ANTI_ISLAND_1547
Two-stage abnormal voltage and frequency trip with an unintentional-islanding clearing time, to IEEE 1547 settings.
When to use it
Use ANTI_ISLAND_1547 when a DER or microgrid must cease to energize the area EPS within the clearing times of its interconnection agreement — on abnormal voltage, abnormal frequency, or a detected unintentional island.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type | Unit |
|---|---|---|
| ENABLE | BOOL | — |
| V_PU | REAL | pu |
| FREQ | REAL | Hz |
| MEAS_OK | BOOL | — |
| ISLAND_DET | BOOL | — |
| CLEAR_T | TIME | — |
| OV2_PU | REAL | pu |
| OV2_T | TIME | — |
| OV1_PU | REAL | pu |
| OV1_T | TIME | — |
| UV1_PU | REAL | pu |
| UV1_T | TIME | — |
| UV2_PU | REAL | pu |
| UV2_T | TIME | — |
| OF2_HZ | REAL | Hz |
| OF2_T | TIME | — |
| OF1_HZ | REAL | Hz |
| OF1_T | TIME | — |
| UF1_HZ | REAL | Hz |
| UF1_T | TIME | — |
| UF2_HZ | REAL | Hz |
| UF2_T | TIME | — |
| AUTO_RESET | BOOL | — |
| RECONNECT_PERMIT | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type |
|---|---|
| TRIP | BOOL |
| STAGE | USINT |
| PICKUP | BOOL |
| V_ABNORMAL | BOOL |
| F_ABNORMAL | BOOL |
| ALM_MEAS_FAULT | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
ANTI_ISLAND_1547 commands a real actuator. It is written to sit underneath your own interlock, permissive and protection logic — not to replace it. Commission it as you would any control block you wrote yourself.
Validation evidence
- Tests
- 11
- Simulated scans
- 288
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download ANTI_ISLAND_1547 — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.