Distributed Generation Model: DGDER_A
AutoCorrection Properties
To be documented.
Model Equations and/or Block Diagrams
The DGDER_A Load Distributed Generation model is identical to the machine model DER_A. See the help documentation on DER_A for more information.
Parameters:
| PfFlag | PfFlag: 0 means for constant Q control; 1 means constant power factor control (any number which is not 0 is treated as 1) |
| FreqFlag | FreqFlag: 0 means frequency control disabled; 1 means frequency control enabled (any number which is not 0 is treated as 1) |
| PQFlag | PQFlag: 0 means Q priority; 1 means P priority for current limit (any number which is not 0 is treated as 1) |
| TypeFlag | TypeFlag: 0 means the unit is a storage device and Ipmin = - Ipmax; 1 means the unit is a generator Ipmin = 0 (any number which is not 0 is treated as 1) |
| VtripFlag | VtripFlag: 0 means disable the voltage trip logic; 1 means enable the voltage trip logic (any number which is not 0 is treated as 1) |
| FtripFlag | FtripFlag: 0 means disable the frequency trip logic; 1 means enable the frequency trip logic (any number which is not 0 is treated as 1) |
| Trv | Trv: transducer time constant (seconds) for voltage measurement (can be zero) |
| Trf | Trf: transducer time constant (seconds) for frequency measurement (> 0) |
| dbd1 | dbd1: lower voltage deadband <= 0 (pu) |
| dbd2 | dbd2: upper voltage deadband >= 0 (pu) |
| Kqv | Kqv: proportional voltage control gain (pu/pu) |
| Vref0 | Vref0: voltage reference set-point (pu) |
| Tp | Tp: transducer time constant (seconds) |
| Tiq | Tiq: Q control time constant (seconds) |
| Ddn | Ddn: frequency control droop gain >= 0 (down-side) |
| Dup | Dup: frequency control droop gain >= 0 (up-side) |
| fdbd1 | fdbd1: lower frequency control deadband <= 0 (pu) |
| fdbd2 | fdbd2: upper frequency control deadband >= 0 (pu) |
| femax | femax: frequency control maximum error (pu) >= 0 |
| femin | femin: frequency control minimum error (pu) <= 0 |
| Pmax | Pmax: Maximum power (pu) |
| Pmin | Pmin: Minimum power (pu) |
| dPmax | dPmax: Power ramp rate up >= 0 (pu/s) |
| dPmin | dPmin: Power ramp rate down <= 0 (pu/s) |
| Tpord | Tpord: Power order time constant (seconds) |
| Kpg | Kpg: active power control proportional gain |
| Kig | Kig: active power control integral gain |
| Imax | Imax: Maximum converter current (pu) |
| Vl0 | Vl0: voltage break-point for low voltage cut-out of the inverter (Multiplier = 0.0 at this voltage) |
| Vl1 | Vl1: voltage break-point for low voltage cut-out of the inverter (Multiplier = 1.0 at this voltage) |
| Vh0 | Vh0: voltage break-point for high voltage cut-out of the inverter (Multiplier = 0.0 at this voltage) |
| Vh1 | Vh1: voltage break-point for high voltage cut-out of the inverter (Multiplier = 1.0 at this voltage) |
| Tvl0 | Tvl0: voltage break-point for low voltage cut-out timer (If voltage stays below vl0 for more than tvl0 seconds, then the multiplier will remain zero for the simulation) |
| Tvl1 | Tvl1: voltage break-point for low voltage cut-out timer (If voltage stays below vl1 for more than tvl1 seconds, then the multiplier will track a depressed curve according to Vrfrac and an internally tracked value of the minimum voltage experienced during the simulation) |
| Tvh0 | Tvh0: voltage break-point for high voltage cut-out timer (If voltage stays above vl0 for more than tvl0 seconds, then the multiplier will remain zero for the simulation) |
| Tvh1 | Tvh1: voltage break-point for high voltage cut-out timer (If voltage stays above vl1 for more than tvl1 seconds, then the multiplier will track a depressed curve according to Vrfrac and an internally tracked value of the maximum voltage experienced during the simulation) |
| Vrfrac | Vrfrac: fraction of device that recovers after voltage comes back to within vl1 < V < vh1 (Note that the timers Tvl1 and Tvh1 also impact when this fraction is used) |
| Tv | Tv: time constant on the output of the voltage cut-out |
| fl | fl: frequency break-point for low frequency cut-out of the inverter (Hertz) |
| fh | fh: frequency break-point for high frequency cut-out of the inverter (Hertz) |
| Tfl | Tfl: frequency break-point for low frequency cut-out timer (seconds) (highly recommend that Tfl > Trf) |
| Tfh | Tfh: frequency break-point for high frequency cut-out timer (seconds) (highly recommend that Tfh > Trf) |
| Vpr | Vpr: voltage below which frequency tripping is disabled (pu) |
| Tg | Tg: Current control time constant |
| rrpwr | rrpwr: Power rise ramp rate following a fault >= 0 (pu/s) |
| Xe | Xe: Generator effective reactive (pu) > 0 |
| Iqh1 | Iqh1: Maximum limit of reactive current injection, p.u. |
| Iql1 | Iql1: Minimum limit of reactive current injection, p.u. |
| MBase | Mbase: Mbase=0 means MVABase=InitialMW; Mbase<0 means MVABase=InitialMW/abs(Mbase); Mbase>0 means MVABase=MBase |