DC Line Model: CDCMC
AutoCorrection Properties
To be documented.
Model Equations and/or Block Diagrams
For a Detailed Treatment of how DC lines are implemented in the software see the help topic here.
Parameters:
| ALFDY | Minimum alpha for dynamics |
| GAMDY | Minimum gamma for dynamics |
| KGI | gain of gamma error feedback |
| TGI | time constant of gamma error feedback |
| KACI | inverter AC voltage error gain |
| KGR | gain of alpha error feedback |
| TGR | time constant of alpha error feedback |
| KACR | rectifier AC voltage error gain |
| TAC2 | AC error signal lead time constant |
| TAC1 | AC error signal lag time constant |
| VACIHL | high limit on inverter AC voltage feedback |
| VACILL | low limit on inverter AC voltage feedback |
| VACRHL | high limit o rectifier AC voltage feedback |
| VACRLL | low limit on rectifier AC voltage feedback |
| EACHL | AC error signal high limit |
| EACLL | AC error signal low limit |
| KEDO | Edo regulator gain |
| TEDO | Edo regulator time constant |
| EDOHL | Edo regulator high limit |
| EDOLL | Edo regulator low limit |
| VRFIMN | Minimum AC inverter voltage (pu) which will create an initial limit violation warning |
| VRFIMX | Maximum AC inverter voltage (pu) which will create an initial limit violation warning |
| VRFRMN | Minimum AC rectifier voltage (pu) which will create an initial limit violation warning |
| VRFRMX | Maximum AC rectifier voltage (pu) which will create an initial limit violation warning |
| ALFAH | Alpha Hysteresis. Angle is not presently used by PowerWorld. |
| TP | standard rectifier control lap time constant |
| EVHL | scheduled DC voltage high limit |
| EVLL | scheduled DC voltage low limit |
| EDONOM | nominal Edo regulator setpoint |
| TVDC | voltage dip compensation lag time constant |
| TOVDC | voltage dip compensation time delay |
| IDCMX | voltage dip compensation DC current maximum |
| IDCMN | voltage dip compensation DC current minimum |
| VDCPK | voltage dip compensation DC pickup voltage |
| VDCMN | voltage dip compienstion DC voltage minimum |
| VDBASE | rated DC line volts (kV) |
| IDBASE | rated DC line current Amps |
| VBLOCK1 | delayed blocking threshold |
| VBLOCK2 | immediately block threshold |
| VUNBLOK | voltage for restart following blocking |
| TBLOCK | delay time following dip below Vblockl |
| TUNBLOK | delay time for restart after dip to Vblock2 |
| CRAMP | unblocking current ramp rate |