master:fixed_load parametersPSCAD Fixed Load
Every parameter of the PSCAD Fixed Load (master:fixed_load): 26 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().
What master:fixed_load is
The fixed load: a load with set real and reactive power that depends on voltage and frequency through its indices.
- Definition
master:fixed_load- PSCAD name
- Fixed Load
- Category
- Passive branches, loads and filters
- Parameters
- 26, in 2 groups; 5 carry a unit
- Read from
- PSCAD 5.0.0, 2026-11-07
Most used master:fixed_load parameters
| Parameter | Unit | Description |
|---|---|---|
PO | MW | Rated Real Power per Phaserated real power per phase |
QO | MVAR | Rated Reactive Power(+inductive) per Phaserated reactive power per phase |
VBO | kV | Rated Load Voltage (RMS L-G)rated voltage, line to ground RMS |
NP | · | Voltage Index for P (dP/dV) - Part Avoltage index for P |
NQ | · | Voltage Index for Q (dQ/dV) - Part Avoltage index for Q |
Read and write master:fixed_load in Python
import mhi.pscad
pscad = mhi.pscad.connect() # the PSCAD that is open; launch() starts one
project = pscad.project("my_case") # a case loaded in the workspace
for comp in project.find_all("master:fixed_load"): # the exact definition, namespace first
params = comp.parameters() # every parameter, as PSCAD holds it
print(str(params["PO"])) # Rated Real Power per Phase, in MW
comp = project.find_all("master:fixed_load")[0]
comp.parameters(PO="200 [MW]") # a value that carries a unit is written with it- A parameter is named exactly as in the table, letter case included:
parameters()gives every one of them in a dictionary, and a name the component does not have is refused. - A value that carries a unit comes back as a number whose unit is only in its text, so read it as text first (
str(...)) or the unit is lost. PSCAD keeps a written unit as it is given:"2500 [mohm]"stays in mohm. - A Choice is read and written as its symbol (the capitals in "Written as"), not as the words PSCAD shows in the dialog.
find_all()takes the exact definition only. A wildcard or a bare name withoutmaster:comes back empty; the Builder'spx_findwalks the pages for those.
The Builder's runtime does the same with the unit handled for you: px_get(comp, "PO") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.
Internal Outputs
| Parameter | Unit | Default | Description |
|---|---|---|---|
C1Text | · | · | Effective Capacitance [uF] per PhaseEnter a name to monitor effective capacitanceRange 0 to 0 |
L1Text | · | · | Effective Inductance [H] per PhaseEnter a name to monitor effective inductanceRange 0 to 0 |
R1Text | · | · | Effective Resistance [ohm] per PhaseEnter a name to monitor effective resistanceRange 0 to 0 |
Parameters
| Parameter | Unit | Default | Description |
|---|---|---|---|
DtlsChoice | · | NO | Display details?Written as NO (No), YES (Yes) |
FRReal | Hz | 60 | Fundamental FrequencyAt least 1E-307 |
KPAReal | · | 1.0 | Contribution of P at Specified Condition - Part ARange 0 to 1 |
KPBReal | · | 0.0 | Contribution of P at Specified Condition - Part BRange 0 to 1 |
KPFReal | · | 0.0 | Frequency Index for P (dP/dF)Range -5 to 5 |
KQAReal | · | 1.0 | Contribution of Q at Specified Condition - Part ARange 0 to 1 |
KQBReal | · | 0.0 | Contribution of Q at Specified Condition - Part BRange 0 to 1 |
KQFReal | · | 0.0 | Frequency Index for Q (dQ/dF)Range -5 to 5 |
NCYCReal | · | 10.0 | Number of Cycles before Load ReleaseRange 1 to 20 |
NPReal | · | 2.0 | Voltage Index for P (dP/dV) - Part ARange -5 to 5 |
NPBReal | · | 2.0 | Voltage Index for P (dP/dV) - Part BRange -5 to 5 |
NPCReal | · | 2.0 | Voltage Index for P (dP/dV) - Part CRange -5 to 5 |
NQReal | · | 2.0 | Voltage Index for Q (dQ/dV) - Part ARange -5 to 5 |
NQBReal | · | 2.0 | Voltage Index for Q (dQ/dV) - Part BRange -5 to 5 |
NQCReal | · | 2.0 | Voltage Index for Q (dQ/dV) - Part CRange -5 to 5 |
NameText | · | · | NameName for easy identificationRange 0 to 0 |
POReal | MW | 100 | Rated Real Power per PhaseAt least 0 |
PQdefChoice | · | RATED | PQ Defined atSelect Rated Voltage or Initial Terminal VoltageWritten as RATED (Rated Voltage), INITIAL_TERMINAL (Initial Terminal Voltage) |
PartsChoice | · | 1 | Number of Parts in the Composite LoadSelect number of parts in the composite load 1, 2 or 3Written as 1 = 1, 2 = 2, 3 = 3 |
QOReal | MVAR | 25 | Rated Reactive Power(+inductive) per Phase |
ScaleReal | · | 1.0 | Scaling FactorRange 1E-10 to 10 |
VBOReal | kV | 132.790562 | Rated Load Voltage (RMS L-G)At least 0 |
VPUReal | pu | 1.0 | Initial Terminal VoltageInitial terminal voltageAt least 0 |
Related
- All 345 definitions in the component reference
- Sweep a PSCAD parameter with Python
- PSCAD automation with Python: getting started
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