs, Outputs, and Signals Available for Monitoring
Inputs
| Name | Description | Unit |
|---|---|---|
OC | Over-current event flag | - |
U/O V | Unver Under or over voltage event flag | - |
U/O F | Under or over frequency event flag | - |
ROCOF | Over Rate of Change of Frequency (ROCOF) event flag | - |
CLR | Clear the fault | - |
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| 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. |
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