: Public Note
Created: |
07/03/2012 10:37:33 AM |
Modified: |
07/03/2012 10:39:05 AM |
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Project: |
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Author: |
civanov |
Version: |
1.0 |
Phase: |
1.0 |
Status: |
Proposed |
Complexity: |
Easy |
Difficulty: |
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Priority: |
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Multiplicity: |
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Advanced: |
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UUID: |
{CA85A6F1-A7D6-4555-8929-66C84BA08C48} |
Appears In: |
WiresNotes |
The GroundingImpedance and PetersenCoil connect the same way as other devices using Terminal. The phases attribute on Terminal indicates the connection is at the neutral phase.<br /></p><p><br /></p><p>If a PowerTransformer has a Y connection on one terminal (secondary) and in case you wish to connect a PetersenCoil. The PowerTransformer's secondary Terminal where the coil is connected should be specified with phases attribute equal to ABCN and the PetersenCoil's Terminal should be specified with phase N. This allows the ACLineSegment to connect with phases ABC (the default) and the PetersenCoil to connect to the same TransformerTerminal but only on the N phase. <br /></p><p><br /></p><p>Since ENTSO-E profile does not include Ground object it is expected all EarthFaultCompensators (GroundingImpedance and PetersenCoil) to have only one Terminal and be solidly connected to ground on the other unmodeled terminal. <br /></p><p>It is expected all PetersenCoil terminals to have only phase N. <br /></p><p><br /></p><p>Basically a normal modeling of non-neutral network is done then add to the Petersen coil model which includes: <br /></p><p>1) Adding the phasing of ABCN to the transformer secondary terminal so you have a place to connect neutral <br /></p><p>2) Adding the PetersenCoil object with its associated Terminal which is phase N, since only one Terminal is modeled the PetersenCoil is assumed solidly grounded <br /></p><p>3) Associate the PetersenCoil's single Terminal to the ConnectivityNode at transformer secondary.<br /></p>